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基于弥散试验对场地地下水污染物运移机制的研究

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弥散试验主要是基于溶质在多孔介质中的扩散和机械弥散原理,是一种研究污染物在地下水中迁移过程的重要方法;本文以广东廉江某疑似污染地块的水文地质专项调查项目开展的弥散试验为例,采用了径向收敛水动力弥散实验理论方法进行了第四系松散沉积层的现场水动力弥散试验,测定了代表性地段地下水的流向、流速,并采用稳定径向渗流场溶质运移模型、有限差分法数值技术求解了溶质迁移的水力弥散系数,为环境影响评价提供水文地质资料.
Research on the Mechanism of Groundwater Pollution Transport Based on Tracer Test
The dispersion test is mainly based on the principle of solute diffusion and mechanical dispersion in porous media.It is an im-portant method for studying the migration process of pollutants in groundwater.Taking the dispersion test carried out in a hydrogeological spe-cial investigation project of a suspected contaminated plot in Lianjiang,Guangdong Province as an example,this paper uses the theoretical method of radial convergent hydrodynamic dispersion experiment to conduct a field hydrodynamic dispersion test of the Quaternary loose sedi-mentary layer.The flow direction and velocity of groundwater in representative sections are determined.The stable radial seepage field solute transport model and finite difference numerical technology are used to solve the hydraulic dispersion coefficient of solute migration,providing hydrogeological data for environmental impact assessment.

dispersion testsolute transporthydrogeologyenvironmental impact assessment

刘玉梅

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深圳市南科环保科技有限公司,广东 深圳 518100

弥散试验 溶质运移 水文地质 环境影响评价

2024

城市勘测
中国城市规划协会 武汉市测绘研究院

城市勘测

影响因子:0.488
ISSN:1672-8262
年,卷(期):2024.(6)