METHOD AND DEVICE FOR YANG FISH PROTECTION AGAINST ENTRY INTO WATER INTAKE STRUCTURE Russian patent published in 2005 - IPC

FIELD: hydraulic structures, particularly fish-passing devices included in water intake structures.

SUBSTANCE: method is based on young fish's tendency to follow moving objects. Method involves forming water permeable screen including flexible elastic members and extending for the full stream depth; providing means for flexible members displacement and installation in working position; providing preliminary young fish concentration in previously created artificial water-plants and transferring young fish into fish-passing channel. Water permeable screen is formed of flexible elastic members on level of stream carrying young fish with maximal concentration. Screen is created in horizontal plane, wherein flexible elastic members are reciprocated from one bank to another along with directing young fish concentrated inside screen in fish-passing channel. Flexible elastic members imitate natural water flora, which is native fish habitat.

EFFECT: provision of controllable water intake during change in vertical young fish descent dynamics.

27 cl, 21 dwg