Experimental Study of the Self-Potential Response Characteristics of Anisotropic Bituminous Coal during Deformation and Fracturing

The deformation and fracturing of coal rock is a crucial part dynamic disasters accompanied by variations in the electrical field rock. In this study, self-potential characteristics were measured to dynamically monitor spatiotemporal evolution fracturing. By using an MTS816 mechanics test system, AE acoustic emission system self-developed SEMOS-LAB experimental synchronous measurements self-potential, stress anisotropic bituminous under uniaxial compression obtained. exhibited good correspondence with counts during damage As gradually increased, bedding-perpendicular samples stronger linear relationship initial loading than bedding-parallel samples. amplitude higher those Anisotropy important factor that affects variation mass loading. results study can be applied evaluate state measuring its loading-induced potential; thus, work for monitoring warning disasters.