接地源短偏移瞬变电磁法研究展望  

Research prospect to grounded-wire TEM with short-offset

作　　者：薛国强[1] 闫述[2] 陈卫营[1] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]江苏大学计算机科学与通信工程学院,镇江212013

出　　处：《地球物理学进展》2014年第1期177-181,共5页Progress in Geophysics

基　　金：国家重点基础研究发展计划973(2012CB416605)项目;国家自然科学基金项目(41174090)联合资助

摘　　要：开展第二深度空间（500～2000m）矿产资源精细探矿，已成为一项肾迫和长期的任务，研究瞬变电磁探测新方法、新技术，是完成大深度、高精度找矿任务的途径之一．针对电性源瞬变电磁法的优越性，本文提出采用接地源短偏移瞬变电磁法解决深部目标矿体精细探测这一问题．从探测装置、探测深度、数据处理、资料解释等方面对这种方法进行讨论．通过对短偏移装置探测能力、对地形影响、静态效应、偏移成像等几个关键技术问题的分析，认为这种方法可以实现大深度、高精度探测目标，接地线源短偏移瞬变电磁法是一种适合深部探矿并值得推广的方法．To carry out the second deep space （500-200 m） mineral resources prospecting has become a pressing and long- term task. Developing TEM new method and new technology is the urgent need to detect deeper-buried ore body with high resolution. Based on the merit of grounded-wire TEM, the idea of using grounded-wire TEM with short-offset （SOTEM） to solve the problem of deeper-buried target high-solution detection has been proposed in this paper. Configuration construction, detecting depth, collection, data processing and data interpretation have been discussed respectively. The detecting ability of SOTEM and the key problems of the terrain effect, static effect, and migration imaging also have been analyses, respectively. It is recognized that deep-buried ore body can be detected by using SOTEM system. The conclusion that SOTEM is a kind of suitable method for deeper-depth detection and worth of promotion has been drawn.

关 键 词：瞬变电磁 接地源 短偏移 深部探矿 

分 类 号：P631[天文地球—地质矿产勘探]