Search

Copyright of Yellow River is the property of Editorial Board of Yellow River and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The sediment deposited by the external flood into the main channel will weaken the flow capacity of the channel, causing the water body to overflow the top and overflow the embankment, which will seriously affect the stability of the embankment slope. The effects of sediment concentration in external flood on the transverse and vertical distribution of flow velocity, sedimentation process and sedimentation morphology in the main channel were studied by physical model test. The results show that the middle of the main channel is less affected by the external flood and the resistance of the channel side wall, and the flow velocity is larger. On the contrary, the flow velocity near the flood mouth and the channel side wall is smaller. The flow velocity increases with the decrease of water depth in a certain depth range, and decreases when it is near the surface. With the increase of external flood sediment concentration, the sediment deposition thickness increases, and the initial position of sediment deposition and the maximum position of sediment deposition thickness are closer to the upstream of the main channel. [ABSTRACT FROM AUTHOR]