Research on Repair and Support Technology of Broken Surrounding Rock of Vein-crossing Roadway
The surrounding rock joints of the vein-crossing roadway in an iron mine are developed and broken,and there are many weak planes in the interlayer.The repeated deformation and failure of the vein-crossing roadway affect the safety production.It is necessary to explore a more suitable repair and support technology for the vein-crossing roadway in broken surrounding rock.By analyzing the failure principle of roadway support system,combined with the same type of engineering case,the roadway repair and support scheme of'surrounding rock modification+prestressed anchor net spray+short anchor cable+steel ladder+wall filling'is formulated.The internal support and surface support of the roadway are effectively com-bined to ensure the stability of the broken surrounding rock after the repair of the roadway.It has been veri-fied by practice that the repair and combined support scheme has a good effect on the optimization of the bro-ken surrounding rock crossing roadway,avoids the repeated damage of the roadway,and greatly reduces the repair cost and the safety hazard of the repair process.The research results can provide reference for the sup-port and repair design of similar broken surrounding rock cross-vein roadway.
roadway deformationbroken surrounding rocksurrounding rock modificationcom-bined support
万方数据
维普
