覆岩离层注浆充填效果的综合评价.pdfVIP

第28 卷第5 期 辽宁工程技术大学学报（自然科学版） 2009 年10 月 Vol.28 No.5 Journal of Liaoning Technical University （Natural Science ） Oct. 2009 文章编号：1008-0562(2009)05-0766-04 覆岩离层注浆充填效果的综合评价 1 1 2 赵德深 ，王忠昶 ，张文泉 (1.大连大学 辽宁省高校复杂结构体系灾害预测与防治重点实验室，辽宁 大连 116622; 2. 山东科技大学 资源与环境工程学院，山东 青岛 116024) 摘 要：为了获得覆岩离层充填后地表沉陷与覆岩破坏的效果，采用点、线结合的办法建立地表移动变形观测站 监测地表移动与房屋变形规律，在井下采用仰孔分段注水法及前端泄露式多回路注(放)水系统对东滩煤矿14 308 工作面覆岩离层注浆条件下采动导水裂隙带的破坏特征进行了连续探测。结果表明：离层注浆条件下地表的减沉 率达到了38.5%，离层注浆时的采动导水裂隙带高度值略高于正常条件下的高度值。综合评价效果为类似矿井的 安全开采提供了科学依据。 关键词：离层注浆；导水裂隙带；充填效果；仰孔分段注水；移动变形 中图分类号：TD 325.2 文献标识码：A Comprehensive evaluation of grouting effect in separate strata layers of overburden 1 1 2 ZHAO Deshen ，WANG Zhongchang ，ZHANG Wenquan (1. Key Laboratory for Prediction Control on Complicated Structure System of the Education Department of Liaoning Province, Dalian University, Dalian 116622, China; 2. College of Natural Resources and Environmental Engineering, Shangdong University of Science and Technology, Qingdao 266510, China) Abstract ：To understand the surface subsidence and overburden damage after grouting in separate strata layers of overburden, the methods of points and lines were used to locate monitoring stations at surface in order to observe the surface displacement and the building deformation. At the longwall face 14308 of Dongtan coal mine, the grouting in separate strata layers of overburden was conducted using the method of underground up-hole water injection technology by intervals with bore-head leaking multi-loops effusion (discha