济南岩溶泉域泉群区水化学与环境同位素研究

发布时间：2018-06-14 16:12

本文选题：水化学分析 + 环境同位素　；参考：《地质学报》2017年07期

【摘要】：本文通过对济南岩溶泉域排泄区地下水样品的分析,采用主要离子(Cl、NO_3、Mg、Ca、HCO_3、SO_4)、微量元素(Br、Ba、Sr)、氢氧同位素(~2H和~(18)O)、硫同位素(~(34)S)等示踪因子的综合研究方法,结合岩溶泉域实际水文地质条件,揭示了济南泉水的水文地球化学特征、枯丰期水化学动态和环境同位素特征,确定了泉水在枯、丰水期不同的补给来源及补给途径。研究显示,泉群区出流的泉水可以分为三组,黑虎泉出流的路径是经奥陶系灰岩直接出流,趵突泉是经奥陶系灰岩与第四系沉积层出流地表,而五龙潭泉、珍珠泉和53号井则是在灰岩和侵入岩体的接触地带及第四系沉积层较薄弱处涌出地表;在丰水期地下水是混合补给,包括来自奥陶系岩溶水直接补给和硅酸盐岩裂隙水的间接补给,而在枯水期地下水主要由奥陶系岩溶水直接补给;泉群区地下水中的S主要来源于燃煤,而且有不断增加的趋势。
[Abstract]:Based on the analysis of groundwater samples in the discharge area of karst springs in Jinan, a comprehensive study method of tracer factors, such as the main ion ClNo3 Mg-CaHCO3HCO3SO4, the trace elements Br-Ba-Sr-, the hydrogen and oxygen isotopes, the sulfur isotopes, and the hydrogeological conditions of the karst springs, are used in this paper, and the actual hydrogeological conditions of the karst springs are combined with the analysis of the tracer factors such as hydrogen and oxygen isotopes, and sulfur isotopes. The hydrogeochemical characteristics, hydrochemical dynamics and environmental isotopic characteristics of Jinan spring are revealed, and the different recharge sources and ways of spring water in dry and high water periods are determined. The study shows that the spring water flowing out of the spring group can be divided into three groups. The route of the outflow of the Heihu Spring is through the Ordovician limestone, the Baotu Spring is the surface through the Ordovician limestone and the Quaternary sedimentary layer, and the Wulongtan Spring. Pearl Springs and well 53 gushed out of the surface in the contact zone of limestone and intrusive rock mass and the weaker Quaternary sedimentary layer, and the groundwater was recharged in high water periods. It includes direct recharge of Ordovician karst water and indirect recharge of fissure water of silicate rock, while groundwater is mainly recharged by Ordovician karst water during dry season, and S of groundwater in spring area mainly comes from coal combustion. And there is a growing trend.
【作者单位】：中国地质环境监测院;山东省地质环境监测总站;
【基金】：国土部公益性行业专项(编号201411074) 中央财政专项(编号1210800000022)联合资助成果
【分类号】：P641.3

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