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引用本文:王小松,李宝学,李阳,等.北京通州区第四系地下水水化学特征及成因分析[J].灌溉排水学报,2022,():-.
WANG Xiaosong,LI Baoxue,LI Yang,et al.北京通州区第四系地下水水化学特征及成因分析[J].灌溉排水学报,2022,():-.
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北京通州区第四系地下水水化学特征及成因分析
王小松, 李宝学, 李阳, 姜鑫, 姜臣祥, 高健
北京市地质工程勘察院
摘要:
【目的】深入研究通州区地下水水化学特征及其影响因素,为通州区地下水开发利用与保护提供重要科学支撑。【方法】本次研究利用2018年在通州区采集的45件300m深度内的地下水水质检测数据,通过Piper三线图、Gibbs图、因子分析和聚类分析等多元统计分析方法,分析了第四系地下水水化学特征及其影响因素。【结果】结果表明,通州区第四系浅层地下水水化学类型以HCO3-Ca.Mg型为主,深层地下水以HCO3-Na型为主。因子分析提取了4个公因子,累计方差占总方差的85.45%。聚类分析的结果与因子分析结果基本一致。【结论】因子1代表盐度因子,反映了碳酸盐、硅酸盐矿物风化过程;因子2代表铁锰污染因子,反映了富含铁锰元素的矿物的风化作用;因子3代表农业污染因子,反映了人类农业活动对地下水的影响;因子4代表氟化物污染因子,反映了含氟矿物的风化及阳离子交换反应。其中,人类农业活动主要影响通州北部宋庄、永顺一带;而碳酸盐、硅酸盐矿物风化作用,含铁锰元素矿物风化作用,含氟元素矿物风化作用及阳离子交换作用在通州全区普遍存在。
关键词:  水化学;影响因素;因子分析;聚类分析
DOI:
分类号:P641
基金项目:
Hydrochemical Characteristics and the Origin of Groundwater from Quaternary Aquifers in Tongzhou District, Beijing
WANG Xiaosong, LI Baoxue, LI Yang, JIANG Xin, JIANG Chenxiang, GAO Jian
Beijing Institute of Geological Prospecting Engineering,Beijing,100048
Abstract:
【Background】Groundwater is the crucial source of water supply in Tongzhou district, Beijing. Although groundwater of quaternary aquifers in the area has been intensively studied, research on characteristics and controlling factors of groundwater is limited.【Objective】The purpose of this paper is to deeply research characteristics and influence factors, providing essential scientific basics of exploitation and reservation of groundwater in Tongzhou district. 【Method】Given a total of 45 samples collected from within 300 meters depth of groundwater in Tongzhou district, the research analyzed the characteristics and influence factors of Quaternary groundwater with applying Piper diagram, Gibbs diagram, factor analysis and cluster analysis. 【Result】The result demonstrated that the groundwater was classified as HCO3-Ca.Mg water type in shallow groundwater and HCO3-Na water type in deep groundwater. Factor analysis extracted 4 common factors, and the cumulative variance accounted for 85.45% of the total variance. The results of cluster analysis were basically consistent with those of factor analysis.【Conclusion】Factor 1 represents the salinity factor, which is associated with weathering process of carbonate and silicate minerals. Factor 2 represents pollution factor of iron and manganese, which is associated with weathering process of minerals rich in iron and manganese. Factor 3 represents the agricultural pollution factor, which is associated with the impact of agricultural activities on groundwater. Factor 4 represents pollution factor of fluoride, which is associated with weathering process of minerals rich in fluorine and cation exchange. Moreover, Songzhuang and Yongshun locating to the north of Tongzhou district is the areas mostly affected by agricultural activities, while the weathering of carbonate minerals and silicate minerals, the weathering of minerals rich in iron and manganese, the weathering of minerals rich influoride as well as cation exchange are universal controlling factors in Tongzhou district.
Key words:  hydrochemistry; influence factor; factor analysis; cluster analysis