摘要
探讨了锚网索+长环形支架(U型钢)的"双壳"加固二次支护方法,在陶二煤矿首采区回风上山进行了二次支护技术工业性试验,在巷道中共施工40组长环形支架进行试验。结果表明,首采区回风上山巷道两帮及顶底板变形量趋于平稳,巷道变形得到有效控制,达到预期支护效果。
The double supporting way with cable anchor and rectangular ring （U-shape steel） sup- ports was discussed, and applied to the first mining area of Taoer Coal Mine. 40 sets of rectangular ring supports were used in the center of roadway. The results showed that the roadway deformation tend to be stable and controlled effectively, achieving the desired supporting effect.
出处
《中国煤炭》
北大核心
2012年第5期62-65,共4页
China Coal
关键词
松软岩层
巷道支护
长环形支架
锚网支护
底板注浆
soft rock strata, roadway support, rectangular ring supports, anchor net support, floor grouting
