摘要
平煤股份六矿-440m大巷位于应力集中区,多次修复均未收到较好的效果,此后,本工程修复尝试采用强力支护手段,在剥离失修巷道围岩松动圈后,利用双层锚网喷混凝土、注浆加固和束状砂浆组合锚索三重复合支护技术加固围岩,取得了很好的支护效果,提高了巷道服务年限。
The -440 tunnel in No. 6 Mine of Pingdingshan Tian＇an Coal Mining Co. Ltd. lies in the stress-concentrated region, and it did not receive good supporting effect after repeated restoration. Then, the powerful supporting means was adopted on this project： after stripping the surrounding rock loose circle of tunnel in poor repair, triple composite supporting technology of double-layer anchored net and sprayed concrete, grouting strengthening and fascicular mortar composite anchor cable were used to strengthen the surrounding rock, which has obtained better supporting effect, and improved the service life of the tunnel.
出处
《中国煤炭》
北大核心
2012年第11期55-57,70,共4页
China Coal
关键词
超大断面巷道
巷道支护
复合支护
注浆加固
双层锚网喷
large cross-section roadway, roadway support, composite support, groutingstrengthening, double-layer anchored net and sprayed concrete
