3D JOINT PERSISTENCE CALCULATION THROUGH RANDOM SIMULATION
三维结构面连通率的随机模拟计算

Based on statistics of randomly distributed joints in rock mass,the expectations and the associated degree of confidence of joint geometry can be obtained. Then,the three dimensional map of fissured rock mass can be simulated by Monte-Carlo method. Based on investigation on the failure surface property of many projects,3D joint persistence of rock mass is defined. By using the rock-bridge failure theory and three dimensional surface approximating method,the persistence can be easily calculated.