蒲阳河流域地下水水化学及同位素特征

发布时间：2018-10-16 14:18

【摘要】：保定西部山前地区位于太行山及华北平原交界带,为缓解极端气候灾害对生产生活的影响,维持地下水资源的可持续开发利用,开展相关的地下水水化学及同位素特征研究。研究区地下水化学类型以HCO_3—Ca·Mg、HCO_3·SO_4—Ca·Mg及SO_4·HCO_3—Ca·Mg为主,区内地下水主要来源于大气降水,流域内地表水补给地下水;地下水中化学成分为Ca~(2+)、Mg~(2+)、HCO_3~-、SO_4~(2-),主要来源于岩石风化作用,同时受到人类活动的影响,地下水中硝酸盐含量明显升高;由于受到褶皱构造的控制,流域的上游及平原区均出现年龄大于60年的地下水,多数岩溶水年龄较复杂,从现代水到大于60年的水均有分布。研究成果为流域内水资源的合理开发利用提供建议,区内岩溶地下水的开发将在一定程度上缓解极端天气的影响。
[Abstract]:The western mountain front area of Baoding is located at the junction zone of Taihang Mountain and North China Plain. In order to mitigate the impact of extreme climatic disasters on production and life and to maintain the sustainable development and utilization of groundwater resources, the study on the chemical and isotopic characteristics of groundwater is carried out. The chemical types of groundwater in the study area are mainly HCO_3-Ca Mg,HCO_3 SO_4-Ca Mg and SO_4 HCO_3-Ca Mg. The groundwater in the study area is mainly derived from precipitation and recharge of groundwater by surface water in the basin, and the chemical composition of the groundwater is Ca~ (2), Mg~ (2), HCO_3~-,SO_4~ (2-), which are mainly derived from the weathering of rocks. At the same time, under the influence of human activities, the content of nitrate in groundwater is obviously increased, because of the control of fold structure, groundwater of more than 60 years old appears in the upper reaches and plain areas of the basin, most of the karst water ages are more complex. From modern water to more than 60 years of water distribution. The research results provide suggestions for the rational development and utilization of water resources in the basin, and the development of karst groundwater in the region will alleviate the influence of extreme weather to some extent.
【作者单位】：中国地质调查局水文地质环境地质调查中心;河北地质大学水资源与环境学院;河北省水资源可持续利用与开发实验室;
【基金】：中国地质调查局地质大调查项目(“沂蒙山革命老区1∶5万水文地质调查”(121201012000150003)) 河北省水利科研项目(河北唐河流域河流水质演化及物源特征研究,石津灌区水资源优化配置)
【分类号】：P641.3

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