大淑村矿东翼大巷变形机理与治理措施研究

The Rock Deformation and Failure Mechanism and Control for Dashu Village Mine

针对大淑村矿东翼大巷变形破坏严重的问题,通过围岩性质测试和钻孔监测分析,表明巷道围岩属遇水膨胀软岩,强度较低,围岩内生裂隙和构造裂隙发育情况比较严重,松动范围比较大。在此基础上,研究了大巷变形破坏机理,提出了无保护性煤柱、组合支护巷道、预加固技术稳定破碎顶板等治理措施。工程实践表明,巷道变形在允许范围之内。

According to the serious problem of deformation and destroy of the east wing mining roadway,the experimental research and rock drilling monitoring analysis on the nature of surrounding rock shows that the roadway surrounding rock will expand when meeting with water,the rock intensity is low,the surrounding rock fracture and structural fissure development situation is very serious and the loose range is wide.Based on the test,the deformation mechanism is researched and some control measures are put forward and the practice shows that the roadway deformation is in the permitted range.