破碎围岩巷道联合加固技术

Combined Reinforced Technology of Mine Roadway in Broken Surrounding Rock

采用现场调查与测试、井下试验相结合的方法,对寺河煤矿复合应力影响下的破碎围岩巷道——西轨大巷进行调查和评估;结合现场剧烈底鼓、两帮严重收敛、顶煤破碎等变形特征,确定该巷道采用高压注浆、锚索补强支护的联合加固修复方案。方案实施后,有效地控制了巷道变形,实现了巷道长期稳定,为类似条件下的破碎围岩巷道加固提供了经验。

With a site investigation and measurement and underground test combined method,an investigation and evaluation were conducted on the west rail roadway of the broken surrounding rock roadway in Sihe Mine under the influences of the complex stress.Combined with the site serious floor heave,serious convergence between the two sidewalls,broken top coal and other deformation features,a reinforced and repair plan combined with the high pressure grouting and anchor enhanced support was determined for the mine roadway.After the plan completed,the roadway deformation was controlled efficiently and a long stability of the mine roadway was realized,which could provide the experiences to the reinforcement of the mine roadway with the broken surrounding rock under the similar condition.