SU1497343A1 - Inlet end of fish passage - Google Patents

Abstract

The invention relates to hydraulic structures for the preservation of the natural reproduction of fish, in particular, to fish passages. The purpose of the invention is to increase the efficiency of attracting fish by creating stable flow currents in a changing water level in the downstream. The inlet tip 1 of the fish passage 2 includes a tray 4 located in the water area 3, the bottom 6 of which is located at the bottom 7 of the water area 3, conduits having internal and external walls, discharge pipes 12 installed at an angle to the axis of the tip, and flat filter suppressors 13 installed at an angle to the axis of the cap. In this case, the tray 4 is divided into compartments 14 by partitions 15 with pouring outlets 16, and inlet walls are made in the inner walls of the conduits. At low levels of water, the flow of water entering to attract fish through pipe 12 is discharged into conduits, mine compartments 14. At water levels above the bottom of the slits, the water from pipes 12 is partially drained through the slits, and partly through the conduits. In the limiting case, all the water from pipes 12 will flow directly into the compartments 14 of the inlet head 1. 4 Il.

Description

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31497343

The invention relates to hydraulic structures for the preservation of the natural reproduction of fish, and in particular to fish passageways.

The purpose of the invention is to increase the efficiency of attracting fish by creating stable flow currents in conditions of varying water levels in the downstream.

FIG. 1 shows the entrance of the fish passage, a longitudinal section; Fig 2 shows the same plan; in fig. 3 shows section A-A in FIG. one; in fig. 4 shows a section BB in FIG. one.

The entrance tip 1 of the fish pass 2 includes a tray 4 with foundations 5 located in the water area 3 of the lower pool, the bottom 6 of which is at the

ten

When using the input tip 1, the attraction process consists of several periods.

At low levels of water in the water area 3, the additional water flow entering to attract fish through the discharge pipe 12 is discharged into the conduits 9 arranged in the basins 5 and further along them. merges into the downstream, mine compartments 14 of the inlet tip, and in order for the fish not to enter the conduits 9, a fish inhibitor 13 is made (for example, netted, Jalous). When the water level increases and exceeds its level: the water from the water discharge pipes 12 is partially discharged through the slots 17, and partly through the water lines 9. Thanks

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the bottom 7 of the water area 3, connected to the vertex 20 in the inlet tip 1, retains the tidal entrance gobies 8 of the fish passage 2, made, in the outlines 5 of the tray 4, the conduits 9 of a rectangular cross section consisting of. internal 10 and external 11 walls and limited on the side of the upstream. vertical entry bulls. 8 fish passage 2, discharge pipes 12 installed in vertical input bulls 8 of fish exit 2 at an angle to the axis of the inlet tip at a level above the abutments 5 of tray 4, and flat filter fish fins 13 installed at an angle to the axis of the inlet tip between the inner 10 and 11 outer walls of the conduits 9, while the bottom 6 of the conduits 9 has a slope towards the downstream and is adjacent to the bottom 7 of the water area 3, the tray 4 is divided

with hydraulic conditions attracting fish, i.e. unit costs and, therefore, speeds will be constant.

At the maximum level, the water from the discharge pipes 12, supplied from the headwater, will still flow directly into the compartments 14 of the inlet tip 1, because the water-30 waste pipes 12 are mounted at an angle to the axis of the fish passage 2.

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Claims (2)

Invention Formula The entrance tip of the fish pass, which includes a tray with foundations located in the downstream water area, the bottom of which is located at the bottom of the water area, which is connected to vertical on the compartments 14 partitions 15 with vplyuchYu entrance bulls fish-pass, cast When using the input tip 1, the attraction process consists of several periods. At low levels of water in the water area 3, the additional water flow entering to attract fish through the discharge pipe 12 is discharged into the conduits 9 arranged in the basins 5 and further along them. merges into the lower reach, mine compartments 14 of the inlet tip, and in order for the fish not to enter the conduits 9, a fish inhibitor 13 is made (for example, netted, Shaped). When the water level increases and exceeds its level: the water from the water discharge pipes 12 is partially discharged through the slots 17, and partly through the water lines 9. Thanks this is in the input tip 1 saved t- with hydraulic conditions attracting fish, i.e. unit costs and, therefore, speeds will be constant. At the maximum level, the water from the discharge pipes 12, supplied from the headwater, will still flow directly into the compartments 14 of the inlet tip 1, due to the fact that the waste pipes 12 are mounted at an angle to the axis of the fish passage 2. this is in the input tip 1 saved t- Invention Formula The entrance tip of the fish pass, which includes a tray with foundations located in the downstream water area, the bottom of which is located at the bottom of the water area, which is connected to vertical that in order to increase the efficiency of attracting fish by creating stable flow of currents in conditions of varying 16 holes, near the bottom of which are installed between the inner walls 10 of the conduits 9 at their end, and in the inner walls of the 10 conduits 9 are drained: 55 The water level in the downstream, it has slots 17 adjacent to the vertical water inlet tray 8 of the fish-pass 2. made of internal and The entrance tip of the fish passage works as follows. Along the fish passage 2 path and through the entrance of the fish passage entrance bulls, the discharge head 1 is supplied by specific pipes installed in the water flow to encourage the fish to enter and pass them up the fish passage. 2. In order to stabilize the conditions for attracting fish during fluctuations of the water level in the downstream water area, it is necessary, depending on the depth of the water in the water area 3, to feed various water flows. external walls and bounded from the side of the upstream vertical ticks of the fish passage at an angle to the axis of the inlet head, at the elevation of the tray abutments, and with flat filter fish that are installed at an angle to the axis of the inlet head between the inner and outer walls of the conduits, while the bottom of the conduits has a slope to the side that in order to increase the efficiency of attracting fish by creating stable flow of currents in conditions of varying The water level in the downstream, it is supplied with water made in the basins of the tray, consisting of internal and external walls and bounded from the side of the upstream vertical fish inlets, water discharge pipes installed in the ticks of the fish passage at an angle to the axis of the inlet head, at the elevation of the abutments of the tray, and flat filter fish that are installed at an angle to the axis of the inlet head between the inner and outer walls of the conduits, while the bottom of the conduits has a slope downstream and matched to the bottom of the water area, the tray is divided into compartments by partitions with open holes, the middle of which to the lower reach is installed between the inner 12 P 9 0 V / W.2 LA Mf / y / / VV / X in fs 0xt 14973436 the walls of the conduits at their end, and in the inner walls of the conduits there are drainage slots adjacent g to the vertical entrance gobies of the fish passage. Bb FCL