【摘要】 盘江煤电集团公司下属新井公司3#煤层在回采过程中采用沿空留巷,留出的巷道顶板下沉量大,煤壁片帮、底鼓严重,给恢复工作带来一定的难度,采用锚索的悬吊理论,从而简单地解决了顶板下沉,底板鼓凸的问题,实现科学合理管理顶板。更多还原

【Abstract】 Road retained for next sublevel was adopted in the winning process of No.3 coal seam of Xinjing Company of Panjiang Coal and Electricity Group Corporation, however, great roof convergence, serious coal rib fall and floor heave occurred in this retained road, which bring a certain difficulty for the recovery of the road. The use of suspension theory of cable anchors can simply solve the problem of roof convergence and floor heave and thus realize scientific and rational roof control.更多还原