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| Detecting comparative study on goaf hydrops of coal mine by different induction electrical methods |
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Received:May 15, 2020
Revised:June 02, 2020
Accepted:June 02, 2020
Published Online:May 13, 2021
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| DOI： |
| KeyWord:induced electrical；goaf hydrops；apparent resistivity；detection |
| Author | Institution |
| Lin Jingxiang |
School of Mining Engineering,Heilongjiang universitySof scienceand Technology |
| li yuechao |
Heilongjiang University of Science & Technology |
| li guoxin |
Heilongjiang University of Science & Technology |
| li bowen |
Heilongjiang University of Science & Technology |
| li binshi |
Heilongjiang University of Science & Technology |
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| Abstract: |
| In order to determine the distribution law of water bearing body in mine goaf by comparing different electrical prospecting, taking a coal engineering in Jixi Mining Area as an example, four kinds of equipment of Transient Electromagnetic Method and Magnetotelluric Method are applied to detect goaf hydrops?of coal mine. Through comparative analysis of detection inversion results and known data to carry out the drilling verification research.The results show that the apparent resistivity variation characteristics of the inversion results of the four kinds of detection equipment are basically similar, which can reflect the vertical distribution law of electric layer, the apparent resistivity in absolute value is similar, the obtained resistivity value is 0 ~ 100Ω·m, which can detect and refer that the regional range of goaf hydrops is approximately same. It is pointed out that the underground watercourse of water source is basically consistent with the actual field data and drilling results, which verifies the effectiveness of the two methods, and the exploration conclusion of PROTEM-57 is more accurate. The research can provide technical support for mine water control and has very important engineering application value. |
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