新疆库拜地区地下水化学特征及其来源识别  

Chemical characteristics and source identification of groundwater in Kubai area,Xinjiang

作　　者：李祥 李全 杨晓晨 杨慆 甘乔侨 马婷[2] 高歌 LI Xiang;LI Quan;YANG Xiao-chen;YANG Tao;GAN Qiao-qiao;MA Ting;GAO Ge(Baicheng County unconventional energy Technology Development Co.,Ltd,Baicheng 842300,Xinjiang;Key Laboratory of Oil and Gas Fine Chemicals,Ministry of Education and Xinjiang Uygur Autonomous Region,School of Chemical Engineering and Technology,Xinjiang University,Urumqi 830017,Xinjiang)

机构地区：[1]拜城县非常规能源科技开发有限公司,新疆拜城842300 [2]新疆维吾尔自治区石油天然气精细化工教育部重点实验室/新疆大学化工学院,新疆乌鲁木齐830017

出　　处：《地下水》2025年第1期22-25,共4页Ground water

基　　金：新疆维吾尔自治区自然科学基金资助项目(2022D01F93);新疆维吾尔自治区第一批“天山英才-优秀工程师”资助项目。

摘　　要：为探究新疆库拜地区地下水化学特征及来源,本文基于该区30个地下水采样点,采用Shukarev分类、Piper图、Gibbs图和离子比例系数等方法对其进行分析。研究区内地下水溶解性总固体(TDS)与阳离子K^(+)+Na^(+)和阴离子Cl^(-)的质量浓度有较强的相关性,而与Ca^(2+)的质量浓度呈极低的线性关系,反映出该区地下水主要受蒸发浓缩的影响,其中以蒸发盐岩的溶解作用为主。研究区内地下水水化学类型为HCO_(3)·Cl-Na·Ca·Mg和HCO_(3)·Cl-Ca型,这2种水化学类型各占研究区的50%,反映出该区地下水主要受蒸发结晶和基底褶皱运动等因素影响。蒸发岩溶解和岩石溶蚀、人类活动和强烈的阳离子交换都影响着该区地下水化学特征。研究结果可为该区地下水开发利用及保护提供科学依据,也为该地区地质结构的演化提供了旁证。The chemical characteristics and material sources of groundwater were analyzed based on 30 groundwater sample in the Kubai,Xinjiang,using Shukarev classification,Piper′s diagrams,Gibbs′diagrams,and ionic scaling coefficient methods,by carrying out work such as drilling and hydrological borehole pumping tests and combining with previous hydrogeological data.The results show that the average pH value of groundwater in the study area is 9.14,which is recognized as a weakly alkaline water;and the average TH value is 308.89 mg/L,which is dominated by hard water;the relationship between the mass concentrations of anions is Cl^(-)>HCO_(3)^(-)>SO_(4)^(2-),and the cations is K^(+)+Na^(+)>Ca^(2+)>Mg^(2+).Through the correlation calculation and regression analysis,TDS in this area is highly correlated with the mass concentration of cations K^(+)+Na^(+)and the anions Cl^(-),and weakly correlated with the mass concentration of Ca^(2+),reflecting that the groundwater in this area is mainly affected by evapotranspiration and concentration,which is dominated by the dissolution of evaporated saline rocks.According to Shukarev's classification,Piper illustration and Gibbs'diagram,the hydrochemical types of groundwater in the study area are HCO_(3)·Cl-Na·Ca·Mg and HCO_(3)·Cl-Ca types,and each of these two hydrochemical types account for 50% of the study area,reflecting that the groundwater in the area is mainly influenced by factors such as evaporation crystallization and basement fold movement.The results of the ion proportionality coefficient method show that the composition of groundwater in the study area is influenced by evaporite dissolution and rock dissolution,and that cation exchange has little effect on it.Evaporite dissolution and rock dissolution,human activities and strong cation exchange all influence the evolution of groundwater quality.The results of the study can provide a scientific basis for the development,utilization and protection of groundwater in the area,as well as a circumstantial evidence for the

关 键 词：库拜地区 地下水 水化学特征 Piper三线图 TDS Shukarev分类法 

分 类 号：P641.12[天文地球—地质矿产勘探]