覆岩离层注浆减沉技术的应用与发展现状  

Application and Development Status of Technology of Grouting into Overburden Bed-separation to Reduce Ground Subsidence

作　　者：孙卫华 朱伟[2] 郑祥本 

机构地区：[1]山东中济安全评价有限公司,济南250031 [2]煤炭科学研究总院唐山研究院,河北唐山063012

出　　处：《煤炭技术》2008年第2期81-83,共3页Coal Technology

摘　　要：在分析覆岩离层注浆减沉机理基础上，对我国矿区注浆减沉试验情况进行了统计分析，得出覆岩离层注浆是一项有效的地层控制措施，在采矿和地质条件允许的情况下，地表减沉率达到36％～65％。对近年来覆岩离层注浆减沉理论的发展进行了综述，指出高性能注浆材料、注浆系统优化和注浆减沉效果的定量评价标准仍是需要深入研究的课题。分析了影响注浆减沉效果的采矿和注浆工程因素，指出在充分掌握工作面上方覆岩离层动态发育规律的基础上，合理确定注浆层位以及适宜的注浆时机，加大注浆量才能保证注浆减沉效果。On the basis of analysis of mechanism of reducing ground subsidence by grouting into overburden bed - separations, statistic analysis about cases of reducing subsidence by grouting in our country mining areas is conducted. It is presented that grouting into overburden bed - separation is proved to be an effective way to control overlying strata. Under suitable geological and mining conditions, the ground subsidence reduction ratio can reach 36 ～ 65 %. The development status of theory of grouting into overburden bed - separation in recent years is summarized, and it is stated that high - quality grouting materials, optimization of grouting system and quantitative evaluation criterion on subsidence reduction effect by grouting are need to studied profoundly. Mining and grouting engineering factors that ilffluence subsidence reduction effect are analyzed, it is concluded that on the conditions of mastering overburden bed - separation dynamic developing laws, determining grouting horizon and occasion and enhancing grouting quantity can guarantee subsidence reduction effect.

关 键 词：覆岩离层注浆 减沉率 注浆系统优化 离层动态发育规律 注浆层位 

分 类 号：TD823[矿业工程—煤矿开采]