Water Filling Conditions and Prediction of Mine Water Inflow in the 3-1 Coal Seam of Muduchaideng Coal Mine in Inner Mongolia
The Muduchaideng coal mine has a large amount of water inflow which is high salinity water,facing drainage and surface treatment of mine water.On the basis of analyzing the geological and hydrogeological conditions of the mining area,it is believed that when mining the 3-1 coal seam,the inflow comes from the sandstone aquifer at the top of the 3-1 coal seam and the bottom boundary of the Zhiluo Formation,including the middle and coarse-grained sandstone aquifer at the bottom of the Zhiluo Formation and the sandstone aquifer in the third section of the Yan'an Formation at the top of the 3-1 coal seam.The water inflow of the 30209 working face calculated using the large well method and Darcy's law are 931m3/h and 919m3/h,respectively,which are close to the actual situation.Research can provide a basis for the feasibility and degree of reduction of lateral grouting sealing(aquifer transformation)and curtain interception in the working face.
mine water prevention and controlanalysis of water filling conditionsprediction of mine water inflowMuduchaideng coal mine
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