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
a:2:{s:4:"TYPE";s:4:"TEXT";s:4:"TEXT";s:148:"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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