| Coal mine geological disasters mainly include gas outburst, flood, fire, etc. in ourcountry, which water disasters is the most affected in coal mine production safety,coal mine in the process of excavation or mining face, the natural balance of rockdestruction, water around through fault and collapse column, water-resisting layer andweak rock in mining working face and form water inrush accident, the productionsafety of coal mine and mining engineering caused serious threat, therefore,determine the structure and collapse column in rich water, for the prevention andcontrol of coal mine water and provide reliable geological basis for safety inproduction of great significance.In recent years, with the continuous development of instrument and methodtheory, the application of transient electromagnetic method in prevention and controlof coal mine water has made great progress, has become a kind of geophysicalexploration of strong electromagnetic prospecting method.TEM (Transientelectromagnetic method) is a time domain electromagnetic sounding method,according to the quadratic field can judge the change rule of geological body ofelectrical, scale, occurrence, etc., to help solve the problem of fault and collapsecolumn, the method has high resolution, sensitive response to low resistivity geologicbody and great exploration depth.The author during the master graduate student reading, attended the mooringmine in the first mining area and geological structure and hydrological geologydetection technology research project, in the project, the author was responsible forthe "big fixed source transient electromagnetic method evaluate fault and collapsecolumn in rich water".So choose the mooring mine in the first mining area andgeological structure and hydrological geology detection technology research,"the bigfixed source transient electromagnetic method for fault and collapse column richwater-based evaluation" subproject as the research object of the paper, withtheoretical and practical significance.Detected with strong water fault and collapse column four, identified the existence of upper and lower layers aquifer water channel, under external forcedisturbance destroy the possibility of water inrush danger, comprehensive evaluationof the potential water inrush hazard degree as the "big".Through this work, the Heshunpol mine in the first mining area and conducted acomprehensive water inrush forecast, the further work suggestions are given in theconclusion, for the Heshunpol first mining area of coal mine mining providesreliable basic data in the next step. |
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