Short-offset grounded-wire TEM method for efficient detection of mined-out areas in vegetation-covered mountainous coalfields

doi:10.1071/EG15095

	Short-offset grounded-wire TEM method for efficient detection of mined-out areas in vegetation-covered mountainous coalfields
	Zhou, Nannan; Xue, Guoqiang; Hou, Dongyang; Li, Hai; Chen, Weiying
刊名	EXPLORATION GEOPHYSICS
	2017-12-01
卷号	48 期号:4 页码:374-382
关键词	Detection Resolution Mined-out Area Short-offset Grounded-wire Tem Vegetation-covered Mountainous Coalfield
ISSN号	0812-3985
DOI	10.1071/EG15095
文献子类	Article
英文摘要	The in-loop transient electromagnetic (TEM) method has been widely used for reliable investigation of mined-out areas of the subsurface. However, the method has limited applications in mountainous coalfields that are often covered with tall vegetation: first, it requires extra work to clear the surface and set up the TEM equipment; more importantly, dense vegetation restricts the required layout of a standard rectangular loop, and such geometry irregularity can decrease the detection accuracy. This study proposes using short-offset grounded-wire TEM (SOTEM) for enhanced detection of the mined-out areas in vegetation-covered mountainous fields. The distance between the SOTEM source and receivers is flexible and thereby the receiving location can be freely adjusted according to the environmental conditions of the surveying area, without reducing the detection resolution. Properties of the proposed SOTEM method are well tested before real applications, and our test indicates that SOTEM has an axis-symmetric field distribution, higher sensitivity to anomaly, and larger detection depth, compared to the conventional large-loop TEM method. Application to one coalfield in Changzhi (Shanxi Province, China) demonstrates the added value of implementing SOTEM for detecting the mined-out areas in this field and the results are well verified by the drilling result.
WOS关键词	DIPOLE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	CSIRO PUBLISHING
WOS记录号	WOS:000415997000003
资助机构	State Major Basic Research Program of the People's Republic of China(2012CB416605) ; State Major Basic Research Program of the People's Republic of China(2012CB416605) ; Natural Science Foundation of China (NSFC)(41174090 ; Natural Science Foundation of China (NSFC)(41174090 ; General Financial Grant from the China Postdoctoral Science Foundation(2015M571111) ; General Financial Grant from the China Postdoctoral Science Foundation(2015M571111) ; Open Fund of the Key Laboratory Mineral Resources(KLMR2015-13) ; Open Fund of the Key Laboratory Mineral Resources(KLMR2015-13) ; 41474095) ; 41474095) ; State Major Basic Research Program of the People's Republic of China(2012CB416605) ; State Major Basic Research Program of the People's Republic of China(2012CB416605) ; Natural Science Foundation of China (NSFC)(41174090 ; Natural Science Foundation of China (NSFC)(41174090 ; General Financial Grant from the China Postdoctoral Science Foundation(2015M571111) ; General Financial Grant from the China Postdoctoral Science Foundation(2015M571111) ; Open Fund of the Key Laboratory Mineral Resources(KLMR2015-13) ; Open Fund of the Key Laboratory Mineral Resources(KLMR2015-13) ; 41474095) ; 41474095) ; State Major Basic Research Program of the People's Republic of China(2012CB416605) ; State Major Basic Research Program of the People's Republic of China(2012CB416605) ; Natural Science Foundation of China (NSFC)(41174090 ; Natural Science Foundation of China (NSFC)(41174090 ; General Financial Grant from the China Postdoctoral Science Foundation(2015M571111) ; General Financial Grant from the China Postdoctoral Science Foundation(2015M571111) ; Open Fund of the Key Laboratory Mineral Resources(KLMR2015-13) ; Open Fund of the Key Laboratory Mineral Resources(KLMR2015-13) ; 41474095) ; 41474095) ; State Major Basic Research Program of the People's Republic of China(2012CB416605) ; State Major Basic Research Program of the People's Republic of China(2012CB416605) ; Natural Science Foundation of China (NSFC)(41174090 ; Natural Science Foundation of China (NSFC)(41174090 ; General Financial Grant from the China Postdoctoral Science Foundation(2015M571111) ; General Financial Grant from the China Postdoctoral Science Foundation(2015M571111) ; Open Fund of the Key Laboratory Mineral Resources(KLMR2015-13) ; Open Fund of the Key Laboratory Mineral Resources(KLMR2015-13) ; 41474095) ; 41474095)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82098]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhou, Nannan
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Nannan,Xue, Guoqiang,Hou, Dongyang,et al. Short-offset grounded-wire TEM method for efficient detection of mined-out areas in vegetation-covered mountainous coalfields[J]. EXPLORATION GEOPHYSICS,2017,48(4):374-382.
APA	Zhou, Nannan,Xue, Guoqiang,Hou, Dongyang,Li, Hai,&Chen, Weiying.(2017).Short-offset grounded-wire TEM method for efficient detection of mined-out areas in vegetation-covered mountainous coalfields.EXPLORATION GEOPHYSICS,48(4),374-382.
MLA	Zhou, Nannan,et al."Short-offset grounded-wire TEM method for efficient detection of mined-out areas in vegetation-covered mountainous coalfields".EXPLORATION GEOPHYSICS 48.4(2017):374-382.