| 河道截流戗堤下游回流长度研究 |
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| 引用本文： | 李鹏,尹杨松,戴光清,杨庆,王海云.河道截流戗堤下游回流长度研究[J].水力发电,2007,33(9):89-90. |
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| 作者姓名： | 李鹏 尹杨松 戴光清 杨庆 王海云 |
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| 作者单位： | 1. 四川大学水力学与山区河流开发保护国家重点实验室,四川,成都,610065
2. 四川大学水力学与山区河流开发保护国家重点实验室,四川,成都,610065;大唐四川水电开发有限公司,四川,成都,610031 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 基于沿水深方向积分的平面二维水流动量方程,在采用合理的假定条件下,推导出含渗漏因素的戗堤下游回流区长度计算公式。研究结果表明,戗堤下游回流区长度不仅与坝长、水深、糙率、河宽缩窄比等因素有关,而且与戗堤自身的渗流量有关,回流区长度与渗漏量成反比。
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| 关 键 词： | 截流 双戗堤 渗漏量 回流长度 |
| 文章编号： | 0559-9342（2007）09-0089-02 |
| 修稿时间： | 2007-06-11 |
Study on the Length of Circulating Region of the River Closure Dike Downstream |
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| Li Peng,Yin Yangsong,Dai Guangqing,Yang Qing,Wang Haiyun.Study on the Length of Circulating Region of the River Closure Dike Downstream[J].Water Power,2007,33(9):89-90. |
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| Authors: | Li Peng Yin Yangsong Dai Guangqing Yang Qing Wang Haiyun |
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| Affiliation: | 1. State key Lab. of Hydraulics and Mountain River eng., Sichuan Univ., Chengdu Sichuan 610065; 2. Datang Sichuan Hydropower Development Co., Ltd., Chengdu Sichuan 610031 |
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| Abstract: | Based on 2D plane flow momentum equations along water depth direction integral and proper assumptions, the calculation formula for the length of backflow in the downstream of dike with seepage factor was derived. The research result showed that the length of backflow in the downstream of dike is not only related to dike length, water depth, roughness and river width contraction ratio but also is related to the seepage discharge of dike itself. The length of backflow is inversely proportional to the seepage discharge. |
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| Keywords: | river closure double-dike seepage discharge length of backflow |
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