赣杭构造带某铀矿区地下水中铀的存在形式研究

辐射防护 ›› 2022, Vol. 42 ›› Issue (1): 19-23.

赣杭构造带某铀矿区地下水中铀的存在形式研究

王哲¹, 朱建林¹, 张怀胜², 张春艳³, 李栋¹

1.江西省核工业地质局二六五大队,南昌 330000;
2.中国地质调查局水文地质环境地质调查中心,河北保定 071000;
3.江西省减灾备灾中心,南昌 330000

收稿日期:2021-04-06 出版日期:2022-01-20 发布日期:2022-01-24
通讯作者: 张怀胜。E-mail:hszhang0825@foxmail.com
作者简介:王哲(1992—),男,2013年毕业于东华理工大学资源勘查工程专业,2017年毕业于东华理工大学地质学专业,获硕士学位,助理工程师。E-mail:1803198849@qq.com
基金资助:
江西省1/50万铀矿系列图件编制项目。

Study on the uranium existing form in groundwater of a uranium mining area along the Gan-Hang tectonic belt

WANG Zhe¹, ZHU Jianlin¹, ZHANG Huaisheng^2*, ZHANG Chunyan³, LI Dong¹

1. Nuclear industry geological bureau of Jiangxi Province brigade two hundred sixty-five, Nanchang 330000;
2. Center for Hydrogeology and Environmental Geology Survey, China Geological Survey, Hebei Baoding 071000;
3. Jiangxi Disaster Reduction and Preparedness Center, Nanchang 330000

Received:2021-04-06 Online:2022-01-20 Published:2022-01-24

摘要/Abstract

摘要： 为研究铀矿区地下水化学性质对铀的存在形式的影响,本文以赣杭构造带某铀矿区地下水为研究对象,在对9个典型采样点地下水化学成分分析的基础上,采用数理统计软件SPSS 18.0和地球化学模拟软件PHREEQC及llnl.dat数据库,探究了研究区内地下水水化学特征及U的存在形式。结果表明:本研究区地下水水化学类型以HCO₃-Na与HCO₃-Na·Ca为主,U含量与Ca²⁺和Mg²⁺浓度体现出较强正相关性,与SO₄^2-的相关性次之;地下水中U元素主要以六价为主,几乎占100%,主要存在形式依次为UO₂(CO₃)₂^2-、UO₂(CO₃)₃^4-、UO₂CO₃、UO₂(OH)₂、UO₂(OH)₃^-、UO₂OH⁺等6种,其中UO₂(CO₃)₂^2-占绝对优势,整体以碳酸铀酰形式为主,这也与研究区地下水酸碱性相对应。

关键词: 铀矿区, 地下水, U, 存在形式

Abstract: To study the influence of hydrochemical properties of groundwater on the existing forms of uranium in uranium mining areas based on the analysis of chemical composition of groundwater, the mathematical statistics software SPSS 18.0 and the numerical simulation software PHREEQC with LLNL database were used to simulate and explore the groundwater hydrochemical characteristics and the existing forms of Uranium in groundwater throughout a uranium mining area along the Gan-Hang Tectonic belt. The results show that the hydrochemical types are mainly HCO₃-Na and HCO₃-Na·Ca, Uranium was positively correlated with Ca²⁺ and Mg²⁺, and moderately correlated with SO₄^2-. Aqueous Uranium in groundwater is mainly hexavalent, accounting for almost 100%. The existing forms of Uranium are mainly UO₂(CO₃)₂^2-, UO₂(CO₃)₃^4-, UO₂CO₃, UO₂(OH)₂, UO₂(OH)₃^- and UO₂OH⁺. Among them, UO₂(CO₃)₂^2- accounts for the absolute majority, followed by UO₂(CO₃)₃^4-, UO₂CO₃ and UO₂(OH)₂, and the total is mainly of a uranyl carbonate form, which corresponds to the acid-base property of groundwater in the studied area.

Key words: uranium ore area, groundwater, Uranium, existing form

中图分类号:

TL75+1

王哲, 朱建林, 张怀胜, 张春艳, 李栋. 赣杭构造带某铀矿区地下水中铀的存在形式研究[J]. 辐射防护, 2022, 42(1): 19-23.

WANG Zhe, ZHU Jianlin, ZHANG Huaisheng, ZHANG Chunyan, LI Dong. Study on the uranium existing form in groundwater of a uranium mining area along the Gan-Hang tectonic belt[J]. RADIATION PROTECTION, 2022, 42(1): 19-23.

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