进口形式对联合消力池消能效果的影响  

Influence of inlet form on energy dissipation of shared stilling basin

作　　者：罗志鹏[1] 王均星[1] 杨晓[1] 杨超林 LUO Zhipeng;WANG Junxing;YANG Xiao;YANG Chaolin(State key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China;Yunnan Institute of Water ＆ Hydropower Engineering Investigation,Design and Research,Kunming 650021,China)

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]云南省水利水电勘测设计研究院,云南昆明650021

出　　处：《武汉大学学报（工学版）》2018年第10期876-880,共5页Engineering Journal of Wuhan University

摘　　要：针对车马碧水库工程联合消力池设计方案1中水流流态差、临底流速较大等问题,在保持消力池长度及深度不变的基础上,利用物理模型试验,优化消力池进口形式,观测对比消力池水流流态、水面线、临底流速和消能率等水力特性指标.结果表明：渐扩式进口通过增大跃首处横向空间,增强了跃首处水流的紊动以及横向扩散作用,有效地解决了突扩式进口消力池中水流流态差、临底流速较大等问题,同时能够提高消力池消能率,实现在不改变消力池深度和长度的条件下改善消力池流态和流速等水力特性指标的目的,可为类似的工程提供参考.Focusing on the issues that the flow regime is rather bad and the bottom velocity is rather high in the stilling basin of the scheme 1,the paper changes the form of the entrance of the stilling basin by physical model test under the condition of original length and depth of the stilling basin,and then observing and contrasting the hydraulic characteristics of flow regimes,water surface profiles,bottom velocities and energy dissipation ratios.The results indicate that the gradual expansion entrance solves the problems of poor flow regime and high bottom velocity effectively,and improves the energy dissipation ratio of the stilling basin by enhancing the turbulent function and the lateral diffusion of the flow through enlarging the space at the head of hydraulic jump.The gradual expansion achieves the goal of improving the flow regime and reducing the bottom velocity under the condition of original length and depth of the stilling basin,so as to provide a reference for similar projects concerned.

关 键 词：水力学 联合消力池 水跃消能 进口形式 

分 类 号：TV653.1[水利工程—水利水电工程]