The dewatering test for deep mining and numerical simulation analysis in Beiminghe Iron Mine

To investigate the hydrogeology condition at the east of 2nd line in Beiminghe Iron Mine thoroughly,and provide scientific and reasonable basis for deep mining.A large group of water hole of unsteady flow interference test was taken for the ordovician limestone aquifer,and the existing hydrogeologcal observation holes are used to carry out the dewatering test,simulation analysis was carry out by using the software of the FEFLOW,which can be used to identify the hydrogeological parameters and forecast the water inflow of deep limestone aquifer.The results show that the permeability of deep limestone aquifer is weak,there is certain waterpower relation among both sides of 2nd line of limestone aquifer,the whole limestone aquifer of Bei minghe Iron is unified water-logged stratum.