为得出急倾斜煤层顶板运动规律,针对长沟峪煤矿急倾斜煤层,应用ANSYS有限元软件进行开采数值模拟,得出-220~-300m急倾斜煤层开采后:(1)-220m煤层壁为压缩状态,煤层应力超过其单向压缩强度,煤层壁会一直垮落下去,一直向上延伸。(2)-220m煤层壁开采后,煤层壁就会垮落,当跨落到B区域,对-130m石门影响很小。当跨落到C区域,对-130m石门就有很大影响,这就导致很难对石门采取措维护施。急倾斜煤柱开采模拟对对开采具有一定的指导意义。 In order to obtain the law of roof movement in steeply inclined coal seam, aiming at the steep coal seam of Changgouyou coal mine, the numerical simulation of the mining with ANSYS finite element software shows that after the mining of the sharply inclined coal seam of -220 ~ -300m: (1) -220m is Compressed state, the coal layer stress exceeds its unidirectional compressive strength, the coal seam wall will continue to collapse, has been extended upward. (2) After -220m coal seam mining, the coal seam wall will collapse. When straddling the B area, it will have little impact on -130m Shihmen. When the straddling C area, -130m Shihmen have a great impact, which makes it difficult to take measures to safeguard Shihmen. Steeply inclined pillars mining simulation has some guiding significance to mining.