基于地下水数值模型的保护矿区水源井禁采区界定

The definition of ban area to protect water source in mining area based on the groundwater numerical model

亨元顺煤矿开采必将对矿区内既有供水水源地构成影响,不仅使取水含水层结构破坏,而且矿井排水形成的地下水降落漏斗也将导致水源井水位降低、供水量明显减少。为了确保煤矿开采情况下水源井供水不受影响,并尽可能地减少留设煤柱资源,应用Visual Modflow软件建立了水文地质概念模型和数学模型,预测煤矿开采对供水水源井的影响,并根据数值模拟结果与矿井开拓部署,采用试算模拟的方法划定了水源地禁采区范围。

The coal mining will impact the water source in Heng Yuan Shun mining area,it not only causes the aquifer structure damage,but also the groundwater drawdown funnel which is formed by the mine drainage,which will cause the water level of the water source to be reduced and the water supply quantity decreased obviously.In order to ensure that the water supply is not affected,and reduce the coal pillar resources as much as possible,using Visual Modflow software established hydrogeological conceptual model and the mathematical model,forecasting the influence of water source well from coal mining,and atrial simulation method is adopted to delineate water source protection ban mining areas according to the numerical simulation results and mine deployment.