[an error occurred while processing this directive] Global Geology 2019, 22(2) 91-97 DOI:   10.3969/j.issn.1673-9736.2019.02.03  ISSN: 1673-9736 CN: 22-1371/P
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shallow layer
high resolution
transient electromagnetic method
debris flow
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PubMed
Application of shallow high-resolution transient electromagnetic method (TEM) in geological investigation of debris flow
LIU Chenyang, ZHANG Xiaopei, DU Lizhi, WANG Yong
College of Construction and Engineering, Jilin University, Changchun 130012, China
ժҪ�� In the investigation of debris flow, the detection of the source area of the post-disaster debris flow is an important basis for evaluating the distribution of the debris flow accumulation layer and the subsequent control. In this paper, a shallow high-resolution TEM is used to detect the debris flow source area in Dashigou village, Yongji County, Jilin Province. The purpose of this investigation is to determine the depth range of debris flow damage. The detection results show that there is an obvious low resistance zone at about 10 m depth along the survey line, which is in good agreement with the drilling data and the high density electrical detection. It is proved that the depth is the maximum impact depth of the debris flow. The practical engineering proves that the method has high resolution in shallow layer detection, high efficiency and convenience in field acquisition. The maximum detection depth range of this method is 30-40 m, which meets the requirements of high efficiency and accurate detection for regional debris flow source area, and has high practical application value.
�ؼ����� shallow layer   high resolution   transient electromagnetic method   debris flow  
Application of shallow high-resolution transient electromagnetic method (TEM) in geological investigation of debris flow
LIU Chenyang, ZHANG Xiaopei, DU Lizhi, WANG Yong
College of Construction and Engineering, Jilin University, Changchun 130012, China
Abstract: In the investigation of debris flow, the detection of the source area of the post-disaster debris flow is an important basis for evaluating the distribution of the debris flow accumulation layer and the subsequent control. In this paper, a shallow high-resolution TEM is used to detect the debris flow source area in Dashigou village, Yongji County, Jilin Province. The purpose of this investigation is to determine the depth range of debris flow damage. The detection results show that there is an obvious low resistance zone at about 10 m depth along the survey line, which is in good agreement with the drilling data and the high density electrical detection. It is proved that the depth is the maximum impact depth of the debris flow. The practical engineering proves that the method has high resolution in shallow layer detection, high efficiency and convenience in field acquisition. The maximum detection depth range of this method is 30-40 m, which meets the requirements of high efficiency and accurate detection for regional debris flow source area, and has high practical application value.
Keywords: shallow layer   high resolution   transient electromagnetic method   debris flow  
�ո����� 2018-11-27 �޻����� 2019-01-05 ����淢������  
DOI: 10.3969/j.issn.1673-9736.2019.02.03
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Du R. 1995. Research on debris flow for thirty years in China.Journal of Natural Disasters, (1):64-73.
Guo W B, Song J P, Cao J, et al. 2006. The Application of the loop-source transient electromagnetic method to geological disaster investigation.Geophysical & Geochemical Exploration,30(4):327-326. (in Chinese with English abstract)
Li X, Wang Y, Tang M. 2014. The application of the transient electromagnetic method (TEM) to engineering geophysical exploration.Chinese Journal of Engineering Geophysics,14(3):1531-1535. (in Chinese with English abstract)
Li Y H, Teng H Q, Kang J S. 2014. Debris flows disaster causes of formation and protection measure about Foping County towns in Shanxi Province.Journal of Geological Hazards & Environment Preservation, 25(1):43-48. (in Chinese with English abstract)
Liu C. 2014. Genetic types of landslide and debris flow disasters in China.Geological Review,60(4):858-868. (in Chinese with English abstract)
Peng C. 2005. Disaster characteristics by debris flow in 2004, China and hazard reduction countermeasures.Journal of Mountain Research,23(4):437-441. (in Chinese with English abstract)
Shanmugam G. 1996. High-density turbidity currents; are they sandy debris flows? Journal of Sedimentary Research,66(1):2-10.
Song D R, Li Y, Luo Z B. 1996. Initial study on debris flow in northeast.Scientia Gelgraphica Sinica, (3):54-60. (in Chinese with English abstract)
Song Y, Wang X, Lu S. 2005. A generalised equivalent resistivity model in laminated and dispersed shaly sands.Exploration Geophysics,36(2):259-265.
Wang L, Huang J, Ji J, et al. 2017. Measurement of transient electromagnetic coupling and interference caused by disconnector operation in substation.Measurement,96:1-7.
Xi Z Z, Long X, Zhou S, et al. 2016. Opposing coils transient electromagnetic method for shallow subsurface detection.Chinese Journal of Geophysics,59(5):3428-3435. (in Chinese with English abstract)
Xie H, Liu W M, Zhao J H, et al. 2013. Characteristics of Tangjiagou debris flow in Shimian of Sichuan in July 14, 2012.Journal of Earth Sciences & Environment,35(4):90-97. (in Chinese with English abstract)
Xue L, Liu C. 2018. Analysis of environmental geological hazards in mine and its exploration methods.World Nonferrous Metals,(4):191-192. (in Chinese with English abstract)
Yang J, Wu W, Liu Z P. 2005. Applications of geophysical method to detect urban geologic hazards.Computing Techniques for Geophysical & Geochemical Exploration,27(3):33-236. (in Chinese with English abstract)
Zhang Y C, Wen P L, Zhou Y, et al. 2001. The Application of integrated geophysical techniques to the investigation of geological hazards.Geophysical & Geochemical Exploration,31(Suppl.):9-11. (in Chinese)
Zhao Y J. 2008. Problems of geological disasters triggered by mine activities and the perambulations in mine area.Journal of Geological Hazards & Environment Preservation,68:52-59. (in Chinese with English abstract)
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