Aplikasi Uji Kuat Geser Dalam Remediasi Lereng Tambang Aspal Di PT Karunia Alam Indonesia Kec. Lasalimu Kab. Buton, Provinsi Sulawesi Tenggara

Application of Shear Strength Test in Remediation of Asphalt Mining Slope of Pumal at PT Kurnia Alam Indonesia, Lasalimu Subdistrict, Buton Regency, Southeast Sulawesi Province

Abstract

Mining activities iscommonlyto work with the problem of deformation or rock movement, this is causing
the shift of rock mass and generated in the occurrence of landslides activity. Slope Stability Analysis
required that the slope in stable condition. Therefore, stable bench is needed to prevent failure bench
that bring about interference either tool traffic or loading material during production process. Testing of
UCS value is done on 6 lithology that is on asphalt lithology, mudstone, siltstone, sandstone and
claystone. Based on the results of laboratory testing show that value of cohesion and friction angle to
generate by using Generalized Hoek Brown Failure Criterion method.The values of cohesion and
friction angle in asphalt are 0.080712 MPa and 26.3176 º. Asphalt Rock Mass Strength Value is
0.145453 MPa. The values of cohesion and friction angle in mudstone are 0.075424 MPa and
17.4773º. Rock Mass Value The mudstone rock is 0.220617 MPa. The values of cohesion and friction
angle in siltstone are 0,105107 MPa and 28,2864º. Rock Mass Strength siltstone rock is 0.311426
MPa. The values of cohesion and friction angle in the sandstone are 0.180389 MPa And 38.9621º.
Rock mass strength sandstone rock is 0.739092 MPa. The values of cohesion and friction angle in
siltstone are 0.180389 MPa And 38.9621º. The Power of Mass The siltstone rock is 0.739092
MPa.The values of cohesion and friction angle in mudstone are 0.180389 MPa And 38.9621º. Rock
Mass Strength value The mudstone rock is 0.739092 MPa. Given that in Geological Strength Index
method only qualitative data will be more accurate using RMR method so it can get quantitative data.