不稳定围岩综采工作面托底过中间联络巷技术

Technology of floor supporting and passing through middle connecting roadway in fully-mechanized working face with unstable surrounding rock

针对新安煤矿1201工作面顶底板为不稳定的泥岩岩性,斜交工作面的中间联络巷压力大,巷道情况复杂的情况,施工中采取托底过巷法,提前对联络巷影响范围加强支护,工作面托底板1.5~2.0 m时推过中间联络巷,并对施工工艺等进行优化组织,实现安全可靠作业,达到了预期效果。

In view of the unstable mudstone lithology on the roof and floor of the 1201 working face,the pressure of the intermediate contact roadway in the oblique working face is large,and the condition of the roadway is complex,the method of supporting floor and passing the roadway was adopted in the construction,and the influence scope of the contact roadway was strengthened in advance.It was proposed that the supporting floor of the working face 1.5~2.0 m,it passed through the intermediate contact roadway,and the construction technology was optimized,which has achieved safe and reliable operation,the expected results were also obtained.