世界核地质科学2025，Vol.42Issue(3)：659-667,9.DOI:10.3969/j.issn.1672-0636.2025.03.016
某退役铀尾矿库渗水中放射性调查结果与分析
Investigation results and analysis of radioactivity in water seepage of a decommissioned uranium tailing pond
摘要
Abstract
This study monitored the activity concentrations of radionuclides in seepage water from a decommissioned uranium tailings pond,analyzed the temporal trends of radionuclide concentrations in seepage water from 2020 to 2024,and investigated the correlations between radionuclides in seepage water and monitoring well water to evaluate the radiological impact of seepage on surrounding groundwater.The results showed that the seepage water contained uranium at concentrations ranging from 15.1 to 397 μg·L-1,226Ra from 0.008 to 0.176 Bq·L-1,210Pb from 0.007 to 0.172 Bq·L-1,and 210Po from 0.004 to 0.021 Bq·L-1,levels of 226Ra,210Pb,and 210Po are all below regulatory limits.In monitoring well water,uranium concentrations ranged from 0.21 to 2.98 μg·L-1,226Ra from 0.006 to 0.023 Bq·L-1,210Pb from 0.004 to 0.131 Bq·L-1,and 210Po from 0.002 to 0.011 Bq·L-1,all consistent with local background levels.Analysis using the Mann-Kendall test revealed no significant temporal trends for uranium and 226Ra in seepage water,while 210Pb and 210Po concentrations exhibited declining trends and become stable.According to the evaluation results of Spearman correlation coefficient,the Spearman correlation coefficient ρs for uranium,226Ra,210Pb,and 210Po in the seepage water and monitoring well water were 0.314 3,0.074 4,0.939 5,and 0.460 5,respectively.Significant positive correlations were observed between 210Pb and 210Po in monitoring well water and their counterparts in seepage water.These findings provided critical data and regulatory guidance for authorities and enterprises to strengthen radiation environmental monitoring and implement targeted management strategies,thereby mitigating potential risks to groundwater safety around uranium tailings facilities.关键词
铀尾矿库/渗水/放射性核素/监测/Mann-Kendall检验法/Spearman秩相关系数Key words
uranium tailings pond/seepage water/radionuclides/monitoring/Mann-Kendall test/Sperrman correlation coefficient分类
环境科学引用本文复制引用
张锦,钟春明,高翔,张鑫..某退役铀尾矿库渗水中放射性调查结果与分析[J].世界核地质科学,2025,42(3):659-667,9.基金项目
中国核工业地质局铀矿地质项目(编号:202324-3)资助 Supported by the Central Financial Fund Project(No.202324-3)under the planning and jurisdiction of the China Nuclear Industry Geological Bureau （编号:202324-3）
