Study on the hydrogeochemistry genesis of high fluorine shallow-bed groundwater in southwestern Shandong Province

In most region of southwest of Shandong province,the content of fluorine in shallow-bed groundwater is high.The maximum content is 6.0 7mg/L.According to data derived from the hydrogeochemical survey of the shallow-bed groundwater in Juye,Yuncheng,Jiaxiang during the exploration of Juye coalfield,taking into account the factors of topography,geomorphology, climate,lithology,the hydrogeochemical characteristic and the mechanism of genesis of the high fluorine shallow-bed groundwater was studied.It was pointed out that the enrichment of fluorine in shallow-bed groundwater have a close relation with pH,salinity and concentration of HCO₃^-,Ca²⁺,Mg²⁺,and the component concentration of Ca, Mg, F and the saturation index of some solid phases, such as Calcite, Aragonite, Anhydrite, Fluorite.The precaution and harnessing measure were put forward.