中国地质调查2024，Vol.11Issue(4)：72-81,10.DOI:10.19388/j.zgdzdc.2023.229
广安市平行岭谷区地下水化学特征及控制因素分析
Groundwater chemical characteristics and analysis of the controlling factors in parallel ridge valley area of Guang'an City
摘要
Abstract
The eastern Qujiang of Guang'an City is a typical paralleled ridge valley area with unique hydrogeologi-cal conditions.The Piper triplex map,Gibbs map,Phreeqc software,ion proportional coefficient map and Pear-son correlation analysis methods were used to study the chemical characteristics and the controlling factors of groundwater.And the spatial distribution of groundwater chemical components,water-rock interaction types and groundwater chemical components source and its controlling factors were comprehensively analyzed combined with regional hydrogeological conditions.The results show that shallow groundwater in the study area is low TDS fresh water.The shallow groundwater anions are mainly HCO3-,SO42-,and the cations are mainly Ca2+,Na+.The groundwater types are mainly HCO3--Ca2+,HCO3--Ca2+.Mg2+and HCO3-Ca2+·Na+.The groundwater hydrochemical component mainly comes from the weathering of carbonate rock and silicate karst filtration,and salt rock has little effect on groundwater.The potassium salt,gypsum,anhydrite,salt rock and fluorite in groundwater are all in the unsaturated state,and the related minerals in the strata are the sources of related ions in groundwa-ter.The chemical components of groundwater are mainly controlled by leaching,positive cation exchange,coal mining and agricultural activities.The research results could provide some scientific basis for the rational develop-ment and utilization of water resources in the study area,ecological environmental protection,and economic derelopment of Chengdu-Chongqiang region.关键词
广安市/水化学/阳离子交换/淋滤作用Key words
Guang'an City/hydrochemistry/cation exchange/leaching分类
天文与地球科学引用本文复制引用
张伟,陈文彬,李健,赵明轩,程键..广安市平行岭谷区地下水化学特征及控制因素分析[J].中国地质调查,2024,11(4):72-81,10.基金项目
中国地质调查局"成渝经济圈广安市地表基质调查(编号:DD20220864)"项目资助. （编号:DD20220864）
