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

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

SUBSTANCE: fish pass comprises fish accumulation means with urging means installed on horizontal guiding means and provided with netted web connected with netted web position drive, false wall arranged along fish accumulation means and made as grid. One grid end is connected to the drive. Fish pass also has fish behavior control device having working members arranged in parallel to fish accumulation means, fish transport conveyer located in bottom recess at fish accumulation means end, container conveying means located on overpass. Fish accumulation means tray is stationary, fish accumulation means extends along bank line. Working members of fish behavior control device is made as jet-forming means arranged above water level in fish accumulation means and connected with pressure pipeline extending along fish accumulation means. False wall is parallel to outer wall of fish accumulation means inside it and may be vertically displaced relative guiding slot of the wall. Surface swimming-in orifices are formed in upper part of outer wall of fish accumulation means. The swimming-in orifices are spaced along length thereof.

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

7 cl, 22 dwg