新疆昌吉州西部平原区地下水水质研究  

Hydro-Chemical Characteristics of Groundwater and Groundwater Quality Evaluation in Western Plains of Changji Hui Autonomous Prefecture,Xinjiang

作　　者：程凡[1] 周金龙[1,2] 高业新[2] 

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]中国地质科学院水文地质环境地质研究所,河北石家庄050061

出　　处：《人民黄河》2015年第8期86-89,共4页Yellow River

基　　金：中国地质调查项目(1212011220982);新疆维吾尔自治区水文学及水资源重点学科基金资助项目(xjswszyzdx k20101202)

摘　　要：为了查明新疆昌吉回族自治州西部平原区地下水的水质情况以及地下水化学特征，采用模糊综合评价法、数理统计法及AquaChem软件对研究区2011年21个监测井的地下水水样进行质量评价。结果表明：研究区地下水水质总体状况较好，水质达到Ⅲ级以上水质标准的监测井有19个，占90.5%；属于Ⅴ级水质标准的监测井有2个，均位于昌吉市，占9.5%；研究区地下水pH值为7.51-8.92，属于中性、弱碱性水；地下水化学组分中的优势阳离子是Ca^2＋和K^＋＋Na^＋，优势阴离子是HCO3^-和Cl^-；K^＋＋Na^＋、Ca^2＋、Mg^2＋、Cl^-、SO4^2-和TDS的变异系数均达到0.5以上，反映出它们在地下水中的含量变化很大，是随环境因素变化的敏感因子；研究区各离子相对含量较为复杂，多数水样碱土金属离子大于碱金属离子，水化学类型以HCO3·SO4-Ca、HCO3·SO4-Ca·Na为主。21 groundwater samples were analyzed comprehensively by using fuzzy comprehensive evaluation method,mathematical statistics and AquaChem software to research the groundwater quality and hydro-chemical characteristics of groundwater in the western plains of Changji Hui Autonomous Prefecture,Xinjiang. The results of groundwater quality assessment in 2011 show that the groundwater has good quality in general. There are 19 monitoring wells that the water quality is better than grade Ⅲ and the total proportion of grade Ⅰ,Ⅱ and Ⅲ is 90. 5%. There are two monitoring wells in Changji City that the water quality is gradeⅤwhich proportion is 9. 5% in the total monitoring wells. The pH value of groundwater is in the range of 7. 51 to 8. 92 in the study area,which can be recognized as neutral or weak alkalinity. The dominant cations are Ca^2＋,K^＋ ＋Na^＋,and the dominant anions are HCO3^- and Cl^- in chemical composition of groundwater. All the varia-tion coefficients of K^＋ ＋Na^＋,Ca^2＋,Mg^2＋,Cl^-,SO4^2- and TDS are over 0. 5,reflecting the great content variation in groundwater. Thus these are the sensitive factors to environmental change. Relative content of the ions is complex,and most of the water samples have more al-kaline ions than the alkali ions,resulting in the hydrochemical types of HCO3 ·SO4 -Ca and HCO3 ·SO4 -Ca·Na.

关 键 词：模糊综合评价法 地下水 水质评价 水化学类型 

分 类 号：TV211.12[水利工程—水文学及水资源] X523[环境科学与工程—环境工程]