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总结了某矿砌碹巷道变形破坏特征,数值模拟分析了砌碹巷道破坏机理,认为改善“支护-围岩”关系,使支护体和围岩形成有效承载体是保持砌碹巷道整体稳定的关键,据此提出了碹体壁后注浆充填的补强支护方案,并结合现场实际确定了采用高水充填材料注浆充填时合理的注浆管布置、注浆压力等参数,最终在工程实践中取得了良好的支护效果。
The deformation and failure characteristics of mine roadway are summed up. The failure mechanism of roadway is analyzed by numerical simulation. It is considered that the relationship between “support and surrounding rock” is improved and the effective bearing body of support body and surrounding rock is to keep the roadway The key to the stability of the whole body is put forward. According to the above, the reinforcement support scheme of the post-mortar wall grouting filling is put forward, and the reasonable grouting pipe layout, grouting pressure and other parameters , And finally achieved good supporting effect in engineering practice.