对溢流坝模型下游动定床试验的研究  

Research on the dynamic and fixed bed model test under overflow dam

作　　者：张杨 胡海松[1] 伍学文 柳滔 ZHANGYang;HUHaiso ng;WUXuewen;L IUTao(College of Hydraulic and Environmental Engineering,China Three Gorges University,Yichang 443002,Chin)

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《水利科学与寒区工程》2018年第4期5-7,共3页Hydro Science And Cold Zone Engineering

基　　金：水利部公益性行业科研专项项目(201401027)

摘　　要：本文以某实际工程为基础,通过建立1∶60水工物理模型,对模型试验下游设置定床和动床两种河道型式,测量了不同工况条件下的下游河道的流速变化。结果表明:动床相对于定床的流速变化要小些,同时动床能消减部分水流冲刷的能量。因此,在修建类似工程时,需要进行动定床试验分析,以此来确定是否需要修建动床消力池。Based on some practical project ,a hydraulic physical model test was establishedscale was 1/60. Two kinds of downstrean river bed those were dynamic and fixed were respectively tested.The velocity fields in different conditons was measured for both dynamic and fixed bed. The results showed that the velocity variation of dynamic bed was smaller than fixed bed. At the same time ,the dynamic bed can partly reduce the flow energy of the erosion.So in the constrthe dynamic and fixed bed test analysis was had to determine whether to need to build dynamic stilling basin.

关 键 词：模型试验 动床 流速变化 消能 

分 类 号：TV652.1[水利工程—水利水电工程] TV131.61