太行山北段地下水化学特征及成因分析  

Chemical characteristics and cause of formation analysis of groundwater in the northern section of Taihang mountains HE Shu

作　　者：贺淑燕 周乐[2] 李伟[2] 刘元晴 高宗军 HE Shu-yan;ZHOU Le;LI Wei;LIU Yuan-qing;GAO Zong-jun(Geological Exploration Technology Institute of Jiangsu Province,Nanjing,Jiangsu 210049,China;Center for Hydrogeology and Environmental Geology Survey,China Geological Survey,Baoding,Hebei 071051,China;College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)

机构地区：[1]江苏省地质勘查技术院,江苏南京210049 [2]中国地质调查局水文地质环境地质调查中心,河北保定070151 [3]山东科技大学地球科学与工程学院,山东青岛266590

出　　处：《地下水》2023年第4期9-12,共4页Ground water

基　　金：中国地质调查局项目(DD20190259,DD20160289)。

摘　　要：为了解太行山北段阜平县、曲阳县地下水的水化学特征,利用91组地下水样品的测试数据,分析了各类型地下水水化学基本特征、离子组成和组分成因机制。研究结果表明:区内各类型地下水呈弱碱性,淡水范畴;阳离子以Ca^(2+)为主,阴离子以HCO_(3)^(-)为主;主要的水化学类型为HCO_(3)·SO_(4)-Ca·Mg型和HCO_(3)-Ca·Mg型。各类型地下水化学组分主要受岩石风化作用的控制,其中碳酸盐矿物的风化和硫酸溶解作用是孔隙地下水主要的离子来源;碳酸及硫酸参与的方解石和白云石矿物溶解作用是岩溶地下水中离子组分主要来源;碳酸盐岩和岩盐溶解参与了裂隙地下水化学组分的形成过程。In order to understand the hydrochemical characteristics of groundwater in Fuping County and Quyang County in the northern section of Taihang Mountain,the basic characteristics of groundwater hydrochemistry,ionic composition and genetic mechanism of components were analyzed by using the test data of 91 groups of groundwater samples.The results show that each type of groundwater in the area is weakly alkaline and belongs to fresh water category;the cations are mainly Ca^(2+),and the anions are mainly HCO_(3)^(-);the main hydrochemical types are HCO_(3)·SO_(4)-Ca·Mg type and HCO_(3)-Ca·Mg type.The chemical components of all types of groundwater are mainly controlled by rock weathering,the weathering of carbonate minerals and the dissolution of sulfuric acid are the main ion sources of pore groundwater.The dissolution of calcite and dolomite minerals involving carbonate and sulfuric acid is the main source of ionic components in karst groundwater;the dissolution of carbonate rocks and rock salts is involved in the formation of chemical components of fractured groundwater.

关 键 词：地下水 水文地质 水化学特征 相关系数 太行山区 

分 类 号：P641.2[天文地球—地质矿产勘探]