叠加应力影响下大巷加固技术研究  

Reinforcement Technology of Main Roadway with Superimposed Stress Influence

作　　者：李建忠[1] 王子越[2] 陈金宇[2] 任硕[2] 

机构地区：[1]煤炭科学研究总院北京开采研究院,北京100013 [2]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《煤矿开采》2016年第1期63-66,46,共5页Coal Mining Technology

基　　金：中国煤炭科工集团青年基金项目(2016QN008);天地科技创新基金项目(KJ-2015-TDKC-08)

摘　　要：针对寺河矿二号井15号煤层大巷受叠加应力影响导致巷道围岩变得极为破碎、变形量大的特点,在地质力学测试的基础上,结合巷道变形破坏情况对其破坏机理进行分析。通过UDEC数值模拟论证了注浆对破碎围岩的加固作用,最终确定对寺河二号矿15号煤层3条大巷两帮和底板采用先注浆后打锚索的注浆加固技术方案。矿压监测结果表明,该方案可有效地控制大巷变形,为类似条件下的破碎巷道加固技术提供了参考。Surrounding rock of main road in No. 15 coal seam of No. 2 shaft of Sihe coal mine had became extremely broken and large deformation as superimposed stress influence,surrounding rock broken mechanism was analyzed on the basis of in-situ stress test and roadway deformation and broken situation. Detailed numerical model with UDEC was conducted to demonstrated the grouting reinforcement effect on cracked surrounding rock,the grouting reinforcement method that first grouting then supporting with cable was applied to two sides and floor of three main roadway in No. 15 coal seam of No. 2 shaft of Sihe coal mine,the results of rock pressure monitoring showed that the deformation of main roadway could be controlled effectively,it provided reference for similar situation.

关 键 词：叠加应力 数值模拟 注浆加固 矿压监测 破碎巷道 

分 类 号：TD353[矿业工程—矿井建设]