广域电磁法理论及应用研究的新进展  

New research progress in theory and application of wide field electromagnetic method

作　　者：何继善 HE Ji-Shan(Ministry of Education Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring,Changsha 410083,China;Hunan Key Laboratory of Nonferrous and Geological Disaster Detection,Changsha 410083,China;School of Geosciences and Info-physics,Central South University,Changsha 410083,China)

机构地区：[1]有色金属成矿预测与地质环境监测教育部重点实验室(中南大学),湖南长沙410083 [2]有色资源与地质灾害探测湖南省重点实验室,湖南长沙410083 [3]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《物探与化探》2020年第5期985-990,共6页Geophysical and Geochemical Exploration

基　　金：国家重点研发计划项目(2018YFC0807802);国家自然科学基金面上项目(41874081)。

摘　　要：矿产资源是国民经济发展的命脉,电磁法是寻找矿产资源的最有效方法之一,随着浅部资源的日渐枯竭,大深度高精度的电磁勘探是世界各国共同面临的技术难题,也是勘探地球物理学的研究热点。针对原有的人工源频率域电磁法深度浅、精度低等问题,从理论、方法、技术到应用,开展了系统研究,发明了广域电磁法。为频率域电磁法由粗放到精细的发展,跨越了一大步。由此形成了"大深度高精度广域电磁勘探技术与装备"成果,2018年荣获国家技术发明一等奖。广域电磁法为油气勘探、深部找矿、煤矿水害探测、地质灾害防治、压裂监测、城市物探等提供了全新的技术手段,有力地支撑了面向国家重大需求的"深地探测"战略。本专栏收集的论文,主要分布在固体矿产、页岩气和地热探测,压裂监测与航空物探应用等技术研究领域。本文重点围绕这些论文,对广域电磁法理论及应用研究进展加以讨论。Mineral resources are the lifeblood of national economic development.Electromagnetic method is one of the most effective methods to search for mineral resources.With the depletion of shallow resources,developing a both large-depth and high-precision electromagnetic method has become big challenge for all countries in the world,which is also the research hotspots.Aiming at the problems of shallow depth and low precision of the original artificial source frequency domain electromagnetic methods,from theory,method,technology to application,the author carried out systematic research and invented WIDE FIELD ELECTROMAGNETIC METHOD.It is a great leap forward for the development of frequency domain electromagnetic method from coarse to fine.As a result,the achievements of"large depth and high precision wide field electromagnetic exploration technology and equipment"have been formed,it won the First Prize of National Technological Invention in 2018.Wide field electromagnetic method provides a new technical means for oil and gas exploration,deep prospecting,coal mine water disaster detection,geological disaster prevention,fracturing monitoring and urban geophysical exploration.It has strongly supported the"deep ground"strategy oriented to the major needs of the country.The papers collected in this column are mainly distributed in the technical research fields of solid mineral,shale gas and geothermal exploration,fracturing monitoring and airborne geophysical application.This paper focuses on these papers and discusses the development of the theory and application of wide field electromagnetic method.

关 键 词：大深度 高精度 广域电磁法 伪随机信号 

分 类 号：P631[天文地球—地质矿产勘探]