长江科学院院报 ›› 2013, Vol. 30 ›› Issue (9): 5-10.

• 江湖泥沙与治理 • 上一篇    下一篇

陆溪口汊道演变对界牌河段河势变化的响应分析

刘亚1a,1b,姚仕明1a,1b,李义天2   

  1. 1.长江科学院 a.水利部江湖治理与防洪重点实验室;b. 河流研究所,武汉 430010;
    2.武汉大学 水资源与水电工程科学国家重点实验室,武汉 430072
  • 收稿日期:2012-07-09 修回日期:2013-09-18 出版日期:2013-09-15 发布日期:2013-09-18
  • 作者简介:刘 亚(1987-),女,重庆市人,硕士研究生,主要从事水力学及河流动力学研究,(电话)027-84238117(电子信箱) lueyar@163.com。
  • 基金资助:
    “十二五”国家科技支撑计划课题(2012BAB04B03)

Evolution of Luxikou Braided Channel in Response to the Regime Variation of Jiepai Reach

LIU Ya1,2, YAO Shi-ming1,2, LI Yi-tian3   

  1. 1.Key Laboratory of River Regulation and Flood Control of MWR, Yangtze River Scientific Research Institute, Wuhan 430010, China;
    2.River Department, Yangtze River Scientific Research Institute,Wuhan 430010, China;
    3.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University, Wuhan 430072, China
  • Received:2012-07-09 Revised:2013-09-18 Published:2013-09-15 Online:2013-09-18

摘要: 进口节点的挑流作用在鹅头型汊道形成及演变进程中起着重要作用。以长江中下游陆溪口鹅头型分汊河道为例,通过总结其各个演变周期间的异同,分析了进口赤壁山节点在上游界牌河段不同河势条件下对陆溪口汊道演变的影响。结果表明:上游河势变化通过改变节点挑流作用强弱,影响汊道进口水流动力条件,从而最终影响到汊道演变周期进程。

关键词: 鹅头分汊河型, 河床演变, 节点作用

Abstract: Junction point at the inlet of river channel plays an important role in the formation and evolution of goose-head braided channels. With Luxikou goose-head braided channel in the middle and lower Yangtze River as an example, we summarized the differences among each evolution cycle. On the basis of this, we analyzed the effects of Chibishan, as a junction point, on the evolution of Luxikou braided channel in the presence of regime variation of Jiepai Reach in the upper stream. The result reveals that the upstream river regime changes the ski-jump role of junction point, affects the hydrodynamic conditions of the inlet, and finally influences the cyclical fluvial process.

Key words: goose-head braided channel, fluvial process, fixed node

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