工作面底板含水层的探测与注浆防突水实践  

Practice on Detection of Floor Aquifer and Water Outburst Prevention by Grouting

作　　者：张琅 Zhang Lang(Xinzhi Colliery,Huozhou Coal&Electricity Group Co.,Ltd.,Huozhou,Shanxi 031412)

机构地区：[1]霍州煤电集团辛置煤矿,山西霍州031412

出　　处：《江西煤炭科技》2021年第2期153-155,159,共4页Jiangxi Coal Science & Technology

摘　　要：为防止10-428B工作面回采过程中产生底板突水事故,通过采用瞬变电磁技术对底板富水区域和富水性进行探测。根据探测结果,工作面区域底板低阻异常区域数量较多,存在2处低阻异常区,突水危险性较高,且底板岩层节理裂隙发育。基于探测结果和工作面地质条件,确定进行工作面底板注浆堵水,对注浆方案进行具体设计,并在注浆结束后对钻孔涌水量监测。结果表明,注浆完成后底板钻孔的涌水量在0~0.5 m^(3)/h的范围内,成功增强了底板隔水层的隔水能力,确保了工作面回采的顺利进行。To prevent the floor outburst accident in mining process at 10-428B working face,the author introduces the transient electromagnetic method to detect water-rich area and water abundance,whose results show there are low resistivity abnormal areas with high water outburst risks and joint fissure development in floor strata,and proposes blocking water by grouting based on the detection results and geological condition,which can increase the water-isolating capacity with 0~0.5 m^(3)/h range of water yield in floor borehole and ensure the smooth mining at working face.

关 键 词：底板含水层 注浆堵水 瞬变电磁技术 富水性 

分 类 号：TD745[矿业工程—矿井通风与安全]