Analysis of Landslides and Slopes Stabilized Using Single Row of Piles

Abstract

Landslide and slope failure phenomenon is recurrent phenomenon in Nepalese Himalaya. The study area comprises the hill slopes along a road stretch of 155 m along Mirchaiya-Katari-Okhaldhunga-Salleri (F052) near Ch. 75+545 to 75+700 situated at right bank of Ghurmi Steel Truss Bridge, Udayapur. The main objective of the research work is to perform certain parametric analysis on general slope to find out optimum value of parameters affecting pile slope system and apply these results on actual pile slope simulation. The research started with field mapping, data collection, soil sample collection. The material properties have been determined from laboratory and verified by various literatures. The stability analysis was performed in 3D slope stability analysis provided in RS3 and verified by 3D slope stability provided in Plaxis 3D Foundation and various literatures. A general slope is used to perform parametric analysis by varying different factors that affect the stability of pile stabilized slopes. After finding optimum parameters the slope stability analysis of particular slope at Ghurmi is done. The factor of safety of slope before and after using piles is compared.