FIELD: water engineering.
SUBSTANCE: invention refers to water engineering, and namely to constructions meant for fish attracting and passing through support structures into meadows and breeding areas. Fish-pass intended for fish attracting and passing from hydraulic system's afterbay into forebay is made in the form of staged or sloped tray or channel with longitudinal slope in the direction of afterbay that includes vertical division walls located laterally. Vertical division walls divide fish-pass into compartments wherein inlet holes, either orthogonal, square or spherical, are located. Jet-forming heads are arranged along perimeter of holes and are equipped with guards so that heads are located inside outlet part of inlet hole formed by guards, and are arranged parallel to plane of screen wall of adjacent guard. Heads' outlet holes are located directly in inlet holes between planes of lateral surfaces of transverse division walls or in independent channels. Jet-forming heads are connected with feed pipelines or distributing headers provided inside division walls. Guard is located inside fish-pass division wall. Guard's screen walls are edges of outlet part of inlet hole. Jet-forming heads are installed on rear side of protrusion formed by inlet part of inlet hole and bottom of edges of outlet part of inlet hole. Cross section of distributing header occupies all the length of fish-pass division wall and is of polygon shape.
EFFECT: invention ensures stable fish-pass operation and protection of fish that passes across fish-pass from jet-forming heads and high-speed sections of hydraulic jets.
3 dwg
