Sill
Bottom fall of the Fuhse in Steinbrück
A ground sill , also Sohlabsturz , in Austria also Sohlgurt called (engl. Low weir ) is a transverse to the flow direction of a river control structure , whose the depth of erosion decreases. Common designs are stone embankments, rows of piles or concrete sleepers.
Bed sills have the disadvantage that aquatic life cannot overcome them. They are therefore often converted into bed slides and ramps . Base slides are flatter with a gradient of 1:20 to 1:30 than base ramps, where it is 1: 3 to 1:10, otherwise the two do not differ significantly.
See also
literature
- Michael Hütte: Ecology and hydraulic engineering: ecological principles of water management and hydropower use. Vieweg, Wiesbaden 2000, ISBN 3528025832
- Pierre Y. Julien, River Mechanics , Cambridge University Press, 2002