Numerical Simulation of Influence of Pressure Reduction by Water Drianage in Ermugou Mine on Hongshan Spring
SHEN Xiong
ZHANG Yongbo
Abstract：In this paper, analysis was made on the geological and hydro-geological conditions of Hongshan spring and mine field by taking Pingyao Ermugou Mine as an example, since the pressure reduction measure by water drainage was taken in the pressure zone of No. 11 coal seam, the conceptual and mathematical models of hydro-geology were established with Visual Modflow software and prediction was carried out on its influence upon the karst groundwater of Hongshan spring. The research results showed that when a water drainage pressure-reduction well was arranged in the eastern area of the mine field where the water inrush coefficient was in the range of 0. 06-0. 07 MPa/m, the maximum water level drawdown in the simulated area was about 54 m, the influence radius was about 2 056. 77 m and the affecting area was about 13. 29 km2 after water drainage for 110 d, this indicated that the pressure reduction by water drainage would affect the karst groundwater environment of Hongshan spring, which can provide basis for the coal mining and water resources protection.
Keywords：Hongshan springcoal mininggroundwater environmentnumerical simulation
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 43-46 )