基于Visual MODFLOW的西北某铜金属冶炼项目地下水环境影响预测模拟

Groundwater Environmental Impact Prediction Simulation Based on Visual MODFLOW for a Copper Refining Project in Northwest China

以西北某铜金属冶炼项目为研究对象,在水文地质勘察基础上,运用Visual MODFLOW建立地下水水流模型和溶质运移耦合模型,分析该铜冶炼厂在非正常工况废酸泄露条件下特征污染物在地下水环境中的迁移规律。预测表明,在整个模拟期内,SO42-污染晕随地下水流动而迁移,其浓度和污染范围先增加后减小。两口下游虚拟观测井监测结果显示,SO42-污染物浓度均低于标准要求。地下水环境影响预测模拟有助于企业减少地下水污染的风险,确保生产质量安全。

By taking a copper smelter project in northwest China as the research object, based on the hydrogeological investigation, the groundwater flow model and solute transport coupling model were established by using Visual MODFLOW to analyze the transport law in the groundwater environment of the characteristic contaminants under the condition that waste acid leaks from the copper refining plant under abnormal working conditions. The prediction results showed that during the whole simulation period, SO42- pollution halo migrated with groundwater flow, and its concentration and pollution range increased first and then decreased gradually. The monitoring results of two downstream virtual observation wells showed that the pollutant concentration was lower than the standard requirements. The prediction simulation helps enterprises to reduce the risk of groundwater pollution and ensure the quality and safety of production.