高氟地下水在内蒙古赤峰地区的分布与形成初探

Preliminary study on formation and distribution of groundwater with high fluorine in Chifeng district, Inner Mongolia

为探明内蒙古赤峰地区高氟地下水的分布情况及形成机理,寻找生产、生活急需的低氟地下水,根据多年赤峰地区的水文钻探及水文地质普查资料,运用部分物探、水文钻探、水文地质普查、水化学及水质检测方法,初步探明赤峰地区高氟地下水主要分布在西拉沐沦河中、下游的北部,乌尔吉沐沦河的东部及老哈河两岸等区域,从水文地质方面基本阐明本地区高氟地下水形成的地貌条件、地层条件、气候条件、水化学特征及地下水中氟的来源,并查明该地区高氟地下水一般存在于潜水的上部,地下水中含氟量由上往下逐渐降低,深部含水层的地下水可供开采。

In order to investigate the distribution and formative mechanism of the high fluorine content in groundwater and to find groundwater with low fluorine content badly needed in production and life in Chifeng district of Inner Mongolia the distribution of high fluorine content in groundwater was analyzed by the partial geophysical,hydrologic drilling and hydrogeology quality detection. The results show that the high fluorine content in groundwater is mostly in the north of mid-downstream of Xilamulun River,the north of Wuerjimulun River and the banks of Laoha River. The morphologic,stratigraphic,climatic,and hydrochemical conditions of high fluorine content in groundwater in this district and the source of fluorine in the groundwater were explicated from hydrogeology. The results indicate that the high fluorine underground water generally lies under the dive,and the content of fluorine decreases from lower to upper and the deep water bearing bed can be exploited.