| 摘要: |
| 本文将国内外对琴键堰的流态特征、水力特性、影响水力特性的各重要参数、结构设计及施工等问题的研究成果及应用情况作了系统的归纳和详细的评述,并对琴键堰上游淤积、下游消能冲刷影响及在大坝河谷中修建琴键堰等问题作了讨论。迄今为止,所有已建的琴键堰均采用了物理比例模型进行研究,数值模拟能够以可接受的精度再现琴键堰下游的复杂流动条件,从而用于验证下游结构设计或研究能量消散。然而,因缺乏系统的试验研究,目前琴键堰下游流动条件的详细数据明显不知,影响了数值模型的开发和验证。因此,建议在该领域开展进一步的研究工作。 |
| 关键词: 琴键堰;流态特征;水力特性;超泄比;消能防冲 |
| DOI： |
| 分类号:TV65 |
| 基金项目: |
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| Status of Research and Application fo Piano key Weir in Hydraulic Engineering |
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huyazhuo1, shibing2
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1.Ocean University of China;2.College of Engineering, Ocean University of China
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| Abstract: |
| The research results and application of the flow characteristics, hydraulic characteristics, important parameters affecting the hydraulic characteristics, structural design and construction of the piano key weir, as well as the piano keys are systematically summarized and reviewed in this article. Problems such as siltation upstream of the weir, impact of energy dissipation and scouring downstream and construction of piano key weir in the dam valley are discussed. To date, all of the key weirs that have been built were studied using physical proportional models. Numerical simulations may be able to reproduce the complex flow conditions at its downstream of the key weir with acceptable accuracy, which can be used to verify downstream structural design or study energy dissipation. However, because of the lack of systematic experimental research and detailed data on the flow conditions at its downstream of the piano weir, its development and verification of suitable numerical models is hindered respectively. Therefore, it will be recommended to carry out further research in this field. |
| Key words: piano-key weir; flow characteristics; hydraulic characteristics; over-discharge ratio; energy dissipation and scouring |
