浅埋厚煤层工作面导水裂隙带发育高度研究  

Study on height of water-conducting fissure zone in working face of shallow thick coal seam

作　　者：王子升 WANG Zi-sheng(Shendong Technology Research Institute of CHN Energy Group,Shenmu 719300,China)

机构地区：[1]国家能源集团神东技术研究院,陕西神木719300

出　　处：《煤炭工程》2021年第9期66-70,共5页Coal Engineering

摘　　要：为了确定浅埋厚煤层工作面导水裂隙带的发育规律及高度,以寸草塔二矿31204工作面为工程背景,运用相似模拟试验对导水裂隙带的发育规律和高度进行了预测,运用井下分段注水和钻孔电视相结合的监测方法对导水裂隙带的发育高度进行综合确定。研究结果表明:导水裂隙带的发育随工作面开采呈动态发展,随工作面开采导水裂隙带高度增加,相似模拟试验确定导水裂隙带高度为49.7m,井下分段注水法与钻孔电视法现场监测得到的结果分别为53.0m和48.8m,最终确定导水裂隙带高度在48.8~53.0m之间。In order to determine the development law and height of the water-conducting fissure zone in working face of shallow thick coal seam, taking the 31204 working face of Cuncaota No.2 Mine as the engineering background, the development law and height of the water-conducting fissure zone are predicted using similar simulation test, then the height is determined comprehensively using the monitoring methods of underground segmented water injection and borehole TV imaging. The research results show that, the development of the water-conducting fissure zone develops dynamically with the working face mining, and the height of the zone increases as the mining proceeds. According to the similar simulation test, the height of the water-conducting fissure zone is 49.7 m. The field monitoring results of underground segmented water injection and borehole television imaging are 53.0 m and 48.8 m, respectively. Finally, the height of the water-conducting fissure zone is determined to be 48.8~53.0 m.

关 键 词：浅埋厚煤层 导水裂隙带 井下分段注水法 钻孔电视法 

分 类 号：TD745.2[矿业工程—矿井通风与安全]