大倾角煤巷锚索网支护技术在庇山矿的应用

The Application of the Combined Support with Bolt-net-cable in the Coal Lane with Large Dip Angle in Bishan Mine

庇山矿回采巷道垂深820~980m,巷道压力大、煤层倾角大,原有架棚支护巷道变形严重。通过探索采用锚索网支护技术,巷道变形得到有效控制,解决了大倾角煤巷顶板回采巷道支护难题。矿压观测结果显示:巷道围岩变形在巷道使用允许范围内,满足安全生产需要,取得良好效果。

The return airway of Bishan Coal Mine, with the vertical 820~ 980 m depth, high pressure, the coal seam roadway of large dip Angle, and the severe deformation of the original JiaPeng roadway support, has adopted a new supporting technology, the combined support with bolt-net-cable, which effectively controlled the deformation of roadway, and solved the support problem in the return airway of coal lane with large dip Angle. The results of mine pressure observation show that the roadway surrounding rock deformation can be used within the allowable range of roadways to meet the needs of safe production and achieve good results.