U形渠道的水力特性及水力计算  

Hydraulic Characteristics and Hydraulic Calculation of U-shaped Channel

作　　者：吕宏兴[1] 周维博[2] 刘海军[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]长安大学,陕西西安710054

出　　处：《灌溉排水学报》2004年第4期50-52,共3页Journal of Irrigation and Drainage

基　　金：国家自然科学基金资助项目(59979023);国家"十五"重大科技专项(2002AA2Z4131)

摘　　要：U形渠道断面水力和结构性能优越,是渠道输水工程中较常采用的断面形式之一,水力计算中的正常水深、临界水深求解无显函数形式的表达公式。提出了U形渠道水力最佳断面的设计方法,并给出了确定U形渠道水力最佳断面底弧半径的计算公式。导出了U形渠道正常水深、临界水深水力计算的迭代公式,并给出了判别水深范围的界限流量计算公式。The hydraulic and structure properties of U-shaped channel's section are attractive. This section is one of the sections used usually in the water conveyance system by channel. The calculating of its normal depth and critical water depth have no explicit function. The design method of U-shaped channel optimal hydraulic cross section and the calculation equation used to determine the bottom circle's radius of U-shaped channel is proposed in this paper. The iteration equation of U-shaped channel normal depth and critical water depth in hydraulic calculation is deduced. The equation of boundary discharge to criterion water depth range is given.

关 键 词：U形渠道 水力特性 水力计算 临界水深 正常水深 

分 类 号：TV131.4[水利工程—水力学及河流动力学]