Combined Finite-Discrete Element Modelling of Dynamic Rock Fracture and Fragmentation during Mining Production Process by Blast

A combined finite-discrete element method (FDEM) is proposed to model the dynamic fracture, fragmentation, and resultant muck-piling process during mining production by blast in underground mine. The key component of method, that is, transition from continuum discontinuum through fracture introduced detail, which makes superior continuum-based finite discontinuum-based discrete method. FDEM calibrated modelling crater formation blast. has well modelled stress propagation fragmentation process. In addition, captured crushed zone, cracked radial long crack zone. After that, employed sublevel caving an Then process, as initiation fragmenting Finally, effects borehole spacing initial gas pressure are discussed. It concluded a value numerical approach study rock