FISH GUIDE OF FISH PASS FACILITY Russian patent published in 2005 - IPC

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for passing fish spawners through retaining facilities to places of spawning and fattening. Proposed fish guide has prismatic fish guide slots made in bottom of head race of lower pond arranged at acute angle to longitudinal axis of fish pass facility. Slots differ in width over length adjoining by minimum width to inlet of trough-fish storage and they are made in plan in form of rays diverging relative to longitudinal axis of fish pass facility. End face parts of slots adjoining inlet of trough-fish storage communicate with trough channels whose bottom is made tilting to side of lower pond. Fish guide is provided with bottom undersluices and stream-forming nozzles communicating with undersluices which are connected by gate with upper pond, nozzles being arranged in bottom part of slots and orientated to lower pond.

EFFECT: provision of hydraulic conditions in zone of fish guide contributing to effective movement of fish to inlet of fish pass facility.

4 cl, 9 dwg