Abstract:In this paper, the data of exploration boreholes in a bauxite mining area covered by coal measure strata in Shanxi were analyzed.Thespecific values of mining thicknesses of bauxite and coal-aluminum strata were divided into6.9, 11.9 and 17.4. On this basis, a mining model of the underlying aluminum ore body was established, and the research and analysis on the law of overburden ground pressure in the process of under-coalbauxite mining with room and pillar method and applying caving and filling technology to treat goaf were conducted. The mining of bauxite can release the vertical stress in the overburden, and horizontal stress increased slightly. In the process of aluminum mining under coal, synchronous caving roof deal with the goaf can control the settlement of overlying strata and stress release of overlying coal seam, without resulting the mining of bauxite being in the failure of seam tension shear and exceeding. A specification for the surface protection level Ⅰ horizontal deformation and radial tilt. Based on the results of numerical analysis, the linear relationship between the horizontal deformation and inclination of coal seam floor and the inclined advance of stope were established, and found that the total number of mining stages along the trend should not exceed 11.