| 脱节型河流与地下水相互作用研究进展 |
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| 引用本文： | 靳孟贵,鲜阳,刘延锋.脱节型河流与地下水相互作用研究进展[J].水科学进展,2017,28(1):149-160. |
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| 作者姓名： | 靳孟贵 鲜阳 刘延锋 |
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| 作者单位： | 1.中国地质大学盆地水文过程与湿地生态恢复学术创新基地, 湖北 武汉 430074; |
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| 基金项目： | 国家自然科学基金-新疆联合基金重点支持项目（U1403282） |
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| 摘 要： | 河流与地下水的脱节现象广泛存在于干旱及半干旱地区，二者间的相互作用已成为目前的研究热点。在简要分析河流与地下水关系的基础上，综述了河流与含水层之间由饱和连接，经过渡脱节，演化为完全脱节系统的物理过程及机理和脱节系统形成的必要条件。总结分析了最大渗漏量法、临界地下水位法、水位波动法等河流与地下水关系判别方法以及优缺点。讨论了非稳定演化过程中河水的入渗规律以及介质时空非均质性对脱节系统的影响。分析认为目前脱节形成机理仍不完全明晰；简便有效的判别方法还需进一步研究；介质时空非均质性对河水渗漏的影响是未来研究的重要方向。
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| 关 键 词： | 河流-地下水相互作用 脱节 非饱和带 非均质性 |
| 收稿时间： | 2016-05-06 |
Disconnected stream and groundwater interaction: a review |
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| JIN Menggui,XIAN Yang,LIU Yanfeng.Disconnected stream and groundwater interaction: a review[J].Advances in Water Science,2017,28(1):149-160. |
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| Authors: | JIN Menggui XIAN Yang LIU Yanfeng |
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| Institution: | 1.Laboratory of Basin Hydrology and Wetland Eco-Restoration, China University of Geosciences, Wuhan 430074, China;2.School of Environmental Studies, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | The phenomenon of a stream becoming disconnected from its underlying aquifer commonly occurs in arid and semiarid areas. The interaction between disconnected streams and aquifers is a popular research topic, and over the past few decades, new understanding and methods have emerged. In the present study, we first briefly analyzed the relationship between streams and aquifers. We then reviewed the physical processes and basic principles by which the stream-aquifer system changes from connected to transitional, and subsequently from transitional to fully disconnected, as well as the hydrogeological conditions required for disconnection to occur. For assessing the hydraulic connection between the stream and the aquifer, we synthesized field-based methods based on maximum infiltration rates, critical groundwater tables, or the fluctuations of stream water tables and groundwater tables. The advantages and disadvantages of these methods were analyzed. We also discussed the transient stream-aquifer exchange during disconnection and the effects of heterogeneity on disconnection. We conclude that the basic principles of disconnection are not fully understood. Convenient and reliable methods for assessing the connection status and the effects of heterogeneity on seepage from streams require further investigation in the future. |
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| Keywords: | interaction between stream and aquifer disconnection unsaturated zone heterogeneity |
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