瞬变电磁勘探中地形改正技术的研究  

Study of terrain correction technology in transient electromagnetic exploration

作　　者：刘江[1,2] 许德才 王一凡[1,2] LIU Jiang;XU De-cai;WANG Yi-fan(Key Lab of Coal Resources Exploration and Comprehensive Utilization of Ministry of Land and Resources,Xi＇an 710005,China;Shaanxi Coalfield Geophysical Surveying and Mapping Co.,Ltd.,Xi＇an 710005,China)

机构地区：[1]国土资源部煤炭资源勘查与综合利用重点实验室,陕西西安710005 [2]陕西省煤田物探测绘有限公司,陕西西安710005

出　　处：《陕西煤炭》2018年第6期1-4,共4页Shaanxi Coal

基　　金：陕西省重点研发计划项目(项目编号:2017GY-175)

摘　　要：通过对复杂地区瞬变电磁法的地形影响特征进行研究,结合地形因素在单点曲线、剖面上及平面上的影响特征,对于采用二次电位切线斜率法进行地形改正的可行性,从归一化二次电压与视电阻率的低阻异常的关系和有限元法两个方面进行了论证,最后从点、线、面介绍了二次电位切线斜率法在地形改正技术中的应用,获得了高质量的地质成果资料,很好地完成了地质任务。Based on the study of topographic influence characteristics of transient electromagnetic method in complex areas, combined with the influenee characteristics of topographic factors on single point curves, sections and planes, the feasibility of topographic correction using secondary potential tangent slope method was demonstrated. The application of secondary potential tangent slope method in topographic correction technology has obtained high quality geological data and completed geological task very well.

关 键 词：复杂地区 瞬变电磁 地形改正 技术研究 

分 类 号：P631.325[天文地球—地质矿产勘探]