| 河湾水流动力轴线变化与切滩撇弯关系研究 |
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| 引用本文： | 覃莲超,余明辉,谈广鸣,许多,向浩. 河湾水流动力轴线变化与切滩撇弯关系研究[J]. 水动力学研究与进展(A辑), 2009, 24(1) |
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| 作者姓名： | 覃莲超 余明辉 谈广鸣 许多 向浩 |
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| 作者单位： | 武汉大学水资源与水电工程科学国家重点实验室,湖北武汉,430072;长江水利委员会,湖北武汉,430010 |
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| 基金项目： | 国家重点基础研究发展规划(973计划),国家自然科学基金 |
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| 摘 要： | 在分析汉江中下游以及荆江河湾实测资料的基础上,阐述了河湾水流动力轴线弯曲半径变化与切滩撇弯之间的关系,大量相关实测资料说明当河湾的来水条件和河湾形态发生变化时,会造成河势与水流动力轴线走向发生变化,从而引起切滩撇弯的发生.用多元线性回归的方法拟合出河湾水流动力轴线弯曲半径的数学表达式,并提出了用水流动力轴线弯曲半径与河湾弯曲半径的相对值来判断切滩撇弯发生机率的方法.研究成果对于治河防洪工程的规划设计有一定参考价值.
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| 关 键 词： | 切滩撇弯 水流动力轴线 弯曲半径 |
Discussion on the relation between the change of the flow dynamic axis and the bend bypassing and shoal cutting in the bend river course |
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| QIN Lian-chao,YU Ming-hui,TAN Guang-ming,XU Duo,XIANG Hao. Discussion on the relation between the change of the flow dynamic axis and the bend bypassing and shoal cutting in the bend river course[J]. Chinese Journal of Hydrodynamics, 2009, 24(1) |
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| Authors: | QIN Lian-chao YU Ming-hui TAN Guang-ming XU Duo XIANG Hao |
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| Affiliation: | 1.State Key Laboratory of Water Resources and Hydropower Engineering Sciences;Wuhan University;Wuhan 430072;China;2.Changjiang Water Resources Commission;Wuhan 430010;China |
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| Abstract: | Based on field data of the river bend in middle and lower Hanjiang River and in Jingjiang River,the relation between the variation of bend radius of flow dynamic axis and bend bypassing and shoal cutting is expounded.A great number of field data show that if income flow and bend conformation change,the river regime and the direction of flow dynamic axis will change as well,then bend bypassing and shoal cutting will occur.A mathematical expression about the radius of flow dynamic axis was obtained by multipl... |
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| Keywords: | bend bypassing and shoal cutting the flow dynamic axis bend radius |
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