长江上游边滩作用下的河道最大冲刷深度
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作者:
作者单位:

1.重庆交通大学河海学院 重庆;2.重庆交通大学国家内河航道整治工程研究中心 重庆

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中图分类号:

TV217

基金项目:

国家重点研发计划资助项目(2018YFB1600400);重庆市教委科学技术研究项目(编号:KJQN-201900745);重庆市自然科学基金资助项目(cstc2020jcyj-bshX0043)


Maximum scouring depth of river channel under the action of edge beach in the upper reaches of the Yangtze River
Author:
Affiliation:

Hehai college, Chongqing Jiaotong University, Chongqing

Fund Project:

Supported by national key R & D plan (2018YFB1600400); Science and technology research project of Chongqing Education Commission (No.: KJQN-201900745); Project supported by Chongqing Natural Science Foundation (cstc2020jcyj-bshx0043)

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    摘要:

    摘 要:长江上游边滩多为卵石推移质边滩,通过查阅长江上游宜宾至重庆段的航道图册,利用模型相似比尺设计了不同临水面坡度的边滩,并采用理论分析和水槽试验结合的方法,研究了两种不同形态的边滩作用下河道的最大冲刷深度。研究发现:同一滩体的相同部位,当水深等水力因子相同时,冲刷深度随着试验流量的增大而增大;水深、流量等相同水力条件下,滩体的临水面坡度越大,对应的冲刷深度越大。本文建立并拟合了长江上游边滩作用下顺直段的最大冲刷深度计算公式。研究结果对于今后研究交错边滩的冲淤变化机理和维护航道安全通行具有重要意义。

    Abstract:

    [Abstract] The upper reaches of the Yangtze River are mostly pebble bed load side beaches. By consulting the channel Atlas of Yibin Chongqing section of the upper reaches of the Yangtze River, the side beaches with different water surface slopes are designed by using the model similarity scale, and the maximum scouring depth of the river channel under the action of two different forms of side beaches is studied by using the method of theoretical analysis and flume test. It is found that in the same part of the same beach, when the hydraulic factors such as water depth are the same, the scouring depth increases with the increase of the test discharge; Under the same hydraulic conditions such as water depth and flow, the greater the slope of the adjacent surface of the beach, the greater the corresponding scouring depth. This paper establishes and fits the calculation formula of the maximum scouring depth of the straight section under the action of the edge beach in the upper reaches of the Yangtze River. The research results are of great significance for studying the scouring and silting change mechanism of staggered beach and maintaining the safe passage of channel in the future.

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引用本文

陈雅飞,王平义,王梅力,等. 长江上游边滩作用下的河道最大冲刷深度[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-11-19
  • 最后修改日期:2022-03-30
  • 录用日期:2022-04-30
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