摘要
概述潮汐河口潮波变形的普遍性及建闸前后影响变形的不同因素。建立了概化河口闸下河道物理模型,说明了模型设计的理论依据及模型布置方案。通过概化模型对建闸河口不同引河长度的潮波变形特性进行模拟研究,得到不同闸址建闸后潮波变形的共性和差异。闸下引河长度对潮波变形的影响明显,随着闸址距河口距离的增加,沿程潮差的增减趋势发生变化;建闸后涨潮平均流速与落潮平均流速的比值变化趋势与引河长度紧密相关。
Overviewing the universality of tidal wave transformation in the estuaries with tidal barriers constructed,and different factors influencing the transformation before and after the construction of barriers,this paper established the generalized model and expounded the theoretical basis of model design and the model layout.Simulation study on the phenomenon of tidal wave transformation with different length of irrigation channel through generalized physical model was carried out,and several conclusions were drawn.The length of irrigation channel influences tidal wave transformation obviously,including the difference of tidal process under various conditions,different trends of tidal range along the irrigation channel and the change of velocity ratio of flood and ebb tide with the length changing.
出处
《水运工程》
北大核心
2011年第6期6-10,共5页
Port & Waterway Engineering
基金
水利部公益性行业科研专项(200801016)
国家自然科学基金(51079088)
关键词
建闸河口
概化物理模型
引河长度
潮波变形
estuary with barrier
generalized physical model
length of channel
tidal wave transformation
