清徐县西边山洪积扇地区地下水水化学特征及水质评价  

Groundwater Hydrochemical Characteristics and Water Quality Evaluation of Mountain Flood Fans in the West of Qingxu

作　　者：石小虎 苏沛兰[1] SHI Xiao-hu;SU Pei-lan(College of Water Resources Science and Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030024,China)

机构地区：[1]太原理工大学水利科学与工程学院,山西太原030024

出　　处：《地下水》2020年第1期5-8,23,共5页Ground water

基　　金：山西省自然基金(201701D221193);山西省重大水利技术项目研究与推广项目(201823)。

摘　　要：为探明太原市清徐县西边山洪积扇地区地下水水化学特征及成因,采用统计分析法和模糊数学方法对清徐县西边山洪积扇地区12个地下水水样点的水化学指标进行了分析和综合评价。结果表明:研究区地下水取样点的水化学评价指标中,总硬度和NO3-含量浓度较高,其平均值属于Ⅴ类水极限值,SO42-含量和TDS含量浓度较低,其平均值属于Ⅱ类和Ⅲ类水质;采用模糊数学方法对地下水水质进行综合评价时表明研究区58. 4%的地下水属于Ⅱ类和Ⅲ类水质,可以直接使用,41. 6%的地下水属于Ⅳ类和Ⅴ类水质,需进一步处理后才能使用;对研究区地下水水质成因研究时表明研究区地下水类型主要为HCO3·SO4-Na·Mg·Ca类型,属于碳酸盐富集区,研究区内碳酸盐矿物溶解作用是控制地下水主要离子组分的主要因素。In order to find out the groundwater hydrochemical characteristics and genesis of the mountain alluvial fan in the west of Qingxu,Taiyuan City,The statistical analysis and fuzzy mathematics method were used to analyze and comprehensively evaluate the water chemistry indexes of 12 groundwater samples in the study area. The results show that the total hardness and NO3-content concentration are higher in the water chemistry evaluation index of the groundwater sampling point in the study area,and the average value belongs to the Class Ⅴ;the SO42- content and TDS content concentration are lower,and the average value belongs to Class Ⅱ and Class Ⅲ water quality;The comprehensive evaluation of groundwater quality by fuzzy mathematics indicates that 58. 4 % of groundwater in the study area belongs to Class Ⅱ and Class Ⅲ water quality and can be used directly,and 41. 6 % of groundwater belongs to Class Ⅳ and Class Ⅴ water quality,which can be used after further processing;the study on the cause of groundwater quality in the study area indicates that the groundwater type in the study area is mainly HCO3·SO4-Na·Mg·Ca type,which belongs to the carbonate enrichment area,and The dissolution of carbonate minerals in the study area is the main factor controlling the main ionic components of groundwater.

关 键 词：地下水 水化学特征 水质评价 模糊数学评价 

分 类 号：P641.12[天文地球—地质矿产勘探]