摘要
掘进迎头超前探水钻要探清楚含导水构造的空间位置比较困难。常规矿井瞬变电磁在含导水构造探测方面得到了广泛应用,但其存在巷道干扰因素较多等问题。巷-孔瞬变电磁三分量探测技术在钻孔中使接收位置更靠近异常区,降低了巷道内的电磁干扰对测量结果的影响,可针对性地对钻孔附近异常进行三维探查,具有探测精度高、对含导水构造反映敏感等优点。以某煤矿6煤西翼辅运大巷为例,利用掘进工作面超前探放水钻孔,使用巷-孔三分量瞬变电磁超前探测技术探测掘进工作面迎头前方含导水构造的范围及位置。结果表明:巷-孔瞬变电磁探测法可以探测钻孔径向30m以内的含导水地质构造的空间位置与异常大小,效果良好。
To clearly find out spatial position of water-bearing and water conducting structures through only driving head-on advance water prospecting drilling is rather difficult. The conventional mine TEM has been widely used in this connection. But still have issues of more roadway interference factors etc. The roadway-borehole TEM three-component prospecting can make receiving position in borehole closer to abnormal place, thus can lower down roadway electromagnetic interference impact on prospecting result, the 3D prospecting aimed anomalies around borehole has advantages of high prospecting accuracy, water-bearing and water conducting structure sensitive etc. Taking the coal No.6 west wing auxiliary haulage roadway in a coalmine as an example, using heading face advance prospecting and drainage borehole, through roadway-borehole three-component TEM prospecting to detect head-on water-bearing and water conducting structure range and position. The result has shown that the method can prospect spatial position and anomaly size of water-bearing and water conducting geological structure within borehole radial direction 30m with good effect.
作者
李学潜
韩德品
王程
范涛
李博凡
Li Xueqian;Han Depin;Wang Cheng;Fan Tao;Li Bofan(China Coal Research Institute, Beijing 100013;Xi’an Research Institute, China Coal Technology and Engineering Group Corp, Xi’an, Shaanxi 710077)
出处
《中国煤炭地质》
2019年第3期77-82,共6页
Coal Geology of China
关键词
巷-孔
瞬变电磁法
含导水构造
超前探测
roadway-borehole
TEM
water-bearing and water conducting structure
advance prospecting
