蹬空条件下巷道锚杆锚索联合支护的应用

Application of Drift Bolt and Anchor Cable Joint Supporting under Condition of Kicking Air

针对淮南矿业集团张集煤矿1214(3)上提工作面、1214(1)工作面巷道在采空区上部掘进受采动影响大,使用架U29钢直墙半圆拱支架成本高、工序复杂、巷道维修量大的特点,采用锚杆锚索联合支护技术,并结合顶板岩性局部变化的特性,有效地对蹬空掘进巷道周边围岩进行了加固,取得了较好的技术突破和经济效益。

Against 1214 （3） lift face, 1214 （1） face drift of Zhangji coal mine excavate upper district come under the influence of extraction in Huainan coal mining group company, to use of U 29 steel vertical wall semi - circular arch support which spend high cost, processes complex with characteristic repair a lot of capacity of drift, adopt techniques of bolt and anchor cable joint supporting, combined with the characteristic of roof lithology local changes, make effective reinforcement for kicking air district drift surrounding rock, achieved better technological breakthrough and economic benefits.