Slope Stability Studies in Opencast Baryte Mine - a Case Study

摘要

A geotechnical study was conducted to estimate the safe slope of high wall benches at an opencast baryte mine. Rock samples of mine benches were collected and tests were conducted to determine the geotechnical properties in laboratories. On the basis of field and laboratory studies, Rock Mass Rating (RMR) of high wall benches was determined and accordingly rock classification was carried out from stability point of view. Thereafter, slope stability analysis was also carried out using the 'GALENA' software. Factor of safety for white shale and black shale of hanging-wall were determined separately and it was found that some modifications in the geometry of white shale benches are required to ensure safe working. In the foot - wall side strong dolomite rock existed and the existing geometry during the study was safe.