摘要
为了解泰莱盆地孔隙水水化学特征及控制因素,运用数理统计、相关性分析、Piper图、Gibbs图等方法,分析了研究区孔隙水的主要离子及水化学特征,并探讨了其控制因素.结果表明,泰莱盆地孔隙水中主要阳离子为Ca2+、Na+,占阳离子总量的86%以上,而阴离子则以HCO-3、NO-3、SO4^-为主,占阴离子总量的85%以上;水化学类型较为复杂,以HCO3·SO4(SO4·HCO3)-Ca·Mg(Ca)为主;pH均值为7.42,其pH变异系数较小,整体呈现弱碱性;研究区TDS均值为866.09 mg·L^-1,其北部及南部靠近基岩区的TDS值整体较小,呈现出南、北两侧值低,越向泰莱盆地中部越高的现状.Gibbs图及离子端元图结果表明,水化学组分主要受水-岩作用控制,以硅酸盐岩风化溶解为主且存在碳酸盐岩风化溶解,分析与研究区南、北部基岩裂隙水和岩溶水的补给有关.
In order to survey chemical characteristics and control factors of pore water in Tailai basin, 40 pore water were sampled in 2017.By means of mathematical statistics, correlation analysis, Piper diagram and Gibbs diagram, main ion and hydrochemical characteristics of porewater were analyzed, and its control factors were discussed. The results showed that Ca2+ and Na+ were the main positive ions in porewater of Tailai basin, accounting for more than 86% of the total positive ions, HCO-3,NO-3 and SO■ were the main anions, accounting for more than 85% of the total anions. The types of hydrochemistry were complex and mainly type was HCO3·SO4(SO4·HCO3)-Ca·Mg(Ca).Mean of pH was 7.42, and variation coefficient was small, belong weak alkalinity. Mean of TDS was 866.09 mg·L^-1, in the north and south of the study area near the bedrock area showed low values, and higher in the middle of the Tailai Basin. The hydrochemical components were mainly controlled by water-rock action, mainly by weathering dissolution of silicate rocks and carbonate rocks.
作者
冯建国
赫明浩
李贵恒
李伟
高宗军
陆瀛
汪云
FENG Jianguo;HE Minghao;LI Guiheng;LI Wei;GAO Zongjun;LU Ying;WANG Yun(College of Earth Science and engineering,Shandong University of Science and Technology,Qingdao,266590,China;Center for Hydrogeology and Environmental Geology Survey,China Geological Survey,Baoding,071051,China;Shandong Zhengyuan Institute of Geological Exploration,China Metallurgical Geology Bureau,Taian,271000,China)
出处
《环境化学》
CAS
CSCD
北大核心
2019年第11期2594-2600,共7页
Environmental Chemistry
基金
中国地质调查局“沂蒙山革命老区1∶5万水文地质调查”工作项目(1212012000150003)的"大汶河流域水化学演化特征研究"专题研究
山东省地下水水源地调查评价(泰菜盆地)(鲁地环201604)~~
关键词
泰莱盆地
孔隙水
水化学
控制因素
Tailai basin
porewater
hydrochemistry
control factors
