对于缓斜及倾斜厚煤层,目前我国主要采用倾斜分层采煤法。各分层的开采顺序有下行式和上行式两种。下行式一般采用金部垮落法处理采空区,上行式大多采用充填法处理采空区。下行垮落回采下分层是在再生顶板下进行的。由于对再生预板的力学性质尚未完全掌握,所以下 For gently inclined and inclined thick seam, at present our country mainly adopts inclined stratified mining method. The stratification of the mining order down and up two kinds. Down the line generally used by the Ministry of the collapse of the law to deal with the gob area, most of the upside filling method used to deal with the goaf. Downward collapse of the mining under the roof is carried out under the regeneration. Because of the mechanical properties of the regeneration of pre-board has not yet fully grasp, so under