摘要
针对余吾煤业高应力软岩巷道支护困难的现状,提出采用高预应力强力锚杆支护系统。介绍支护设计原则,设计支护方案,并在3号横贯进行了工业性试验。试验结果表明:采用该联合方案,有效地控制了巷道围岩变形,提高了围岩稳定性。
According to the difficulty of roadway supporting under high stress and soft rock roof at Yuwu coal industry,the system of high prestress strength bolt supporting is proposed.The principle of supporting design and design scheme are introduced,the industrial test is carried out in the 3# traverse.The results show that using the combination regimen,the deformation of surrounding rock is controlled effectively,the stability of surrounding rock is also improved.
出处
《煤》
2012年第1期14-16,21,共4页
Coal
关键词
强力锚杆
高预应力
软岩顶板
矿压监测
strength bolt
high prestress
soft rock roof
ground pressure monitoring
