The shear strength of rock joints in theory and practice

The paper describes an empirical law of friction for rock joints which can be used both for extrapolating and predicting shear strength data. The equation is based on three index parameters; the joint roughness coefficientJRC, the joint wall compressive strengthJCS, and the residual friction angleφ null null null null null null null null null null null null null null null null null null null r null null null null null null null null null null...