THE USE OF ELECTROMAGNETIC SOUNDING TO ESTIMATE THE STATE OF UNDERMINED COAL ROCK MASS
A. V. Antsiferov, L. A. Ivanov, V. V. Tumanov, A. V. Savchenko, V. A. Antsiferov
Republican Academic Research and Design Institute of Mining Geology, Geomechanics, Geophysics and Mine Surveying, Donetsk, Donetsk People’s Republic
Keywords: Electromagnetic sounding, specific electrical resistivity, undermined rock mass, geoelectric model
Abstract
According to the borehole logging analysis and near-field transient electromagnetic sounding method, a positive electric resistivity anomaly was detected from top to bottom along the section above the abandoned coal seam. This anomaly indicates a downward movement of groundwater and saturation of rocks with gas.
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