昆明吴家营岩溶水系统边界的水文地球化学分析

西南岩溶水系统边界条件复杂,其中水头隔水边界在水动力条件改变的情况下具有不稳定的隔水特性。文章以昆明吴家营岩溶地下水系统为例,通过水化学组分动态序列图解法、数理统计法及水文地球化学模拟等方法对研究区边界特性进行了研究。研究结果表明该岩溶水系统水动力条件丰水季优于枯水季,并存在与边界外发生水力联系的越流通道;丰水季时岩溶槽谷区地下水在高水力梯度的驱动下向下绕过玄武岩隔水层,通过下部阳新灰岩对系统内岩溶水进行越流补给,枯水季受深部滞流阻水影响,越流补给现象不明显;由此得出此类水头边界的隔水特性会随水动力条件的改变而具有动态响应特征。研究成果对当地岩溶水资源量的评价和合理开发利用提供科学依据。...

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Bibliographic Details
Published in中国岩溶 Vol. 34; no. 5; pp. 438 - 444
Main Author 于磊磊 漆继红 许模
Format Journal Article
LanguageChinese
Published 成都理工大学 地质灾害防治与地质环境保护国家重点实验室,四川 成都,610059 2015
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ISSN1001-4810
DOI10.11932/karst20150503

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Summary:西南岩溶水系统边界条件复杂,其中水头隔水边界在水动力条件改变的情况下具有不稳定的隔水特性。文章以昆明吴家营岩溶地下水系统为例,通过水化学组分动态序列图解法、数理统计法及水文地球化学模拟等方法对研究区边界特性进行了研究。研究结果表明该岩溶水系统水动力条件丰水季优于枯水季,并存在与边界外发生水力联系的越流通道;丰水季时岩溶槽谷区地下水在高水力梯度的驱动下向下绕过玄武岩隔水层,通过下部阳新灰岩对系统内岩溶水进行越流补给,枯水季受深部滞流阻水影响,越流补给现象不明显;由此得出此类水头边界的隔水特性会随水动力条件的改变而具有动态响应特征。研究成果对当地岩溶水资源量的评价和合理开发利用提供科学依据。
Bibliography:hydrogeochemistry, karst groundwater system, Hydrogeological boundaries, leakage
YU Lei-lei, QI Ji-hong, XU Mo (State Key Laboratory of Geohazard Prevention and Geoenvironment Protection ,Chengdu University of Technology, Chengdu, Sichuan 610059, China)
45-1157/P
In Southwest China, the hydaulic boundaries of the karst groundwater system are very complex, partly because the water-resisting property of the constant head (Type Boundary) is unstable. In this paper, Wujiaying karst groundwater system in Kunming is studied. Three methods have been used to study the hydrogeochemistry and hydrogeological boundaries, i. e. dynamic groundwater chemical analysis, mathematical statistics and hydrogeochemical modeling. The results confirm that the groundwater flow in this area is more active and may link to other groundwater system in wet season. Due to the high hydraulic head difference, groundwater in the karst valley area can be driven to pass through the karst aquifer under the confining bed and recharge the Wujiaying k
ISSN:1001-4810
DOI:10.11932/karst20150503