Hydraulic Geometry and Theory of Equilibrium Water Depth of Branching River

Based on the flow continuity formula, resistance sediment transport capacity formula and width-depth ratio relationship, hydraulic geometry relationship theory of equilibrium water depth for a branching river are established suitable arbitrary section shape. The cross-sectional area distributary channel main stream is power function its bifurcation with an exponent 6/7. This was applied to 12.5 m deep-water Yangtze River (the North Passage, Fujiangsha Waterway Shiyezhou Waterway). reliability verified construction effect regulation project predicted. results show that has achieved certain whole, but some waterways still cannot meet requirement navigation depth. It necessary adjust layout focus increasing reducing so as increase maximum