阆中市思依镇地下水水化学特征分析  

Hydrochemistry characteristics of groundwater in Siyi Town,Langzhong City

作　　者：孙厚云 张艳[1] 杨军[1] 

机构地区：[1]成都理工大学地质灾害与地质环境保护国家重点实验室/成都理工大学环境与土木工程学院,四川成都610059

出　　处：《地下水》2016年第1期25-29,共5页Ground water

基　　金：国家自然科学基金重点项目(40730634);四川省科技支撑计划项目(2011SZ0172)

摘　　要：阆中市思依镇地处四川红层缺水地区,居民饮用水水源主要为浅层地下水,分析总结地下水水化学特征对地区供水具有重要意义。运用Piper三线图、Durov图、Scholler图等水化学分析图解,因子分析、聚类分析统计学方法确定研究区地下水水化学类型、地下水主要离子组分的分布特征,总结研究区地下水水化学特征。研究表明,研究区水化学类型主要为HCO_3-Ca型、HCO_3+SO_4-Ca型、HCO_3-Ca+Mg型三类,占水样总量的94.34%;地下水多为硬水,地下水主要阳离子为Ca^(2+),主要阴离子为HCO_3-+CO_3^(2-);区内地下水化学形成过程中溶滤作用为主导作用。Siyi Towan,Langzhong city is located in Sichuan red layer where suffers water shortage while water source here is mainly shallow groundwater. The analysis about hydrochemistry characteristics of groundwater will play a important role in water supplying in this area. Here we analyzed the hydrochemistry characteristics of groundwater,Using Piper diagram,Durov diagram,Scholler diagram and Factor analysis and Cluster analysis method to determine the hydrochemistry type of groundwater and the distribution characteristics of main ion components of groundwater. The results showed that the hydrochemistry types can be classified into HCO_3- Ca type、HCO_3＋ SO_4-Ca type and HCO_3-Ca＋Mg type,which accounting for 94. 34 %of the total water sample. The Ca^（2＋） and HCO_3^-＋ CO_3^（2-） dominant among cations and anions. Leaching effect played a leading role in the process of the formation of the hydrochemistry in the area.

关 键 词：阆中市 地下水 水化学特征 因子分析 聚类分析 

分 类 号：P641.12[天文地球—地质矿产勘探]