THE NUMERICAL SIMULATION OF TENSILE FRACTURE PROCESSES FOR ROCK BRIDGE

 In order to study the tensile failure  of rock bridge, the finite element software FEPG is used to simulate the tensile failure process of rock bridge with different angles. Under the condition of uniaxial compression, the simulation results show that for two sets of parallel pre-cracks with  same crack angle and distance, but with different inclination of rock bridge, the extension level of pre-crack is different. The bigger the inclination angle of rock bridge, the easier the rock bridge goes to tensile fracture.