Article(id=1305177744732611304, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1305177706027578094, articleNumber=null, orderNo=null, doi=10.13355/j.cnki.sfyj.2026.04.015, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1768147200000, receivedDateStr=2026-01-12, revisedDate=1778256000000, revisedDateStr=2026-05-09, acceptedDate=null, acceptedDateStr=null, onlineDate=1789108223374, onlineDateStr=2026-09-11, pubDate=1787155200000, pubDateStr=2026-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789108223374, onlineIssueDateStr=2026-09-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789108223374, creator=13701087609, updateTime=1789108223374, updator=13701087609, issue=Issue{id=1305177706027578094, tenantId=1146029695717560320, journalId=1146120122248306696, year='2026', volume='45', issue='4', pageStart='455', pageEnd='612', issueExtLink='null', onlineDate='null', pubDate='1787155200000', pubDateStr='2026-08-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1789108214146, creator='13701087609', updateTime=1789108456673, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1305178723335037263, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1305177706027578094, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1305178723335037264, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1305177706027578094, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=585, endPage=590, ext={EN=ArticleExt(id=1305177746569716457, articleId=1305177744732611304, tenantId=1146029695717560320, journalId=1146120122248306696, language=EN, title=Distribution and Natural Attenuation Characteristics of Groundwater Uranium in the Post-mining Area of CO₂+O₂ In-situ Leaching Uranium Mine, columnId=1152626641181700664, journalTitle=Hydrometallurgy of China, columnName=Experiment Research, runingTitle=null, highlight=null, articleAbstract=

In recent years, several CO₂+O₂ in-situ leaching uranium mines in China have been facing final mining closure and decommissioning. Natural attenuation technology is an economically effective solution, and its feasibility has been demonstrated by multiple remediation cases of in-situ leaching uranium mines abroad. However, a systematic understanding of the natural attenuation patterns of groundwater uranium at in-situ leaching uranium mines has not yet been established. This study focuses on a typical post-mining area of a CO₂+O₂ in-situ leaching uranium mine in China. Based on field investigation and sampling, hydrochemical analysis and multivariate statistical methods were employed to determine the distribution characteristics and natural attenuation patterns of U in groundwater. The results show that the hydrochemical types of groundwater in the post-mining area has shifted to HCO₃·SO₄-Na type and multi-anion-Na type. The concentrations of groundwater U in the post-mining area are 0.11-7.99 mg/L and exhibit weak correlations with other major components. Natural attenuation of U concentrations is observed in 69% of the groundwater samples, with attenuation ratios ranging from 4.82% to 77.14% and attenuation rates ranging from 0.112 and 10.227 mg/(L·a). The research results demonstrate that this CO₂+O₂ in-situ leaching uranium mine possesses natural attenuation capacity, and natural attenuation technology can serve as a remediation scheme for groundwater in post-mining areas of in-situ leaching sites.

, authors=Bing YANG¹, Tong MENG², Haoyan ZHANG², Lixin ZHAO¹, authorsList=Bing YANG, Tong MENG, Haoyan ZHANG, Lixin ZHAO, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1305177746838151914, articleId=1305177744732611304, tenantId=1146029695717560320, journalId=1146120122248306696, language=CN, title=某CO₂+O₂地浸铀矿山终采区地下水铀的分布特征及自然衰减规律, columnId=1152626641328501305, journalTitle=湿法冶金, columnName=试验研究, runingTitle=null, highlight=null, articleAbstract=

近年来，我国已有多座CO₂+O₂地浸铀矿山面临终采退役，因此开展地浸终采区地下水修复相关研究具有重要意义。自然衰减修复技术是一种经济有效的修复方案，国外多个地浸铀矿山的修复案例已证实其可行性，但目前关于CO₂+O₂铀矿地浸终采区地下水中U的自然衰减规律尚未形成系统认识。为此，以我国某CO₂+O₂地浸铀矿山典型终采区为研究对象，在野外调查取样基础上，利用水化学分析及多元统计等方法，分析确定了其地下水U的分布特征及自然衰减规律。结果表明：终采区地下水水化学类型转为HCO₃·SO₄-Na型与多阴离子-Na型；终采区地下水中U质量浓度为0.11~7.99 mg/L，且与其他主要组分相关性不强；69%的地下水样品存在U的自然衰减现象，U浓度衰减率为4.72%~77.14%，衰减速率为0.112~10.227 mg/（L·a）。研究结果证实，该CO₂+O₂地浸铀矿山具有自然衰减能力，自然衰减修复技术可作为其地下水修复方案。

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杨冰（1988—），男，博士研究生，高级工程师，主要研究方向为原地浸出采铀。

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杨冰（1988—），男，博士研究生，高级工程师，主要研究方向为原地浸出采铀。

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