5202回采巷道过断层掘进方案及支护技术研究

Research on Driving and Supporting Technology for the 5202 Mining Roadway Through Fault

5202巷过断层前,进行了断层对巷道掘进影响机理分析,采用深孔爆破+综掘机掘进相结合的后退挑顶过正断层的方案,利用锚网索、注浆加固、架钢棚的加强支护方式维护巷道。顶板离层监测结果表明,支护能有效地减少断层区域顶板破坏。

Before the 5202 roadway crosses the fault,the mechanism of the influence of the fault on the roadway excavation is analyzed.The scheme of retreating and overhanging the normal fault is adopted,which combines deephole blasting with fully mechanized excavator excavation.The roadway is maintained by bolt-mesh cable,grouting reinforcement and steel shed reinforcement.Monitoring results of roof separation show that support can effectively reduce roof failure in fault area.