期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：304
期号：3
页码：1-9
DOI：10.1088/1755-1315/304/3/032006
出版社：IOP Publishing
摘要：Based on the physical model test method, the dynamic cause of local scouring is explored. Result shows that uneven distribution of vertical turbulence intensity of near-bottom flow is the main driving force for local scouring. Distribution characteristics of vertical turbulence intensity of the near-bottom flow determine the spatial shape of the local scouring, that is, the range and the extreme-deep point of the local scouring correspond to the position of the strong turbulent zone and maximum value respectively. When the effect of the near-bottom strong turbulence zone on the riverbed is completely isolated, local scouring disappears, otherwise it will occur in the uninsulated part.
