Problem: To assess the stability of a slope in siltstone (the height is 40 m), you are required to estimate the shear strength of the rock mass. The following information was obtained from site investigations: the rock density is about 2.5 g/cm3, JRC of joints is in the range of 12-14, Schmidt hammer tests on the rock joint surfaces resulted in UCS= 35 MPa. What will be the shear stress acting on rock at a depth of 20 m? Estimate the rock mass cohesion and friction angle (wet conditions due to rainfall) using the Mohr-Coulomb failure criterion.
Related videos:
Tutorial 1: How to Estimate Rock Mass Strength in Tunnel using RocData | Step by Step Procedure https://youtu.be/dbswu_RMNUU
Tutorial 2: How to Estimate Slope Rock Mass Strength Using RocData | Step by Step Procedure https://youtu.be/pl_eT7byNAY
