Application of Visual MODFLOW in the research on water control in certain mine

Visual MODFLOW is used to construct three-dimension groundwater numerical model based on analyzing the geohydrologic conditions of certain mine which have big inflow of water and complicated geohydrologic conditions.A numerical method was applied to calculate water inflow of the mine.Compared with the result obtained by big well method,the result obtained by the numerical method was more accurate.A method of combining surface and underground water control was selected,which was based on the surface control and supplemented by underground control.To prevent the rain flow into groundwater three methods of intercepting drain,drainage ditch and karst filled on surface were used.Three methods of anti-seepage curtain,draining water immediately and pump wells were used for underground water control.The water control engineering was applied in the numerical model of this mine.The result showed that the combined method was feasible and economic.After using these water control methods,the water inflow would be dramatically reduced,the cost would be decreased,and the environment can be protected.