Analysis of Hydrogeological Characters and Water Inflow Calculation in Qipanjing Coal Mine

In this article, hydrogeological characters of Qipanjing Coal Mine were analyzed,it is concluded that the direct water-filling source of 9^# coal seam and 16^# coal seam are 9^# coal seam goaf water and aquifer in carboniferous upper Taiyuan formation to the second section of immediate roof rock aquifer of permian lower Shanxi group, the limestone aquifer in middle ordovician Zhuozishan formation is maximum potential threat of water-filled water. The main water-filling channels are roof water flowing fractured zone, floor original water rising zone, suspected collapse column and fault and poor sealing borehole. Based on the different water yielding mechanism in different water yielding points, fixed water volume and changed water volume were calculated by different methods in western area where the normal mine discharge is 244.5 m³/h and the maximum mine discharge is 440.7 m³/h.