光滑節理模型在錦屏大理岩中的應用研究

The traditional method of estimation of jointed rock mass strength, such as the RMR classification, GSI classification, etc., is extrapolated to assess the degree of rock crushing and calculated with the strength of the intact rock. The use of particle discrete element method, using the software PFC to construct BPM model could have a good simulation of mechanical properties of intact rock. On this basis, the jointed rock mass could be used to smooth joint model (SJM) to simulate. The idea of the smooth joint modelwas to change the way of the motion of particles between joints, so that it no longer meets the role of Newton’s Second Law, but the direction of sliding along the joints. Relative to decrease the bond strength of particles between joints, this definition was consistent with action of joints, the more directly reflect the joints exist on the rock mechanical properties.