摘要
新矿集团汶南煤矿针对-650西大巷历经多次采动影响、多次修复仍变形较严重的实际情况,通过对西大巷变形原因认真分析,采取先锚后注,高强预应力锚杆及锚索联合支护,取得很好的效果。
The - 650 western tunnel in Wennan Coal Mine of Xinwen Mining Group is still faced with the problem of deformation with the influence of multiple mining activities, although it has been repaired for many times. After careful analysis on the reasons of deformation of the western tunnel, the measures such as casting after bolting, combined support with high- intensive prestressed bolt and cable anchor has been applied, which has resulted in satisfied effect.
出处
《煤炭技术》
CAS
2006年第5期95-97,共3页
Coal Technology
关键词
孤岛煤柱
围岩
治理
isolated coal column
surrounding rock
control
