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针对带跌坎的消力池充水过程水力特性研究偏少的现状,采用水工模型试验研究了带跌坎的消力池充水过程中的流态演变、时均动水压强和脉动压强等。结果表明,随水位抬升该类消力池内交替出现了多种水流流态,在一定条件下会发生水流短暂冲击消力池尾坎的现象;充水过程中,消力池底板时均动水压强可按静水压强分布规律估算;脉动压强均方根受到流态演变的影响,在充水过程中随水深增加而呈现不同的变化规律。
Aiming at the current situation that the research on the hydraulic characteristics of the stilling pool with a falling ridge is too little, the hydraulic model test is used to study the fluid evolution during the filling process of the stilling pool with a falling ridge. The dynamic pressure and the fluctuating pressure Wait. The results show that with the rising of the water level, a variety of water flow regimes appear alternately in this kind of stilling pool, and under certain conditions, the phenomenon of short-term impact on the tail ridge of the stilling pool occurs. During the filling process, It can be estimated according to the law of hydrostatic pressure distribution. The root mean square of fluctuating pressure is affected by the fluid evolution, and shows different variation rules with the increase of water depth during the process of water filling.