水闸消能效果分析研究

Research on the effect of energy dissipation analysis of sluice

水闸消能一般采用底流式(水跃)消能,但它往往又是在低水头情况下泄流,佛汝德数低,水闸消能效果较差。为了提高水闸的消能率,采取了有效的工程措施,即在普通消力池的基础上增加了辅助消能工以及修建复式消力池等工程措施。通过分析研究可知,水闸的消能效果有了明显的提高,尤其是复式消力池消能率较高,能起到良好的消能效果。

Energy dissipation of sluice always adopts energy dissipation by hydraulic jump and it often discharge with low hydraulic head and with small Froude number, so it has little effect in energy dissipation. In order to improve energy dissipation rate, valid engineering measure should be taken, that is adding auxiliary energy dissipater device to ordinary stilling basin to build compound stilling basin. It shows by the analysis that the energy dissipation of sluice is improving obviously, especially for compound stilling basin with high compound energy dissipation rate, and it can reach a good energy dissipation effect.