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 testing purposes. The geomechanical parameters like compressive strength, axial strain, young's modulus, cohesion, and angle of internal friction were experimentally determined to study their application in the simulation of slope failure analysis. A 2D model of the study area was developed using the field data for modeling and simulation purposes. Slope failure analysis was carried out using the Finite element method. The compressive strength, axial strain and elastic modulus were determined using standard procedure. The cohesion and the angle of internal friction of the core specimen were evaluated using triaxial strength experimentation. The slope failure analysis was carried out to determine the factor of safety (FOS) of the slope at variable loading conditions. Plane failure was observed in the analysis. A decreasing trend of the FOS was observed with loading. The lesser value of FOS at higher loading conditions required the supporting system at the foot level of the slope for the slope stability in the study area.