摘要
以某地浸铀矿山为例,基于室内土柱淋滤实验,分析了包气带对U_(天然)的吸附和阻滞能力,确定了U_(天然)在包气带中的阻滞系数和分配系数等关键溶质运移参数,并结合实验结果,采用Hydrus-3D建立包气带数值模型,预测了放射性核素U_(天然)在土壤包气带中的迁移规律,结果表明:包气带对U_(天然)有较强的吸附阻滞能力,通过实验和模拟相结合的手段,可模拟预测U_(天然)在包气带中的迁移过程,为地浸铀矿山土壤、地下水环境治理及风险防控提供参考。
Taking an in-situ leaching uranium mine as an example,based on the indoor soil column leaching experiment,the natural adsorption and blocking capacity of the unsaturated zone to U natural are analyzed,and the retardation coefficient,distribution coefficient and dispersion coefficient of uranium in the unsaturated zone are determined.Equal solute transport parameters,combined with the solute transport parameters and the numerical simulation of the Hydrus-3D vadose zone,predicted the natural migration law of the radionuclide U natural in the soil vadose zone.The results show that the vadose zone has a greater effect on the U natural strong adsorption and blocking ability,through the combination of experiment and simulation,it can simulate and predict the natural migration process of U natural in the vadose zone,providing a reference for uranium mine soil and groundwater environmental management and risk prevention and control.
作者
李梦姣
葛佳亮
曹凤波
连国玺
LI Mengjiao;GE Jialiang;CAO Fengbo;LIAN Guoxi(The Fourth Research and Design Engineering Corporation of CNNC.Shijiazhuang 050021,China)
出处
《中国矿业》
2021年第S01期448-451,共4页
China Mining Magazine
关键词
土柱淋滤
数值模拟
U_(天然)
迁移
soil column leaching experiment
numerical simulation
U natural
retardation
