Waterworks

 

(57) Abstract:

The invention relates to hydraulic engineering and is intended to create a backwater, its intake to a water body, the discharge of flood and pass fish from downstream of the waterworks in the upstream face. The hydrosystem includes the spillway chute and ladder fish-pass, part of the camera which is placed over the trays of the spillway, and the upper head of the fish-pass is parallel to the trays of the spillway. Adjacent to the downstream side of the fish-pass tray spillway is equipped with a shutter, which is placed intermediate the camera fish way, forming tray spillway and located between it and the intermediate chamber beogradjanke wall top of the head of the fish-pass. Length beogradjanke wall is determined from the conditions created for its downstream end drawing speeds. The invention improves the efficiency of the pass fish through the hydrosystem with significant changes in water level upstream. 4 Il.

The invention relates to hydraulic engineering and is intended to create a backwater, its intake to a water body, the discharge of flood and pass fish from downstream of the waterworks in the upstream face.

A famous building with the upper head (see B. C. Malevany and I. C. Nikonorov "Fish passage and fish protection structures", M., 1984, page 38 Fig. 11-a).

The disadvantage of this waterworks is that he can't miss the fish to the spawning grounds at significant level changes. When the water level difference is more than five meters regulators application Kale, because of the depth of the upper chambers, significantly shaded to fish at low levels, it is impractical. When creating mine the top of the head with many inputs required service (opening and closing) Plavnik holes and significant capital expenditures to maintain the pressure of the upstream at the maximum level.

Also known waterworks on author. mon. USSR N 1778227 in class. E 02 B 8/08 from 1991 adopted for the prototype and including a spillway with trays, ladder fish-pass, the middle part of which is placed over the tray surface, and the upper head is parallel to the trays of the spillway.

The disadvantage of this waterworks is the inability to pass fish upstream water with significant drawdown level.

The objective of the proposed technical solution is improving the efficiency of border crossing fish with significant changes in level (the waterworks in the backup dir the trays and ladder fish-pass, part of the camera which is placed over the trays of the spillway, and the upper head of the fish-pass is parallel to the trays spillway, one of the trays of the spillway adjacent to the downstream side of the fish-pass provided with a shutter, which is placed intermediate the camera fish way, forming tray spillway and located between it and the intermediate chamber beogradjanke wall additional horse head fish way, and the length of beogradjanke wall is determined from the conditions created for its downstream face drawing speeds.

The invention is illustrated by drawings, where Fig. 1 shows the proposed structure of Fig. 2 - plan of the fish-pass; Fig. 3 - section a-a in Fig. 2; Fig. 4 - section b-B in Fig. 2.

The hydrosystem includes spillway dam 1, the HPP water intake 2, spillway tract with trays 3, 4 and 5, the latter of which is sagebrook, and fish passage structure in the form of a ladder fish way with 6 chambers 7 of the upper head 8 that is parallel to the trays of the spillway. Part of the chambers 7 fish way above the trays spillway channel, perpendicular to them. Tray 4 spillway tract adjacent to the downstream side of the fish-pass, provided at the output regulating the CSOs tract made with beogradjanke wall 11, installed at the end of the tract, and to ensure favorable uneven plot of velocity at the outlet of the intermediate chamber 10. In the period of skip spawning fish tray 4 spillway tract due to commissioning of the shutter 9 performs the function of the upper head of the fish-pass, and during the flood evacuation - its normal function.

The operation of the waterworks when NPI is as follows.

The water in the water intake hydro 2 is due to the creation of backwater upstream of the hydrosystem. Approach the fish to the waterworks and the lower head fish passage facility 12 occurs at the expense of attracting the flow of water through the trays 3 and 4 outlet tract and partially through the tract of the fish-pass. The fish occurs along the entire length of the tract of the fish-pass. At this time vplive hole (POS. not labeled) connecting the intermediate chamber 10 with the tract of the fish-pass, closed. After raising fish in the upper head 8 fish way it goes in the upstream face and focusing on the course, go into the river to the spawning grounds.

When translating complex in backup mode of operation through it skips on public health and fish consumption water. By reducing the consumption level of the upstream lower adnaco remaining difference between the pools is still irresistible to fish. Therefore, for the passage of fish upstream water is partly used the lower part of the fish-pass with an intermediate chamber 10 with the lowered control gate 9. The upper part of the tract of the fish passage facility at this time is separated from the bottom gate 13 and is excluded from the work. Raising fish is due to the work of the open tray 3 spillway tract and partly due to the passage of water under the control gate 9 of the tray 4 and the flow rate passing through the tract of the fish way.

Using the proposed control structure, distinguishing features, which consists in creating dvukhurovnevogo fish yield in the upper water allows migratory fish, regardless of the operation of the hydro system in a standby mode or a normal, easily overcome the pressure drop to the waterworks and then move to the spawning grounds.

Waterworks, including the spillway chute and ladder fish-pass, part of the camera which is placed over the trays of the spillway, and the upper head of the fish-pass is parallel to the trays spillway, characterized in that adjacent to the downstream side of the fish-pass tray spillway is equipped with a shutter, which is placed intermediate the camera fish way, forming with tray vadsbro is abogada, the length beogradjanke wall is determined from the conditions created for its downstream end drawing speeds.

 

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SUBSTANCE: invention relates to constructions and method aimed at passing spawners through support facilities to places of spawning ands fattening. Proposed head of fish conservation works includes supply unit connected with head water by gate installed in bypass culvert, fish attracting device in form of guides installed before intake part of fishway and made in form of horizontally arranged collectors with non-submerged water outlet holes whose central axes are orientated at different angles to water surface. Collectors are connected with end parts of bypass culverts, being installed for rotation relative to intake part of fishway and made in form of pipes used as base of carrying trusses whose vertical support booms are made coaxially with end parts of bypass culverts. Lower parts of booms are made hollow, being connected with inner space of collectors and bypass culverts. Carrying trusses are connected with drive. To attract fish, "sweep" to attract fish is formed at intake of fish conservation works by opening supply unit to preset value, delivering main attraction water over entire depth of flow and additional attraction water to surface horizons of flow and concentration of fish before intake of fish accumulator-trough. Additional attraction of fish is provided from side of water discharge front of diversion unit with subsequent shifting at end of attraction process of additional attraction water to side of longitudinal attraction water to side of longitudinal axis of fish accumulator-trough. Fish getting into zone of action of additional attraction water is entrained and transferred to zone of action of main attraction water. At end of process of attraction, delivery of additional attraction water is stopped, and fish is concentrated before intake of accumulator-trough.

EFFECT: provision of hydraulic conditions to attract fish from large width of waterway.

3 cl, 5 dwg

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