山东高密高氟地下水成因模式与原位驱氟设想  

The formation and model of highly-concentrated fluoride groundwater and in-situ fluoride dispelling assumption in Gaomi City of Shandong Province

作　　者：高宗军[1] 张福存[2] 安永会[2] 冯建国[1] 王敏[1] 韩克[1] 

机构地区：[1]山东科技大学地球科学与工程学院,山东青岛266590 [2]中国地质调查局水文地质环境地质调查中心,河北保定071051

出　　处：《地学前缘》2014年第4期50-58,共9页Earth Science Frontiers

基　　金：中国地质调查局项目"地方病严重区地下水勘查与供水安全示范综合研究"(1212011220949)

摘　　要：山东省高密市地处胶莱盆地,南部为丘陵区,中部为缓坡区,北部为高氟地下水分布的平原区,属于盆地浅层地下水型饮水高氟地区,是全国氟中毒较为严重的地区之一。该区地势平坦,属暖温带大陆季风气候区,蒸发强度较高。晚更新世以来,该区较为平稳,地表水、地下水径流滞缓,地下水以降水补给、蒸发排泄为主,目前兼有少量的人工开采。高氟地下水赋存于白垩纪火山碎屑岩风化残积形成的第四系松散堆积物中,含水层以砂质亚黏土为主,在埋深0.5~1.0m处普遍发育钙质结核,俗称姜石。靠近北部河流,第四系底部多发育一层厚度渐大的含砾砂层。随着砂层的出现、增厚,地下水中的含氟量逐渐降低。据此总结了高密市高氟地下水的成因模式,为溶滤富集型与蒸发浓缩碱化型的复合模式。通过室内淋溶试验,结合当地的实际,提出＂原位驱氟＂的设想。Gaomi City of Shandong Province is located in the Jiao-lai Basin.The southern,central and northern parts of Gaomi are hills,depositional slope zone and plains,respectively.The northern plains own highlyconcentrated fluorine groundwater,which belongs to the shallow groundwater basin with highly-concentrated fluoride drinking water area.It is one of the most serious regions of fluorosis in China.The area is flat and situated on the warm temperate continental monsoon climate zone with strong evaporation.Since the late Pleistocene,the area has been relatively stable while surface water and groundwater have flowed slowly.The groundwater is supplied by precipitation while discharged via evaporation and a small amount of artificial exploitation at present.Highly-concentrated fluoride groundwater was stored in Quaternary loose sediments formed by weathering residual material of the Cretaceous volcano clastic rock.As an aquifer of sandy loam,there are calcareous nodules（so-called Jiang Shi）between 0.5mand 1.0min depth.Near the northern rivers,there is a gravel layer at the bottom of the Quaternary with growing thickness.With the emergence of sand and/or the increase of thickness,the fluorine content in groundwater decreases gradually.The authors summarize the mode for the origin of highly-concentrated fluorine groundwater in Gaomi City,i.e.,a composite mode of leaching enrichment type and evaporative concentrated alkalization type.By laboratory leaching test,and taking the local conditions into consideration,we proposed the idea of the＂in-situ fluoride dispelling＂.

关 键 词：山东高密 高氟地下水 成因模式 原位驱氟 

分 类 号：P641.12[天文地球—地质矿产勘探]