| 摘要 |
FIELD: hydraulic structures, particularly fish passes permitting fish passage through support structures to fish hatchery and growth areas. ^ SUBSTANCE: fish-passing device comprises bottom fish-guiding baffles extending at an angle to fish-passing channel in plane view and adjoining fish-passing channel walls and bypass galleries of additional supply block, which are created inside fish-passing channel walls. Bypass galleries have inlet orifices located in upper pool and provided with gates and outlet orifices connected with inner cavities of bottom fish-guiding baffles. Fish-passing device also has spaced apart jet-forming channels distributed along downstream side faces of bottom fish-guiding baffles. Jet-forming channels are grouped in rows along bottom fish-guiding baffle heights and have outlet orifices facing towards lower pool along downstream side faces of bottom fish-guiding baffles. ^ EFFECT: improved fish-attraction conditions. ^ 13 cl, 13 dwg |
