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袁庄煤矿IV2专用回风道自成巷以来严重的变形一直都没有停止过,几乎每年都要大修一次。为找到合理的修复方案,彻底抑制巷道的变形,对巷道严重变形的原因进行了综合分析。分析发现,围岩岩性软弱、次生地压高度集中、原支护理念存在误区、松动圈内围岩注浆效果没有得到应有的重视是造成巷道严重的变形的主要影响因素。文章的结论为巷道的修护方案设计提供了基础的依据和和合理的思路。
Yuanzhuang Coal Mine IV2 dedicated return air channel since the road has been a serious deformation has not stopped, almost every year overhaul. In order to find a reasonable repair plan, to completely restrain the deformation of the roadway and to make a comprehensive analysis of the causes of the serious deformation of the roadway. The analysis shows that the rock mass is weak and the secondary ground pressure is highly concentrated. The original support concept has some misunderstandings. The grouting effect of the surrounding rock in the loose ring has not been given due attention. It is the main factor that causes the serious deformation of the roadway. The conclusion of the article provides the basis and reasonable ideas for the design of roadway rehabilitation plan.