Experimental study on erosion of sand beds with different slopes by plane jet with inclined angles
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
The utility of jet dredging has been widely used and played an important role in dredging projects.It is important to explore its results with different jet factors and dredging factors,which can improve dredging efficiency.In this paper,the erosion processes of sand beds with different slopes by the plane jet with inclined angles were investigated with different jet velocities,jet angles and slopes of sand bed,shapes of scour holes,and characteristics of turbid flow outside the crater.The results showed that:(1) There were geometric similarities of the scour holes with asymmetrical geometry and downstreamtoward profiles;(2) The development processes of the scour holes can be divided into three stages:initial stage,development stage and stable stage;(3) The depth of the scour holes developed with time as a logarithmic relationshp,and the erosion rate reached the largest when the crater depth reaches half of the maximum depth;(4) With the increase of jet angle,the areas of twodimensional crater decreased firstly and then increased.It reached its minimum value when the jet angle was at 45°;(5) The volumes of sediment erosion and the speed of turbid flow outside the crater increased with the slopes of the sand bed.However,the growth trend slowed down after the slope was greater than 10‰.
Keywords:
Project Supported:
Clc Number:
Mobile website
® 2024 All Rights Reserved
冀公网安备13010502002656号
冀公网安备13010502002656号