| 掺气分流墩阶梯溢流坝面水力特性试验研究 |
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| 引用本文： | 杨庆,戴光,刘荣丽.掺气分流墩阶梯溢流坝面水力特性试验研究[J].四川水力发电,2002,21(1):94-96. |
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| 作者姓名： | 杨庆 戴光 刘荣丽 |
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| 作者单位： | 四川大学高速水力学国家重点实验室,四川,成都,610065 |
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| 基金项目： | 国家自然科学基金，高速水力学国家重点实验室开放基金资助项目 (编号 :5 98790 13 ) |
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| 摘 要： | 对有掺气分流墩和无掺气分流墩的阶梯溢流坝面流场进行了对比试验研究。通过对压力、掺气浓度和消能效果等的分析和讨论，得出了掺气分流墩的增设将消除或降低阶梯凹角内和立面上的负压，显著增加了坝面水流的掺气量和掺气范围并提高了阶梯坝面消能率等重要结论。本研究为在大单宽流量下如何提高阶梯式溢流坝的消能率和防止空蚀破坏等方面进行了探索。
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| 关 键 词： | 分流墩 阶梯式溢流坝 掺气浓度 消能率 水工模型试验 |
| 文章编号： | 1001-2184(2002)01-0094-03 |
| 修稿时间： | 2001年11月3日 |
Experiment Study on Hydraulic Characteristic of Stepped Spillway with Aerated Splitter Pier |
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| YANG Qing,DAI Guang qing,LIU Rong li.Experiment Study on Hydraulic Characteristic of Stepped Spillway with Aerated Splitter Pier[J].Sichuan Water Power,2002,21(1):94-96. |
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| Authors: | YANG Qing DAI Guang qing LIU Rong li |
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| Abstract: | By means of hydraulic model investigation of stepped spillway with and without aerated splitter pier,we analyzed and discussed their pressure,air concentration and energy dissipation efficiency.It is concluded that the negative pressure on the nook of step and the upside of upright surface of step is eliminated and reduced,air concentration and aeration zone in the flow and energy dissipation efficiency of stepped spillway is increased.In order to attain high energy dissipation and avoid cavitations on stepped spillway on the large discharge per unit width conditions,we do some significant experiments. |
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| Keywords: | aerated splitter pier stepped spillway air concentration energy dissipation efficiency hydraulic model investigation |
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