双动压影响破碎巷道围岩加固技术研究.pdfVIP

学兔兔 第19卷第4期 (总第119期) 煤 矿 开 采 Vo1．19No．4(Series No．119) 2014年8月 C0AL MINING TECHN0L0GY August 2014 双动压影响破碎巷道围岩加固技术研究 张 镇 (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) [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。 [关键词] 双动压；破碎巷道；围岩加固；二次动压 [中图分类号]TD353．6 [文献标识码]A [文章编号]1006—6225(2014)04—0077．04 Surrounding Rock Reinforcement Technology of Cracked Roadway Influenced by Double Dynamic Pressure ZHANG Zhen ， (1．Coal Mining＆Designing Department，Tiandi Science＆Technology Co．，Ltd．，Beijing 100013，China； 2．Coal Mining＆Designing Research Branch，China Coal Research Institute，Beijing 100013，China) Abstract：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 deform ation was induced by integrated factors including structural planes，mining influence and lower supposing intensity．The key to controlling deformation was restricting discontinuous deform ation of surrounding rock，avoi— ding further broken，separation and rupture，k