METHOD FOR KINETIC FLOW ENERGY DISSIPATION IN FISH PASSING AND HATCHERY CHANNEL AND FISH PASSING AND HATCHERY CHANNEL Russian patent published in 2006 - IPC E02B8/06 E02B8/08 

FIELD: hydraulic structure, particularly fish passing structures adapted to permit broad fish passage through support structures to fish hatchery and growth areas.

SUBSTANCE: fish passing channel comprises waterway having head connected to upper hydrosystem pool and mouth part communicated with lower hydrosystem pool, roughness members and natural flora arranged in layers in floodplain and bed parts of transversal channel section. Waterway is made as channel with polygonal transversal section. Waterway channel has different cross-sections alternating along channel length. Bed channel part is located along central longitudinal part thereof, floodplain channel parts extend along channel banks and made as curvilinear segments in plan view. When working water flow passes main flow part flows through waterway bed part and cooperates with remainder flow part, which flows along floodplain waterway parts formed in convex channel bank areas. Secondary vortex flows with vertical axis of rotation are created in floodplain waterway parts and have flow directions opposite to that of main flow part.

EFFECT: increased efficiency of kinetic flow dissipation and reduced length thereof.

13 cl, 34 dwg