FISH PASS Russian patent published in 2005 - IPC

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to fish pass facilities designed for passing fish spawners through retaining facilities to places of spawning and fattening. Proposed fish pass contains fish conduit connecting lower and upper ponds of hydraulic works made in form of overfall fish through, chambers arranged over length to fish conduit and divided by cross partitions with swim-in holes. Partitions are submerged, and bottom of chambers is made with slope to side of upper pond cross partitions are formed by lower end face part of chamber bottom. Swim-in holes form longitudinal channels made in bottom of chambers and they communicate bottom of above chamber with below chamber of fish pass. Bottom of each chamber can be provided with water inlet hole form side of upper pond overlapped by fish grid and communicating with bottom undersluice whose outlet hole is found before inlet first chamber of fish pass and is overlapped by guide grate.

EFFECT: provision of effective passing of fish along fish conduit.

10 cl, 13 dwg