模型变率对潮流波浪作用下局部冲刷深度的影响  

The effect of distorted scale ratio on local scour of groins under tidal currents and waves

作　　者：窦希萍[1] 董凤舞[2] 黄晋鹏[2] 高亚军[2] 娄斌[2] 王向明[2] 

机构地区：[1]河海大学环境科学与工程学院,江苏南京210098 [2]南京水利科学研究院,江苏南京210029

出　　处：《海洋工程》2004年第4期26-36,共11页The Ocean Engineering

摘　　要：根据窦国仁波浪潮流共同作用下的全沙模型相似理论,设计5个变率分别为2.5、4、6、8 33和12 8的长江口深水航道北槽概化物理模型,进行潮流和潮流波浪共同作用下的丁坝坝头清水和浑水冲刷试验,研究不同动力条件和不同工程布置下变率对冲刷坑发展过程及冲刷深度的影响,给出了变态模型与正态模型冲刷坑稳定冲刷深度的关系式。　 According to DOU Guo-ren′s similarity theory of total sediment transport modeling for estuarine and coastal regions, five generalized physical models with different scale ratios are built. Some experiments on the local scour of a pair of groins and two pairs of groins are carried out respectively under the action of tidal currents, and of both tidal currents and waves. The effect of the distorted scale ratio on the depth of scour pits is discussed. The relation between scour depths in the distorted and undistorted models is given.

关 键 词：物理模型 变率 潮流 波浪 局部冲刷 

分 类 号：U611[交通运输工程—船舶及航道工程]