摘要
西山煤电集团马兰矿施工的南八轨道运输大巷服务于南八采区,由于所处巷道顶板松软围岩破碎,顶板压力显现、离层变形严重,给施工带来了很多困难,针对上述情况,马兰矿采用过空巷段锚网喷+锚索+钢拱架联合支护的加固方案,较好地控制了巷道围岩的变形,解决了顶板破碎、巷道压力大给贯通施工带来的困难,取得了良好的支护效果,确保了施工安全,并保证了以后的使用,为矿井以后类似条件下近间距交叉巷道的施工提供了宝贵的经验。
Due to the crushing of the soft surrounding rock and the roof itself,the construction of the South 8th Rail Roadway for underground transportation faces many difficulties. In view of the above situation,the consolidation for the roadway in Malan coalmine is carried out by the combination of bolt net and spraying plus anchor cable plus the steel-made arch. The deformation of the surrounding rock is well controlled,and the problem caused by crushing roof and tunnel pressure have been largely resolved,good supporting effect achieved,the construction safety guaranteed,which also provides valuable experience for the construction of similar cases.
出处
《山西焦煤科技》
2017年第7期43-45,共3页
Shanxi Coking Coal Science & Technology
关键词
立交
过空巷
加固支护
Interchange
Crossing goal
Reinforcement support
