大倾角煤层巷道变形机理与支护控制研究  

Study on Deformation Mechanism of Roadway in Steeply Inclined Coal Seam and Rock Bolt Suppoting

作　　者：王新杰[1,2] 卜万奎[1,3] 徐慧[3] 

机构地区：[1]菏泽市煤炭管理局,山东菏泽274015 [2]山东科技大学,山东青岛266590 [3]菏泽学院,山东菏泽274015

出　　处：《煤矿机械》2015年第6期83-86,共4页Coal Mine Machinery

基　　金：菏泽学院科研基金项目(XY14KJ01)

摘　　要：针对大倾角煤层巷道围岩难以控制的现状,结合菏泽某矿区的巷道地质资料,采用FLAC软件对大倾角煤层巷道围岩应力分布和变形破坏进行研究。结果表明:与近水平煤层巷道相比,大倾角煤层巷道开挖后巷道变形表现为非对称性;对大倾角煤层巷道应加强低帮中部、高帮煤岩交界处的支护强度和重视靠近低帮侧的顶底板支护。在此基础上,设计了巷道支护控制方案,有效地控制了大倾角煤层巷道的变形破坏问题。It is difficult to control the deformation of surrounding rock of roadway in steeply inclined coal seam for most mining area. Based on the general geological situation in a mining area in Heze City, the stress distribution, deformation and failure of surrounding rock of roadway in steeply inclined coal seam are simulated by the software FLAC in this paper. The result indicates that the deformation shows asymmetrical behavior in steeply inclined coal seam compared with symmetrical behavior in fiat seam. The position at the center of low side, the position at the coal rock junction in high side and the region near the low side in roadway floor should be reinforced with more rock bolt. On this basis, the scheme of rock bolt supporting is presented, which effectively controls the deformation and failure of surrounding rock of roadway in steeply inclined coal seam.

关 键 词：大倾角煤层 巷道围岩 变形破坏 锚杆支护 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]