山体下特厚软岩巷道变形机理及其控制技术

Study on deformation mechanism and control for roadways with extra thick soft rock under mountains

根据巷道围岩稳定性影响因素,针对小发路煤矿山体下回采巷道,对5103运输巷围岩进行钻孔窥视和表面位移观测,总结围岩变形破坏规律.根据C5煤层巷道围岩稳定控制机理,提出围岩控制技术体系.现场试验表明:该体系能有效控制山体下软岩巷道围岩的稳定性,具有良好的技术经济效益.

Considering the mining gateway of Xiaofalu coal mine under the mountain and based on the key factors affecting the stability of surrounding rock, this paper used the borehole observation and surface displacement observation to research on transport tunnel 5103, and summarized the deformational and destructive law of surrounding rock. According to the surrounding rock stability control mechanism, the surrounding rock control technology system was put forward. Field testing shows that the system can efficiently control the surrounding rock stability of soft rock roadway under the mountain,which provides good technological and economical benefit.