Design Method of Boulders Protruded Slope Fishways
Proceedings of the International Symposium on Fishways '95
The Organizing Committee for International Symposium on Fishways '95 in Gifu
For many hydraulic engineering problems, the analysis of resistance to free-surface flow over gravel-paved riverbeds, especially over boulders protruded riverbeds, is a fundamental prerequisite. Computational equations on the resistance to flow were developed from the Darcy-Weisbach equation by using experimental results on flows with large-scale roughness elements installed in a wide laboratory channel. A design method of boulders protruded slope fishways is presented that is based on investigation results of the flow resistance of large-scale roughness elements. A numerical example for designing fishways is presented to illustrate a calculation procedure.