不连续宽级配河床垂线流速分布试验研究
魏丽
刊名水利水运工程学报
2012-06
期号3页码:26-31
关键词不连续宽级配床面 垂线流速 S 型流速
其他题名Experimental study on vertical velocity profile of river bed surface with discontinuous wide-grading sediment
通讯作者魏丽
中文摘要不连续宽级配床沙在天然河道中广泛存在,作为非均匀沙的特殊类型,其床面水流特性与一般意义上的非均匀床面相比具有不同的特性.以不连续宽级配床沙为例对其床面垂线流速结构进行了试验研究,结果表明不连续宽级配近底床面垂线水流结构出现S型转折,S型位置与水流强度和床面形态有关.并提出了基于近底S型的水流垂线流速分段表示的流速公式及垂线流速S型平均转捩位置的计算公式.
英文摘要Discontinuous wide-grading sediment widely exists in natural rivers as a specific type of non-uniform
sediment. It has different flow characteristics while comparing with traditional non-uniform sediment. The vertical
velocity structures of the discontinuous wide-grading sediment bed are studied in a series of flume experiments. The
experimental results show that S-type vertical velocity exists near the bed surface,and the S-shaped position is
related to flow intensity and bed form. The vertical velocity formula expressed by section and based on the S-type is
put forward and the S position of a vertical velocity profile is derived. The study provides a basis for the research of
the flow structure of the discontinuous wide-grading sediment.
学科主题水利工程
分类号TV142.1
语种中文
公开日期2012-12-27
内容类型期刊论文
源URL[http://192.168.143.20:8080/handle/131551/4674]  
专题成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
推荐引用方式
GB/T 7714
魏丽. 不连续宽级配河床垂线流速分布试验研究[J]. 水利水运工程学报,2012(3):26-31.
APA 魏丽.(2012).不连续宽级配河床垂线流速分布试验研究.水利水运工程学报(3),26-31.
MLA 魏丽."不连续宽级配河床垂线流速分布试验研究".水利水运工程学报 .3(2012):26-31.
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