Experimental and numerical investigation on shale fracture behavior with different bedding properties

Research on crack evolution mechanism and fracture behavior of bedding shale is of great significance for shale gas exploitation. The mechanical properties of shale, especially the strong anisotropy, have great influence on the nucleation and propagation of hydraulic fractures. To investigate the mechanical properties of bedding shale, the micro fracture process of Longmaxi shale under three-point bending load was observed using scanning...