ISSN 2348-1218 (print) International Journal of Interdisciplinary Research and Innovations ISSN 2348-1226 (online) Vol. 10, Issue 1, pp: (47-52), Month: January - March 2022, Available at: www.researchpublish.com
STUDY ON LANDSLIDE DAMAGE IN KODAGU Mahesh Prabhu K.1, Narayana Suresh2, Vishwanath K.N.3 1.
Assistant Professor, Department of Civil Engineering, Government Engineering College, Ramanagara 562159
2. 3.
Professor & Director, Building Fire Research Centre, The National Institute of Engineering, Mysore 570008
Professor, Department of Civil Engineering, Dayananda Sagar Academy of Technology & Management, Bengaluru 570008
Abstract: Natural hazards are repeated in Madikeri since 2018 that take place during monsoon and damage crops, livestock and settlements. Data on flood, drought, cyclone and waterlogging were collected. Heavy rainfall not only cause floods and debris flows, but also trigger off landslides on steep slopes. The danger due to these slope instabilities is considerably high, as they often evolve into debris flow that may damage cultivated land, buildings and infrastructures, and even cause fatalities. This paper discusses certain technical aspects of the landslides at various locations of kodagu district that triggered off by heavy rainfall in the season of July - August 2018. This article concentrates on the documentation and analysis of rainfall events, with a focus on evaluating the effects of urbanization on landslides. It summarizes the results of one landslide inventories after severe rainstorms in Kodagu during the previous month (August 2018), concentrating on the observations during field surveys and similarities between forest and open land. Keywords: flood, drought, cyclone, heavy rainfall, landslides.
1. INTRODUCTION Landslides at different locations of kodagu district that triggered off by heavy rainfall with around 40 days of continues precipitation during the months of July and August 2018. On 17th August 2018, several landslides of different dimensions occurred at Kodagu district (Southern Indian –Western ghats) after a long rainy period. Landsliding is the most important geomorphic process in humid mountains; it can also be the most dangerous. The term “Landslide”, may be referenced to a sliding motion, for all varieties of mass-transport deposits (MTD), which include slides, slumps, debrites, topples, creeps, debris avalanches etc. Slides represent the pre-transport disposition of strata and their reservoir quality (ie. porosity and permeability) of the provenance region, whereas debrites reflect post-transport depositional texture and reservoir quality. These Landslides problems have enormous implications for studies in sedimentology, engineering geology, oceanography, geomorphology, volcanology, seismology, glaciology, areology (i.e., geology of Mars), deep-sea structural engineering, highway engineering, soil mechanics, climate change, natural hazards, petroleum exploration and production. Since the early recognition of “landslides” in 186 BC in China (Li, 1989), their common occurrences in subaerial and submarine environments have been well documented worldwide. The data on worldwide damages caused by large subaerial MTD in the 20th and 21st centuries is presented in Table 1.
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