新疆喀什噶尔河流域平原区地下水TDS分布及其成因  

Distribution characteristics and causes of groundwater total dissolved solids in the plain of the Kashgar River Basin,Xinjiang

作　　者：王红太 周金龙[1,2] 曾妍妍 张杰[1,2] 魏兴 陈劲松 WANG Hong-tai;ZHOU Jin-long;ZENG Yan-yan;ZHANG Jie;WEI Xing;CHEN Jin-song(College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,Xinjiang,China;Xinjiang Hydrology and Water Resources Engineering Research Center,Urumqi 830052,Xinjiang,China)

机构地区：[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

出　　处：《干旱区研究》2020年第4期830-838,共9页Arid Zone Research

基　　金：国家自然科学基金项目(41662016)资助。

摘　　要：基于新疆喀什噶尔河流域平原区2014年74组地下水水质检测结果,运用克里格插值法、Gibbs图、离子比值法和矿物饱和指数法,揭示地下水中TDS分布特征及其成因。结果表明:研究区潜水中TDS介于354.80~6505.00 mg·L^-1,平均值为1994.36 mg·L^-1,无盐水分布,总体表现为西高东低,水化学类型主要为SO4·Cl-Na·Ca·Mg、HCO3·SO4-Na·Ca·Mg和HCO3·SO4-Ca·Mg;承压水中的TDS普遍较高,介于214.00~14548.00 mg·L-1,平均值为2480.30 mg·L^-1,其分布特征总体表现为南高北低,水化学类型以SO4·Cl-Na·Ca·Mg、HCO3·SO4-Na·Ca·Mg及SO4-Na·Ca·Mg为主。控制本区地下水TDS的主要机制为自然地理因素、岩石风化作用、蒸发浓缩作用、矿物溶解作用及人类活动。Based on the results of 74 groups of groundwater quality detected in 2014 in the plain of the Kashgar River Basin,Xinjiang,the Kriging interpolation method,Gibbs diagram,ion ratio method,and mineral saturation index method were used to reveal the distribution characteristics and causes of total dissolved solids(TDS)in groundwater.The results showed that the TDS was between 354.80 and 6505.00 mg·L-1in phreatic groundwater,with an average value of 1994.36 mg·L-1.No salt groundwater was detected.The distribution pattern was high in the west and low in the east,and the hydrochemical types mainly contained SO4·Cl-Na·Ca·Mg,HCO3·SO4-Na·Ca·Mg,and HCO3·SO4-Ca·Mg.The TDS in confined groundwater was relatively high,between 214.00 and14548.00 mg·L-1,with an average value of 2480.30 mg·L-1.The distribution pattern of confined groundwater was generally high in the south and low in the north,and the hydrochemical types mainly contained SO4·Cl-Na·Ca·Mg,HCO3·SO4-Na·Ca·Mg,and SO4-Na·Ca·Mg.The main mechanisms controlling the TDS of groundwater were physical geography factors,rock weathering,evaporation and concentration,dissolution of minerals,and human activities.

关 键 词：地下水 TDS 蒸发浓缩 矿物溶解 喀什噶尔河流域 新疆 

分 类 号：X523[环境科学与工程—环境工程] P641[天文地球—地质矿产勘探]