台阶式消能在某水电站泄水槽设计中的应用  

Application of stepped energy dissipation on chute design

作　　者：蔡胜利[1] 张秀崧[1] 刘万新[1] 李梅[1] 李霞 

机构地区：[1]中水北方勘测设计研究有限责任公司,天津300222 [2]军事交通学院基础部,天津300162

出　　处：《北京水务》2011年第4期33-36,共4页Beijing Water

摘　　要：对于长距离泄水槽,坡度缓水头高,常规设计消能工规模大,为此在底板上设置台阶,增加糙率,以减小消能工的规模。应用近似糙率法、CHANSON经验公式法对某长距离台阶式泄水槽进行了水力计算。计算结果符合经验规律,经工程实际运行验证2种计算方法均可应用于工程设计;台阶式泄水槽减速掺气消能效果显著,减少了工程投资。The slop is mild and head large downstream energy dissipators. A roughness hydraulics and reduces the size of the of long distance and stepped is big for long distance stepped chute spillways, which needs a stepped chute spillway is designed to augment coefficient of required downstream stilling basin. This article calculates the chute spillways applying Approximate Coefficient of Roughness Calculation, CHANSON Empirical Equation. The result is reasonable meeting the experience. Both of the calculation methods can be applied to engineering design which is proved by practically running. The stepped chute is significant increment of the energy dissipation, also reduces the velocity of air- entrained flow and the engineering investment.

关 键 词：台阶式泄水槽 近似糙率法 CHANSON经验公式法 

分 类 号：TV734[水利工程—水利水电工程]