43M5工作面过空巷超前加固技术

王庄矿43M5工作面根据原空巷的支护情况,分别采用补打锚杆、锚索,打设木垛,注超高水材料的方式,回采前先对空巷进行加固,有效控制了顶板及巷道两帮；工作面回采过程中,空巷受采动影响较小,无明显顶、帮变形现象,加固效果明显；而且简化了回采过空巷工艺,降低了过空巷的成本,加快了工作面的推进速度.

Advanced Reinforcement Technology in Passing Abandoned Roadways on 43M5 Working Face

To guarantee that 43M5 working face caving can pass abandoned roadway safely and quickly,the roadway should be reinforced before caving.Based on the original supporting situation,bolts,cables,timber crib,highly-water-absorbing material injection were used respectively to control the roof and two-side walls effectively.During the caving process,the driving influence was limited.There was no obvious deformation on roof and walls which showed that the reinforcement was effective.In addition,we simplified the passing empty roadway technology,reduced the cost,and speeded up the process.