摘要
为系统了解沙颖河流域地下水含水系统的补给源以及水化特征,在取样测试、现场监测的基础上,分别采用同位素、水文地球化学等方法,深入分析了沙颍河流域地下水含水系统特征。研究发现:沙颖河流域浅层地下水水化学类型自流域上游到下游呈HCO_3-Ca+Mg型向HCO_3+Cl-Ca+Mg型变化的趋势,中深层水以HCO_3-Na型为主,局部呈HCO_3+Cl型可能是浅层水混入的结果。采用铀不平衡方法识别地下水补给源,结果表明:浅层地下水补给源除降水外,还包括深层地下水的贡献;深层水来源包括大气降水、潜水和深层地下水3个补给源。各方法所得结论互相验证,研究结果可为流域内水循环模式研究、水污染防治等提供科学依据。
Based on a large number of data from sampling test and field monitoring,the characteristics of aquifer system of Shaying River basin was analyzed by various means,such as isotope and hydrogeochemistry.From upstream to downstream of the basin,the types of shallow groundwater changes from HCO 3-Ca+Mg to HCO 3+Cl-Ca+Mg,and the main type of intermediate and deep groundwater is HCO 3-Na,locally HCO 3+Cl possibly due to the infiltration of shallow water.Groundwater recharge source is identified by Uranium imbalance method and the results show that the recharge source of shallow groundwater is not only precipitation but also deeper groundwater.The recharge source of deep groundwater include precipitation,unconfined groundwater and deeper groundwater.The results of each method are mutually verified,which could provide scientific basis for the study of water circulation mode and water pollution control in the basin.
作者
王赫生
李燕
周锴锷
张庆
WANG Hesheng;LI Yan;ZHOU Kai’e;ZHANG Qing(Nanjing Center,China Geological Survey,Nanjing 210016,China;Eastern China Geoexploration and Development Bureau for Non-ferrous Metals,Jiangsu Province,Nanjing 210007,China)
出处
《人民长江》
北大核心
2018年第8期40-44,共5页
Yangtze River
基金
国家自然科学基金青年科学基金项目"南通地区浅层地下水中稀土元素分布特征及其示踪意义"(41302209)
中国地质调查局地质调查项目"淮河流域沂徐淮地区高标准农田区水文地质调查"(12120113102500)
关键词
铀不平衡
水化学
同位素
沙颍河
uranium imbalance
hydrogeochemistry
isotope
Shaying River
作者简介
王赫生,男,助理研究员,硕士,主要从事水文地质、环境地质方面的工作。E-mail:wanghedisheng@cumt.edu.cn
