EH-4电磁测量与时域激电测深测量在金属矿勘探中的应用效果对比

河北省丰宁县某银多金属矿普查工作中,为充分分析研究工作区内IP1激电异常,验证角砾岩筒的存在性及其产状信息,布设0、I线十字剖面以EH-4电磁测量和时域激电测深测量为勘探手段进行勘查。EH-4电磁测量和时域激电测深测量方法以地层电性差异为基础在金属矿勘查中应用较多,但二者在相同剖面位置进行测量的实例较少,文章就冀北某矿区上述两种工作方法的应用效果进行对比,探讨两种方法各自的应用效果及综合勘查的必要性。

Comparision of the application effects of EH-4 and time-domian IP sounding in metal deposit exploration

During the exploration of a silver polymetallic deposit located in Fengning county, Hebei Province, EH-4 electromagnetic measurement and time-domain IP sounding were applied along cross sections of No. 0 and No.1 lines for detailed analysis and study on No.1 IP anomaly, and the existence and attitude of breccia pipe structure. Both EH-4 electromagnetic measurement method and time-domain IP sounding method is based on the electrical difference of the strata and applied quite often in the exploration of metal deposits. But it is less common for applying the two methods simultaneously in the same deposit area. By the case study in Hebei Province, the application effect was compared by using two approaches and the necessity of comprehensive survey using the two methods was discussed.