Geotechnical study and optimum pit slope design of the Ashok Coal opencast project

Abstract

The paper deals with the geotechnical study and optimum ultimate pit slope design of Ashok opencast project with special reference to the highwall stability of slope created by surface miner. It was also aimed to know the influence of slope design parameters on the safety factor by sensitivity analysis. Geotechnical mapping was done on the exposed benches of the surface mine as per the norms of International Society of Rock Mechanics. The different geo-mechanical properties of lithological units were determined. The failure analysis was done by GALENA software based on limit equilibrium method and optimum slope design was recommended