鲁中南典型岩溶区岩溶水水化学特征及成因分析——以双村岩溶水系统为例

Hydrochemical Characteristics and Cause Analysis of Karst Water in Middle and South Shandong Province: Case of Shuangcui Karst Water System

通过对2013年9月在双村岩溶水区域采集测试的18组岩溶水化学资料进行分析,探讨了该区地下水的水化学特征,并利用R型因子分析法对影响该区岩溶水化学组分的3个主要因素进行了研究,分析结果表明:弱碱性地球化学背景下地下水对包气带的离子类质同象替代作用影响着岩溶水中Mg2+、K+、F-,人为污染因素控制着Cl-、Na+、NO3-、SO42-,岩溶水中的HCO3-、Ca2+、p H值受岩溶碳汇因素所影响。以上3种因子可以解释双村岩溶区岩溶水水化学特征87.103%的成因。

18 groups of Shuangcui karst water samples were collected in September, 2013. The hydrochemical characteristics of the samples was analyzed, and R factor analysis method was applied to investigate the dominant factor that impacted the chemical composition in this Karst area. According to the results, under the alkaleseent geochemical background, Mg2＋, K＋ and F- in the Karst water was mainly influenced by ion isomorphism in aeration zone from groundwater. Cl-, Na＋, NO3- and SO4^2- were related to man-made pollution while HCO3-, Ca2＋ and PH values were impacted by carbon sink. 87.103% of the formation cause of hydrochemical characteristics of the Karst water in Shuangcui water system could be explained by these 3 factors mention aboved.