基于三维非稳定流数值模拟的地下水污染预测评估——以浙东典型化工区为例

Prediction of Groundwater Pollution based on three-dimensional unsteady flow——A Case Study In Typical Chemical Industry Zone of Eastern Zhejiang

利用FEELOW数值模拟软件,建立非均质、各向异性三维非稳定流地下水概念模型,对化工区地下水中的1,2-二氯乙烷及二氯甲烷进行模拟预测。预测结果分析可知:区域水文地质条件有利于地下水污染物的扩散,周边地表水对其有稀释扩散的作用,随着时间推移和距离的增加,地下水中污染物浓度可迅速降低,扩散范围较小,主要集中在污染源附近。

A concept model of heterogeneous and anisotropic three-dimensional unsteady flow groundwater was established by using FEELOW numerical simulation software,the1,2-dichloroethane and dichloromethane in the groundwater of chemical industry area were simulated and predicted.The prediction results showed that the regional hydrogeological conditions were conducive to the diffusion of groundwater pollutants,and the surrounding surface water had the effect of dilution and diffusion.With the passage of time and distance,the concentration of pollutants in groundwater could be rapidly reduced and the diffusion range was small.