Sthdy On Numerical Simulation And Its Application Of Mine Underground Water

The floor hydrogeological condition of 10th coal seam is extremely complex, in which floor of Carboniferous limestone karst fissure water of the coal seam there is a big threat. In order to eliminate flooding, and ensure safety in production, it is necessary to carry out hydrophobic step-down project for the layers water of coal seam floor limestone water.In this thesis, Mine of a mining area south of floor water bursting limestone water is dangerous for the research background, according to kinetic theory of groundwater, hydrogeology, mining mine safety theory and theory of subject knowledge, analysis of the five coal mine in a mining area in Southern environmental characteristics of groundwater system structure, in turn to set up a mining area south of the hydrogeological conceptual model, mathematical model;Geostatistics theory of the water table and the relationships between the bottom elevation, using the known observational data used to calculate synergy Kriging interpolation calculation of the initial value of the node level, and based on more accurate mapping software SURFER South the initial mining area of a groundwater flow field;It used GMS numerical simulation software for model calibration run and inversion by modifying the hydrological parameters and geometric parameters. Then analyzed comparative the simulated flow field consistent with the actual flow field conditions. the model results reveal the basic accordance with the hydrogeologic conditions, meet the requirements of the groundwater level prediction.Adopt different plans to discharge water, and forecast groundwater level in the region at the end of 2010.06 and drainage water table in different time, then obtain the trend of the regional cone of depression. After-analysis of the role of confined water on the water burst, bottom composition and water resistance properties of rock, water inrush coefficient method used in 10 coal mining and coal face heading face the threat of flooding to the floor analysis; combination of existing research results seam floor and 10 floor seam group impermeable layer, and GMS simulation results, to solve the water inrush coefficient method underestimated due to water pressure caused by pricing errors, to achieve the 10 coal mining safety evaluation of 1016 face, access to safe mining face Drainage Programme 1016;Based on the above findings, combined with mine water hazard control the present situation, it proposed mining safety measures of 1016 workface.