| 摘要 |
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 pass includes fish conduit connecting lower and upper ponds and provided with stepped bottom and fish transportation device consisting of pressure pipeline, dispensing chamber and stream-forming channels. Each step of fish pass terminates in spillway sill connecting lower chamber with upper chamber. Stream-forming channels are orientated to side of upper pond, being arranged at acute angle to bottom of fish conduit chamber and connected with dispensing chamber. Pressure face of spillway sills is made in form on inclined plane with tilting to side of lower pond, and stream-forming channels are made on inclined plane, lower than the plane, and in form of concave chutes widening in direction of upper chamber of fish pass. Outlet holes of stream-forming channels are coaxial with chutes. Angle of arrangement of stream-forming channels decreases in direction of upper step of fish pass. ^ EFFECT: provision of hydraulic conditions in fish conduit for effective movement of fish along its length. ^ 3 dwg |
