中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 1998, Vol. 17 ›› Issue (2): 90-94.

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折角急弯河段基本特征研究

周华君1, 邓桂香1   

  1. 1. 重庆交通学院 河海建筑工程系, 重庆 400074
  • 收稿日期:1997-05-26 修回日期:1997-06-26 出版日期:1998-06-20 发布日期:2016-07-13
  • 作者简介:周华君(1962-), 男, 副教授

Flow Features of Sharp Bend in Mountain River

Zhou Huajun1, Deng Guixiang1   

  1. 1. Department of River & Ocean Engineering, Chongqing Jiaotong Institute, Chongqing 400074, P. R. China
  • Received:1997-05-26 Revised:1997-06-26 Online:1998-06-20 Published:2016-07-13

摘要: 对山区河流折角急弯段的基本特征进行了研究. 根据能量和动量守恒原理, 导出了计算上游水位壅高和下游回流区最大宽度的理论关系式, 并用室内实验结果进行了验证. 研究表明, 水位壅高和最大回流宽度取决于弗罗德数和折弯角. 还提出了计算水位壅高和最大回流宽度的显式关系式.

关键词: 急弯, 水位壅高, 回流区

Abstract: Flow features of sharp bend in mountain river are investigated in this article. The theorectical relationships to predict the rise in the upstream flow depth and maximum width of backflow zone are derived on the basis of the energy and momentum principles. The proposed relationships are verified by the results of experiments for a right-angled sharp bend. It shows that the depth rise and maximum width of backflow zone depend on froude number and bend angle. And the explicit approximate relationships for calculating the depth rise and maximum width of backflow zone are presented.

Key words: sharp bend, depth rise, backflow zone

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