甘肃疏勒河流域地下水水化学特征及成因研究  

Study on the hydrochemical characteristics and genesis of groundwater in the Shule River Basin of Gansu Province

作　　者：郑彦丰 ZHENG Yanfeng(China Energy Construction Group Gansu Electric Power Design Institute Co.,Lanzhou 730000,China)

机构地区：[1]中国能源建设集团甘肃省电力设计院有限公司,兰州730000

出　　处：《地质装备》2024年第6期20-26,共7页Equipment for Geotechnical Engineering

摘　　要：地下水是我国重要的供水来源,因此,研究地下水的水化学特性和成因十分必要。本文以疏勒河流域地下水为研究区,在其上下中游采取11组水样为研究对象,通过统计分析、Piper三线图、Gibbs图以及离子比例法,全面探讨了地下水的水化学特征、空间分布规律及其影响因素。结果表明,甘肃疏勒河流域地下水水化学类型主要为SO_(4)-Ca和SO_(4)-Na,主要阴阳离子是SO_(4)^(2-)、Na^(+)、Ca^(2+);研究区地下水赋存环境不同,地下水化学成分受到了硅酸盐溶解作用;水样为中等矿化水,地下水既受岩石分化的影响,有受蒸发浓缩作用影响。Groundwater is an important source of water supply in China.Therefore,it is necessary to study the hydrochemical characteristics and genesis of groundwater.In this paper,the groundwater in the Shule River Basin was taken as the research object,and 11 groups of water samples were taken in the upper and lower reaches of the study area.Through statistical analysis,Piper three-line diagram,Gibbs diagram and ion ratio method,the hydrochemical characteristics,spatial distribution patterns and influencing factors of groundwater were comprehensively discussed.The results show that the main hydrochemical types of groundwater in the Shule River Basin of Gansu Province are SO_(4)-Ca and SO_(4)-Na,and the main anions and cations of SO^(2-)_(4),Na+and Ca^(2+).The occurrence environment of groundwater in the research area is different,and the chemical composition of groundwater is affected by the dissolution of silicates;the water sample in the research area is moderately mineralized water,and the groundwater is affected by both rock differentiation and evaporation concentration.

关 键 词：地下水 水化学特征 水化学成因 疏勒河 

分 类 号：P641.3[天文地球—地质矿产勘探]