瞬变电磁法偶极装置模型实验研究  

ON MODEL EXPERIMENTS OF TEM DIPOLE CONFIGURATION

作　　者：刘长胜[1] 林君[1] 嵇艳鞠[1] 吴国强[1] 

机构地区：[1]吉林大学地球信息探测仪器教育部重点实验室,吉林长春130026

出　　处：《物探与化探》2006年第5期430-434,共5页Geophysical and Geochemical Exploration

基　　金：国家高技术研究发展计划(863计划)(2002AA615030)

摘　　要：通过室内大量的模型实验,分析了偶极装置下导电球体、柱体及球柱组合体的瞬变响应特征,研究了偶极装置的探测分辨能力,讨论了极距大小和测点定位问题,最后归纳出偶极装置的一些工作特点。偶极装置下异常曲线形态较为复杂,解释难度较大,但受一次场影响较小,浅层探测分辨能力强,而且野外工作方便灵活,这些特点为偶极装置在诸如海底等特殊环境中进行瞬变电磁探测奠定了基础。A mass of model experiments are performed. By studying the response of several typical conductive bodies in dipole transient electromagnetic systems, this paper analyses the exploration resolving power of dipole configuration, discusses the problems about dipolar distance and the way to fix the detecting point, and finally concludes the working characteristics of this configuration. The forms of response curves of these bodies in dipole transient electromagnetic measurement are complicated and more arduous to interpret. However, the disturbing of primary field is small for dipole configuration and it has strong ability to distinguish dissimilar bodies from background. Moreover, it is very convenient and flexible. So it adapts to be used in the transient electromagnetic detecting of shallow seafloor and other special environment.

关 键 词：瞬变电磁法 模型实验 偶极装置 分辨能力 

分 类 号：P631[天文地球—地质矿产勘探]