摘要
煤矿采动覆岩离层注浆技术中,注浆层位与采场覆岩导水裂隙带的水力联系是影响矿井安全的重要因素。为了评价五阳煤矿采动覆岩离层注浆对矿井安全的影响,通过覆岩岩性特征及富水空间性质划分3^(#)煤层上覆岩体含、隔水层层位,利用地震及测井等物探方法探明工作面范围内断裂构造的分布,采用经验公式法和数值模拟法综合确定采场覆岩导水裂隙带的发育高度。基于以上研究,综合分析论证了注浆层位与导水裂隙带间的隔水层保护能力及断层能否使注浆层位与导水裂隙带或煤层间产生水力联系,结果表明,导水裂隙带顶部与注浆位置之间有2层较厚的隔水层阻断其水力联系,构造离层注浆浆液及浆液析出水不会通过工作面范围内的7处断层进入导水裂隙带或矿井内,本工作面实施的采动覆岩离层注浆施工不会对矿井安全造成影响。
The hydraulic connection between the grouting horizon and the water-conducting fracture zone is an important factor affecting the safety of coal mine. In order to evaluate the mining strata of Wuyang mine abscission layer grouting to the mine safety influence, through the strata lithology characteristics and rich water space division No.3 coal seam in the overlying rock mass containing, lie between water layer upon layer, using seismic and log geophysical methods, such as proven working within the scope of the distribution of the fracture structure, using numerical simulation method and empirical formula method determined comprehensively the development of conductivity fracture zone height of overburden rock. Based on the above research, a comprehensive analysis, expounds on the comprehensive analysis of the grouting layer and water flowing fractured zone between the water-resisting layer of protection and fault can make grouting strata with lead water fracture zones or produce hydraulic connection between coal seam, the results showed that the water flowing fractured zone at the top and grouting position between two thick layer of water-resisting layer to block the hydraulic connection, the structure separation grouting grout and the water from the grout will not enter the water-conducting fracture zone or the mine through the 7 faults within the working face range, and the mining overburden separation grouting construction carried out in this working face will not affect the mine safety.
作者
姚文涛
寇天昊
樊斌
高泽鑫
岳鹏
温帅鑫
YAO Wentao;KOU Tianhao;FAN Bin;GAO Zexin;YUE Peng;WEN Shuaixin(China Coal Geology Group Co.,Ltd.,Beijing 100043,China;School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Wuyang Coal Mine,Shanxi Lu′an Environmental Protection Energy Development Co.,Ltd.,Changzhi 046200,China)
出处
《煤炭技术》
CAS
北大核心
2022年第8期170-174,共5页
Coal Technology
关键词
离层注浆
矿井安全
导水裂隙带
浆液渗漏
separation grouting
mine safety
water-conducting fracture zone
slurry leakage
