基于GMS的云南德厚水库下游废弃砒霜厂地下水溶质运移模拟

Simulation of solute transport of groundwater at abandoned arsenic factory in downstream of Dehou reservoir in Yunnan based on GMS

地下水溶质运移模拟是找出污染物迁移规律、确定污染范围及污染物浓度分布的重要手段,可以为合理开发地下水资源、优化设计地下水开采方案及地下水污染修复提供定量依据。在分析德厚水库咪哩河流域裂隙岩溶含水层的水力性质和污染物运移特征的基础上,运用GMS软件建立地下水流场模型和溶质运移模型,对裂隙岩溶水的流场和污染物进行了数值研究,判断出了污染源分布及污染羽扩展范围,分析了砒霜厂污染物运移对水库建设的影响。

The solute transport model of groundwater is an important way to identify the contamination transfer rule and define the scope of pollution and the concentration distribution. It can provide the quantitative base for the reasonable exploitation of groundwater resources and the optimization design of groundwater exploitation program and the pollution remediation of groundwater. Based on the analysis of karst- fractured aquifer hydraulic properties and characteristics of pollutant migration in Mili river basin of Dehou reservoir,the paper used GMS software to establish the groundwater flow field and solute transport model. A numerical study for flow field and pollutants of karst- fractured water was made. It judged the distribution of pollution source and pollution plume extended range and analyzed the effect of pollutant migration on reservoir construction at arsenic factory.