深井高应力马头门支护破坏机理及防治

Prevention and destroy mechanism of ingate support under conditions of deep mining and high stress

针对潘一东煤矿深部高应力作用下副井马头门维护困难的问题,进行了马头门破坏机理分析,并提出了防治对策。现场应用结果表明,利用注浆、锚索网等多种方式进行支护,提高马头门、井筒及巷道相接处的围岩强度,使马头门的变形破坏得到了明显遏制。后期的应力变形监测显示,各项治理措施取得了良好的效果。

According to maintenance difficulties of the ingate at auxiliary shaft under the action of deep high stress at Panyidong Colliery, we analyzed the failure mechanism on the ingate, and put forward the preventive measures. The local application results showed that the supports of grouting and anchor nets could strengthen Strength of the surrounding rock which combined the ingate, shaft and tunnel. Moreover, it could obviously hold back the deforma- tion of the ingate. Later stress deformation monitoring showed that various measures were taken to generate the good effects.