FIELD: hydraulic structures, particularly devices, which prevent fish passage in water intake structures.
SUBSTANCE: fish protection device comprises water supply channel, water-permeable screen installed at an angle to water supply channel axis, water discharge channel and fish pass adjoining lower screen part. The water-permeable screen is made as fish arresting barrier and water-redistribution plate arranged one parallel another and one after another. Water-redistribution plate is provided with longitudinal trapezoid slots tapering towards fish pass. Ratio between lesser base of trapezoid slot and greater one is 0.5 - 1.0. Distance between fish arresting barrier and water-redistribution plate is 0.8-1.2 of lesser trapezoid slot base.
EFFECT: increased efficiency of young fish protection against fish passage into water intakes.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FISH PROTECTING DEVICE | 1994 |
|
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