摘要
近年来通过对大树硫铁矿矿井涌水的监测,发现其水量大、水质差,已造成周围水体的污染。为弄清矿井涌水来源,该文结合水文地质条件采用水化学分析方法与环境同位素分析方法,利用地下水氘过量参数与氚含量分布特征,识别矿井涌水的来源,解析矿井涌水的污染成因。结果表明:矿井涌水与部分受污染龙潭组、茅口组地下水具有相似特征,主要表现为低pH值、高SO_(4)^(2-)、高TDS和高硬度;通过氘过量参数与氚含量分布特征,识别出了矿井涌水的主要来源,采用同位素质量平衡方程对进行混合比例计算,确定了不同来源对矿井涌水的贡献量。该文采用水水化学与同位素方法识别矿井涌水来源,对大树硫铁矿地下水修复及类似矿区地下水修复具有重要参考意义。
In recent years,monitoring of Dashu pyrite abandoned mine found large amount of water and poor water quality,causing serious water pollution around.In order to find out the source of mine drainage,hydrochemical analysis method and environmental isotope method are adopted in combination with hydrogeological conditions,and deuterium excess parameter and tritium content distribution characteristics of groundwater are used to identify the source of mine drainage water.The results show that the mine drainage has similar characteristics with the groundwater of the partially polluted Longtan Group and Maokou Group,mainly manifested as low p H value,high SO_(4)^(2-),high TDS and high hardness.The source of mine drainage water was identified by deuterium excess parameter and tritium content distribution,and the mixing ratio was determined by isotopic mass balance equation.In this paper,the method of water chemistry and isotope is used to identify the source of mine drainage water,which is of great reference significance for groundwater remediation of Dashu pyrite and similar mining areas.
作者
李波
刘国
聂宇晗
叶忠
杨在文
尹观
LI Bo;LIU Guo;NIE Yuhan;YE Zhong;YANG Zaiwen;YIN Guan(School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621010,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu 610059,China;State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil&Water Pollution,Chengdu 610059,China;Sichuan Geological Engineering Exploration Institute Group,Chengdu 610072,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2020年第10期10-17,共8页
Environmental Science & Technology
基金
国家环境保护水土污染协同控制与联合修复重点实验室开放基金(GHBK-2020-018)
国家地质灾害与环境环境保护重点实验室自由探索项目(SKLGP2019Z008)。
关键词
废弃矿井
水化学分析
环境同位素
氘过量参数
氚含量
abandoned mine
hydrochemical analysis
environmental isotopes
deuterium excess parameters
tritium content
