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三峡水利枢纽溢流坝挑流基岩冲刷研究
引用本文:冬俊瑞,黄继汤,徐一春,李永祥.三峡水利枢纽溢流坝挑流基岩冲刷研究[J].长江科学院院报,1991(2).
作者姓名:冬俊瑞  黄继汤  徐一春  李永祥
作者单位:清华大学水利水电工程系 (冬俊瑞,黄继汤,徐一春),清华大学水利水电工程系(李永祥)
摘    要:本文介绍了作者采用能量计算法,放大岩块模拟试验法,以及量测冲坑底部脉动压强来估测冲坑稳定等三种方法,通过综合论证,求得了三峡大坝下游岩基冲刷极限深度值。结果表明:前两种方法所得各典型水位下的冲深值能相互验证,第三种方法能佐证第二种方法,因而说明所得的极限冲深值有较高的可信度。此外,本文在岩基冲刷问题研究方法上也具有较高的学术价值。

关 键 词:平衡冲刷深度  能量法  放大岩块模拟试验法  脉动压强

Study on the Scour of the Rockbed by Plunging Jet Downstream of the Three Gorges Spillway
Dong Junrui,Huang Jitang,Xu Yichun,Li Yongxiang.Study on the Scour of the Rockbed by Plunging Jet Downstream of the Three Gorges Spillway[J].Journal of Yangtze River Scientific Research Institute,1991(2).
Authors:Dong Junrui  Huang Jitang  Xu Yichun  Li Yongxiang
Abstract:Three methods have been used in the synthetical study, i. e. (1)the energy approach, (2)the physical model study by using enlarged rocks, (3)estimate the stability of the scour pool by using the fluctuating hydro-dynamic pressure measured at the bottom of the pool, so that the equilibrium scour depth of the bedrock downstream of the dam were predicted. The results indicate that for the typical water levels the scour depths obtained by the first and the second methods are nearly the same, and the experimental results obtained by the second method are confirmed by the third one. Thus, the predicted e-quilibrlum scour depths are rather creditable. The study has presented valuable results in terms of the research methods of rockbed scour.
Keywords:equilibrium scour depth  energy approach  physical model study by enlarged rocks  fluctuating hydrodynamic pressure  
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