近几年来,我国倾斜长壁采煤法在不断发展,积累了不少经验.二道河子矿二水平八号煤层的采区,根据煤层的自然条件,采用了倾斜长壁(俯斜)综合机械化开采,取得了较好的经济效果.一、采区煤层自然条件:在采区内有4条较大的倾斜断层,其落差为6～45米;采区水文条件简单,以顶板砂岩裂隙水为主;煤层倾斜一般为13°～15°,最大时为17°;煤层厚度2.15米;煤层顶板以砂岩为主,回采后顶板冒落块度大,冲击地压较大,过去采用走 In recent years, the longwall coal mining method in our country has developed continuously and accumulated a lot of experience.The mining area of ​​No.8 seam of No.2 level of Erdaohezi Mine adopted the inclined longwall (inclined) according to the natural conditions of coal seam, Comprehensive mechanized mining, and achieved good economic results First, the coal mining natural conditions: mining area has four large inclined faults, the gap is 6 to 45 meters; mining hydrological conditions are simple to roof sandstone Fissure water is the main; coal seam tilt is generally 13 ° ~ 15 °, the maximum is 17 °; coal seam thickness 2.15 m; roof of coal seam is mainly sandstone, after the mining roof slagging block large impact pressure greater in the past go