基于因子分析方法的百泉泉域岩溶水污染源识别

Source Identification of Karst Water Pollution in Baiquan Spring Region Based on Factor Analysis Method

百泉泉域岩溶水是河北邢台地区的主要供水水源,近年来供需矛盾突出。为实现对百泉泉域岩溶水污染源的识别与管理,在研究区采集并测试岩溶水样品24组,综合数理统计、水化学和因子分析方法进行了研究。结果表明:研究区水化学类型以HCO_(3)-Ca·Mg和HCO_(3)·SO_(4)-Ca型为主,铁、总硬度、pH和硫酸盐有超标现象;因子分析共提取出4个公因子,F_(1)解析为元素富集和人类农业、生活活动,F_(2)代表其他含水层的混合作用,F_(3)代表矿山排水,F_(4)代表局部原生地质环境,四个因子贡献率分别为36.860%、20.396%、12.880%和10.295%。

Karst water in Baiquan Spring region is the main water source in Xingtai city of Hebei Province,and the contradiction between supply and demand is prominent in recent years.In order to realize the identification and management of karst water pollution sources in Baiquan Spring region,24 groups of karst water samples were collected and tested,and the methods of mathematical statistics,hydrochemistry,and factor analysis were used.The results show that the main hydrochemical types of karst water are HCO_(3)-Ca·Mg and HCO_(3)·SO_(4)-Ca;the iron,total hardness,pH,and sulfate of some water samples exceed the standard.Four common factors are extracted from factor analysis:F^(1) is interpreted as element migration-enrichment and human agricultural and living activities,F_(2) represents the mixed effects from other aquifers,F_(3) represents mine drainage,and F_(4) represents local primary geological conditions.The contribution rates of the four factors are 36.860%,20.396%,12.880%,and 10.295%,respectively.