Simulation of energy evolution during deformation failure process of the layer-intact structure

To research the failure mechanism of layer-crack structure surrounding rock in deep mine roadway, combination (Layer-Intact structure) shallow coal and complete was taken as object, mechanical behavior energy evolution law Layer-Intact under uniaxial biaxial compression were studied by numerical simulation with particle flow code (PFC 2D ). The results show that: (1) In structure, specimen is destroyed prior to intact specimen; degree fragmentation increases increase confining stress, decreases fissure number; (2) stress number have a significant impact on basic parameters structure. peak first then (3) When constant, ratio (strain stored whole specimen) while increases. number, storage capacity reduced, decreases, can provide some reference for revealing release dynamic instability