Fine detection of wide field electromagnetic method in water-rich area of Xinyuan Coal Mine
For a long time,mine water damage is one of the major safety hazards in coal mining,which seriously threatens the safe and efficient production of coal mines.Preventing water inrush accidents has become an important problem to be solved urgently in coal mines.Therefore,it is of great significance to use new technologies and new methods to carry out fine detection of water-rich areas in coal mines.In this paper,high-power wide-area electromagnetic method is used to carry out area exploration work within 3 km2 of the sixth mining area of Xinyuan Coal Mine with high frequency density and multi-frequency synchronous transceiver technology.Through the processing and inversion of the measured data,the electrical structure in the depth range of 1200 m was obtained,and the main target horizons were divided,8 faults and 6 abnormal water-rich areas were identified,and finally the detection was verified by roadway drilling effectiveness of the method.This work shows that the wide-area electromagnetic method can realize fine detection of water-rich areas in coal mines,and provides a reliable basis for subsequent safe production in mining areas.
Coal mineWater-rich areaWide field electromagnetic methodFine detection
万方数据
维普
