平底闸及闸室驼峰堰的水力特性

Study on Hydraulic Characteristics of Sluice with Horizontal Bottom and Hump Weir

从理论上论证平底闸的水力特性及闸室中驼峰堰、驼峰堰的相对位置对流量系数的影响,分析各种计算泄流能力(只考虑自由出流情形)的常用方法,并对这些计算方法进行比较。结果表明:布置合理的闸型,可提高闸的泄流能力;平底闸闸室内加设驼峰堰,对提高流量系数的作用很大,但驼峰堰在闸室中所处的位置对提高流量系数的作用是不同的;驼峰堰加在闸室中部靠前的部位是最佳的布置形式。

This paper focused on theoretically demonstrating the hydraulic characteristics of sluice and sluice chamber, and the influences of the relative location of hump weir to the discharge coefficient, and also analyzing and comparing several common methods for computing discharge capacity （only hased on the situation of free flow）. The resahs show that： a） reasonable layout of the gate type may increase its discharge capacity; b） the sluice chamber adding hump weit can improve the flow coefficient m highly, but the position of hump weir may be has different effects on improving flow coefficient; c） the position of hump weir in the fore-middle part with sluice chamber is the hest arrangement.