International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023
p-ISSN: 2395-0072
www.irjet.net
Analysing the role of Cable Anchor in Hydroelectric project A case study Abhishek Siwach¹, Monu Rajpoot² ¹ M.Tech Transportation Engineering, IIMT University Meerut (U.P.) ² Assistant Professor, Civil Department, IIMT University Meerut (U.P.) ------------------------------------------------------------------------***-----------------------------------------------------------------------Abstract: Purpose of this Scope Cable anchors are tensioned reinforcing elements of higher capacity, consisting of high
strength steel tanden fitted with stressing anchorage (fixed length) at inner end, a means permitting force to be transferred, and a head on the rock/Hill surface at the external end. The cable anchors are used for stabilization of steep slopes or slopes consisting of softer soils as well as the enhancement of embankments or to prevent excessive erosion and landslides protection against slope stability failures. The cable anchor is an advanced reinforcement device used in the integration of passive systems to withstand higher loads. Anchors transfer the tensile stress to the soil to absorb stresses due to effective stress loss. In geotechnical engineering, this is called "pre-tensioned post-tensioned grouted soil anchors". Ground anchors can be made from high quality steel rods using wire or cable anchors. The total length of the rod/wire strip is divided into free length and fixed length. The forces are transmitted to the ground through the bond length/fixed length. The depth of the anchor can be varied to achieve end retention and the desired coefficient of friction to withstand the tensile stress. High performance drilling rigs are used for accurate and stable drilling in dry and wet conditions. Anchors are classified based on the injection technique, the injection method is crucial because it determines the strength of the anchor in the soil and its performance. It is determined by geotechnical engineering survey. This project involves slope stabilization using a anchor system , Before anchoring work at location , significant soil conditions in the area must be established. The construction and design work of anchoring and grouting is explained as clearly as possible in this project, as well as the difficulties associated with their work..
Keywords: Cable anchor, landslides, tensioned, drilling rigs , Technical specification , Chainage , geotechnical engineering.
I-Introduction. The stability of slopes and rock surfaces is usually lost due to natural phenomena such as water intrusion, freezing and thawing or erosion. However, in certain cases the stability of slopes is affected by changes in land slopes or loading conditions caused by human activities. Therefore, the slopes have an imbalance due to natural causes and human activities. Mainly, slope imbalances are related to road construction, large buildings or extensions of existing systems. The large structure located in the Himalayan landscape involves the construction of hydropower projects to utilize the existing potential to meet the high electricity needs of the country. Projects for sites with difficult geology are underway or will be built in the near future, as most of the easier sites have been built. Hence stabilization. building slopes to build new hydro projects in the Himalayas is a challenge for engineers. The hilly terrain in Himalayan Region falls in the category of youngest mountains and needs protection measures, most of the time, whenever some construction is performed for the desired cut in the slopes. These young mountains having fragile geology are still on the verge of their formation and are not stable as compared with southern mountains of India. The construction activities in hilly terrain mostly require cutting or filling in the slopes for the construction of building, road or any other civil structure. After any cutting or filling, slopes shall be examined for stability and protection measures, if necessary, are implemented. The excavated slopes are frequently of considerable extent and in certain circumstances can even affect the stability of adjacent zones and particularly slopes and rock faces situated above them.
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