Geomechanical characteristics and failure analysis of the limestone slope at Sahastradhara–Chamasari road Dehradun Uttarakhand India

摘要

In this study, the rock slope failure analysis was carried out to predict the stability of the limestone rock in the Sahastradhara-Chamasari Road Dehradun Uttarakhand, India. The limestone rock specimen was collected from the study area for testingpurposes. The geomechanical parameters like compressive strength, axial strain, young’s modulus, cohesion, and angle ofinternal friction were experimentally determined to study their application in the simulation of slope failure analysis. A 2Dmodel of the study area was developed using the field data for modeling and simulation purposes. Slope failure analysis wascarried out using the Finite element method. The compressive strength, axial strain and elastic modulus were determinedusing standard procedure. The cohesion and the angle of internal friction of the core specimen were evaluated using triaxialstrength experimentation. The slope failure analysis was carried out to determine the factor of safety (FOS) of the slope atvariable loading conditions. Plane failure was observed in the analysis. A decreasing trend of the FOS was observed withloading. The lesser value of FOS at higher loading conditions required the supporting system at the foot level of the slopefor the slope stability in the study area.