Application of Visual Modflow in predicting shaft water inflow in the Baijian iron mining area

Based on the analysis on hydrogeology and boundary conditions of the Baijian mining area, Visual Modflow model is recognized and verified with actual measurement data, meanwhile, the parameter of the aquifer is modified. The modified model is reliable and can be used for water inflow prediction in the Baijian mining area. According to the different boundary and permeability coefficient in the Ordovician limestone aquifer, three predicting schemes on -200m and -400m horizontal plane with different boundaries and permeability coefficients are designed and used. The results show that schemes 2 is more reasonable and can really reflect the water inflow when the water table drops down to -400m in Baijian mining area, and the predicted water inflow is 7505 m3/h.