瞬变电磁(TEM)中心回线装置发射框边长与最佳探测深度关系的探讨  

THE RELATIONSHIP BETWEEN THE LOOP SIZE AND THE OPTIMAL DETECTING DEPTH IN IN-LOOP TEM

作　　者：王善勋 刘军 雷振 

机构地区：[1]陕西省地质调查院,西安710065 [2]西北有色地质勘查局物化探总队,西安710068

出　　处：《物探化探计算技术》2012年第5期548-551,501,共4页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：利用电磁学原理,推导出了载流正方形回路地下均匀半空间介质中心轴线上感应磁场强度B的理论表达式。通过系列的理论计算、对比和讨论,提出了瞬变电磁法中心回线装置探测深度主要受发射线框边长制约,其最佳探测深度与发射框边长二分之一相当的观点。这里引用了一些生产、试验事例,从实践上对这一观点加以佐证。旨在引起同行们的注意,以便在实际生产中更好地利用瞬变电磁法。Based on the theory of electromagnetism,this paper deduced theoretical equation of inductive magnetic field B at central axes under ground base on square loop circuit.Through theoretical calculation,contrast and discussion,the paper puts forward a point that the detecting depth is most restricted by transmitting loop size in in-loop TEM.The optimal detecting depth is approximately equal to half the loop size.A practical example is cited to prove the conclusion.The author rose some attention to craft brother,so we can use TEM better in future production.

关 键 词：瞬变电磁 中心回线装置 最佳探测深度 发射框边长 

分 类 号：P631.325[天文地球—地质矿产勘探]