张掖盆地龙首山山前高氟地下水的形成  

High-fluorine Groundwater Formation in Longshoushan Piedmont in Zhangye Basin

作　　者：王文祥[1] 何锦[1,2] 张梦南[1] 安永会[1] 李文鹏[3] 吴玺[1] 龚磊[1] 王晓燕[1] 

机构地区：[1]中国地质调查局水文地质环境地质调查中心,河北保定071051 [2]吉林大学环境与资源学院,吉林长春130026 [3]中国地质环境监测院,北京100081

出　　处：《现代地质》2017年第2期415-420,共6页Geoscience

基　　金：中国地质调查局项目"黑河流域重点地区水文地质调查"([2015]04-03-04-003)

摘　　要：氟是人体的必须元素之一,饮水中氟元素过量会导致地氟病。高氟地下水的形成机制一直是水文地球化学研究的一个热门话题。利用在张掖盆地开展1∶5万水文地质调查所获得的大量水位、水质资料,运用水化学和氘氧同位素方法,在较高精度水平上探讨了龙首山前高氟地下水的形成机制。研究结果表明,龙首山前地下水中的F-主要来源于龙首山含氟岩石,通过季节性洪水的方式补给到盆地的第四系含水层中,并与盆地上游来源的低氟地下水发生混合,使龙首山前地下水分为三个条带。Fluorine is one of essential elements of the human body, but excessive F can be harmful to human body. The formation mechanism of high fluorine groundwater has been a hot topic of hydrogeochemical research. The authors analyzed numerous groundwater level and quality data from 1 ： 50,000 hydrogeological survey in Zhangye Basin. By using hydrogeochemical and oxygen deuterium isotope methods, the authors discussed the formation mechanism of high-fluorine groundwater in Longshoushan piedmont in a high accuracy level. The resuits show that high-fluorine groundwater mainly origins from Longshoushan mountain fluorine-bearing rock. The high-fluorine surface water in Longshoushan mountain recharge into Quaternary aquifer in Zhangye Basin through seasonal floods and mixes with low-fluorine groundwater from upstream. Different recharge sources divided groundwater into three strips in Longshoushan piedmont.

关 键 词：张掖盆地 水文地质调查 高氟地下水 形成机制 溶滤作用 

分 类 号：P314.1[天文地球—固体地球物理学]