| In this paper, the characteristics of regional groundwater recharge, runoff and discharge have been researched through data collection, pumping tests, water chemistry analysis and data analysis. The main recharge of regional groundwater is precipitation, followed by the karst crevice water; Regional groundwater flow from the northwest to southeast. The main runoff zone is fracture zone. Karst crevice water is mainly discharged in form of spring. Mesozoic and Cenozoic porous water is mainly discharged in agricultural irrigation and evaporation. Coal floor is composed of Taiyuan coal for the upper limestone karst fractured confined aquifer and the Cambrian-Ordovician limestone karst-fractured confined aquifer. Karst fissure is developed and water-bearing are heterogeneous. Hydrogeological conditions are relatively more complicated. Threat to mine safety and production of aquifer is a limestone karst fractured Taiyuan confined aquifer, the aquifer for the two coal floor directly to a water-filling aquifer.Based on the comprehensive analysis of the Liliangdian coal geology and hydrogeological conditions, the water-filling sources and factors and channels have been researched. The mine water is prevented by hydrogeology analogue method and steady flow analysis, the normal water yield 1400m3/h, the largest water yield 2000m3/h. The reasonable prevented measures are formulated, which provide scientific basis for the mine production and flood prevention in the future.
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