摘要
瞬变电磁方法对地下水反应敏感,且具备距离目标体近、分辨率高的特点。为此,使用PROTEM47瞬变电磁系统,采用共面偶极方式布置线圈,对5302工作面顶板赋水性进行了探查,指出顶板以上至60 m高度的范围内,顶板含水裂隙发育,巷道顶部存在富水异常区,并得到了钻孔放水施工验证,为工作面安全回采提供了可靠的技术支持。井下疏放水和工作面回采资料表明,瞬变电磁法探测工作面顶板赋水性具有较高的准确性。
The TEM method is sensitive to groundwater and has the features of close to the object and high resolution. For this purpose, PROTEM47 system was used for detecting the roof aquosity of No. 5302 working face with the coil arrangement mode of common face and dipole, in 60m range above the roof, the water-bearing fissures in the roof developed, an abnormal water zone existed in the roadway roof, these were verified by drilling and water drainage and thus provided reliable technical support for the safe mining of the face. The underground dewatering and the face coal mining data showed that the use of TEM method to detect the roof aquosity of working face has higher accuracy.
出处
《矿业安全与环保》
北大核心
2014年第1期43-46,共4页
Mining Safety & Environmental Protection
基金
国家自然科学基金项目(40802062)
中央高校基本科研业务费资助项目(3142013100)
关键词
瞬变电磁法
顶板砂岩
富水性
探放水
transient electromagnetic method
roof sandstone
water abundance
water exploration and drainage
