摘要
为保障8106工作面回采巷道围岩的稳定,采用现场测试的方式进行围岩强度的分析,根据分析结果得出巷道顶板强度变化起伏较大,岩层厚度和岩性变化较大,巷帮整体强度较低;基于围岩强度测试结果,结合巷道特征确定支护原则,设计巷道顶板和两帮分别采用全锚索和锚杆+短锚索支护,巷道掘进期间进行矿压监测分析。结果表明:支护方案实施后,巷道掘进期间,锚杆索受力正常,围岩处于稳定状态。
In order to ensure the stability of the surrounding rock of the mining roadway in the 8106 working face,the strength of the surrounding rock was analyzed by on-site testing.According to the analysis results,the strength of the roadway roof varies greatly,and the rock thickness and lithology vary greatly,and the overall strength of the roadway.Low;based on the test results of the surrounding rock strength,combined with the characteristics of the roadway to determine the support principle,the roof and the two sides of the roadway are designed to be supported by full anchor cables and bolts+short anchor cables,and the mine pressure monitoring and analysis during the roadway excavation.The results show that after the implementation of the support plan,during the roadway excavation,the bolt cables are under normal force and the surrounding rock is in a stable state.
作者
刘振华
LIU Zhenhua(Tongfa Dongzhou Kiln Coal Industry Co.,LTD.,Jinneng Holding Coal Industry Group,Datong037100,China)
出处
《煤矿现代化》
2022年第3期18-21,共4页
Coal Mine Modernization
关键词
围岩强度
回采巷道
支护原则
矿压监测
strength of surrounding rock
mining roadway
support principle
mine pressure monitoring
