Diffusion Law of Whole-Space Transient Electromagnetic Field Generated by the Underground Magnetic Source and Its Application
Mine water inrush stays as one of the major disasters in coalmine production and construction. As one of the principal methods for detecting hidden water-rich areas in coal mines, underground transient electromagnetic method (TEM) adopts the small loop of a magnetic source which generates a kind of...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8713976/ |
| _version_ | 1818323508296417280 |
|---|---|
| author | Jianghao Chang Jingcun Yu Juanjuan Li Guoqiang Xue Reza Malekian Benyu Su |
| author_facet | Jianghao Chang Jingcun Yu Juanjuan Li Guoqiang Xue Reza Malekian Benyu Su |
| author_sort | Jianghao Chang |
| collection | DOAJ |
| description | Mine water inrush stays as one of the major disasters in coalmine production and construction. As one of the principal methods for detecting hidden water-rich areas in coal mines, underground transient electromagnetic method (TEM) adopts the small loop of a magnetic source which generates a kind of whole-space transient electromagnetic field. To study the diffusion of whole-space transient electromagnetic field, a 3-D finite-difference time-domain (FDTD) is employed in simulating the diffusion pattern of whole-space transient electromagnetic field created by the magnetic source in any direction and the whole-space transient electromagnetic response of the 3-D low-resistance body. The simulation results indicate that the diffusion of whole-space transient electromagnetic field is different from ground half-space and that it does not conform to the “smoke ring effect” of half-space transient electromagnetic field, for the radius of the electric field's contour ring in whole space keeps expanding without moving upward or downward. The low-resistance body can significantly affect the diffusion of transient electromagnetic field. When the excitation direction is consistent with the bearing of the low-resistance body, the coupling between the transient electromagnetic field and the low-resistance body is optimal, and the abnormal response is most obvious. The bearing of the low-resistance body can be distinguished by comparing the response information of different excitation directions. Based on the results above, multi-directional sector detection technology is adapted to detect the water-rich areas, which can not only detect the target ahead of the roadway but also distinguish the bearing of the target. Both numerical simulation and practical application in underground indicate that the mining TEM can accurately reflect the location of water-rich areas. |
| first_indexed | 2024-12-13T11:13:48Z |
| format | Article |
| id | doaj.art-fdc4127110154ec9b6468b5522a86788 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-13T11:13:48Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-fdc4127110154ec9b6468b5522a867882022-12-21T23:48:41ZengIEEEIEEE Access2169-35362019-01-017634156342510.1109/ACCESS.2019.29167678713976Diffusion Law of Whole-Space Transient Electromagnetic Field Generated by the Underground Magnetic Source and Its ApplicationJianghao Chang0https://orcid.org/0000-0002-9165-686XJingcun Yu1Juanjuan Li2Guoqiang Xue3https://orcid.org/0000-0001-5020-021XReza Malekian4Benyu Su5School of Resources and Geosciences, China University of Mining and Technology, Xuzhou, ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou, ChinaIoT Perception Mine Research Center, China University of Mining and Technology, Xuzhou, ChinaKey Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, ChinaDepartment of Computer Science and Media Technology, Malmö University, Malmö, SwedenSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou, ChinaMine water inrush stays as one of the major disasters in coalmine production and construction. As one of the principal methods for detecting hidden water-rich areas in coal mines, underground transient electromagnetic method (TEM) adopts the small loop of a magnetic source which generates a kind of whole-space transient electromagnetic field. To study the diffusion of whole-space transient electromagnetic field, a 3-D finite-difference time-domain (FDTD) is employed in simulating the diffusion pattern of whole-space transient electromagnetic field created by the magnetic source in any direction and the whole-space transient electromagnetic response of the 3-D low-resistance body. The simulation results indicate that the diffusion of whole-space transient electromagnetic field is different from ground half-space and that it does not conform to the “smoke ring effect” of half-space transient electromagnetic field, for the radius of the electric field's contour ring in whole space keeps expanding without moving upward or downward. The low-resistance body can significantly affect the diffusion of transient electromagnetic field. When the excitation direction is consistent with the bearing of the low-resistance body, the coupling between the transient electromagnetic field and the low-resistance body is optimal, and the abnormal response is most obvious. The bearing of the low-resistance body can be distinguished by comparing the response information of different excitation directions. Based on the results above, multi-directional sector detection technology is adapted to detect the water-rich areas, which can not only detect the target ahead of the roadway but also distinguish the bearing of the target. Both numerical simulation and practical application in underground indicate that the mining TEM can accurately reflect the location of water-rich areas.https://ieeexplore.ieee.org/document/8713976/Transient electromagnetic fieldwhole spacecoal mine industrywater-rich areanumerical modeling |
| spellingShingle | Jianghao Chang Jingcun Yu Juanjuan Li Guoqiang Xue Reza Malekian Benyu Su Diffusion Law of Whole-Space Transient Electromagnetic Field Generated by the Underground Magnetic Source and Its Application IEEE Access Transient electromagnetic field whole space coal mine industry water-rich area numerical modeling |
| title | Diffusion Law of Whole-Space Transient Electromagnetic Field Generated by the Underground Magnetic Source and Its Application |
| title_full | Diffusion Law of Whole-Space Transient Electromagnetic Field Generated by the Underground Magnetic Source and Its Application |
| title_fullStr | Diffusion Law of Whole-Space Transient Electromagnetic Field Generated by the Underground Magnetic Source and Its Application |
| title_full_unstemmed | Diffusion Law of Whole-Space Transient Electromagnetic Field Generated by the Underground Magnetic Source and Its Application |
| title_short | Diffusion Law of Whole-Space Transient Electromagnetic Field Generated by the Underground Magnetic Source and Its Application |
| title_sort | diffusion law of whole space transient electromagnetic field generated by the underground magnetic source and its application |
| topic | Transient electromagnetic field whole space coal mine industry water-rich area numerical modeling |
| url | https://ieeexplore.ieee.org/document/8713976/ |
| work_keys_str_mv | AT jianghaochang diffusionlawofwholespacetransientelectromagneticfieldgeneratedbytheundergroundmagneticsourceanditsapplication AT jingcunyu diffusionlawofwholespacetransientelectromagneticfieldgeneratedbytheundergroundmagneticsourceanditsapplication AT juanjuanli diffusionlawofwholespacetransientelectromagneticfieldgeneratedbytheundergroundmagneticsourceanditsapplication AT guoqiangxue diffusionlawofwholespacetransientelectromagneticfieldgeneratedbytheundergroundmagneticsourceanditsapplication AT rezamalekian diffusionlawofwholespacetransientelectromagneticfieldgeneratedbytheundergroundmagneticsourceanditsapplication AT benyusu diffusionlawofwholespacetransientelectromagneticfieldgeneratedbytheundergroundmagneticsourceanditsapplication |