Research on Deformation Laws of Uncovering Coal in Inclined Shaft Based on FLAC^3D

In order to study on the force condition of the working face and the surrounding rock in the process of excavation for uncovering coal working face in the inclined shaft of a coal mine, it used the numerical simulation software FLAC^3D to establish the mechanical model of uncovering coal working face in the inclined shaft, then analyzed the working face trend, the stress change of surrounding rock and coal seam displacement in the direction of cross section. The results showed that there was stress concentration area in excavation face, the stress concentration area developed from the heading face to coal seam floor, the deep stress moving area developed close to the coal seam area, the center of roadway floor was easy to be destroyed.