Hydrogeological Conditions Analysis Of Tao’er Coal Mine

China’s energy consumption mainly is coal, in the energy structure, coal accountfor a large proportion. North China Coal District has a large number coal resources, isvery important coal-producing area of our country. However, in there limestone waterdisaster is very typical, and later tectonic movement superimposed, which makesthe hydrogeological conditions more complex, and easy to cause mine flood. Tao’erCoal Mine has occurred in the size of water inrush accident nearly15times since putinto operation in1982. With the increasing mining depth of Tao’er, the hazard ofgroundwater to the safety production of the coal mine is growing, especially in fourmining area, seriously threatened by the underground water.Collect the geological exploration, analysis of water quality, water pumpingtest, hydrogeological data of Tao’er Coal Mine, and the relevant literature, analyze thehydrogeological conditions. At present, the main mining coal seam of the coal is2#seam, water inrush in four mining area is serious, so this research looks mainly for2#coal seam in four mining area. Based on the results of water quality analysis, useFuzzy Mathematics to establish the study area’s under the judge sets and evaluationfactors, calculate the appropriate weights and membership, finally, discriminate waterfilling source of the area, according to the principle of maximum membership degree.The water filling source in mining2#coal seam of Tao’er mainly is volt greenlimestone. According to mine groundwater boundary conditions and the hydraulicconnection between aquifers, establish the hydro geologically conceptual modelof volt green limestone aquifer in four mining area. Apply Visual Modflow toestablish a computer model, constantly optimize and adjust various parameters tomake the error between the calculated water levels and the measured meets therequirement, then identify the model, and calculate and predict mine inflow.According to water inrush identification and water inflow prediction results ofthe coal, formulate the water prevention and control measures, it has important effectto improve the safety of mine production and work efficiency.