黔中洋水背斜分散排泄系统地下水化学特征  

Chemical characteristics of groundwater in the dispersed drainage system of Yangshui anticline in central Guizhou

作　　者：王若帆[1] 赵良杰[2] 李强[1] 吉勤克补子 焦恒[1] 江峰 陈刚[1] WANG Ruofan;ZHAO Liangjie;LI Qiang;JI Qinkebuzi;JIAO Heng;JIANG Feng;CHEN Gang(114 Geological Brigade of Guizhou Geological and Mineral Exploration and Development Bureau,Zunyi,Guizhou 563000,China;Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics,MNR&GZAR/International Research Center on Karst under the Auspices of UNESCO,Guilin,Guangxi 541004,China)

机构地区：[1]贵州省地质矿产勘查开发局114地质大队,贵州遵义563000 [2]中国地质科学院岩溶地质研究所/自然资源部、广西岩溶动力学重点实验室/联合国教科文组织国际岩溶研究中心,广西桂林541004

出　　处：《中国岩溶》2023年第4期733-741,共9页Carsologica Sinica

基　　金：贵州省地质矿产勘查开发局地质科研项目(黔地矿科合[2020]23号、黔地矿科合〔2022〕2号);贵州省地质勘查基金项目(DKJJ2021-01号);地质调查项目(DD20221758)。

摘　　要：黔中洋水背斜分散排泄系统位于贵州磷矿的主要产地,区域内磷矿山、磷化工、磷石膏堆场集中分布。研究该地区地下水化学特征,对于合理开发利用地下水资源具有重要意义。文章以岩溶地下水系统为研究对象,采集了主要地下水露头样品,运用离子对比法、主要离子比值法等水文地球化学研究方法,对地下水化学组分和离子来源进行深入分析。研究结果显示,研究区的碳酸盐岩岩溶水、基岩裂隙水、矿井水三者的水化学组分存在显著差异。碳酸盐岩岩溶水的主要化学组分来源于白云岩和白云质灰岩的溶滤作用;基岩裂隙水的主要化学组分含量是钙质泥岩溶滤与大气降水共同作用的结果;矿井水的主要化学组分则来源于白云岩、白云质灰岩的溶滤作用和人为工程活动的影响。本研究为该地区地下水资源的合理开发利用提供了科学依据,同时也有助于保护地下水资源和维护区域生态环境。The dispersed drainage system of Yangshui anticline is located in Jinzhong town,Kaiyang county,Guizhou Province.As one of the main producing areas of phosphate deposits in Guizhou,this area is concentrated with phosphorus mines,phosphorus chemical industry and phosphogypsum storage sites.Therefore,the study on the chemical characteristics of groundwater in this area is of great significance for the rational development,utilization and protection of groundwater resources.This study takes the karst groundwater system,which has relatively independent conditions of groundwater recharge,runoff and discharge,as the research object.The main samples of karst springs,bedrock fissure springs,boreholes and mine drains are collected,and the hydrogeochemical research methods such as ion comparison method and main ion ratio method are used to analyze the chemical components and main ion sources of groundwater.The results show that contents of main cations of K^(+)、Na^(+)、Ca^(2+)and Mg^(2+)are listed as:mine drainage>carbonate karst water>bedrock fissure water;contents of HCO_(3)^(-) and SO_(4)^(2-) in main anions,mine drainage>carbonate karst water>bedrock fissure water;Ion content of Cl−,mine drainage>bedrock fissure water>carbonate karst water;TDS,mine drainage>carbonate karst water>bedrock fissure water.HCO_(3)-Ca·Mg is the main chemical type of karst water in carbonate rocks;the hydrochemical type of bedrock fissure is HCO_(3)-Ca;the chemical type of mine water is mainly SO_(4)-Ca·Mg followed by SO_(4)·HCO_(3)-Ca·Mg.There are significant differences in hydrochemical composition among carbonate karst water,bedrock fissure water and mine water in the study area.The main chemical components of karst water in carbonate rocks come from the leaching of dolomite and dolomitic limestone.The content of the main chemical components of bedrock fissure water is the result of the joint action of calcareous mudstone leaching and atmospheric precipitation.The main chemical components of mine water come from the leaching of dolo

关 键 词：黔中地区 地下水化学特征 洋水背斜分散排泄系统 水岩作用 地下水开发利用 

分 类 号：P641.3[天文地球—地质矿产勘探]