玉溪研和浅层地下水化学特征及成因分析  

Chemical Characteristics and Genesis Analysis of Shallow Groundwater in Yanhe Town,Yuxi City

作　　者：马宇琪 杨加明 徐世光 MA Yuqi;YANG Jiaming;XU Shiguang(Faculty of Public Security and Emergency Management,Kunming University of Science and Technology,Kunming 650093,China;Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Geological and Mineral Engineering Survey Group Co.,Ltd.,Kunming 650011,China)

机构地区：[1]昆明理工大学公共安全与应急管理学院,云南昆明650093 [2]昆明理工大学国土资源工程学院,云南昆明650093 [3]云南地矿工程勘察集团有限公司,云南昆明650011

出　　处：《昆明理工大学学报（自然科学版）》2024年第2期129-139,共11页Journal of Kunming University of Science and Technology(Natural Science)

摘　　要：云南省玉溪市研和属于工业园区,地下水受到不同程度的污染.根据采集的43组地下水样品试验数据,利用舒卡列夫分类结合Piper三线图、Gibbs图、Gaillrdet水化学模型和相关性分析、离子比例系数等对研究区水化学类型、组成特征和控制因素进行分析.结果显示:该区域地下水偏弱碱性,水中阳离子的形成主要受水-岩作用和蒸发作用两方面因素影响,阴离子的形成主要受水-岩作用影响;浅层地下水中Ca^(2+)是含量最高的阳离子,HCO_(3)^(-)是含量最高的阴离子;地下水中主要组分超标率最高为镉,超标率为64.6%;研究区水化学类型主要以HCO_(3)-Ca·Mg型为主;研究区地下水化学组分主要由地区的硅酸盐岩和碳酸盐岩的溶解形成.Yanhe Town is an industrial area in Yuxi City,Yunnan Province.The groundwater in the study area is polluted to varying degrees.Based on the experimental data of 43 sets of groundwater samples collected,the hydrochemical types,composition characteristics,and controlling factors of the study area were analyzed using Schoeller classification combined with Piper trilinear diagram,Gibbs diagram,Gaillrdet hydrochemical model,correlation analysis,and ion ratio coefficients.The results showed that the region is slightly alkaline,and the formation of groundwater cations is mainly influenced by water-rock interaction and evaporation.The formation of anions is mainly influenced by water-rock interaction.In shallow groundwater,Ca ^(2+)is the most abundant cation,while HCO_(3)^(-) is the most abundant anion.The highest exceedance rate of major components in groundwater is cadmium,with a rate of 64.6%.The dominant hydrochemical type in the study area is HCO_(3)-Ca·Mg.The main reason for the formation of this hydrochemical type is the dissolution of silicate rocks and carbonate rocks in this area.

关 键 词：地下水 水化学特征 控制因素 超标率 浅层地下水 

分 类 号：P641[天文地球—地质矿产勘探]