The application of Opposing Coils Transient Electromagnetics in the detection of karst subsidence area

被引：0
|
作者：
Xie J. [1 ]
Liu Y. [1 ]
Li X. [1 ]
Lu Y. [1 ]
Li G. [2 ]
机构：
[1] School of Resource Environment and Safety Engineering, Human University of Science and Technology, Xiangtan
[2] Second Team of Human Nonferrous Metals Geological Exploration Bureau, Xiangtan
来源：
Meitiandizhi Yu Kantan/Coal Geology and Exploration | 2021年 / 49卷 / 03期
关键词：
Engineering geological drilling; Ground collapse; Karst; Opposing coils transient electromagnetics method;
D O I：
10.3969/j.issn.1001-1986.2021.03.027
中图分类号：
学科分类号：
摘要：
Ground collapse caused by karst is both disastrous and covert. In order to forecast and control it effectively, a research area with strong karst collapse development was selected in this study, and a method that combines Opposing Coils Transient Electromagnetics with engineering geological drilling was used to verify the formation occurrence through the factors including buried depth of overburden, resistivity and isoline variation. The results of geophysical inversion maps and borehole information verification show that the Opposing Coils Transient Electromagnetics method can effectively identify the development of underground corrosion. Especially in the area where the conventional geophysical exploration methods may easily disturbed by the environmental factors, such method could achieve better application effect. Opposing Coils Transient Electromagnetics achieves effective forecast and prediction results in the developing areas of geological hazards and the karst-induced ground collapse, which could provide some theoretical and practical basis for research and analysis for similar circumstances. © 2021 Meitiandizhi Yu Kantan/Coal Geology and Exploration. All rights reserved
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页码：212 / 218+226
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