中文摘要：

针对尾矿库中铀对地下水的污染风险,通过选取污染物废液产生量、污染毒性、污染物迁移性和场地运行时间4个污染源特征指标建立污染源荷载风险评价体系,并采用层次分析法确定权重,再结合地下水的固有脆弱性评价,用两者风险等级相叠加的方法划分出5种地下水污染风险等级。同时,以某铀尾矿区为例进行地下水污染风险评价,结果表明该地区地下水污染风险级别为中低风险等级。

英文摘要：

For the risk of groundwater pollution in uranium tailings,through choosing four pollution sources＇ characteristic index including the toxic of pollution,the discharge of pollutant waste liquor,the migration of pollution and the running time of site operation,the paper set up a system about pollution load risk evaluation. The system used the analytic hierarchy process（ AHP） to determine weights,combining with the inherent vulnerability evaluation of groundwater,superimposing the two risk level methods divided into five kinds of groundwater pollution risk level. Taking a uranium tailings area as an example to assess groundwater contamination risk,the evaluation results showed that the area of groundwater pollution risk level was lowmedium.