Abstract
Study on the Effect of Different Bed Sills on Flow Structure and Scouring At the Bed of Channel
Highlights
River bed stability is not the only a problem in river management and a creation of riverine habitat for fishes and aquatic ecosystem
It can be observed that the middle part of the channel with convex bed sill has a maximum scouring depth
A sine bed sill is a concave bed sill surrounded by two convex bed sills at the sides as it is shown in figure 3
Summary
River bed stability is not the only a problem in river management and a creation of riverine habitat for fishes and aquatic ecosystem. Bed and bank erosion is a common cause of river form. It is due to the flow variation in the river channel during flood events. When flow just overtops the main channel, the dominant flow causes a change in river pattern [4, 10]. Protecting the bed and banks of river against changes requires a river management plan and a designed river training mechanism. The bed of the river is very susceptible to erosion due to high shear stress at the bed around bridge piers [14, 15, 16, 19, 21], improved protection of bed river is essential. To alleviate this, training works must be carried out to decrease the possibility of bed erosion
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