泥岩复合底抽巷变形围岩控制的优化设计

Optimization of the Control Design for the Deformed Rock of Mudstone Composite Bottom Drainage Lane

针对岳城煤矿底抽巷支护结构失效、顶板离层严重等问题,对失效原因进行了深入分析,提出了针对泥岩复合顶板条件的锚网索喷的支护方案,并进行现场验证。现场结果表明:采用优化支护方案后顶底板、两帮围岩变形情况明显降低并趋于稳定,说明优化后的支护方案能够明显提高对围岩变形的控制能力。

Aiming at the problems of failure of supporting structure and serious roof separation in Yuecheng Coal Mine,the causes of failure are deeply analyzed,and the supporting scheme of anchor mesh cable shotcrete for mudstone composite roof condition is put forward,and the field verification is carried out.The field results show that the deformation of the top and bottom rock and the two sides of the surrounding rock decreases obviously and tends to be stable after adopting the optimized support scheme,which indicates that the optimized support scheme can obviously improve the control ability of the surrounding rock deformation.