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Roof and floor anomalous response of mine resistivity method

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Abstract

As the exploitation level of coal seams increases in China, mine water inrush is becoming increasingly serious. Effectively detecting the roof and floor anomalous bodies of mines in whole space has always been the focus and challenge of research with the direct current (DC) resistivity method. Based on the finite element theory and the ANSYS finite element software, the ANSYS parametric design language (APDL) of 600 m pole–dipole array A-MN or MN-B of the mine DC resistivity method is given, and the floor model with a distance of 40 m from the abnormal body to the roadway and the roof and floor model with a distance of 40 m, 30 m, 20 m, and 10 m from the abnormal body to the roadway are established, respectively. According to the analysis of calculation error, the maximum relative average error is 2.18%, which shows the correctness of the calculation of model. The calculation results of the above model are plotted, and then the anomalous response characteristics of the roof and floor of the pole–dipole array in the whole-space are obtained by comparing the figures. According to the anomalous response characteristics of roof and floor, it is conducive to accurately interpret the measured data.

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Acknowledgements

The authors gratefully acknowledge the editors and anonymous reviewers that substantially improved the manuscript. The work of the author was supported by the National Science Foundation (41807283, 41572244, 51804184), and Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talent (2019RCJJ024), and "Outstanding Youth Innovation Team Support Plan" of colleges and universities in Shandong Province (2019KJG007).

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Correspondence to Weifu Gao or Yu Liu.

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Gao, W., Liu, Y., Shi, L. et al. Roof and floor anomalous response of mine resistivity method. Environ Earth Sci 78, 696 (2019). https://doi.org/10.1007/s12665-019-8668-3

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  • DOI: https://doi.org/10.1007/s12665-019-8668-3

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