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CONTENT Supplement Issue of ONSITE CONSTRUCTION n°2 – March 2020
4 News by Editorial staff
COVER STORY 6 The Stuttgart-Ulm rail project Four divas fastly performs in Swabia by Stefano Togni
21 Hinowa
The new transporter TX3005 even more strong and performing
DRILLING
Tailor made solutions for the Brenner Base Tunnel
22 Soilmec
The Soilmec flagship
TOOLS
by Ettore Zanatta
36 Adriatech
Reliability, efficiency, innovation in drilling equipment
In the Kingdom of energy by Stefano Vitali
by Riccardo Lorenzi
28 Liebherr
39 SIP&T
New drilling rig LB 45: increased performance and higher flexibility
FDP: precious added value
40 Brigade Electronics
by Riccardo Lorenzi
Heavy telescopic mining range now performs even better
INNOVATION
by Luca Bernazzani
TECHNOLOGIES
12 Epiroc
A power change that changes everything
TUNELLING 16 Sandvik
Underground productivity by Stefano Vitali and Giovanni De Mattia
20 Cifa
CIFA e TFI together for the development and distribution of tunnelling product branded TFI-CIFA
42 DAT instruments
31 Fraste
Fraste Roto Handling Clamp: how to simplify your job on drilling site
CONCRETE 32 Penetron Italia
Innovation in mix designs
Editor in chief Ettore Zanatta - ettore.zanatta@capoversoeditrice.it
Frequency Extra Issue
Editor Lorenzo Zacchetti - lorenzo.zacchetti@capoversoeditrice.it
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by Gianni Gennari
CH 300, the new entry in large diameter piling rigs range
Print MDM - Forlì
Contributors: Gianni Gennari (Editorial Coordinator), Luca Bernazzani, Giovanni De Mattia, Enricomaria Gastaldo Brac, Riccardo Lorenzi, Stefano Togni, Valentina Violante, Stefano Vitali
The new DAT TinyLog
30 Comacchio
Publisher Luigi Zaffagnini - l.zaffagnini@capoversoeditrice.it
Sales Manager Luisa Casazza - l.casazza@capoversoeditrice.it
by Valentina Violante and Enricomaria Gastaldo Brac
35 Italcementi
26 Bauer
by Ettore Zanatta
for shotcrete
ONSITE UNDERGROUND Capoverso Editrice srl Piazza Gramsci, 7 48017 Conselice (RA) tel. 0545 967722 info@capoversoeditrice.it www.capoversoeditrice.it
C apoverso editrice
COMPONENTS 44 Sireg Geotech
Italian manufacturers in the world, at the forefront of geotechnics by Stefano Vitali
47 Trelleborg
The new TPMS system for construction tires
Copyright Reproduction of articles, photos and illustrations featured on “ON SITE UNDERGROUND”, including translations, is strictly prohibited without written approval by Capoverso Editrice srl. Texts, photos and illustrations sent to the Publishing Company will not be returned, even if not published. Capoverso Editrice srl denies any responsibility regarding such materials, even if provided as a single-copy item, and possible mistakes in featured articles. Such materials received by Capoverso Editrice srl will be published free of charge, unless there is a previous written agreement regarding payment. Every trademark, brand, personal and company name is featured in the articles only for information purposes and without any responsibility by the publisher. Your name is included in our mailing list exclusively for sending our communications and will not be transferred to others, by virtue of the new EU regulation on Privacy N. 2016/679 (General data protection regulation, Gdpr). If you do not wish to receive further information in the future, you can request Capoverso Editrice srl by writing to: info@capoversoeditrice.it Periodico associato a UNACEA
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NEWS INFRASTRUCTURE
TBM Nancy Breaks Through On Sydney Metro TBM called Nancy, one of five Herrenknecht machines being used by tunnelling contractor John Holland, CPB and the Italian contractor Ghella - on the project, has arrived at the end of 2019 at the new Martin Place Station, 28 m under Sydney. After just 11 months of tunnelling, 22 km of Sydney Metro’s tunnels are now finished. Sydney Metro is Australia’s biggest public transport project. This new standalone railway will deliver 31 metro stations and more than 66 kilometres of new metro rail, revolutionising the way Australia’s biggest city travels. Metro means a new generation of world-class fast, safe and reliable trains easily connecting customers to where they want to go. Customers don’t need timetables – they just turn up and go. When Sydney Metro is extended into the central business district (CBD) and beyond in 2024, metro rail will run from Sydney’s booming North West region under Sydney Harbour, through new underground stations in the CBD and beyond to the south west. There will be ultimate capacity for a metro train every two minutes in each direction under the city, a
4
ONSITEUNDERGROUND - march 2020
level of service never before seen in Sydney. Sydney’s new metro railway will have a target capacity of about 40,000 customers per hour, similar to other metro systems worldwide. Sydney’s current suburban system
can reliably carry 24,000 people an hour per line. Since launching in October 2018, TBM Nancy has tunnelled 6.8 km via the new metro stations at Waterloo, Central and Pitt Street. TBM Nancy will spend a few weeks undergoing maintenance before being relaunched to complete the last 1.3km section between Martin Place and Barangaroo. It has taken about 21 months to build the caverns for the new Martin Place Station ahead of TBM Nancy’s arrival, removing about 198,000 tonnes of rock – enough to fill about 30 Olympic swimming pools. The five TBMs building the railway tunnels are purpose built, with four double-shield, hard-rock TBMs designed to bore through Sydney’s hard sandstone, whilst a mixedshield slurry TBM will excavate the under-Sydney Harbour ground conditions. Currently two TBMs are delivering the 6.2 km from Chatswood to the edge of Sydney Harbour, whilst two are travelling 8.1km from Marrickville to Barangaroo. The fifth TBM is boring twin 1km long tunnels under Sydney Harbour.
NEWS EVENTS
WTC 2020 in Malaysia shifted from May to September 2020 Due to the spreading Corona Virus in Asia-Pacific and the last days also in Europe, the organisers decided to shift the date of the World Tunnel Congress 2020 and associated events from 15-21 May 2020 to a new date, which will be the 11 to 17 September 2020. “The health and safety of our colleagues are of the utmost importance to the ITA and IEM (the Malaysian Tunnelling Technical Group - ITA Member Nation in Malaysia)”, explained ITAAITES WTC 2020 Organising Chairman Ir. Dr Ooi Teik Aun this very difficult decision. The WTC 2020 Organizing Committee, in cooperation with ITA, Sponsors, Exhibitors, lecturers, reviewers, ITA Member Nations, ITA Working Groups and Committees have been working hard during the last 3 years to bring everybody a successful World Tunnel Congress. “But after considering various possibilities, the development of the Coronavirus (Covid-19) in Asia-Pacific and as well as in Europe and other parts of the world leads us to shift the date of the WTC and associated events from15-21 May 2020 to 1117 September 2020.” Indeed, it is not possible at the moment to predict the evolution of this virus and many people could have been forced not to be able to participate. On the
other hand, for the time being, the World Health Organization recommends limiting mass gatherings. “We know that, for some of you, this change of date may not be ideal; however, it seemed to
us the best solution to be able to organize this major event for the entire tunnelling industry,” expressed Ir. Dr Ooi Teik Aun his sorrows for this decision. The congress venue has
been secured for this change to September 2020 and the WTC 2020 Organizing Committee is working with the hotels and all associated venues to make all the necessary changes accordingly.
WELCOME TO R E A L I T Y D re a m s a re n o t re e l , i t c a n b e re a l . Fo r t h a t w e re a l ly w o r k h a rd .
Dal 1981 leader mondiale n e l l a p ro d u z i o n e d i a v v o l g i t u b o e a v v o l g i c a v o .
DEMAC S.R.L.
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MAGENTA (MI) - ITALY
| +39 02 9784488
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INFO@DEMAC.IT
COVER STORY
The Stuttgart-Ulm rail project
Four divas fastly performs in Swabia Suse, Sibylle, Wanda and Käthchen: in five years, four innovative tunnel boring machines from Schwanau in Baden have effortlessly and unerringly built almost 50 kilometers of new tunnels for the Stuttgart-Ulm rail project by Stefano Togni
T
hey are called Suse, Sibylle, Wanda and Käthchen. And they are the TBM “divas” five years long on the stage for the Stuttgart-Ulm rail project, the region of Swabia, Germany. All the machine-driven tunnels for the Stuttgart-Ulm rail project were quickly and quietly excavated in just five years of tunnelling. The final act in the ma6
ONSITEUNDERGROUND - march 2020
jor project was a ceremonious breakthrough in the Albvorland Tunnel completed in late October 2019 by the tunnel boring machine (TBM) S-1024 (EPB Shield, diameter 10,820 mm), which bore the name of WANDA (German acronym for “Wendlingen on the Neckar through the Alb foothills”). This was the fourth and last successful project completion by the Herrenknecht tun-
nel boring quartet for the key structures Filder, Albvorland and Bossler tunnels. The machines bored a total of almost 50 kilometers of modern and efficient tunnel infrastructure with precision and speed. The TBMs mastered their underground mission under the guidance of the experienced tunnelling experts and engineers of the three construction consortia and the overall direction of client Deutsche Bahn.
The route of new Stuttgart-Ulm railway line
From Stuttgart to Ulm by train The Stuttgart-Ulm rail project is located on the European east-west main line from Paris to Bratislava and is divided into two major projects: Stuttgart 21, with the construction of the new main train station and the reorganization of the Stuttgart rail hub; the new Wendlingen–Ulm line. With the construction of the main station as a through station and the connection to the European high-speed Panoramic view of the new Stuttgart train station construction yard
THE NEW TRAIN STATION The present terminus station in Stuttgart will be replaced by a through station with eight tracks located underground and running at right angles to the present building. Although it will have only half the number of tracks, the new station will be able to serve a significantly higher number of trains. The “light eyes”, skylights which admit daylight to the train hall, are a striking architectural feature which will transform the new station into a flagship building for the city. Another special feature: it will be possible to walk on the station’s roof, which will form the new urban space of
Viewed from Arnulf-Klett-Platz, the
m lower than their present level. A ring
Straßburger Platz immediately next to
new station will be situated immedia-
of tracks will link the station to the regio-
the Schlossgarten park.
tely behind the present building, which
nal and long-distance rail network, with
Stuttgart’s new through station will be
was designed by Paul Bonatz. With the
connections running in all directions.
able to cope with growing passenger vo-
exception of the side wings, the Bonatz
Stuttgart’s new main station will have a
lumes and facilitate fast and comfortable
building will be completely retained.
total of eight tracks flanking four central
regional and long-distance rail services.
The new tracks will be approximately 11
platforms with a length of 420 m each. march 2020 - ONSITEUNDERGROUND
7
COVER STORY
Render and construction phase of the Stuttgart 21 project
network, the travel times in regional and mainline services will be shortened significantly. A total of 60 km of new railway line and three new stations – Stuttgart Main Station, Flughafen/Messe for the airport and trade fair grounds, and Mittnachtstraße rapid transit station in the new Rosenstein district – will increase the capacity of the Stuttgart rail node. The city’s main station will be converted from a terminus where trains end into a through station, but the historic station, with its striking passenger building, tower and colonnades will be integrated with the new structure. The new Flughafen/Messe station will link the region to the south of the city to long-distance and regional transport routes. The project will open up unique urban development opportunities in Stuttgart: tracks that now slice the urban fabric in two will give way to a new neighbourhood right in the centre of Stuttgart. This will create more green space, new housing and jobs.
The Filder Tunnel hinge The twin-tube Filder Tunnel measures 9.5 kilometers, making it the longest tunnel structure between Stuttgart and Ulm. Herrenknecht supplied a high-tech “convertible Multi-Mode TBM” type (diameter 10,820 mm) for the Filder Tunnel. In the fall of 2014, TBM SUSE (German acronym for “Stuttgart-Ulm reached faster”) began excavating the tunnel from the Filder Plain down towards the Stuttgart main station. During tunnelling operations the jobsite used this launch portal to handle all of the logistics. This solution saved the city of Stuttgart thousands of truck journeys in the valley basin with dust and noise pollution.
In the upper section of the Filder Tunnel, SUSE worked in closed mode with screw conveyor muck removal, in the lower Filder Tunnel in open mode with belt conveyor discharge. With this convertibility of the TBM, designed and implemented by Herrenknecht engineers, the tunnelling crews mastered the different geological formations along the tunnel alignment with maximum safety. For precise tunnelling control, the miners of the contracting joint venture ARGE ATCOST 21 (Porr Bau GmbH Tunnelbau, G. Hinteregger & Söhne Baugesellschaft m.b.H., ÖstuStettin Hoch-und Tiefbau GmbH, Swietelsky Baugesellschaft m.b.H.) relied on a navigation system from the Herrenknecht Group Brands company VMT GmbH based in Bruchsal. The large-scale project between Stuttgart city center and the Filder Plain was divided into four TBM tunnelling sections: eastern and western tubes, each with Upper and Lower Filder Tunnel. Sophisticated overall logistical planning, a multitude of individual detailed solutions and trusting partnership between the project players laid the foundations
S21- Restructuring the Stuttgart rail node
The new-build Wendlingen-Ulm line
Total line length: 57 km
Total line length: 59,6 km
Of which tunnels and cuttings: 33 km Maximum speed: 250 km/h
Of which tunnels and cuttings: 30,4 km Maximum speed: 250 km/h
Number of tunnels and cuttings: 16 Number of bridges: 18
Tunnel (>500 m): 5 Railway overpasses: 17
Number of stations: 4 Planned inauguration: December 2025
Road overpasses: 20 Planning approval issued on: December 2022
Filder Tunnel pictures - As a convertible Multi-Mode TBM, “SUSE” (diameter 10,820 mm) mastered different geological formations in the Filder Tunnel 8
ONSITEUNDERGROUND - march 2020
Filder Tunnel pictures - In the upper section of the Filder Tunnel, SUSE worked in closed mode with screw conveyor muck removal, in the lower Filder Tunnel in open mode with belt conveyor discharge
for success. The Herrenknecht teams were involved early on in the planning phase and later during implementation – for example, when disassembling or converting a TBM. Herrenknecht’s expertise from a large number of pioneering largescale projects over the past four decades has made a significant contribution to the rapid and safe progress of the project. For example, when working on the first tunnelling section in the eastern tube of the Upper Filder Tunnel: in order to be able to efficiently and safely carry out the TBM disassembly in the excavated tunnel, close cooperation between all project participants was required from the start. With a shield diameter of 10.82
meters and an inner diameter of the tunnel of only 9.6 meters, disassembly and transport back to the launch portal was only possible in the given time frame because all mechanical and logistical requirements were precisely planned in advance and then implemented on the construction site. Richard Lutz, CEO of Deutsche Bahn AG, said on the occasion of SUSE’s final breakthrough in September 2019: “As a hinge between valley basin, airport and new line, the Filder Tunnel is an essential part of the project. I thank all the miners and engineers for their work on the tunnel. Construction and engineering skill have done extraordinary things here.”
Double pack at the Albvorland Tunnel For the Albvorland Tunnel between Kirchheim unter Teck and Wendlingen am Neckar with two EPB shields, the Herrenknecht specialists, together with the contractor crew, met the first challenges even before the huge cutting wheel began to turn. In order to keep to the schedule for the Albvorland Tunnel, Implenia Construction GmbH ordered two identical machines from Herrenknecht – one for each of the two tubes. The schedule for jobsite assembly stipulated that both machines should be assembled in the narrow launch shaft at the same time: with a
The TBM called SUSE working in the Filder Tunnel march 2020 - ONSITEUNDERGROUND
9
COVER STORY
Albvorland Tunnel pictures – In early August 2019 already, SIBYLLE” finished her work in the northern tube. The final breakthrough of WANDA took place in the southern tube in early October 2019
diameter of 10.82 meters and only a few meters between the machines, this was an extremely tricky job. A crew of 20 specialized Herrenknecht experts assembled both TBMs at the tunnel’s eastern portal near Kirchheim unter Teck. In doing so they followed a detailed plan, according to which the assemblies were gradually pre-assembled in the site equipment area and lowered into the narrow launch shaft for final assembly. With peak performances of up to 200 meters per week, from January 2018 to early August 2019 the Herrenknecht EPB Shield Sibylle (named after the legendary figure Sibylle von der Teck), excavated 7.6 kilometers of the northern tube of the Albvorland Tunnel. WANDA covered the 8 kilometers in the parallel southern tube between November 2017 and the breakthrough in October 2019 at up to 186 meters per week. Faster than expected at the Bossler Tunnel The 8.8 km long twin-tube Bossler Tunnel is the third tunnel structure on the new line between Stuttgart and Ulm for which Herrenknecht supplied mechanized tunnelling technology, alongside the Filder
Tunnel and the Albvorland Tunnel. At the launch portal near Aichelberg, the tunnel and TBM (“Käthchen”, diameter 11,340 mm) were christened in November 2014. Shortly after tunnelling began in April 2015, the miners had the technology and logistics of the Herrenknecht EPB Shield well under
control. They continuously raised the daily advance rates. After just two months, the 1,000 meter mark was passed. The segments for the Bossler Tunnel, i.e. the precast concrete parts for the tunnel lining, were produced in moulds from Herrenknecht Formwork GmbH in a specially built factory near the Aichelberg
Albvorland Tunnel pictures – For the construction of the Albvorland Tunnel, two EPB shields (diameter 10,820 mm) from Herrenknecht excavated two single-track tunnel tubes in parallel from east to west
The schedule for the TBM assembly at the Albvorland Tunnel envisaged that both machines with a diameter of 10,820 millimeters should be assembled in the narrow launch shaft at a distance of only a few meters apart 10 ONSITEUNDERGROUND - march 2020
Bossler Tunnel picture - In July 2018 the Bossler Tunnel site crew were already able to celebrate when the Herrenknecht TBM KÄTHCHEN (EPB Shield, diameter 11,340 mm) completed the second tube of the Bossler Tunnel making this the final breakthrough
tunnel portal. A total of 60,000 segments were installed in the Bossler Tunnel. Tunnelling progressed so quickly and safely that the decision was made to use the TBM to excavate further sections of the tunnel that were originally to be built conventionally. In early November 2016 already, after 8.8 kilometers the proud miners of the contracting joint venture ARGE ATA Tunnel Albaufstieg (Porr Deutschland GmbH, G. Hinteregger & Söhne Baugesellschaft mbH, Östu-Stettin Hoch- und Tiefbau GmbH, Swietelsky Baugesellschaft mbH) celebrated their breakthrough in the first, eastern tube. In mid-April 2017, Käthchen took on the second, western tube, which she had already successfully driven by early June 2018 after best performances of up to 214 meters of tunnel construction per week. A 180 degree turn Expectations for the mechanized drives between Stuttgart and Ulm were high on all sides. Maximum safety standards and ambitious construction schedules set the bar extremely high for the success of the project. In addition to the technology of the tunnel boring machines and the additional equipment, the Schwanau service commitment made the difference on the jobsite. Oliver Boiger, Head of Field Service at Herrenknecht, mentions one of the highlights: turning the Filder Tunnel TBM by 180 degrees from the western into the eastern tube in August 2018:
“At the request of the joint venture, we created the concept for this special project, right down to the last detail in fact. We brought all the necessary equipment to the jobsite and ultimately carried out the complete turn.” In late July 2018, coming from the Filder Plain in the western tube, shortly before the new underground Stuttgart main station TBM SUSE had reached an underground cavern. Here the 120 meter long
TBM had to be turned 180 degrees for the subsequent excavation of the eastern tube of the lower Filder Tunnel. Oliver Boiger’s team first placed the 1,400 tonne shield machine with the cutting wheel on a kind of sled on cushions filled with nitrogen. Using steel plates laid out in the cavern, they maneuvered the shield around the tight bend, at the same time with exact precision in the smallest of spaces and without losing any time. Then it was the turn of the six back-ups, which the Herrenknecht specialists had separated accordingly. One by one, they moved the back-ups on self-propelled modular transporters (SPMT) from the western to the eastern tube. There, in a section of tunnel that had previously been excavated conventionally, the Herrenknecht service team gradually put the shield machine and back-ups together again. They connected countless electrical and hydraulic lines and assembled screw and bolt connections until the TBM was able to be launched again for the fourth and final tunnelling section in the eastern tube of the lower Filder Tunnel. “Everything went smoothly, but it wasn’t something you do every day. With our experience and our competence, we have optimally supported the customer in this project milestone.” ■
ITALIAN ABSTRACT
QUATTRO DIVE SI ESIBISCONO RAPIDAMENTE IN SVEVIA Si chiamano Suse, Sibylle, Wanda e Käthchen. Sono le “dive” TBM “in cartellone” per cinque anni sul palco del progetto ferroviario Stuttgart-Ulm, nella regione della Svevia, in Germania. Tutte le gallerie per il progetto ferroviario Stoccarda-Ulm sono state rapidamente e silenziosamente scavate in soli cinque anni. L’atto finale del grande progetto è stata la cerimonia del “breakthrough” nel tunnel di Albvorland completato a fine ottobre 2019 dalla fresa a scudo (TBM) S-1024 (Scudo EPB, diametro 10.820 mm), che portava il nome di WANDA (acronimo tedesco per “Wendlingen on the Neckar through the Alb foothills”). Questo è stato il quarto e ultimo intervento di successo da parte di Herrenknecht per le infrastrutture chiave dei tunnel Filder, Albvorland e Bossler. Le macchine hanno scavato un totale di quasi 50 chilometri di gallerie moderne ed efficienti, con precisione e velocità. Il progetto ferroviario Stuttgart-Ulm si trova sulla linea principale est-ovest europea da Parigi a Bratislava ed è diviso in due grandi progetti: Stuttgart 21, con la costruzione della nuova stazione ferroviaria principale e la riorganizzazione del nodo ferroviario di Stoccarda; la nuova linea Wendlingen – Ulm.
march 2020 - ONSITEUNDERGROUND
11
INNOVATION Epiroc
A power change that changes everything The Swedish company leads the charge towards sustainability in mining through battery-electric, zero-emission equipment. After more than 60,000 operating hours, Epiroc is expanding his solutions with the second generation in loaders, mine trucks and rigs for face drilling, production drilling and rock reinforcement by Ettore Zanatta
Epiroc new generation battery fleet
12 ONSITEUNDERGROUND - march 2020
T
here is a big change in progress from Epiroc towards a complete conversion of his fleet to electrical machines, capable of ensuring a significant reduction of risks for the operator and the work environment. Several battery-driven machines are already at workin mines around the world, at the moment. An example? The first-generation electric equipment that Epiroc launched in 2016: it has logged more than 80,000 hours of operation worldwide and many mining companies are using Epiroc’s first-generation battery-driven machines. Brazilian mining company Nexa Resources, for example, is using a Scooptram ST7 battery loader in Peru, while the Swedish state-owned mining company LKAB plans to use Epiroc’s zero-emission vehicles as itexpands its mining operation in northern Sweden in a sustainable way. A year after Epiroc’s launch of its new-generation battery electric mining equipment; the company won orders for those machines from customers in several countries including Finland, Australiaand Canada. So Epiroc - as well as other leading mining equipment manufacturers - combines to offer battery electric loaders and mine trucks in small, medium and large capacities. Many types of medium and largeface drilling, production drilling and rock reinforcement rigs are actually available in the market. Machines are sized to work together seamlessly within the mines, offering logistical conveniences. The portfolio of these electric machines is continually expanding as well. While the shift to battery electric power underground gains momentum, some mining companies remain relatively unfamiliar with or wary of the technology. Following is an overview of battery electric technology compared to diesel power, from benefits to necessary infrastructure to where to start with implementation. Benefits of electric equipment Battery-driven machines offer in real a variety of benefits for top management, mine managers, environmental stakeholders and underground personnel alike.
The Boomer M2 Battery is a battery powered face drill rig with zero emissions
Battery electric vehicles are outperforming their diesel counterparts. The torque and power curves for the electric vehicles are far superior to those of a comparable diesel engine. At zero revolutions per minute, an electric vehicle has full torque while a combustion engine stalls. With a battery-powered machine, the hydraulic functions are separated from the traction, providing on-demand power and making the machines significantly stronger in all its functions. As an example, the torque, acceleration and power deliveries of battery technology give an electric mine truck a large advantage going up a ramp. Furthermore, battery electric vehicles have the capacity of regenerating energy while traveling down the ramp, extending driving range and reducing overall energy consumption. On average, on-ramp haulage for electric vehicles typically offers a 10 percent gain in productivity when all factors are considered. Improved work environment The difference in work environment between using diesel powered and battery-powered machines is significant. Noise levels, air quality and heat conditions are all improved dramatically with electric vehicles. Changing out one or two machines can have a profound impacton a specific portion of a mine. Mine-wide implementation benefits all underground personnel. Then: electric vehicles produce no exhaust, improving worker health and safety while reducing the need for ven-
tilation. Ventilation requirements vary from mine to mine, but by and large, there is a huge benefit to minimizing ventilation needs. Old mines where infrastructures are not large enough to support ventilation for deep or remote areas can find great relief and increased mining potential in battery-run machines. Mines yet to be developed will not need to develop the infrastructure necessary for diesel operations, providing a huge early cost reduction. Lower cooling requirements. Heat is often a problem in underground mines and all energy that is used ends up in heat. Reducing and optimizing energy consumption reduces heat emissions. Diesel engines generate a large amount of heat, which never becomes any sort of work. Some heat is expelled through the exhaust pipe, while some remains in the system, needing to be cooled by fans and pumps. Electric vehicles produce far less heat and use energy more efficiently. Energy consumption Electric vehicles are much more efficient at turning energy into work. 10 kWh of diesel power will only produce around 3 kWh of work while 10kWh of battery power is able to produce 7 to 8 kWh of work, in part due to a regeneration function. Fires associated with diesel from ruptured hydraulic hoses and diesel lines with a hot surface that ignites the mist. For this reason, with electric vehicles there is no fuel and no surface hot enough to ignite a mist of oil. march 2020 - ONSITEUNDERGROUND 13
INNOVATION Efficient operations and lower emissions Diesel engines do not function well at high altitudes. The thin air makes it difficult to get proper combustion and creates a lot of smoke. This canbring productivity to a halt. Electric vehicles function well at high altitudes, eliminating these issues. While it is beneficial to run a diesel engine that meets the latest exhaust emissions regulations, no diesel engine can compare to battery electric power when it comes to carbon dioxide and emissions reductions. There are many additional factors to consider when looking at environmental impact, from battery production and delivery to how the energy that will charge the battery is created. Swedish battery manufacturer Northvolt, an Epiroc partner, is working to build batteries using 100 percent
Scooptram ST14 Battery, fully battery electric loader with 14-tonne capacity
renewable energy and deliver the batteries using the least taxing method on the environment.
ITALIAN ABSTRACT
“A POWER CHANGE THAT CHANGES EVERYTHING” È questo il pay-off del costruttore svedese, che sta focalizzando le sue energie e le sue risorse su un grande cambiamento in atto: la completa conversione della sua flotta di macchine diesel in versioni elettriche, in grado di assicurare una riduzione dei rischi per l’operatore e per l’ambiente di lavoro. Epiroc guida il cambiamento verso l’utilizzo - anche in ambito estrattivo minerario - di apparecchiature elettriche a batteria, a emissioni zero. Dopo oltre 60.000 ore di test di funzionamento, il costruttore svedese sta ora ampliando le sue soluzioni con una nuova generazione di caricatori da galleria, carrelli e piattaforme da miniera e macchine specializzate nella perforazione e il rinforzo di roccia. Molte di queste nuove macchine a batteria, più convenienti dei modelli diesel sotto diversi aspetti, sono già al lavoro nelle miniere di tutto il mondo, al momento. La società mineraria brasiliana Nexa Resources, ad esempio, utilizza un caricatore Scooptram ST7 in Perù, mentre la società mineraria statale svedese LKAB prevede di utilizzare a breve questi veicoli a emissioni zero di Epiroc per espandere le sue attività minerarie nella Svezia settentrionale in modo sostenibile. Un anno dopo il lancio da parte di Epiroc delle sue macchine di estrazione elettrica a batteria di nuova generazione, poi, l’azienda ha ricevuto ordini da clienti in diversi Paesi tra cui Finlandia, Australia e Canada. Un caso esemplare di macchina “sostenibile” ma allo stesso tempo produttiva in quest’ambito è il caricatore Scooptram ST14 Battery, utilizzabile in applicazioni sotterranee al 100% senza combustibile fossile, sviluppato adattando e ottimizzando le potenzialità del collaudato modello Scooptram ST14: ciò implica zero esposizioni a particolati diesel e gas tossici come ossidi di azoto, idrocarburi e monossido di carbonio (NOx, HC e CO). Essendo priva di fossili per ciò che concerne il suo utilizzo, dunque, questa macchina fa la differenza per quanto riguarda l’impatto a livello ambientale e assicura al contempo un’elevata produttività.
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Focus on the operativity An effective example of where the Epiroc path is heading is represented by Scooptram ST14 Battery, a 100% fossil-free loader for underground application based on the well proven Scooptram ST14 as suitable for development as for production loading. Energy regeneration ensures low energy consumption and extend drivining range. With the electric drive, Scooptram ST14 Battery outperforms diesel equivalents, especially ongrade. Scooptram ST14 Battery, in particular, improves the environment both locally operations and globally. It means zero exposure for the workforce for diesel particulates and toxic gases such as nitrogen oxides, hydrocarbons and carbon monoxide (NOx, HC and CO). Being fossil-free, this machine makes a difference when it comes to carbon footprint and greenhouse gases. Scooptram ST14 Battery is optimized for productivity in many ways. Tramming is provided by a high power traction motor connected to a high efficiency driveline. Hydraulic functions are powered from a separate auxiliary motor that delivers hydraulic power on-demand. The battery is designed for maximum energy capacity and quick swapping. Scooptram ST14 Battery has a considerably reduced number of service points and moving parts, as well: this results in longer service intervals, lower parts consumption and lower running cost. ■ (The text was elaborated on the article published on Mining Engineering - www.me.smenet.org)
EXPERIENCE
VERONA 21/25 OTTOBRE 2020 PADIGLIONE 8 - STAND E2
TUNNELLING Sandvik
Underground productivity Thanks to the recent launch of the Sandvik DT1132i jumbo, the Swedish manufacturer of machines and equipment for mining has further raised the quality of tunnel drilling by Stefano Vitali and Giovanni De Mattia*
T
he DT1132i jumbo by Sandvik Mining and Rock Technology is one of the latest innovations in underground drilling. It is a highly productive drilling unit suitable for several applications which expands the wide range of drilling rigs of the Swedish manufacturer. Together with the Sandvik RD535 high frequency rock drill and rock tools specifically designed for high speed drilling the DT1132i provides a Heavy Duty tunneling solution.
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Modular design All Sandvik DTi tunneling jumbos have been developed with a special modular design that makes them highly flexible and versatile. Suitable for fast face drilling or mechanized long-hole drilling and bolting, they are proving be highly productive, reliable and effective across the world, using the latest developments in automated drilling solutions such as the iSURE tunnel management software and SICA intelligent control system.The DT1132i, is a three-boom,
electro-hydraulic jumbo that has been purpose-designed for fast and accurate drilling in tunneling and cavern excavation. The on-board computer controls and automates the entire drilling cycle, while allowing full manual drilling when needed.As well as incorporating some of Sandvik’s latest developments in digital solutions, the new rig uses Sandvik’s new high frequency RD535 rock drill, robust booms and advanced drill string guides, making it a complete and new high-speed drilling solution.
Drilling innovations The RD535 rock drill, automated drilling features and new rock tools mean that that the DT1132i delivers the results required, but with 40% less exhaust particles, up to 20% higher penetration rate and with 25% more side coverage. The essential premise behind the development of the new DT1132i is to provide users with increased drilling performance and accuracy, thanks to its fast and adaptive drilling control capabilities, able to account for changing rock conditions. The rig design also maximizing operator safety and ergo-
nomics, with improved fleet standardization (high parts commonality) enabling extended rig usage across different work sites.Amongst the many new features on the new rig is a new 3m telescopic TB160i boom, optimized with a front wrist structure that provides 1 m additional side coverage as standard, and 4 m side coverage with telescopic adjustment. The new boom also uses a new fully proportional boom control for accurate and fast manual boom handling, with intelligent compensation models to give accuracy in all operating conditions.
PRECISION AND SPEED IN DRILLING
The Alpha 360 drilling system is Sandvik latest innovation in the drilling tool area. This system is designed to optimize 48 and 51mm holes.Thanks to a greater quantity of steel on the thread and a shorter and more robust design, Alpha 360 provides optimal drilling precision, a better hole header and an almost double life span compared to standard thread rods. These features ensure straight and parallel holes that significantly increase productivity in tunnels and mines. Thanks to a 10% increase in penetration speed, the new Speedy bit Sandvik is the fastest tip on the market. Drilling faster means reducing all costs related to drilling activity of the machines (operator cost, machine maintenance, etc.).The Sandvik Alpha 360 + Speedy bit systems, therefore, really are a winning combination.
The DT1132i features robust booms and advanced drilling slides which make it a complete and innovative high speed drilling solution
The DT1132i jumbo is an electro-hydraulic three booms machine designed for fast and precise drilling in tunneling and cavern excavation march 2020 - ONSITEUNDERGROUND 17
TUNNELLING
The DTi jumbo series - launched in 2018 in Finland - is the result of 50 years of experience, research and development in drilling of Sandvik Mining and Construction
New cabin for safety and comfort An ergonomic vibration-dampened cabin has been designed for the new DT1132i which provides the operator with excellent all-round visibility, low noise level inside the cab thanks to its acoustic windows, a filtration system to minimize dust inside the cab (according to standard EU6/7) and an open and spacious operator environment. Doorways have been located in the rear of the cab to minimize any disturbance for the operator, whilst safety has been maximized with a FOPS-compliant cabin.To further improve the efficiency of the rig and the operator, comprehensive diagnostics information is integrated into one display in the cabin of the DT1132i. These include drilling diagnostics for boom instrumentation, drill-
THE NEW COMMANDO DC300RI Another recent “new entry” in the Sandvik product range is the Commando DC300Ri drilling rig, equipped with an external hammer. This model is characterized by its versatility, being able to adapt to the most diverse applications. Completely radio-controlled and equipped with a wheeled carriage, this machine is able to drill holes with a diameter from 38 to 64 mm, is ready for R28, R32 and T35 MF rods. Thanks to the four-wheel drive, the oscillating carriage (± 10 °) and the 43 kNoverall tramming force the DC300Ri guarantees high mobility and stability even on difficult terrain. The particular construction of the new reinforced boom, hydraulic roll-over, which allows the feed to rotate 360 degreesand the HL300 rock drill make it a highly performing solution, which however keeps operating costs low even during demanding operations. A flushing air capacity of 3m3/min allows deeper hole depth with larger hole sizes. The drilling rig is also equipped with the iTorque drilling control system. The wide boom reach, thehydraulic roll-over, the compressor on board, the retainer mounted on the drilling slide to add drilling rods, as well as the possibility of using selfdrillingrods, make the Commando DC300Ri an ideal solution for all construction sites that require rapid and extremely urgent works.
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Automated drilling
The DT1132i is available with some of the latest developments in automation, including a SICA control system for intelligent torque control/feed percussion, with monitoring and fleet The drill rig design maximizes operator safety and ergonomics
ing control system and shank lubrication together with carrier diagnostics for electric motors, pumps (hydraulics and water), transmission system, diesel engines, brake system, jacks and cable reels. The rig also features durable covers to protect components and incorporates a new cover design, in which all sides are covered and all service points are easy to access. Power and efficiency The new RD535 is a high performance and high frequency rock drill. This new rock drill maximizes power transfer capabilities leading to a high drilling speed without compromising hole quality, has an efficient and powerful patented percussion mechanism, as well as a tool-saving, efficient and patented stabilizer structure for increased reliability. These features, together with improved flushing and efficient cooling, provide uninterrupted high-speed drilling.
The DT1132i features a highly powerful transmission system with a Cummins B6.7, 168kW diesel engine (stage 5) which can be operated up to 5,000 m above sea level without any modifications. The new engine provides up to a 90% reduction in NOx emissions (compared to stage 3 engines), with more than 90% mass reduction for DPM. The rig utilizes a new carrier which uses more efficient hydraulic and water systems. These include separate circuits for both drilling and tramming hydraulics. Drilling precision has been improved by using proportional flushing valves to adjust the flushing flow and inlet/outlet pressure monitoring.The rig steers by hydraulic rear wheel steering and its electric current reducer unit provides electric reactive power element (kVar) from an onboard capacitor, reducing electric current draw by up to 20%. The 3 x 90kW IE3 electric motors require 2.5% less energy, with all
ITALIAN ABSTRACT
PRODUTTIVITÀ IN SOTTERRANEO Con il recente lancio del jumbo Sandvik DT1132i lo specialista svedese in macchine e attrezzature per l’industria estrattiva ha elevato ulteriormente il livello di qualità nella realizzazione delle perforazioni di gallerie. Tra le più recenti innovazioni nel settore dello scavo in sotterraneo c’è certamente il jumbo DT1132i prodotto da Sandvik Mining and Rock Technology. Si tratta di una unità di perforazione altamente produttiva, con ampia copertura di applicazioni, che amplia la già vasta gamma di perforatrici del costruttore svedese. Unitamente al martello ad alta frequenza Sandvik RD535 e agli utensili da roccia progettati specificatamente per la perforazione ad alta velocità, il DT1132i offre agli utilizzatori una soluzione Heavy Duty per il tunnelling.
management for My Sandvik. To further improve the excavation process, remote access via WLAN can be chosen which allows web-based data transfer as well as online MWD.As ‘Gold’ standard, the DT1132i comes with torque based semi-automated drilling, manual boom control and rod handling, all enabling drilling to a predefined depth with feed angle measurement and drill bit location measurement. Drill plan visualization and rig navigation are also included. In addition to these standard features, the rig is also available as part of the ‘Platinum’ package with automatic long hole drilling and fully automatic face drilling.
working lights based on LED technology, automatically controlled based on tramming direction and with directional lights available where needed. A new TF535i feed also provides increased feed force for high power drilling, whilst a saving hose reel structure gives longer service life for the hoses which are of an increased size. A hose support structure enables the independent tightening of every single hose, thereby reducing any pressure drop. An integrated accurate linear sensor ensures accurate rock drill positioning, providing a more accurate hole depth measurement. A new slide piece design enables 50% less wear and friction. *Stefano Vitali, OnSite editorialstaff Giovanni De Mattia, Product Line Manager Underground Rock Excavaton, Sandvik ■ march 2020 - ONSITEUNDERGROUND 19
TUNNELLING CIFA
CIFA e TFI together for the development and distribution of tunnelling product branded TFI-CIFA CIFA - leader in the design and production of machinery for the concrete industry - and Tunnels & Formworks International (TFI) – specialized in the development and design of equipment for tunnelling and bridge construction -signed a partnership for the joint development and distribution of a tunnelling product line (traditional formwork solutions and segment moulds for tunnels and formwork solutions for bridges), which will be distributed by and branded TFICIFA.Thanks to this agreement, CIFA and TFI decided to use their shared tunnelling experience and knowhow, specifically regarding traditional formwork solutions, segment moulds for tunnels and formwork solutions for bridges, tackling the market together with the new TFI-CIFA brand. For these products CIFA and TFI will no longer use and distribute their original brands in order to take full advantage of theirsynergies and
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provide the best possible product and service to the market. TFI will manage the sales, the technical side, the production, the after sales services and the validation of the products included in the agreement (traditional formwork solutions and segment moulds for tunnels and formwork solutions for bridges),while CIFA will bring to thetable its brand, its experience, skills and know-how in the industry, supporting TFI product sales with comarketing actions and its salesforce. The products included in the TFI-CIFA brand agreement will rely on CIFA financial services by Zoomlion Capital, the Zoomlion group captive company. Several services can be customized according to customer needs and are related to financial leasing.CIFA will continue to supply underground machinery directly under the CIFA brand, both those in itsportfolio and those that will be developed forspecific
customers. “At CIFA we are proud of our historic experience in Tunnelling, we have developed technologies and products in the field of concrete formwork that have contributed to the creation of many types of tunnels all over the world such as road tunnels, railways, subways and hydraulic works, using a wide range of construction solutions that meet the most diverse needs of construction sites, taking advantage of our 90-year market presence”, said Davide Cipolla, CEO of CIFA. “We are confident that this know-how, combined with the skills of TFI, will allow us to design a product range able to meet specific needs in a constantly evolving market”.“We are delighted to have joined CIFA”, added Antonio Minotti, TFI Sole Managing Director, “and we look with great interest at this joint development opportunity that will surely allow us to grow and become a world leader in the Tunneling market”.
EQUIPMENT HINOWA
The new transporter TX3005 even more strong and performing Hinowa launches a new transporter suitable for a wide range of operations: the TX3005 model which replaces the current TX2500. Let’s quickly see the other news that characterize the transporter Hinowa TX3005 compared to the previous model. The most obvious change at first sight is the new, more modern and attractive design: the machines are completely redesigned in every
element, the cab, the coffer, the dumper. The construction of the coffer, in particular, arises from the technology of the automotive sector;
in addition, the coffer has a different opening for better accessibility for the service. The dumper is also completely new: in the new model it is lower and wider, while maintaining the same volume capacity (1.49 m3), on the other hand, the capacity is increased to 2,875 kg compared to the previous 2,500 kg. The machine has a width dimension of 1,550 mm, therefore in shape.
STANDARD AND SPECIAL EQUIPMENT FOR EARTHMOVING MACHINE SPECIAL CUSTOM SPARE PARTS MINI AND HEAVY DUTY BUCKETS FOR EXCAVATORS, SPECIAL ARM AND QUICK COUPLING
Made in Italy
TRIMECCANICA S.R.L. - Via Cosmo Mollica Alagona, sn 95121 – Catania (IT) www.trimeccanica.it - info@trimeccanica.it / Tel. +39 095292399 - Fax +39 095292454
DRILLING Soilmec
The Soilmec flagship A Soilmec SR-145 HIT drilling rig was used in the foundation works forthe improvement project of the cruise ship dock in the Savona harbor, which hosted on 21 Decemberthe maiden voyage of the Costa Smeralda, the new flagship of Costa Crociere “Excellence” class by Ettore Zanatta
S
avona is one of the major Italian harbors both for cruise sector and merchant marine traffic. Since 1996, when the collaboration with Costa Crociere began, the cruise sector traffic of the Savona harbor increased, requiring over the years
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several investments relating to port infrastructures for cruise traffic. The main goal was to adapt the cruise terminals to the needsof the cruise market, which is oriented towards more and more larger ships. In 2019 the Port System Authority of the Western Ligurian Sea started the
works in the Savona cruise terminal to meet the needs of new generation ships and be able to host the “Costa Smeralda, a 180,000 tons megaship powered by LNG liquefied natural gas. The project included works to deepen from 9 to 11 meters the seabed in front of the main quay of the cruise terminal
in areas 8-9-10 of the Savona basin and the reinforcement of the structure. The 17 million euroscontract was entrusted to RCM Costruzioni and Fincosit. The foundation works included the construction of a frame made of reinforced casings and sheet piles which was used to enlarge the existing quay. The foundation piles of the project, drilled up to a depth of 32 m from the seabed, have a diameter from 1,100 mm and 1,700 mm. The geological composition of the subsoil included a first layer of fill material followed by alternated layers of medium-fine sands and gravels in a sandy and silty matrix up to a depth of about 20 from the ground level and a stone substrate consisting of fractured schists. The piles were drilled using the bored pile technology with telescopic kelly rod and bucket type excavation tool. Furthermore, having to work at sea, the drilling takes place inside casing previously anchored to the seabed using a crane equipped with a vibrator. The machine used for drilling operations was a Soilmec SR-145 HIT, the Soilmec flagship designed to achieve maximum performance for high depth bored piles. Boasting an operating weight of about 145 tons, the SR-145 HIT is able to support 24.5 m kelly rods for a maximum depth of over 120 m extendable to 138 m with a special kit. The fixed double-jack mechanism ensures a more rigid and stable mast – frame connection, providing an optimal solution for rock drilling. The rotary table has been designed with a particularly compact and light case with advantages in terms of weight and dimensions for an increased pull force under the rotary and features the Soilmec automatic torque control system, which calibrates the torque according to excavation conditions and ground resistance in order to maximize the excavation speed and therefore transfer all the available power to the tool. The CAT C18 diesel engine delivers up to 470 kW to maximize excavation performance even in the case of simultane-
Port of Savona, December, 21, 2019: departure of the first cruise of the Costa Smeralda
Soilmec SR-145 HIT drilling rig, the Soilmec flagship designed to achieve maximum performance for high depth bored piles march 2020 - ONSITEUNDERGROUND 23
DRILLING
The foundation piles of the project, drilled up to a depth of 32 m from the seabed, have a diameter from 1,100 mm and 1,700 mm
ous power requests; the Soilmec “low idle” system automatically adjusts the rpm to the minimum speed when the main circuits are not in use, providing significant advantages in terms of power efficiency and operating costs and therefore reducing pollution.
The engine is mounted in line with the longitudinal axis of the machine to improve accessibility during maintenance and is protected by fiberglass canopies featuring sound-absorbing and damping materials that make the SR-145 HITthe quietest drilling rig in its mar-
ket segment at 109 dBA LwA and suitable for works in metropolitan and residential areas. Soilmec uncompromising comfort and safety characteristics are fully met by the SR-145 HIT: full protected walkways on both sides of the machine, radio control allowing the operator to load/unload the machine on the transport trolley, 5-cameras system complete with a dedicated 7 multiscreen LCD screen, for permanent 360° view of the construction site are just some of the features installed on the machine. The cabin provides the highest comfort level featuring sliding door, air conditioning, adjustable automotive seat and touch-screen DMS monitor (providing full control over machine performance and on-site production), more ergonomic controls and joysticks. The works were carried out with no hassle and within the set times also thanks to the performance of the Soilmec equipment. On November 14, 2019 the new quay was officially inaugurated with the ribbon cutting ceremony. ■
ITALIAN ABSTRACT
L’AMMIRAGLIA DI SOILMEC Una perforatrice Soilmec SR-145 HIT è stata impiegata per i lavori di fondazione del progetto di adeguamento dell’accosto crocieristico nel bacino portuale di Savona che il 21 dicembre ha ospitato la partenza della crociera inaugurale della Costa Smeralda, la nuova ammiraglia di classe “Excellence” di Costa Crociere. L’appalto, con un importo base di 17 milioni di euro, è stato affidato all’ATI composto da RCM Costruzioni srl e Fincosit srl. I lavori di fondazione prevedevano la costruzione di una paratia costituita da casing armati alternati a delle palancole che è stata utilizzata per ampliare la banchina esistente. I pali di fondazioni del progetto erano di diametro variabile tra 1100 mm e 1700 mm, trivellati sino ad una profondità di 32 m dal fondo marino. La composizione geologica del sottosuolo, dopo un primo strato materiale di riporto, vede un alternanza di strati di sabbie medio-fini e ghiaie in matrice sabbiosa e limosa fino ad una profondità di circa 20 da piano campagna (p.c.), seguito da un substrato roccioso, costituito da scisti fratturati. Per l’esecuzione dei pali è stato scelto di utilizzare la tecnologia del palo trivellato con asta kelly telescopica e utensile di scavo di tipo bucket. Inoltre dovendo lavorare in mare la perforazione avviene all’interno di casing precedentemente infissi sul fondale utilizzando una gru equipaggiata con vibratore. La macchina utilizzata per la perforazione è stata una Soilmec SR-145 HIT, la “grande ammiraglia” di casa Soilmec sviluppata nell’ottica di ottenere le massime prestazioni per pali trivellati ad altissime profondità.
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The Soilmec SR-145 HIT is able to support 24.5 m kelly rods for a maximum depth of over 120 m extendable to 138 m with a special kit
DRILLING Bauer
In the kingdom of energy Bauer carries out further specialist foundation engineering work for hydroelectric plant in Bhutan, Punatsangchhu-I project and Punatsangchhu-II project. Up to five drilling rigs are being used at the same time, including rigs from Klemm by Stefano Vitali
T
he kingdom of Bhutan, located north of India is barely the size of Switzerland and dominated by the Himalayas, the highest mountains in the world. Over 80% of Bhutan is 2,000 m above sea level. Mountains with a heigth of up to 7,500 m mar the highest points of the country. Many rivers span several thousand meters in altitude as they make their way from north to south, creating ideal conditions for hydroelectric power. For this reason, Bhutan is pursuing an ambitious and above all sustainable energy policy. The kingdom already generates almost all of its electricity from hydropower, with the surplus being exported to neighboring India.
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Hydroelectric plant on Puna Tsang Chhu River, Buthan
Construction work has been underway on the large-scale Punatsangchhu-I project since 2009 and Punatsangchhu-II in 2013. Both hydroelectric plants are located on the Puna Tsang Chhu River, approximately 80 and 94 km from the capital Thimphu. Bauer Spezialtiefbau GmbH had already
been involved in the construction of the two hydropower plants in the past. In 2011, Bauer constructed diaphragm walls up to 80 m deep for the upstream cofferdam and executed injection work on Punatsangchhu-I. Bauer returned to the site a few years later to carry out slope stabilization after a massive landslide on the right bank of the river. In 2014, Bauer was contracted to execute injection work to seal the Punatsangchhu-II upstream cofferdam, a project that was successfullybcompleted in 2015. “The Punatsangchhu-II project involves the construction of a 90 m highbdam, an 8.5 km long pressure tunnel and several caverns in the power plant complex,” says Frank Berner, Operations Manager at Bauer Spezialtiefbau.
PASSION FOR PROGRESS Bauer Spezialtiefbau GmbH, the original parent company of the Bauer Group, has been a major driving force in the development of specialist foundation engineering. It carries out all of the customary processes of foundation engineering, primarily for excavation pits, foundations, cut-off In a cavern of the hydroelectric plant Punatsangchhu-2, Bauer was commissioned to carry out 18,000 m of soil injection for subsoil stabilization as well as to install 19,000 m of tie-back anchors
Bauer was again contracted to carry out specialist foundation engineering work for the project after an underground cavern collapsed at PunatsangchhuII. Bauer Spezialtiefbau was commissioned by main contractor Jaiprakash Associates Limited to carry out 18,000 m of soil injection for subsoil stabilization as well as to install 19,000 m of tie-back anchors. Along with various equipment for the injection work, up to five drilling rigs are being used at the same time, including
KR 806 and KR 909 rigs from KLEMM Bohrtechnik GmbH. “The main challenge of this project is the cramped working environment. With a width of approx. 18 m and a height of 8 m, the work area is extremely small, creating ands extremely challenging environment for equipment and personnel,” continues Frank Berner. “Also, we’re in the Himalayas, which presents unique challenges for logistics.” Bauer’s work on Punatsangchhu-II will take around 15 months. ■
walls and ground improvements on a worldwide basis. In doing so, BAUER Spezialtiefbau GmbH works closely together with their over 50 subsidiaries and branches across the globe. Regional networks around the world allow for the quick and flexible application of machines, teams and expertise. Bauer Spezialtiefbau offers their customers individual, creative and economical specialist foundation engineering solutions for demanding construction projects, from planning through to execution.
ITALIAN ABSTRACT
NEL REGNO DELL’ENERGIA Il regno del Bhutan sta perseguendo una politica energetica ambiziosa e soprattutto sostenibile. Il regno genera già quasi tutta la sua elettricità dall’energia idroelettrica, con il surplus che viene esportato nella vicina India. Dal 2009 sono in corso i lavori di costruzione del progetto su larga scala Punatsangchhu-I e dal 2013 del progetto Punatsangchhu-II. Entrambe le centrali idroelettriche sono situate sul fiume Puna Tsang Chhu, a circa 80 e 94 km dalla capitale Thimphu. La società specializzata Bauer Spezialtiefbau GmbH era già stata coinvolta in passato nella costruzione di due centrali idroelettriche. Nel 2011 Bauer ha costruito muri diaframma fino a 80 m di profondità per il cofferdam a monte e ha eseguito i lavori di iniezione sulla diga Punatsangchhu-I. Bauer tornò sul sito qualche anno dopo per effettuare la stabilizzazione del pendio dopo una massiccia frana sulla riva destra del fiume. Nel 2014 Bauer è stata incaricata di eseguire lavori di iniezione per sigillare il cofferdam a monte del Punatsangchhu-II, un progetto che è stato completato con successo nel 2015. Bauer svolgerà ora ulteriori lavori di ingegneria per fondazioni specialistiche per gli impianti idroelettrici in Bhutan, progetto Punatsangchhu-I e progetto Punatsangchhu-II. Fino a cinque impianti di perforazione venUp to five drilling rigs are being used at the same time, including KR 806 and KR 909 rigs from Klemm
gono utilizzati contemporaneamente, compresi gli impianti di perforazione di Klemm.
march 2020 - ONSITEUNDERGROUND 27
DRILLING Liebherr
New drilling rig LB 45: increased performance and higher flexibility
A higher torque, a wider range of applications and useful assistance systems for improved operator comfort and increased safety in one elegant design: Liebherr presents the LB 45, successor to the proven drilling rig LB 36 by Riccardo Lorenzi
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L
iebherr presents the LB 45, successor to the proven drilling rig LB 36.The name of the brand new LB 45 derives from the torque of 450 kNm. That is an increase of approximately 10 % in comparison to the already high performance of the LB 36. Both the counterweight and the leader are modularly constructed. This enables quick and easy assembly and flexible application. The leader top is designed for different drilling axes and is therefore suitable for all applications. Through the enhancement of the drilling axes by 500 mm, the LB 45 can be applied for drilling diameters up to a maximum of 3.3 m. At the same time, the maximum drilling depth
The brand new Liebherr-LB 45 drilling rig
for Kelly drilling with 5-fold Kelly bar has been increased to 100 m and so significantly improved. The strong winches with a maximum pull force of 42 t enable highest performance even under the most difficult conditions. Furthermore, the noise emission is considerably reduced thanks to their elastic mounting. Features for increased safety and easier operation The ground load-bearing capacity and the monitoring of the ground pressure are decisive for the safe operation of a construction machine. The Ground Pressure Visualization of the LB 45 calculates the current ground pressure of the machine in real time and compares it with the specified safety limits of the relevant jobsite. The ground pressure is displayed in the operator’s cab and the operator is permanently aware of whether the machine is situated in, or is approaching, a critical area. Dangerous work stages can so be avoided or adapted in good time. Locking of the Kelly bar’s telescopic sections is made significantly easier due to the Kelly Visualization system in the LB 45. Thanks to the real time display of the Kelly locking recesses of the Kelly bar on the cabin monitor, the operator is permanently informed of the actual distance to the next locking recess. Colour indications inform when the bar can be locked. Furthermore, false positioning of the Kelly bar during the shake-off process is indicated through a warning signal.
During continuous flight auger drilling the concreting process is automated thanks to the Drilling Assistant. The remote control simplifies the loading process for transportation as well as the assembly of the machine. All assistance systems contribute to time savings, higher availability of the machine and a significant increase in safety during operation.
SOLUTIONS FOR DEEP FOUNDATION WORK The Liebherr Group has a decentralized organizational structure and comprises eleven product divisions. The highest level of management within the Group is a shareholders’ committee made up exclusively of members of the Liebherr family. Liebherr deep foundation machines can handle the entire range of deep
Comfort in an elegant design: the new operator’s cab The machine is equipped with a new cabin concept, which gives the LB 45 an elegant appearance and, above all, focuses on increased operator comfort. This is achieved through a modern air-conditioning system with improved airflow, an optimized field of vision and reduced noise protection, as well as an orthopaedic operator’s seat with integrated
foundation processes – from drilling, pile driving and slurry wall installation to soil improvement.These provide the optimum deep foundation for ambitious construction projects. Liebherr deep foundation machines are characterised by their versatility. They are powerful under extreme conditions, reliable in long-term use and cost-effective in operation. Besides the basic machines, Liebherr also offers attachments and tools. Liebherr LB 45 drilling rig double rotary
heating and cooling. Further features for the operator are an optional cooler for provisions as well as a USB port for charging mobile phones. ■
ITALIAN ABSTRACT
NUOVA PERFORATRICE LB 45: MAGGIORI PRESTAZIONI E MAGGIORE FLESSIBILITÀ Una coppia più elevata, una gamma più ampia di applicazioni e utili sistemi di assistenza per un maggiore comfort dell’operatore e una maggiore sicurezza in un unico design elegante: Liebherr presenta LB 45, modello che sostituisce la perforatrice di successo LB 36. Il nome della nuova LB 45 deriva dalla coppia di 450 kNm. Questo è un aumento di circa il 10% rispetto alle già elevate prestazioni della LB 36. Sia il contrappeso che l’antenna sono costruiti in modo modulare. Ciò consente un assemblaggio rapido e semplice e un’applicazione flessibile. Il braccio è progettato per diversi assi di foratura ed è quindi adatto a tutte le applicazioni. Attraverso il potenziamento degli assi di perforazione di 500 mm, la LB 45 può essere applicata per diametri di foratura fino a un massimo di 3,3 m. Allo stesso tempo, la profondità massima di perforazione per la perforazione con barra Kelly è stata aumentata a 100 m e quindi notevolmente migliorata. I forti argani con una forza di trazione massima di 42 t consentono le massime prestazioni anche nelle condizioni più difficili. Inoltre, l’emissione di
Liebherr LB 45 drilling rig in Kelly drilling
rumore è notevolmente ridotta.
march 2020 - ONSITEUNDERGROUND 29
EQUIPMENT COMACCHIO
CH 300, the new entry in large diameter piling rigs range On display at Conexpo 2020, the CH 300 is the smallest Comacchio piling machine. It has a transport weight of less than 30 tons (64,800 lbs) with the rotary head and Kelly bar installed. The rig is fully selferecting: once on site, it can be off loaded from the truck and set up with the help of automated rigup systems. The lateral extensions of the undercarriage allow for reduced dimensions during transport and ensure, when opened, a good stability of the machine during operation. This allows to significantly facilitate transport operations and to reduce the high mobilization costs usually associated with this kind of equipment. Despite the lightweight design, the CH 300 offers a high torque output, allowing to undertake drilling tasks that would normally require the use of larger and heavier equipment. The CH 300 can be configured both for uncased and cased piles (with casing
installation carried out by rotary drive), up to a maximum depth of 159 ft. The rig can be easily converted to perform CFA drilling with augers of 2’7” maximum diameter. The use of high-strength steels allows to reduce weight without sacrificing performance and reliability on site. The CH 300 is the first one of the CH range equipped with an innovative HPE (High Power Efficiency) system that significantly
reduces fuel consumption. To meet the most stringent emission regulations, the CH 300 features Stage V technology (EPA Tier 4 Final). With a view to improving energy efficiency and environmental sustainability, the engine cooling system has also been optimized by Comacchio to control the heat dissipation according to the actual operating requirements of the machine.
TECH DATA Diesel engine:
Cummins B4.5/ QSB4.5 (EU Stage V/US EPA Tier 4F)
Power rating:
142 kW (190 HP)/2000 rpm - 123 kW (165 HP)/2000 rpm
Max nominal torque: Main winch: Transport weight CPD*: Max pull up force: *Cylinder pull down
30 ONSITEUNDERGROUND - march 2020
132 kNm 120 kN 29,400 kg 148 kN
EQUIPMENT FRASTE
Fraste Roto Handling Clamp: how to simplify your job on drilling site FRH – Fraste Roto Handling Clamp is a very useful accessory that will improve your day productivity. With the Fraste FRH – Fraste Roto Handling clamp – attached to your excavator handling drill pipes & casing will become very easy and effective. This simple, strong and safe hydraulic device is properly designed to be applied on excavators and can handle different diameters drill pipes and casings; but its first feature is avoiding the manual handling of drill pipes and casing that
means much more safety for the drilling crew. Main features of the Fraste FRH - Fraste Roto Handling device are:
• Wide range of gripping diameters in only one clamp; • Continuos clamping axles with any gripping
diameter; • Two or three clamps are available as option, according to pipes and casing length; • Simple built-in hydraulic system for an easy and quick connection to any excavator. There are two models, FRH2 and FRH3, combinable two weight classes for excavators, 5-6 ton and 8-10 ton. It can manage single pipes of maximum length 6,000 mm and double pipes up to 3,000 mm. Weight of the equipment, in the two versions is 620 or 800 kg.
DAL 1958, SPECIALISTI NEI RICAMBI D’USURA PER MACCHINE MOVIMENTO TERRA E IMPIANTI, AL SERVIZIO DI CAVE E CANTIERI
Filiale in Liguria: Via Enzo Ferrari, 3/R -17052 Borghetto S. Spirito (SV) Tel. 0182.971734 - Fax 0182.973295 - gnliguria@giorgionovara.com GIORGIO NOVARA Srl Via G. Di Vittorio, 13 10090 Cascine Vica - Rivoli (TO) Tel. 011.9504400 - Fax 011.9575800 info@giorgionovara.com www.giorgionovara.com
RAM ITALIA Srl C/da Mancogna 98074 Naso (ME) Tel. 0941.955024 - Fax 0941.955177 ramitaliasrlvirgilio.it www.ram-italia.com
Filiale in Emilia Romagna: Centro di produzione - Via Roma, 544 - 29010 Alseno (PC) Tel. 0523.949123 - Fax 0523.949390 - gnemilia@giorgionovara.com Filiale in Toscana: Via Bruno Sarri, 14 - 50019 Sesto Fiorentino (FI) Tel. 055.4200484 - Fax 055.4204495 – gntoscana@giorgionovara.com
CONCRETE Penetron Italia
Innovation in mix designs for shotcrete Waterproof time reactive projected concrete, using crystallization technology. “Self-healing” residual porosity in structural shotcrete. Exploring the artificial tunnel at San Martino Hospital in Genoa by Valentina Violante, Enricomaria Gastaldo Brac*
P
rojected concrete, also known as “spritz-beton” in German or “shotcrete” in English, belongs to a category of special concretes that can be defined as a cement-based mix pneumatically sprayed at high speed over a given surface. From a regulatory standpoint, it is similar to concrete cast on site, and as such must be specially designed. Unlike ordinary concrete, however, it does not require formworks, allowing castings in the most varied shapes or complex geometric configurations. Nonetheless,
32 ONSITEUNDERGROUND - march 2020
a proper compacting must exploit the speed of the conglomerate’s impact on the substrate. Special mix designs must be used to make a sprayed concrete, typically characterized by a high percentage of cement, low water-cement ratio, reduced aggregate diameter and accelerator setting admixtures. Applications The technology for the application of shotcrete was created in 1911 in the USA, and was introduced in Europe in 1920. Two application procedures exist,
dry and wet, depending on how the water is introduced into the mixture. In “dry-mix” mode, the dry ingredients (cement, aggregate and any additives) are conveyed in a delivery hose to the spray lance, where water and accelerators are added. The “wet-mix” process, on the other hand, pre-mixes the aggregates and water conveyed in the delivery hose, and only the accelerating additive is added in the lance, in a hose that is separate from the main pump. In both mixing processes, the conglomerate is accelerated by compressed air before leaving the spray lance. (fig. 1)
Typical composition The basic components of shotcrete are the same as for ordinary concrete, but with some substantial differences, particularly in the aggregate’s dosage and grain size: • Aggregate: the maximum aggregate size must not exceed 8-10 mm in diameter, as a very large aggregate would require a large amount of cement to prevent rebounding. • Cement: the expected amount of cement is generally comparable to that of a high strength class concrete. The minimum content is 450 kg/m3. • Gripping accelerators: allow for high strengths to be reached in a short time. There are two different types of accelerators: silicate-based alkalis (5-15% on the cement weight) or so-called “alkali-free” (4-8% on the cement), based on aluminium sulphates. The former allow for mechanical performance to be achieved in a shorter time than the latter, although the alkali-free curing process makes the shotcrete more resistant (up to 50% more than a shot concrete with sodium silicate accelerators), allowing for a higher degree of compaction to be achieved. • Additives: the addition of superplasticizing additives is quite common and necessary to ensure an adequate fluidity (class S4) to the mixture; pozzolanic additives can also be used to lend more
Fig. 1 - Typical application of shotcrete
thixotropy to the conglomerate, as well as to provide protection from sulphates; cohesize additives; silica fumes; fibres, etc. Admixture for shotcrete Whether acting as a filler, protective, consolidating or self-supporting structural coating, generally applied to underground works, including with counter-pressures or when subject to chemical-physical aggression, in both dry or wet on-site sprayed applications, a waterproof and durable cement matrix is a necessity. Thickness, mechanical strength, resistance to chemical aggression and run-off are all important variables for the choice of components and dosages for the design mix, without neglecting features such as permeability and durability, including in situations of capillary water counter-thrusting. The inclusion of Penetron Admix, a hydrophilic powder additive based on Portland microcements and proprietary reactive principles, in mix designs with a high cement content for applications in especially humid environments, including thrust water, guarantees a continuous densification of the matrix over time, thanks to the soluble element’s post-crystallization. This exclusive ability to self-heal cracks up to 0.4 mm wide, which remains throughout the product’s entire service life, is reactivated whenever there is moisture, effectively render-
Fig. 2 - The inclusion of Penetron Admix in mix designs guarantees a continuous densification of the matrix over time
ing the concrete waterproof while protecting it from aggressive agents. (fig. 2) The main applications are of two types: • Structural shot concrete (both for new projects and renovations) in: tunnels, hydraulic pipelines, dams, open channels, concrete face walls, etc. • Containment shot concrete against underground support structures: diaphragms, piles, micropiles, ribbing, etc. Penetron mix designs for shotcrete require only alkali-free accelerators, Portland cements with pre-set minimum quantities per cubic meter, a suitable aggregate grading curve, hyper-fluidifying additives and specific reinforcement fibers. The processing during the compacting phase must be carried out by specialized operators, applying several well-consolidated layers that are appropriate matured, overlapping the layers in order to reduce cracks and paying particular attention to wet maturation. The artificial tunnel at San Martino Hospital in Genoa A significant example of the application of waterproof and reactive shot concrete using the Penetron System, in combination with the Penetron Crystallization Reactive White Tank System, is at San Martino Hospital in Genoa, currently undergoing a phase of reorganization, which includes the construction of new functional areas that are all connected by lifts and tunnels, doing away with having to walk dozens (sometimes hundreds) of meters in outdoor passageways, as is currently the case. The tunnel that will lead from Pavilions 12 and 40 to the Specialities Pavilion march 2020 - ONSITEUNDERGROUND 33
CONCRETE
Fig. 3 - Scheme of the artificial tunnel at San Martino Hospital in Genoa
has just been built, at a total cost of €3 million. The executive project, signed by the Studio Rolando of Sanremo, includes the construction of the new underground passage for hospital stretchers, with a total length of 90 m, connected to the Medicine Pavilions through a new elevator shaft, and to the Specialities Pavilion through an artificial tunnel. (fig.3) Penetron Italia has responded to the challenge of designing and implementing the waterproofing of the concrete structures for the various segments of the new passage, analyzing them individually and in their interfaces, in order to best adapt to the characteristics of each manufactured product.
The first segment is represented by a “top down” vertical shaft, and an artificial tunnel, both cast on-site using the
Penetron System, and a white waterproof reactive crystallization tank: the concrete was admixed with Penetron Admix additive and complementary accessories were prepared for the stagnation of the construction and programmed cracking joints, as well as the stagnation of the through elements. The second segment, consisting of the natural tunnel, required a preliminary treatment with shot concrete using Penetron Admix additive for the coating of threads and ribs, so as to facilitate the positioning of the next membrane layer, against which the final concrete casting was then implemented. (fig. 4) * Valentina Violante, Engineer, Technical Office Penetron Italia s.r.l. Enricomaria Gastaldo Brac, Architect, CEO Penetron Italia s.r.l. ■
Fig. 4 - View of the second segment of the project, consisting of the natural tunnel
ITALIAN ABSTRACT
INNOVAZIONE NEL MIX DESIGN PER CALCESTRUZZO PROIETTATO Il calcestruzzo proiettato, noto anche come “spritz-beton” in tedesco o “shotcrete” in inglese, appartiene a una categoria di calcestruzzi speciali che possono essere definiti come una miscela a base di cemento spruzzata pneumaticamente ad alta velocità su una determinata superficie. Per la realizzazione di un calcestruzzo proiettato (o spruzzato) è necessario utilizzare speciali mix design, caratterizzati tipicamente da un’alta percentuale di cemento, basso rapporto acqua-cemento, diametro ridotto dell’aggregato e additivi acceleranti del processo. Che si tratti di un rivestimento strutturale, protettivo, consolidante o autoportante, generalmente applicato a lavori sotterranei, anche con contropressioni o in caso di aggressione chimico-fisica, in applicazioni a spruzzo in situ asciutte o bagnate, è necesaria una matrice di cemento durevole. L’inclusione di Penetron Admix, un additivo in polvere idrofilo a base di microcementi Portland e principi reattivi proprietari, nei progetti di mix desing con un elevato contenuto di cemento per applicazioni in ambienti particolarmente umidi, tra cui l’acqua di spinta, garantisce una densificazione continua della matrice nel tempo, grazie a la postcristallizzazione dell’elemento solubile. Un esempio significativo dell’applicazione di calcestruzzi impermeabili e reattivi con il Penetron System, in combinazione con il Penetron Crystallization Reactive White Tank System, è l’ospedale San Martino di Genova.
34 ONSITEUNDERGROUND - march 2020
CONCRETE ITALCEMENTI
Tailor made solutions for the Brenner Base Tunnel Once completed in 2025, the 64 km Brenner Base Tunnel (BBT) will be the longest underground railway tunnel in the world, passing under the Alps from Innsbruck (Austria) to Fortezza (Italy). The Gotthard Base Tunnel, which was inaugurated in 2016 and is currently the longest tunnel in the world with 57 km, will be put in second place after the opening of the Brenner Base Tunnel. The excavation work in progress of this smaller tunnel (5-6 meters in diameter) allows an even greater understanding of the composition of the soil and the rock formation compared to the previous samples. An interactive route plan helps tracking the progress of excavations in individual sections. Roland Murr is the engineer in charge of the project on the Austrian side. He’s working side by side with the cement and concrete supplier, consulting with geologists to determine the injection mixtures needed before each excavation phase. Different types of rock require different types of cement for tunnel stabilization, such as a cement providing a higher resistance to sulphates. The growing length of the access tunnels must also be taken into account.
A fast-hardening poured concrete is used to avoid collapses, but the material must also remain workable up to twelve hours, so that it does not harden prematurely during delivery.
In the exploration gallery, a layer of projected concrete constitutes the finished surface. The special concrete mixtures used for these purposes are supplied by Mobile Betonkonzepte (Munich) through nine concrete mixers for readymixed concrete, filled in the various concrete plants in the area surrounding the Brenner Pass. The cements specifically developed for the production of the projected concrete are purchased by HansPeter Haid, CEO of the Rohrdorfer Zement’s Eiberg plant - a joint venture of HeidelbergCement. Overall, more than 100,000 tons of cement will have to be delivered to complete the tunnel. On the Italian side, Calcestruzzi delivers ready-mixed concrete for the Brenner Base Tunnel (Lot Mules 2-3) as part of the “San Francesco” consortium thanks to a production plant coordinated by Mario Simone and located 200 meters inside the entrance of the tunnel. The cement both for jet grouting and concrete is supplied by Italcementi through the Italcementi cement factories in Sarche (TN) and Rezzato (BS). march 2020 - ONSITEUNDERGROUND 35
TOOLS Adriatech
Reliability, efficiency, innovation in drilling equipment A real drilling specialist, the Abruzzo-based company provides a full range of equipment to meet the needs of those working in this industry by Riccardo Lorenzi
A wide range of TCI amd Tooth Rock Bits of the major brands
A
driatech chose to settle 33 years agoin Pescara, a city in central Italy washed by the Adriatic Sea. Born as a Supply Company for Italian and Mediterranean oil companies, the Abruzzo-based brand has evolved over time to become a real specialist in design, construction and distribution of drilling equipment. Recognized values Professionalism, know-how, cutting-edge products and equipment, as well as a highly qualified technical-commercial staff, specialized workshops, contracts and exclusive agreements with various historic US companies are the key points of Adriatech activities. The company, in particular,
36 ONSITEUNDERGROUND - march 2020
In the wide range of Adriatech products there are different types of down-the-hole hammers made in USA, as well as DTH Bits and Hole Openers
manufactures and distributes a wide and continuously growing range of equipment for oil companies, for water wells drilling contractors, exploration companies, piling and foundations, HDD, mining, both in Italy, in Europe and worldwide. The current Adriatech product range is definitely wide and varied and includes drilling tools (rock bits, three/ four blades bits, PDC, claw bits, DTH hammers, holeopeners, reamers), drilling unit components (drill pipe, drill collars, stabilizers, subs, Hoisting Plugs-rotating and not-rotating), fishing tools/milling tools, drilling mud control systems (pumps, tanks, mixers, desander/desilter, shale shakers) and handling tools (elevators, slips, tongs, clamps), additives/high pres-
OUR PHILOSOPHY IS QUALITY “About 70% of our products are distributed abroad, in Europe and worldwide. We work in synergy with several drilling rigs manufacturers and what differentiates us from our competitors are our first 20 years’ experience, when we worked in the oil industry. We grew a solid expertise in some Non Rotating Diverter is used to improve drilling conditions for stationary and mobile installations. Suitable for Oil & Gas, Water Wells, Geothermal, Consolidation Works, etc.
sure joints/diverters/float valves, laboratory instruments and measuring and control tools (tripoint calipers, bit gauges). The best sellers Some solutions stand outwithin this wide range and gained Adriatech a strongreputation in the international drilling sector. Since 1987 the company from Pescara is a qualified distributor of rock bits - from the smallest diameter 215/16” up to 36”- of the best US oil brandsas well as the brands Thompson USA, Glinik and Halliburton-Adaero. Adriatech also manufactures hole openers with sealed bearing milled tooth or tungsten carbide insert cutters according to the rock formation to be drilled. Drilling mud circulation is assured through the nozzles located under cutter shoulders. Each hole openeris “custom made”, suitable for drilling in an optimal way depending on the specific work requirement based on customer needs.
ING. SALVATORE PRANO ADRIATECH TECHNICAL MANAGER
equipment and drilling technologies,
which we are however still waiting for,
which we then used in different areas.
including TAV. Being trained as an oil
Our philosophy is quality: if you man-
engineer I like to study the best way
ufacture a hole stabilizer or a drilling
to produce energy and I believe that
bit in the right way, they will obvious-
keep following the path of fossil fuels
ly work better than a ‘cheap’ product.
is a wrong choice. Italy and the whole
This means that you cannot use low
world must switch to more advanced
prices as leverage, therefore suffering
energy production technologies. In
the competition from companies that
my opinion, all road transportation
base their business on this philoso-
should switch to electric (or at least
phy. On some heavy equipment, such
fuel cells) and we need to get back to
as the drilling unit components, some
nuclear power for low-cost, unlimit-
companies offer much lower prices
ed energy. I have great hopes for the
and processing costs than ours and
ITER (International Thermonuclear
therefore they are competitors which
Experimental Reactor) project, which
are hard to beat. Especially in recent
is under development in the south
years we experienced some problems
of France: if we can produce energy
in this regard, also due to a quality
at very low cost and in a non-pollut-
improvement which should be rec-
ing way, thanks to the nuclear fusion
ognized to our competitors. Our gov-
we will start a real revolution. At that
ernment has repeatedly announced
point, we might switch everything to
the launch of various major projects
electric power.”
The flagships Equally important in the Adriatech range are the DTH hammers, the bits and the bit hole openers made in USA: featuring a reversible wear sleeve and spare parts always available, they provide a long life span. DTH hammers
Adriatech boasts a historic partnership with Lamberti, a company specialized in drilling fluids additives and chemicals such as foaming agents, polymers, etc. All these products are always available in the Pescara warehouse
and their accessories, in particular, provide high quality and reliability and are designed to last. Among the equipment distributed by Adriatech we find the elevators for wells, filters and production/pumping tubing. Also worth mentioning are the conical clamps, consisting of a sturdy seat equipped with support brackets and treated steel tongs with lifting handles, used for laying and anchoring welltubings, filters and production tubingsequipped with coupling joints. These solutions are robust and at the same time light, simplify piping operations by eliminating possible slips and avoiding piping conical clamps. Conical clamps are made of a rugged bowl equipped with support hangers and slips in special steel complete with march 2020 - ONSITEUNDERGROUND 37
TOOLS
The wide choice of “casing elevators” proposed by Adriatech ranges from “light weight” (with capacity from 5 to 10 t) to “HeavyDuty” (from 20 to 50 t)
lifting handles. They are used during setting and anchorage of casing pipe, screens and production tubing. Rugged and light-weighted, they are of great help to the tubing operations avoiding possible slipping and ovalization of the
pipes, and reducing waste of time during manoeuvring operations. Innovation and tradition The Non Rotating Mini Diverter is the most recent innovation introduced on
the market by Adriatech: it is a solution used for fixed and mobile systems in order to improve drilling conditions, diverting the exhaust material coming from the well towards tanks placed laterally, thus to ensure cleanliness and easy access to the operation area. Its use is particularly indicated in the Oil & Gas industry, as well as for water wells, geothermal energy, consolidation works and other similar applications. We conclude by highlighting the fact that for over 25 years Adriatech has been the distributor/Stock Point of Lamberti, a manufacturer of special products for drilling (foaming agents, polymers, etc.). This partnership allowed the creation of a historic Stock Point of Lamberti products in Pescara, which are readily available for immediate delivery. ■
ITALIAN ABSTRACT
AFFIDABILITÀ, EFFICIENZA, INNOVAZIONE NELLE ATTREZZATURE DI PERFORAZIONE The Abruzzo based company, on the basis of customer needs, is able to supply Hole Openers, for HDD drilling as well
“Casing clamps” and “slips” are part of the excellence represented by the Adriatech range, also recognized abroad: a share of approximately 70% of its production is in fact exported, directly or indirectly
Quality Rock Bits, of various sizes and types, from size 215/16” thru 36” 38 ONSITEUNDERGROUND - march 2020
Autentica specialista della perforazione, l’azienda abruzzese offre una gamma completa di attrezzature grazie alla quale riesce a soddisfare le molteplici esigenze di chi opera in questo settore. È a Pescara, città dell’Italia centrale bagnata dal Mar Adriatico, che Adriatech ha scelto di insediarsi 33 anni fa. Nata come Supply Company per le società petrolifere italiane e del bacino del Mediterraneo, l’azienda abruzzese si è evoluta nel tempo divenendo un’autentica specialista nella progettazione, realizzazione e distribuzione di attrezzature per la perforazione. Professionalità, know-how, prodotti e attrezzature all’avanguardia, nonché uno staff tecnico-commerciale altamente qualificato, workshop specializzati, contratti e accordi in esclusiva con diverse storiche società statunitensi: sono questi i punti cardine e le attività intorno a cui ruota l’attività di Adriatech. L’azienda, nella fattispecie, produce e distribuisce una vasta gamma di attrezzature in continua crescita e ottimizzazione, sempre al servizio di compagnie petrolifere, contractor di perforazione di pozzi petroliferi e pozzi per la ricerca idrica, società di sondaggi, palificazioni e fondazioni, HDD, miniere. Il tutto, sia in Italia che in Europa e nel mondo. L’attuale gamma produttiva Adriatech è davvero molto ampia e variegata e include: utensili di perforazione (rock bits, trilama/quadrilama, PDC, “claw bits”, martelli fondo foro, “holeopeners”, “reamers”), componenti batteria di perforazione (aste, “drillcollars”, stabilizzatori, riduzioni, teste di sollevamento fisse e girevoli), attrezzi di pescaggio/”millingtools”, attrezzature per il trattamento dei fanghi (pompe, serbatoi, miscelatori, “desander”/“desilter”, shaleshakers) e di manovra (elevatori, cunei, chiavi, clampe), additivi fango/ giunti alta pressione/diverter/”float valves”, strumenti laboratorio fanghi e strumenti di misura e controllo (“tripointcalipers”, “bit gauges”).
TOOLS SIP&T
FDP: precious added value The topic of infrastructure is part of the decisional debate, both locally and nationally. Choosing the right planimetric and altimetric diagram, integrating it with existing infrastructure, the need to mitigate environmental impact, limiting insitu interference, and reducing emissions into the atmosphere are some of the performance requirements that need to be met and combined at the same time. In this context, the role of underground construction assumes a relevant value. Administrators, engineers and companies are thus involved, each at different times and stages, in the planning, design, construction, operation and maintenance of the work. The technical solutions to be taken require engineers expertise and experience, combined with contractors tradition and innovation. FDP (Full Displacement Piles) is a pile-foundation technology that aptly summarises the characteristics described above. Compared to
driven piles, drilling pile presents the problem of the hole’s walls collapsing. The solution to this inconvenience requires the use of casings, bentonite and polymers. With the technology of compaction piles, the tool penetrates into the soil, loosens and thrusts it against the walls of the hole (a condition quite similar to the driven pile technology), but without waste material and therefore keeping clean the construction site. Long applied especially in Northern Europe, this type of piles has experienced considerable development in recent years, given the increasingly high cost of disposing of debris. This method does not involve removal of the soil and therefore offers an alternative to drilled piles. The soil is compacted thanks to a special rotating tool, which, depending on
the project, can have different diameter. The piling operation and simultaneous soil compaction improve its thickness compared to the initial conditions, with a substantial improvement of the pile’s tip and lateral resistance of the foundation. The absence of material removal, actually, requires that the soil’s volume be pusher laterally and in depth, improving the overall geotechnical resistance. FDP piles with diameters ranging between 300 and 800 mm at a depth of 40 m, using concrete with a fluid consistency, if necessary mixed, to obtain the appropriate workability. This technology can be used in any kind of soil with little or medium strength, and the presence of any groundwater does not represent a hindrance. It also can be used in unstable soils without casings, because the method does not involve any “open excavation”. Operationally, once the machine has been positioned, the procedure involves excavation with the tool rotating and in continuous movement.
march 2020 - ONSITEUNDERGROUND 39
SYSTEMS Brigade Electronics
Heavy telescopic mining range now performs even better MHT - Manitou Heavy Telescopic handlers mining range now adopted the new generetion model of intelligent camera monitor system by Brigade Electronics, an ad hoc solution that guarantees a full view of the vehicle and its load by Luca Bernazzani
M
anitou started life in France in 1958 and is now a world leader in the materials handling sector. Over 60 years ago Marcel Braud designed his first forklift truck, but since then the range has grown to include rotating telehandlers, masted forklift trucks, aerial work platforms, articulated loaders, and backhoe loaders. A complete range, with equipment for every application. This is also true of the MHT (Manitou Heavy Telescopic) Mining range, which has been engineered to carry heavy and bulky loads across rough terrain in particularly difficult environments, powered by engines tailored to suit the destination country. 40 ONSITEUNDERGROUND - march 2020
Front view of the Manitou telehandler with Brigade Electronics system
An exclusive range Fully made in Italy, the range includes telehandlers with a lift range of between 7 and 10 metres and a load capacity ranging between 9 and 23 tonnes – a perfect mix of efficiency and versatility. All models are designed to maximise productivity, and of course safety. A large number of attachments to fit the range are available, making the vehicles in the MHT series truly multi-purpose – they can pick and carry large blocks of stone or marble, or handle long components such as steel bars, rails or metallic structures. And, thanks to the collaboration between Manitou and Brigade Electronics, all these operations are conducted with total regard for the safety of both drivers and quarry workers.
Manitou MHT new system on board Brigade Electronics specialises in safety systems for commercial vehicles and plant machinery. Manitou’s materials handling vehicles have been fitted with Backeye®360 for some time: this system combines, in a single real-time image, all the information from four high-mounted cameras positioned around the vehicle thereby eliminating blind spots. But now Manitou has moved away from the first version of Backeye®360 and adopted the new generation model, which performs even better: the area that can be viewed on the monitor has increased by 22%; the configuration and views can be personalised to fit the application with an ex-
Details of the system on top of the cab
tensive 19 monitor visualisation modes to choose from based on the speed chosen; either horizontal or vertical viewing can be selected, including when in splitscreen mode. In other words, in addition to displaying full screen panoramic images of the vehicle, the screen can be subdivided to focus on selected views, such as the areas to the front or to the rear of the vehicle, ideal when manoeuvring at low speed. These constitute a range of upgrades to a system that was already highly sophisticated, one that uses software specially designed to flatten ultra-wide-angle digital images, instantly eliminate fisheye distortion and balance out any variations in brightness whilst processing and merging in real time the various shots that are used to build a single image – one that is clear and visible on the cabin monitor. A tailor made solution for Manitou For the larger vehicles in the Mining Series, Manitou and Brigade Electronics have designed an ad hoc solution that guarantees a full view of the vehicle and its load. Specifically, the MHT10230 vehicles are fitted with a VBV-320C video camera in addition to Backeye®360 so that the surrounding area – including the area beyond the load – can be viewed even more accurately. VBV-320C is a flush mount eyeball camera for normal viewing with a lens that can rotate 180°. It is robust and suited to work in extreme conditions: it has 5 infrared LEDs – crucial in poor light conditions – and can function at temperatures ranging from -30° C to +70° C; it can withstand mechanical vibrations up to 8.5 G, and shocks up to 51 G. It is paired with a DW-1000-TX transmitter
Monitor can be split into multiple views
The monitor inside the cabin
and a DW-1000-RX receiver, both powered by the vehicle, to enable viewing on the cabin monitor. The equipment is wireless meaning that cables are not required: this is particularly beneficial
Rear view of the vehicle with detail of the Brigade system
in vehicles where routing cables is problematic and where, as a consequence, cables are prone to damage. The images from Backeye®360 and from VBV-320C are sent to a 7 inch screen in the cabin – a Brigade VBV770M. This is solid and resilient and has a battery life of 20,000 hours. The screen can be split to give up to four images and is anti-glare, high definition and well illuminated. It has a lock button to prevent tampering and the menu is simple and user-friendly. Manitou is considering fitting Backeye® 360 into all its materials handling vehicles, as clients appreciate its merits and increasingly request it. It’s beneficial when manoeuvring and crucial for total safety in all working environments, whether quarries, building sites or the open road. ■
ITALIAN ABSTRACT
LA GAMMA PESANTE DI TELESCOPICI SEMPRE PIÙ PERFORMANTE MHT - La gamma Manitou Heavy Telescopic handlers per il settore minerario ha ora adottato il modello di nuova generazione del sistema di monitoraggio intelligente della telecamera di Brigade Electronics, una soluzione ad hoc che garantisce una visione completa del veicolo e del suo carico. Brigade Electronics è specializzata in sistemi di sicurezza per veicoli commerciali e macchinari per impianti. I mezzi Manitou per la movimentazione dei materiali sono stati equipaggiati con Backeye®360 già da tempo; ma ora Manitou ha adottato il modello di nuova generazione, che offre prestazioni ancora migliori: l’area che può essere visualizzata sul monitor è aumentata del 22%; la configurazione e le viste possono essere personalizzate per adattarsi all’applicazione con una vasta gamma di 19 modalità di visualizzazione del monitor tra cui scegliere in base alla velocità scelta; è possibile selezionare la visualizzazione orizzontale o verticale, anche in modalità schermo frazionato. In altre parole, oltre a visualizzare immagini panoramiche a schermo intero del veicolo, lo schermo può essere suddiviso per mettere a fuoco le viste selezionate, come le aree nella parte anteriore o posteriore del veicolo, ideale durante le manovre a bassa velocità.
march 2020 - ONSITEUNDERGROUND 41
TECHNOLOGIES DAT instruments
The new DAT TinyLog
A project evolution of datalogger with which it’s possible to connect any kind of sensor. This new datalogger is totally versatile and can be used in any drilling sector by Gianni Gennari
42 ONSITEUNDERGROUND - march 2020
D
AT TinyLog is the name of the new datalogger of DAT instruments. It is high technology in 35 cm wide, 25 cm height and less than 6 cm thickness. Its monitor is 12”, color touch screen.
TOTALLY VERSATILE The new DAT TinyLog is a champion of versatility. As it is possible to connect any kind of sensor, this new datalogger can be used in any drilling sector such as:
A project evolution Born from the top range DAT WideLog, this new instrument, as usual for DAT instruments, is born from the market and from the demands of specific needs of operator. It is a product with high performance and maximum functionality and connectivity together with small dimensions. “From DAT WideLog” – Amedeo Valoroso, CEO of DAT instruments, says – “the DAT TinyLog has inherited all main technical characteristics. DAT TinyLog monitor is a 12” coloured touch
• Drilling, Cement injection, Geognostic survey, DAC test • Jet grouting • Grouting, TAM, GIN • Low pressure cement injection, Compensation grouting • Deep mixing, Soil mixing, DSM • Vibroflotation, Vibrocompaction, Sand Compaction Piles • CFA • Diaphragm walls, Hydromills • Water tests, Lugeon test.
drive or uploaded to the Internet: in fact, the DAT TinyLog is equipped with a Ethernet port and Wi-Fi antenna for Internet connection. Moreover, it is also possible to install a 3G-4G modem. During the operating phase data are transferred to every single hole, and they are available in the office in real time. They can be displayed on every kind of device: PC, smart phones or tablets; all files are compatible with Microsoft Excel and OpenOffice Calc. “The new DAT TinyLog” – says Amedeo Valoroso – “is a jolly. It is perfect for the most innovative markets but able to work even in the most common fields. The price of this datalogger is between the top of the range DAT WideLog and the cheaper JET DSP 100, JET SDP and JET 4000 AME”. ■ Amedeo Valoroso, CEO of DAT instruments
screen, which lets display, in a detailed way, a huge quantity of graphics, numerical values and gauges and everything is needed by the operator in order to drill or inject in the most precise way. Obviously, this is a touch screen deployed for field, so very resistant and which can be used even wearing gloves. At the same time, the high definition monitor lets see many data at the same time: gauges and graphics with max, min and average values together with pre-established value”. The new DAT TinyLog has a solid state internal memory which can record many data and it is stronger to avoid any damage. This datalogger is made of stainless steel and aluminium in order to be as much resistant as possible. In addition to that, DAT TinyLog can work even brackish weather, extremely high or low temperatures, sand, water and in the most different climate and working conditions. DAT TinyLog is also waterproof, thanks to appropriate seals and IP68 connectors. The system can be also remotely programmed and can be supported through remote-assistance / e-care by DAT instruments Technicians for set up, maintenance or creation of new customized functions. Data can be downloaded via USB pen-
DAT instruments datalogger, DAT TinyLog and DAT WideLog for drilling sector
DAT TinyLog by DAT instruments
ITALIAN ABSTRACT
IL NUOVO DAT TINYLOG Un’evoluzione del progetto datalogger con cui è possibile collegare qualsiasi tipo di sensore. Questo nuovo registratore di dati è assolutamente versatile e può essere utilizzato in qualsiasi settore della perforazione. DAT TinyLog è il nome del nuovo datalogger di DAT instruments. È alta tecnologia in una larghezza di 35 cm, altezza 25 cm e spessore inferiore a 6 cm. Il suo monitor è touchscreen a colori da 12”. Nato dalla gamma DAT WideLog, questo nuovo strumento, come di consueto per gli strumenti DAT, nasce dalle esigenze del mercato e da esigenze specifiche dell’operatore. È un prodotto ad alte prestazioni, massima funzionalità e connettività insieme a dimensioni contenute. Il nuovo DAT TinyLog è un campione di versatilità. Poiché è possibile collegare qualsiasi tipo di sensore, questo nuovo registratore di dati può essere utilizzato in qualsiasi settore della perforazione: drilling, iniezioni cementizie, rilevamento geognostico, test DAC; jet grouting; grouting, TAM, GIN; iniezione di cemento a bassa pressione, grouting a compensazione; deep mixing, soil mixing, DSM; vibroflottazione, vibrocompattazione, compattazione del terreno; CFA; muti diaframma, idrofrese; test in acqua, test di Lugeon.
march 2020 - ONSITEUNDERGROUND 43
COMPONENTS Sireg Geotech
Italian manufacturers in the world, at the forefront of geotechnics Sireg Geotech is today a reference point in the global market for infrastructure and civil construction, providing several products for the geotechnical sector and among the most recent those in composite materials by Stefano Vitali
S
ince 1936 Sireg Geotech is an Italian reference in the global market of infrastructure and civil construction, specialized in Geotechnical, Civil Engineering and Water Treatment Plants for construction sites areas. The company manufactures a wide range of highly specialized products directly at the historic Arcore (MB) plant – the best known being, in simple words, pipes and profiles in thermoplastic material and bars in composite materials, i.e. fiberglass, carbon and aramid fiber – distributed in as many as 65 countries worldwide for ground reinforcement and consolidation in large Sireg Geotech produces ABS and PVC inclinometer casings in different diameters and thicknesses, used to drive the inclinometer probe into the soil
44 ONSITEUNDERGROUND - march 2020
SONJA BLANC
CHAIRMAN AND CEO SIREG
underground excavation works (subways, tunnels, dams) and the reinforcement of historic buildings or damaged civil constructions (buildings, bridges, schools , hospitals such as the Louvre, Pisa Tower, Campanile di San Marco) and for new buildings. Since 2009 the company has been led by Sonja Blanc, a link with the founding family being its third generation. The entrepreneur has embarked on a path of generational, managerial and strategic renewal that marked the turning point from tradition to innovation, in addition to opening up to non-European markets. The constant research activity started with plastic materials but above all composites allows Sireg to continue developing innovative products for ease of use, low environmental impact and quality standards. In fact, Siregworks together with large industrial groups, interna-
Sireg Geotech designs and manufactures temporary fiberglass reinforcements for concrete structures. Durglass reinforced structures can be easily bored by the TBM (technique known as “Soft-Eye”)
tional research bodies and universities to find challenging and increasingly sustainable solutions.
INNOVATION IN REINFORCEMENT BARS Compared to the two large families of materials by Sireg (plastics and composites, i.e. fiberglass, carbon fiber and aramid fiber), the main innovations include composites, in particular fiberglass bars for concrete reinforcement which can be used in replacement of steel and thanks to their intrinsic resistance to corrosion are able to last not only 50 years but more than 100. An example above all, the construction of bridges, where fiberglass will allow for a longer life span and less maintenance. One of these bars, made of a special resin, has been patented in collaboration with the University of Miami, Department of Engineering.
The company pays particular attention to process and product sustainability: unlike metals, the products developed by Sireg Geotech do not congest the subsoil and don’t obstacle following excavations. Being construction market also increasingly interested in the latest research on plastic and composite products andopening the post-metal era, the implications and opportunities for this market will grow exponentially.In the water sector, SiregHydros is a UN accredited supplier for economic and social development projects and a partner of important international cooperation projects. News for geotechnics ITS (Injection Tube System) is animportant project in the field of Siregresearch, the first tool to simumarch 2020 - ONSITEUNDERGROUND 45
COMPONENTS
Durvinil slotted and ribbed pipes for drainage or wells by Sireg Geotech Durglass glass fiber meshes and connectors can replace normal electro welded wire meshes wherever low weight, safe demolition, transparency to electromagnetic fields, high durability and certain flexibility of installation are required
late soil consolidation injections optimized in collaboration with the Bicocca University and designed to improve the performance of this consolidation technique right from the design phase, lim-
Waterstop joints for concrete casting
ITALIAN ABSTRACT
iting the use of traditional and costly on-site test fields. A new frontier for ground injections made possible by the collaboration between companies, research and design areas. Among the latest Sireg news, the Bio Biodegradable Plastic Hose patented to inject useful components to consolidate the soil without chloride or other harmful residues. This solution is being tested in a protected area of Southern Italy, does not release chloride and turns into sugar after 20 years. ■
PRODUTTORI ITALIANI NEL MONDO, ALL’AVANGUARDIA DELLA GEOTECNICA Sireg Geotech srl dal 1936 è una società italiana di riferimento nel mercato globale delle infrastrutture e delle costruzioni civili, specializzata nei settori Geotecnica, Ingegneria Civile e ImpiantiTrattamento Acqua per cantieri. Produce direttamente presso lo storico stabilimento di Arcore (MB) un’ampia gamma di prodotti altamente specializzati - i più noti, in parole semplici, sono i tubi e i profili in materiale termoplastico e le barre in materiale composito cioè vetroresina, carbonio e fibra aramidica - richiesti in ben 65 Paesi nel mondo per il rinforzo e il consolidamento del terreno nell’ambito della realizzazione di grandi opere di scavi sotterranei (metropolitane, gallerie, dighe) o per il rinforzo di edifici storici o costruzioni civili danneggiate (palazzi, ponti, scuole, ospedali fino al Louvre, Torre di Pisa, Campanile di San Marco) e per le nuove costruzioni. Novità importante nell’ambito della ricerca in Sireg, in corso di ottimizzazione in collaborazione con l’Università Bicocca, è l’ITS (Injection Tube System), il primo strumento per simulare in laboratorio le iniezioni di consolidamento dei terreni, studiato per migliorare le performance di questa tecnica di consolidamento, sin dalla fase di progetto,limitando il ricorso ai tradizionali e onerosi campi prova in sito. Una nuova frontiera per le iniezioni nel terreno resa possibile dall’unione tra mondo dell’impresa, della ricerca e della progettazione.
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Sireg Geotech manufactures Durvinil TAM grouting pipes used to perform injections of cement based mixes and resins in soil consolidation and waterproofing
COMPONENTS TRELLEBORG
The new TPMS system for construction tires Trelleborg Wheel Systems will be introducing its newest construction tire system to enhance productivity in critical applications and to make the operator’s life easier in the most demanding environments. The new Trelleborg TPMS system, engineered for construction applications, is a cloud-based system which integrates tire sensors, a central gateway on the machine and on-line platform to fully monitor your fleet operations and to guarantee machine uptime. Trelleborg Construction tires and wheels are engineered, produced and distributed for a wide range of equipment such as wheel loaders, telehandlers, aerial work platforms, scrapers and many more. For Surface & Underground Mining applications, Trelleborg offers a premium range of radial and solid tires for tunneling, under ground mining, open pit, quarry and surface mining. For undeground sector the tyres range it includes Earth Moving Radial Tires 1050, Brawler Mining tires, Custom Sizes. Lorenzo Ciferri, VP Marketing & Communication at Trelleborg Wheel Systems, says: “The construction industry is changing fast with increasing focus on
predictive maintenance, safety and machine performance to reduce vehicle downtime and increasing operational efficiency. Tires play a fundamental role in overall machine performance,
therefore, we want to offer our customers a game-changing solution to ensure that the aforementioned targets will be achieved, having all data under control through a full connection.”
COMPANIES Company
Page
Adriatech
3 Advertiser, 36
Bauer Blumaq
26 1 Advertiser
Brigade Electronics
40
Cifa
20
Comacchio
30
Dat instruments
42
Demac
5 Advertiser
Epiroc
12
Fai Filtri
47 Advertiser
BC India 2020 exhibition
25 Advertiser
Fraste Giorgio Novara
31 31 Advertiser
Herrenknecht
6
Hinowa
21
Italcementi
35
Liebherr
IV cover Advertiser, 28
Penetron Italia
32
Sandvik
16
SIP&T
III cover Advertiser, 39
Sireg Geotech
44
Soilmec
22
Trelleborg
47
Trimeccanica
21
Vermeer Italia
II cover Advertiser
48 ONSITEUNDERGROUND - march 2020