宽尾墩位置、始扩点佛汝德数与堰上水头关系  

Relationship of Location of Flaring Gate Piers,Froude Number at Section of Starting Flare and Weir Head

作　　者：莫政宇[1] 伍超[1] 卢红[2] 王波[1] 胡耀华[1] 

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室 [2]中国水电顾问集团贵阳勘测设计研究院,贵州贵阳550002

出　　处：《四川大学学报（工程科学版）》2007年第4期26-30,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金(50479061);四川大学青年科学基金(200569)

摘　　要：研究了宽尾墩位置、始扩点水流佛汝德数与堰上水头之间的关系,导出了与水头损失、闸门宽度有关的计算公式。搜集了国内多个电站的宽尾墩体型参数及相关水力参数进行计算,结果表明,始扩点水流佛汝德数分布在1.7-2.3之间,平均值为2.042。结合实际工程,讨论了移动宽尾墩位置对水力特性的影响,计算结果与数值模拟结果的比较表明,两者符合较好。A formula of Froude number at the section of starting flare is deduced in this paper. It is shown that the relationship exists among the location of the flaring gate piers ,the Froude number at the section of starting flare, the weir head, the head loss and the gate width. Collection of several local water plants＇ data is carried out and the Froude numbers are calculated by the formula. The result shows that these Froude numbers distributes between 1.7 ~ 2.3 and the average value is 2. 042. Based on actual projects, the influence of the flaring gate piers location to the Froude number is discussed. The calculated results agree well with those of the numerical stimulations.

关 键 词：水工建筑物 宽尾墩 始扩点佛汝德数 堰上水头 

分 类 号：TV653[水利工程—水利水电工程]