干旱区研究 ›› 2021, Vol. 38 ›› Issue (2): 504-512.doi: 10.13866/j.azr.2021.02.22

• 水资源及其利用 • 上一篇    下一篇

伊犁河谷西北部地下水化学特征及成因分析

艾力哈木·艾克拉木1,2,3(),周金龙1,2,3(),张杰1,2,3,魏兴1,2,3,余东1,2,3,陈劲松1,2,3   

  1. 1.新疆农业大学水利与土木工程学院,新疆 乌鲁木齐 830052
    2.新疆水文水资源工程技术研究中心,新疆 乌鲁木齐 830052
    3.新疆水利工程安全与水灾害防治重点实验室,新疆 乌鲁木齐 830052
  • 收稿日期:2020-04-13 修回日期:2020-11-13 出版日期:2021-03-15 发布日期:2021-04-25
  • 通讯作者: 周金龙
  • 作者简介:艾力哈木·艾克拉木(1993-),男,硕士研究生,主要从事地下水水质演化研究. E-mail:2744192261@qq.com
  • 基金资助:
    国家自然科学基金资助项目(41662016);第三次新疆地下水资源调查与评价项目资助(2008-2009)

Chemical characteristics and genesis analysis of groundwater in northwest Yili River Valley

Ailihamu Aikelamu1,2,3(),ZHOU Jinlong1,2,3(),ZHANG Jie1,2,3,WEI Xing1,2,3,YU Dong1,2,3,CHEN Jinsong1,2,3   

  1. 1. College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, Xinjiang, China
    2. Xinjiang Hydrology and Water Resources Engineering Center, Urumqi 830052, Xinjiang, China
    3. Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Urumqi 830052, Xinjiang, China
  • Received:2020-04-13 Revised:2020-11-13 Online:2021-03-15 Published:2021-04-25
  • Contact: Jinlong ZHOU

摘要:

为探究新疆伊犁河谷西北部地下水化学特征及成因,运用数理统计以及Piper三线图、Gibbs图、离子比图等方法,对2018年伊犁河谷西北部地下水取样监测数据进行分析。结果表明:(1) 研究区地下水属于总硬度偏高的弱碱性水,地下水化学组分含量整体变异性不大,主要阳离子为Ca2+,主要阴离子为HCO3-。(2) 地下水水化学类型以HCO3-Ca、HCO3·SO4-Ca、HCO3·SO4-Ca·Mg、HCO3·SO4-Ca·Na和HCO3-Ca·Mg型为主。(3) 研究区地下水化学组分主要受岩石溶滤作用控制,蒸发-浓缩作用及阳离子交换作用对地下水化学组分有一定的贡献,个别地下水水样点可能受到人为活动的影响。(4) 地下水中的Na+、Cl-和SO42-主要来自岩盐、石膏等蒸发岩的溶解,Ca2+和Mg2+主要来自方解石、白云石和石膏等矿物溶解。

关键词: 伊犁河谷西北部, 地下水, 化学特征, Gibbs图, 离子比, 新疆

Abstract:

:To analyze groundwater genesis and chemical characteristics in Yili River Valley, Xinjiang China, we used descriptive statistical analysis, trilinear chart by Piper, Gibbs diagrams, ion ratio diagrams, and saturation index methods to systematically analyze 35 groundwater samples collected from June to October 2018. Groundwater in the study area is weakly alkaline, with a high total hardness level. The chemical components in groundwater showed little variation throughout the study area; Ca2+ was the main cation, and HCO3- the main anion. The hydrochemical characteristics in the study area can be divided into five groundwater types, HCO3-Ca, HCO3·SO4-Ca, HCO3·SO4-Ca·Mg, HCO3·SO4-Ca·Na, and HCO3-Ca·Mg. Although rock lixiviation is the main contributor to groundwater chemical composition, evaporation-concentration and cation exchange also contribute to the chemical composition of groundwater in the study area. Moreover, some groundwater samples might be affected by human activities. Na+, Cl-, and SO42- in groundwater are present due to the dissolution of rock salt, gypsum, and other evaporates; the dissolution of minerals such as calcite, dolomite, and gypsum contributes to Ca2+ and Mg2+ in groundwater.

Key words: northwest area of Yili River Valley, groundwater, hydrochemical characteristics, Gibbs diagram, ion ratio diagram, Xinjiang