FISH-PASS STRUCTURE Russian patent published in 2006 - IPC E02B8/08 

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

SUBSTANCE: fish-pass structure comprises fish accumulation means with stimulation device installed on horizontal guiding means and provided with netted web. The netted web is connected with drive, which defines position thereof. The structure also has false wall arranged along fish accumulation means and made as grid having the first end fastened to horizontal axis of rotation and the second end connected to drive, fish behavior control device having working members extending in parallel to fish accumulation means, transport container for fish movement arranged in bottom recess made in fish accumulation means end; container transfer mechanism installed on trestle. Fish accumulation means is provided with water-tight reinforced web and is arranged along bank edge. Working members of the fish behavior control device are made as jet-forming nozzles arranged over water level in fish accumulation means and connected to pressure waterway laid along stationary wall of fish accumulation means. Axis of false wall rotation is formed on fish accumulation means bottom and extends in parallel to fixed wall thereof. Water-tight web is fastened to free edge of false wall and is connected to drive by flexible ties. End parts of false wall are provided with corrugated members arranged at the beginning and the end of fish accumulation means.

EFFECT: increased efficiency of fish attraction and accumulation in fish accumulation means.

5 cl, 13 dwg