新疆伊犁河谷地下水化学特征及其形成作用

发布时间：2018-11-25 18:09

【摘要】：在野外水文地质调查工作基础上,对伊犁河谷潜水进行取样分析测试,采用Arc GIS空间分析功能,piper三线图,Gibbs图等方法,重点对两条典型剖面的地下水化学特征及其成因进行了分析。结果表明:1)区域水化学组分阳离子以Ca~(2+)、Mg~(2+)为主,阴离子以HCO_3-、SO_42-为主。水化学类型以HCO_3-Ca、HCO_3-Ca·Mg、HCO_3·SO_4-Ca以及HCO_3·SO_4-Ca·Mg型为主,TDS以1g/L为主,水质优良。2)"1号剖面"主要阴、阳离子自北向南呈现同步变化规律,自北向南水化学类型依次为HCO_3-Ca、HCO_3·SO_4-Ca·Mg、HCO_3·SO_4-Ca·Na。"2号剖面"由东向西水化学类型依次为HCO_3-Ca·Mg、HCO_3·SO_4-Ca·Mg、HCO_3·SO_4-Ca·Na。地下水化学类型与所处地貌单元紧密相关。3)研究区地下水水化学特征的形成与岩石溶虑作用、蒸发浓缩作用、混合作用等密不可分,但以岩石溶虑作用为主。人类活动对研究区地下水化学组分产生的影响较小。
[Abstract]:On the basis of hydrogeological survey in the field, sampling and testing of diving in Yili River Valley are carried out. The methods of Arc GIS spatial analysis, piper three-line map and Gibbs diagram are adopted. The chemical characteristics and origin of groundwater in two typical sections are analyzed. The results showed that: 1) Ca~ (2), Mg~ (2) and HCO_3-,SO_42- were the main chemical components of water in the region. The main types of hydrochemistry are HCO_3-Ca,HCO_3-Ca Mg,HCO_3 SO_4-Ca and HCO_3 SO_4-Ca Mg, the TDS is 1g/L, and the water quality is good. 2) "No.1 profile" is the main shade. The variation of cations from north to south is synchronous, and the chemical type of water from north to south is HCO_3-Ca,HCO_3 SO_4-Ca Mg,. The chemical type of HCO_3 SO_4-Ca Na. "2" is HCO_3-Ca Mg,HCO_3 SO_4-Ca Na. from east to west. The chemical types of groundwater are closely related to the geomorphological units in the study area. 3) the formation of hydrochemical characteristics of groundwater in the study area is closely related to rock dissolution, evaporation and concentration, mixing and so on, but it is dominated by rock dissolving. Human activities have little effect on the chemical composition of groundwater in the study area.
【作者单位】：中国地质调查局国土资源实物地质资料中心;长安大学环境科学与工程学院;中国地质调查局西安地质调查中心;
【基金】：中国地质调查项目"新疆伊犁河谷地下水资源及环境问题调查与评价(1212011220972) 新疆伊犁河谷霍城-霍尔果斯口岸水文地质调查(12120115046401)"资助
【分类号】：P641.3

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