Abstract: Based on the actual practice of the thick coal seam mined at footwall of reverse fault (60~265 meters) in Yunhe coal mine，the effect of the large-fault footwall mining on hanging wall coal seam was simulated with similar material.The results show that the pressure increases nearby F₁₀ fault and the stress distribution changes obviously after the footwall coal seam was mined.The pressure at footwall is much greater than that on hanging wall and stress concentration appears nearby the fault.The working face has less impact on the deformation and stress distribution of hanging wall coal seam，so the coal property keeps constantly and it has little influence on the hanging wall coal seam.Furthermore，the area near DF₁₄ where is far away from the mining area is also influenced slightly.

Key words: Large fault, Footwall mining, Mining effect, Similar material simulation