基于Visual Modflow地下水污染物溶质运移的模拟  

Simulation of Groundwater Polluted Contamination Migration Based on Visual Modflow

作　　者：赵贝[1] 刘建军[1] 

机构地区：[1]石河子大学水利建筑工程学院,石河子832003

出　　处：《石河子大学学报（自然科学版）》2015年第6期787-792,共6页Journal of Shihezi University(Natural Science)

摘　　要：垃圾填埋场渗滤液向地下含水层的渗漏是地下水受到污染的一个重要因素,而地下水溶质运移模型是找出污染迁移规律、确定污染范围及污染物浓度分布的重要手段。为研究垃圾填埋场渗滤液对周边地下水的污染状况,本文基于地下水流动模型Visual Modflow和多组分溶质运移模型MT3DMS软件平台之上,通过建立的三维数学模型预测了研究区域未来30年内特征污染物Cl-的污染羽迁移范围。模拟分析结果表明:距污染源越近污染物浓度越高,主要危害沿地下水流动方向的远场地地表水和浅层地下水,深层地下水和污染源上游不受影响;污染物不易污染深层地下水,但是在深层地下水中的迁移速度最大;湖泊对溶质有持续捕获作用;在污染源周围开采地下水会影响溶质迁移速度和方向。上述结果为垃圾场防渗措施的选择和地下水的治理、修复提供了定量依据。Garbage landfill leachate leaking to underground aquifers is an important factor in contamination of groundwater.The model of solute transport in groundwater is an important means of identifying the migration principle of pollution ,determining the scope of pollution and pollutant concentration distribution.For the study of a landfill leachate contamination of surrounding groundwater conditions, this paper is based on groundwater flow model,visual modflow,and MT3DMS multieomponent solute transport model software platform and predict the future characteristics of the contaminant plume 30 years CI- migration range with the three dimensional model.Analysis results show： the pollution concentration will be higher in the place where nearby pollution source,which can cause water pollution under far field downstream,but will not cause deep groundwater and upstream of pollution source contamination.The pollution will not easily pollute deep water,but it has the fastest migration speed in deep water.The lake can continue to catch the solute. Exploiting the groundwater nearby landfill will affect the migration speed and direction of solute.The results of this paper provide a quantitative basis for the choices of seepage control measures and the treatment and repairment of groundwater.

关 键 词：地下水 VISUAL MODFLOW 数值模拟 

分 类 号：TV3[水利工程—水工结构工程]