基于主成分分析的岩溶水水化学组成及影响因素研究——以贵州水城盆地为例

发布时间：2018-08-24 14:26

【摘要】：2015年9月对贵州水城盆地进行采样,共采集地下水样品12个,地表水样品10个,综合运用相关性分析、主成分分析等方法,并结合PHREEQC软件对矿物饱和度指数的计算结果,探讨了地下水、地表水水化学特征现状及其影响因素。研究结果表明:水城盆地岩溶水的水化学类型主要为HCO_3-Ca型,部分为SO_4-Ca型,地下水和地表水水化学组成主要受Ca~(2+)、K~++Na~+、HCO_3~-、SO_4~(2-)和Cl~-影响。研究区地下水和地表水中Ca~(2+)和HCO_3~-主要来源于碳酸盐岩地区的水-岩反应,水体中Cl~-、NO_3~-和Na~+主要来源于城镇生活污水、屠宰废水排放。地下水水质受水-岩反应影响,部分区域受到人类活动干扰明显;地表水水质在钟山区方向主要受沿途生活污水和农业面源污水汇入影响显著,而在水城县方向受煤矿企业排放废水影响较大。
[Abstract]:A total of 12 groundwater samples and 10 surface water samples were collected from Shuicheng Basin of Guizhou Province in September 2015. Correlation analysis, principal component analysis and PHREEQC software were used to calculate mineral saturation index. The present situation of chemical characteristics of groundwater and surface water and its influencing factors are discussed. The results show that the hydrochemical types of karst water in Shuicheng Basin are mainly HCO_3-Ca type, partly SO_4-Ca type, and the chemical composition of groundwater and surface water is mainly influenced by Ca~ (2) K ~ Na~ HCO3CO3- so _ 2- and Cl~-. Ca~ (2) and HCO_3~- in groundwater and surface water in the study area are mainly derived from water-rock reactions in carbonate rock areas, and Cl~-,NO_3~- and Na~ in water are mainly derived from municipal sewage and slaughterhouse wastewater discharge. The groundwater quality is affected by water-rock reaction, and some areas are disturbed by human activities, and the surface water quality is mainly affected by the inflow of domestic sewage and agricultural non-point source sewage in Zhongshan area. The direction of Shuicheng County is greatly affected by coal mine wastewater discharge.
【作者单位】：贵州大学资源与环境工程学院;国土资源部喀斯特环境与地质灾害重点实验室;
【基金】：贵州省地勘基金项目([2014]23) 国家自然科学基金委员会-贵州省人民政府喀斯特科学研究中心项目(U1612442) 黔科合LH字[2016]7456 黔教合KY字[2015]330
【分类号】：P641.3

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