大武岩溶水源地地下水水化学特征及其影响因素  

Hydrochemical characteristics of groundwater and its influencing factors in Dawu karst water source

作　　者：郭永丽 全洗强 王奇岗 章程[1,3] 吴庆 GUO Yongli;QUAN Xiqiang;WANG Qigang;ZHANG Cheng;WU Qing(Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics,MNR and GZAR,Guilin541004,China;School of Geographical Sciences,Southwest University,Chongqing400715,China;International Research Center on Karst,UNESCO,Guilin541004,China)

机构地区：[1]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,广西桂林541004 [2]西南大学地理科学学院,重庆400715 [3]联合国教科文组织国际岩溶研究中心,广西桂林541004

出　　处：《南水北调与水利科技（中英文）》2020年第4期130-140,共11页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金(41702277);UNESCO/IUGS项目(IGCP 661);桂东北岩溶系统基础地质调查项目(DD20190022);广西自然科学基金(2017GXNSFFA198006);中国地质科学院基本科研业务费(JYYWF20182002)。

摘　　要：选取北方典型岩溶裂隙含水系统,利用水文地球化学方法和统计学方法分析其地下水水化学特征及其影响因素,结果表明:沿着地下水主径流路径,地下水水化学类型种类逐年增加,除水岩作用外影响水化学类型的Ca2+、Cl-、Na+、SO42-多来源生活污水、工业废水和生活垃圾,且地下水中挥发性有机污染物的检出及NO3-、VOCs时空输入的多变性,表明区内地下水水化学持续受到人类活动的影响;利用比例系数法和因子分析法等获知影响地下水水化学的主要过程为水岩相互作用、阳离子交替吸附作用及溶滤作用,综合分析水化学类型和聚类分析可解译出监测点接收的物质组分及来源、地下水水化学动态变化过程及影响因素。Karst aquifer medium is usually inhomogeneous,and hydrogeological parameters are hard to obtain.Using a multivariate statistical method,graphic method,ions ratio method combined with karst hydrogeological conditions is an important tool to study hydrogeochemical evolution and its influencing factors.A typical karst water source in North China was selected to examine it s hydrochemical characteristics and its influencing factors using hydrogeochemical technologies and statistical methods.Along the groundwater flow path,the types of hydrochemistry were increasing year by year.In addition to the role of water and rock,Ca2+,Cl-,Na+ and SO42-multi-source domestic sewage,industrial wastewater and domestic garbage affect the hydrochemistry types.The detection of volatile organic compounds(VOCs)and the different recharging features of NO3-,VOCs spatiotemporal indicated that the groundwater hydrochemistry is continuously affected by anthropogenic activities.The main processes influencing groundwater environment in the study area were water-rock interaction,cation exchange and adsorption,lixiviation,and human activities,which can be interpreted by ion ratio,correlation analysis,factor analysis and wastewater sources of groundwater sampling points,dynamic variation processes of groundwater chemistries and their influencing factors.

关 键 词：水文地球化学方法 统计学方法 地下水水化学特征 影响因素 

分 类 号：TV11[水利工程—水文学及水资源] P641[天文地球—地质矿产勘探]