Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stability Analysis of Hill Slopes in The Nilgiris, Tamil Nadu
Landslide is a sudden slide of rock, debris and earth down the slope. The Nilgiris have always been under the threat of landslides in monsoon season. The Nilgiris is a hilly district with an area of 2500 km2 located in the North-Western part of Tamil Nadu. Rainfall is the major triggering factor of landslides in The Nilgiris (Chandrasekaran in Assessment of damages induced by recent landslides in Ooty, Tamil Nadu, India. IIT Bombay, Mumbai, India, pp 687–688, 2010). In this study, two sites have been selected where landslides occurred during monsoon in November 2009. The soil samples were collected from the sites of landslides. A detailed investigation was carried out on the soil samples and index properties; chemical composition and shear strength parameters were drawn. The critical surface for the slope was drawn graphically using Fellenius (1936) method, and the same was incorporated into the software through co-ordinates. Many studies have been carried out using numerical analysis for The Nilgiris area but in this study, realistic site conditions and parameters have been incorporated. The analysis was carried using wetting depths of 2 m, 3 m, 4 m and 5 m at the edge of the slopes and shear strength parameters in GEO 5 and PLAXIS 2D software. The analysis result shows that the infiltration of water into the slope results in the reduction of shear strength parameter of the soil which leads to the failure of the slope. The results of Geo 5 analysis and PLAXIS 2D analysis were compared, and the conclusions were drawn from it.
Stability Analysis of Hill Slopes in The Nilgiris, Tamil Nadu
Landslide is a sudden slide of rock, debris and earth down the slope. The Nilgiris have always been under the threat of landslides in monsoon season. The Nilgiris is a hilly district with an area of 2500 km2 located in the North-Western part of Tamil Nadu. Rainfall is the major triggering factor of landslides in The Nilgiris (Chandrasekaran in Assessment of damages induced by recent landslides in Ooty, Tamil Nadu, India. IIT Bombay, Mumbai, India, pp 687–688, 2010). In this study, two sites have been selected where landslides occurred during monsoon in November 2009. The soil samples were collected from the sites of landslides. A detailed investigation was carried out on the soil samples and index properties; chemical composition and shear strength parameters were drawn. The critical surface for the slope was drawn graphically using Fellenius (1936) method, and the same was incorporated into the software through co-ordinates. Many studies have been carried out using numerical analysis for The Nilgiris area but in this study, realistic site conditions and parameters have been incorporated. The analysis was carried using wetting depths of 2 m, 3 m, 4 m and 5 m at the edge of the slopes and shear strength parameters in GEO 5 and PLAXIS 2D software. The analysis result shows that the infiltration of water into the slope results in the reduction of shear strength parameter of the soil which leads to the failure of the slope. The results of Geo 5 analysis and PLAXIS 2D analysis were compared, and the conclusions were drawn from it.
Stability Analysis of Hill Slopes in The Nilgiris, Tamil Nadu
Lecture Notes in Civil Engineering
Latha Gali, Madhavi (Herausgeber:in) / Raghuveer Rao, P. (Herausgeber:in) / Kumar, Praveen (Autor:in) / Premalatha, Krishnamurthy (Autor:in)
14.08.2020
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Stability Analysis of Hill Slopes in The Nilgiris, Tamil Nadu
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