摘要
通过瞬变电磁感应电压表达式,从原理上说明瞬变电磁法比直流电法对电阻率的变化更敏感。通过对华北煤田地质条件分析及对以往瞬变电磁勘探资料的研究,总结了华北煤田瞬变电磁勘探的主要地质任务及常见探测目标体的典型异常特征。指出瞬变电磁勘探可以在煤矿水文物探中发挥更好的作用。
By analyzing the expression of transient electromagnetic voltage, we can see Transient Electromagnetic Method 0＇EM） is more sensitive to resistivity variations than conventional DC resistivity measurement. Through researches on TEM exploration cases and geological condition of coalfield in Northern China, main tasks of TEM exploration and typical anomalous responses of these targets are summarized. Better applications in coalfield hydro-geological exploration can be expected if appropriate instrument and configuration are applied.
出处
《技术与市场》
2012年第4期18-20,共3页
Technology and Market
关键词
瞬变电磁法
水文物探
异常特征
华北煤田
Transient Electromagnetic Method （TEM）
Hydro-geology geophysical exploration
Anomalous characteristics
Coal- field in Northern China
