Sole slip
A Sohlgleite or Sohlengleite (engl. Rock ramp (for rock ramp ) or river bottom slide ) is below the water level lying transversely to the flow control structure of the flow construction that the depth of erosion of the river bottom intended to limit.
Base slides and the similarly designed base ramps differ in their incline: Base slides are more flat (1:20 to 1: 100) than base ramps (1: 3 to 1:10).
Common forms of construction are concrete sleepers, wooden beams or rows of piles that lie across the river bed or coarse gravel that is poured into the river bed crosswise to the direction of flow. Geotextiles are sometimes used below the coarse ballast layer as additional protection against erosion. Additional support stones and rows of piles can also be used in the area of post-bed protection or on the sliding foot.
Weirs and bed sills are often converted into bed slides in order to restore longitudinal permeability for fish. Due to the biological requirements, stone embankments are preferred over block construction.
See also
Individual evidence
- ↑ Michael Hütte, Ecology and Hydraulic Engineering . Parey, Berlin 2000. ISBN 3-8263-3285-7
- ↑ M. Brunke, T. Hirschhäuser: Recommendations for the construction of Sohlgleiten in Schleswig-Holstein (approx. 2.8MB). (PDF; 3.0 MB) (No longer available online.) In: State Office for Nature and Environment Schleswig-Holstein. July 2005, archived from the original on September 29, 2007 ; Retrieved October 12, 2008 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ LUBW: Passability for animals in rivers. Part 1. (PDF; 3.0 MB) In: State Office for the Environment, Measurements, and Nature Conservation Baden-Württemberg. June 2005, accessed June 17, 2013 .
