Abstract: Influenced by depositional environment of the coal, it causes the change of coal seam thickness, alternating generation of coal seam and rock strata, coal pinching out and merging and other phenomena. The occurrence condition of Xuzhou Mining Area is complicated, and part of coal seams are close seams or combined coal seams, which is about 22% of the total reserves. In the process of this kind of coal mining, coal seam thickness, hardness and thickness of dirt band and the hardness choice play a decisive factor for mining technology. Xuzhou Mining Group explores a variety of patterns for the coal seam mining, which has a certain theoretical basis and practical experience.