淮南巨厚新生界多含水层组地下水系统特征

Characteristics of multiple aquifers groundwater system in hugely thick Cenozoic stratum in Huainan

新生界地下水是淮南潘谢矿区的重要水源。为了查清新生界内的地下水系统,文章根据现有勘探资料,采用系统聚类和主成分分析方法对研究区新生界不同取样深度的地下水水化学数据进行地下水系统的分析及划分。分析结果表明:新生界地下水系统存在浅部循环系统和深部滞留系统,分界线在深度100m左右;新生界中含和下含属于深部滞留系统,且存在明显的盐化现象;煤矿开采导致浅部循环系统和深部滞留系统产生水力联系。

Cenozoic groundwater is important water resources in Panxie mine area in Huainaru In order to find out the new division of the groundwater system, the Cenozoic water samples with different depth were ana- lyzed by using hierarchical duster analysis and principal components analysis based on the existing exploration data. It is found that there are shallow circulating system and deep retention system with an obvious boundary at the depth about 100 m. The middle and bottom aquifers of Cenozoic belong to deep retention system, and have the obvious phenomena of salinization. There is hydraulic connection between shallow circulating system and deep retention system because of coal mining.