深部巷道围岩变形控制技术在岳城煤矿的应用

Application of Surrounding Rock Deformation Control Technology of Deep Roadway in Yuecheng Coal Mine

为解决岳城煤矿深部复用巷道围岩变形大、补强支护效果差等现状,对巷道变形原因进行了深入分析,针对性地提出了深部条件下巷道支护设计方案,并采用十字监测法进行了现场验证。结果表明:应用该方案后顶底板围岩相对收敛量为409 mm,两帮围岩的相对收敛量为462 mm,但依旧处于持续平缓变形中,应进一步加强后期对围岩变形的观测。

In order to solve the current situation of large surrounding rock deformation and poor reinforcement and support effect of deep reuse roadway in Yuecheng Coal Mine,the causes of roadway deformation are deeply analyzed,the roadway support design under deep conditions is proposed,and the cross monitoring method is used for field verification.The results show that the relative convergence of the surrounding rock of the roof and floor is 409 mm and the relative convergence of the surrounding rock of the two sides is 462 mm after the application of this scheme,but it is still in continuous and gentle deformation.The observation of surrounding rock deformation in the later stage should be further strengthened.