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研究报告

杨雪,胡俊良,刘劲松,罗朝晖,张煜,刘芳枝,赵震乾,李云安.湖南香花岭矿区地下水的水文地球化学特征及形成机制[J].环境科学学报,2018,38(7):2575-2585

Hydrogeochemical characteristics and formation mechanism of groundwater in Xianghualing Mining area, Hunan Province

摘要：湖南香花岭是我国有色、稀有金属的重要生产基地，其环境已经受到矿山活动的强烈影响，对矿区地下水的水化学特征研究对矿区污染分布调查和环境治理具有现实意义.本文通过主成分分析、相关性分析和离子比例系数分析对湖南香花岭地区的地下水的水化学组分进行了统计与分析，利用phreeqc模拟软件及重金属浓度分布图来探究研究区地下水水文地球化学特征形成机制.结果表明：人为活动特别是采矿活动和水岩相互作用一起影响了矿区地下水的化学成分；碳酸盐岩与非碳酸盐岩交界地区岩溶溶蚀作用表现更为明显；重金属元素经过碳酸盐岩分布区时受到拦截，不易进入地下水中.

Abstract：As the important mining area of nonferrous and rare metal, Xianghualing area, Hunan Province, suffers strong effect in environment. The study on hydrogeochemistry is useful for the investigation of mining pollution and remediation of environment. The principal component analysis, correlation analysis and ion ratio coefficient analysis are used to analyze the characteristics of water chemical components in groundwater, as well simulation software, PHREEQC, and distribution map of heavy metal are used to explore the formation of groundwater chemical components in the study area. The results show that the activity of human being, especially mining, affects the chemical components deeply, combing with natural water-rock interaction; the karstification is more obvious in the area of interface between carbonate rock and non-carbonate rock; the trap of carbonate rock plays an important role to keep the heavy metals out of groundwater.