双动压影响破碎巷道围岩加固技术研究  

Surrounding Rock Reinforcement Technology of Cracked Roadway Influenced by Double Dynamic Pressure

作　　者：张镇[1,2] 

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

出　　处：《煤矿开采》2014年第4期77-80,共4页Coal Mining Technology

基　　金：国家科技支撑计划课题(2012BAB13B02);中国煤炭科工集团科技创新基金项目(2013QN011);天地科技开采设计事业部青年创新基金项目(KJ-2013-TDKC-17)

摘　　要：古书院矿94206巷经受临近工作面回采动压影响后围岩破碎、变形严重,无法继续正常使用,而该巷仍需服务于本工作面回采。针对这种情况,综合运用现场调查、围岩窥视和理论分析的方法,进行了巷道围岩变形机理分析,提出了巷道围岩控制措施。认为巷道变形是由围岩结构面发育、采动影响和原有支护强度较低等因素综合作用引起的,围岩变形控制的关键是抑制围岩的不连续变形,避免破碎围岩的进一步恶化、离层和错动,将围岩保持为一个整体,提高围岩的自承载能力。采用高预应力锚杆锚索联合支护系统进行了井下现场试验,结果表明,在加固维修和二次动压影响期间巷道变形量均处于可控范围。Influenced by mining dynamic pressure of adjacent face , Surrounding rock of 94206 roadway was broken and roadway de-formation was too large to be used continually in Gushuyuan Colliery .Comprehensively applying on-the-spot investigation , bore-hole peep and theoretical analysis method , surrounding rock deformation mechanism was analyzed and corresponding controlling measures was present.It was believed that roadway deformation was induced by integrated factors including structural planes , mining influence and lower supporting intensity .The key to controlling deformation was restricting discontinuous deformation of surrounding rock , avoi-ding further broken , separation and rupture , keeping surrounding rock as a whole and improving bearing ability of surrounding rock.Combined supporting system of anchored bolt and cable with high pre-stress was applied in roadway .Result showed that roadway deformation value was within controllable range at the period of reinforcement and secondary dynamic pressure influence .

关 键 词：双动压 破碎巷道 围岩加固 二次动压 

分 类 号：TD353.6[矿业工程—矿井建设]