厚煤层开采覆岩导水裂隙带发育高度研究  

Study on Height of Overlying Rock Water-conducting Zone in Thick Coal Seam Mining

作　　者：侯晨曦 杨达明 郭延华[1] HOU Chenxi;YANG Daming;GUO Yanhua(School of Civil Engineering,Hebei University of Engineering,Handan,Hebei 056038,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《河北工程大学学报（自然科学版）》2024年第5期71-77,共7页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金面上项目(52074100);国家自然科学基金资助项目(52104081);河北省自然科学基金资助项目(E2022402031,E2020402041);邯郸市科学技术研究与发展计划项目(19422121008-34)。

摘　　要：针对水体下采煤时覆岩受扰动后可能导致顶板涌水问题,以掌石沟煤矿15102工作面为研究对象,采用数值模拟、分段封堵测漏与钻孔电视法得到该工作面15#煤层的导水裂隙带发育高度。对模拟和实测成果分析表明:模拟和现场观测的导水裂隙带高度分别为49、48.3 m,最终确定导水裂隙带高度为48.3 m,裂采比为11.78,上界面岩层类型为砂质泥岩,厚度为4.2 m,距煤层约48 m。Regarding the issue of roof water inrush caused by disturbance to the overlying rock during coal mining under water bodies,in this paper,the 15102 working face of Zhangshigou coal mine is taken as the research object,and the development height of the water-conducting zone of the 15#coal seam of this working face is obtained by the numerical simulation,segmented plugging and leakage testing and drilling TV method.The simulation analysis and actual measurement results shows that the heights of the water-conducting zone are 49 m and 48.3 m from the simulation and field observation,respectively.The final height of the water-conducting zone is 48.3 m,the fracture-mining ratio is 11.78,and the rock layer type at the upper interface is sandy mudstone,with a thickness of 4.2 m and a distance of about 48 m from the coal seam.

关 键 词：厚煤层开采 数值模拟 导水裂隙带 钻孔漏失量 

分 类 号：TD325[矿业工程—矿井建设]