戽流消能沿程水面波动特性研究  

Study on wave characteristics of bucket flow energy dissipation

作　　者：吴佩峰 韩晓维[2] 徐岗[2] 屠兴刚[2] WU Peifeng;HAN Xiaowei;XU Gang;TU Xinggang(Zhejiang Kaihua Reservoir Development Co.,Ltd.,Quzhou 324330,China;Zhejiang Institute of Hydraulics and Estuary,Hangzhou 310020,China)

机构地区：[1]浙江省开化县开化水库开发有限公司,浙江衢州324330 [2]浙江省水利河口研究院,浙江杭州310020

出　　处：《人民长江》2018年第16期112-117,共6页Yangtze River

摘　　要：为探究采用戽流消能方式时下游河道水面波动的情况,结合某实际工程建立了1∶60整体物理模型,应用DJ800多功能采集系统对自由戽流、附着戽流、临界戽流及淹没戽流时下游山区河道内沿程水面波动特性进行了模拟,并对沿程波高、周期、波长、波速及波动概率密度等特征参数进行统计。研究结果表明:戽流消能形成的涌浪在x/D<20的范围内衰减明显,之后衰减明显减缓;稳定戽流时,坝下水面波动周期、波长及波速较其余戽流流态均明显变小,且河道平面转弯对波浪的衰减影响有限,波浪传播较远;不同戽流流态河道内波动主要分布在±3σ范围内,基本符合正态分布。研究成果可为类似工程的防波设计提供参考依据。In order to study the fluctuation characteristics of surface water in the downstream river after bucket flow energy dissipation,based on the 1:60 physical model of an project,the multi-function data acquisition system called DJ800 was used to simulate the fluctuation characteristics of the surface water in different flow regimes(free bucket flow,attached bucket flow,critical bucket flow and submerged bucket flow).Wave parameters such as height,period,length,velocity and probability density were analyzed.Research results showed that surge significantly attenuated in the range of x/D<20,the subsequent attenuation obviously slowed down.The wave length,velocity,period of submerged bucket decreased compared with other bucket flows.For the submerged bucket,the channel plane bend has a limited effect on wave attenuation,so the wave propagation is far.The fluctuation in different bucket flows is mainly in the range of±3σ,which basically accords with the normal distribution.The research results can provide reference for the wave protection design of similar project.

关 键 词：消力戽 波动特性 概率密度 物理模型试验 山区性河道 

分 类 号：TV135[水利工程—水力学及河流动力学]