Study on Simulation and Safety Prevention of Underground Water Inflow in Open-Pit Mine
The prediction of water inflow in open-pit mine is a necessary prerequisite for the formulation of mine drainage and drainage scheme.Taking Barun open-pit mine as an example,by analyzing the hydrological and engineering geological data of the mining area,a three-dimensional groundwater numerical model of the mining area was established.Based on this,the water inflow prediction and regional water balance analysis of the water inflow point were carried out.The results show that the simulated water inflow in the mining area is 3903.2 m3/d,compared with the"big well method",the prediction results are closer to the actual survey results and can reflect the mine water inflow more objectively and accurately.The quaternary diluvial and alluvial aquifers of the 28-39 exploration line in the north of the eastern mining area had caused slope seepage due to uneven replenishment and drainage.Based on this,a combined treatment scheme of inclined drainage holes and intercepting ditches was proposed.The drainage simulation of three exploration line slopes of 28,32 and 36 was carried out.The simulation results show that the inclined drainage holes can effectively reduce the groundwater level,reduce the seepage of the slope surface and improve the stability of the slope.The research results can provide theoretical reference for mine flood control.
万方数据
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