Deep mineral exploration by airborne and ground natural field electromagnetic methods
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摘要: 较为全面地介绍了航空天然场电磁观测系统( ZTEM)的方法原理、装置及应用实例,从测量参数、探测成果和工作效率等方面对比总结了航空天然场电磁法与地面MT法。在此基础上,提出了航空天然场电磁法和地面MT联合的点面结合勘探方案,即ZTEM航空电磁法进行大面积快速测量,地面天然场电磁法针对重点和可到达的区域进行辅助性质的完善测量和查证,并为ZTEM数据反演提供参考,最终获得全区的电性特征,从而为地质体推断提供可靠参考,可为我国高山峻岭区、森林覆盖区、水体覆盖区、环境保护区矿产资源的快速有效勘查提供技术支撑。Abstract: This paper describes the theory, equipment and applications of airborne natural electromagnetic system ( ZTEM) and com?paratively summarizes the measuring parameters, exploration results and working efficiency of both airborne natural EM and ground MT methods. The local?regional exploration scheme of combining airborne EM and ground MT method is proposed based on the above dis?cussion. The ZTEM system is used for rapid survey in large area, thus ground MT is used to follow up the interested points in accessible area and provide a reference for data inversion of a ZTEM survey so as to ensure that the final exploration results truly represent the geo?logical bodies in the whole area. It can provide advanced technologies for rapid and effective exploration in high mountainous, forest?cover, water?cover and environmental protection areas in China.
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