正利煤业14^(-1)1105孤岛工作面围岩控制技术研究与应用

Research and Application of Surrounding Rock Control Technology in the 14^(-1)1105 Island Working Face of Zhengli Coal Mine

为保障14^(-1)1105孤岛工作面回采巷道围岩的稳定,结合孤岛工作面的地质条件,确定巷道采用多圈层支护技术,设计巷道顶板采用螺纹钢锚杆+柔性锚杆+锚索进行不同深度岩层的支护,设计巷帮采用螺纹钢锚杆支护,并对各项支护参数进行设计。巷道掘进期间的围岩变形量监测结果表明:支护方案实施后,掘进期间围岩变形量小,有效保障了巷道围岩的稳定。

In order to ensure the stability of surrounding rock of the mining roadway in the isolated island working face 14^(-1)1105,combined with the geological conditions of the isolated working face,it is determined that the roadway adopts multi ring layer support technology.The roof of the roadway is supported by screw steel bolt+flexible bolt+anchor cable for different depth rock strata,and the bolt support of the roadway is designed with screw steel bolt,and the supporting parameters are designed.The monitoring results of surrounding rock deformation during the tunnel excavation show that after the implementation of the support scheme,the deformation of surrounding rock is small during the excavation,which effectively ensures the stability of the surrounding rock of the roadway.