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针对魏家地煤矿1070巷道返修工程,分析了巷道围岩破坏机理,制定了巷道返修支护方案,给出了巷道变形和应力现场监测方案,得出了煤矿高应力软岩巷道的破坏规律。研究结果表明,高应力软岩巷道工程围岩自身特征决定了巷道具有变形大的特点,巷道所在的深度不仅对围岩变形或稳定状态有明显的影响,而且影响程度很大。
Aiming at the rework project of 1070 roadway in Weijia coal mine, the failure mechanism of roadway surrounding rock is analyzed, and the roadway repair and support plan is formulated. The roadway deformation and stress field monitoring program is given. The failure law of high stress and soft rock roadway is obtained. The results show that the surrounding rock of high-stress soft-rock roadway project itself has the characteristics of large deformation, the depth of the roadway not only has a significant impact on the deformation or steady state of surrounding rock, but also has a great impact.