CN108277783B - Fishway water replenishing fish luring structure and water replenishing fish luring method thereof - Google Patents
Fishway water replenishing fish luring structure and water replenishing fish luring method thereof Download PDFInfo
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- CN108277783B CN108277783B CN201711443239.6A CN201711443239A CN108277783B CN 108277783 B CN108277783 B CN 108277783B CN 201711443239 A CN201711443239 A CN 201711443239A CN 108277783 B CN108277783 B CN 108277783B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
- E02B8/085—Devices allowing fish migration, e.g. fish traps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses a fishway water replenishing fish luring structure. The water supply device comprises a water supply main pipe and a water distribution branch pipe; is arranged on the upper part of the left side wall of the fishway pool chamber close to the fishway inlet; one end of the water replenishing main pipe is connected with an upstream reservoir of the non-overflow dam, and the other end of the water replenishing main pipe penetrates through a fishway pond chamber in the middle of the fishway and introduces water to a fishway inlet section; one end of the water replenishing main pipe is arranged in parallel with the left side wall of the fishway pond room; seven water diversion branch pipes are distributed along the range of 40m of the fishway inlet section; the connecting branch pipes comprise a first connecting branch pipe and a second connecting branch pipe, one end of the first connecting branch pipe is communicated with the water supplementing main pipe, the other end of the first connecting branch pipe is communicated with the rubber soft joint, one end of the second connecting branch pipe is communicated with the rubber soft joint, and the other end of the second connecting branch pipe is communicated with the water distributing branch pipe; the branch water diversion pipe, the valve and the valve well are arranged in the left side wall of the fishway pool chamber, the valve well is positioned at the top of the left side wall of the fishway pool chamber, and the valve is positioned in the valve well. Has the advantages of adjusting the flow speed and the flow state of the water flow at the entrance of the fishway. The invention also discloses a water replenishing fish luring method of the fishway water replenishing fish luring structure.
Description
Technical Field
The invention relates to the field of hydraulic engineering structures, in particular to a fishway water replenishing fish luring structure. The invention also relates to a water replenishing and fish luring method of the fishway water replenishing and fish luring structure.
Background
The fishway is an artificial channel or a water tank communicated with the upstream and the downstream of the hydro-junction, and when water flows downstream along the upstream, fishes can go up against the water or down along the water in the water tank to pass through a dam; the fishway inlet is arranged at a place where running water flows out and is easy to find by fishes, and the flow speed of the place where the fishway is arranged is slightly larger than that of the nearby water flow, but cannot exceed the overcoming capacity of the fishes; now because of the lack of understanding of life habits of migratory fishes and the influence of the overall arrangement of a water conservancy project, the flow state of the inlet of a fishway is complex, the upstream fishes are not easy to find the inlet of the fishway, and the fish passing efficiency of the fishway is seriously influenced.
The flow velocity of water flow in the fishway is small, so that fish moving up in the upstream direction can easily move upwards, and the flow velocity of water flow at the inlet of the fishway is too small, so that the fish cannot easily find the inlet direction of the fishway; the fishway inlet elevation is low, the water depth is generally large, and the water flow velocity in the pond chamber can be reduced.
The existing application numbers are: 201210258976.X, the patent name is "fishway import water charging system", discloses a fishway import water charging system with better fish luring effect, and the water charging system adopts a sectional water charging mode, can simultaneously charge water for a plurality of positions of a fishway inlet, so that the flow velocity of the water at the whole fishway inlet is changed simultaneously, the flow state at the fishway inlet cannot be damaged, the flow state at the fishway inlet can be kept stable, thereby effectively attracting the fish to enter the fishway, the fish luring effect at the fishway inlet is better, but the water charging structure needs a manager to open or close valves one by one at the top of a fishway side wall so as to control the fish luring and water charging flow, rainwater is more in fish passing seasons, and the management and the operation are inconvenient.
There is a need for a fishway water-replenishing fish-luring structure and a water-replenishing fish-luring method thereof, which can adjust the flow velocity and flow state of water at the inlet of the fishway.
Disclosure of Invention
The first purpose of the invention is to provide a fishway water-replenishing fish luring structure, which can adjust the flow velocity and flow state of water flow at a fishway inlet, and utilize extra water flow to converge into the fishway inlet, so that the flow and flow velocity at the fishway inlet are increased under the condition of not increasing the overall flow velocity of a fishway chamber, water flow sound is generated, the oxygen content in inlet water is increased, fish schools are attracted, and the fish schools can be concentrated towards the fishway inlet and smoothly enter the fishway to trace back.
The second purpose of the invention is to provide a water replenishing fish luring method of the fishway water replenishing fish luring structure.
In order to achieve the first object of the present invention, the technical solution of the present invention is: fishway moisturizing lures fish structure, including moisturizing house steward, branch pipe, outlet pipe, its characterized in that: the device also comprises a connecting branch pipe, a valve and a valve well; the fishway pool is of a steel structure and is arranged on the upper part of the left side wall of the fishway pool chamber close to the fishway inlet; one end of the water replenishing main pipe is connected with an upstream reservoir of the non-overflow dam, and the other end of the water replenishing main pipe penetrates through a fishway pond chamber in the middle of the fishway and introduces water to a fishway inlet section; one end of the water replenishing main pipe is arranged in parallel with the left side wall of the fishway pool chamber; seven water diversion branch pipes are distributed along the range of 40m of the fishway inlet section; the connecting branch pipes comprise a first connecting branch pipe and a second connecting branch pipe, one end of the first connecting branch pipe is communicated with the water supplementing main pipe, the other end of the first connecting branch pipe is communicated with the rubber soft joint, one end of the second connecting branch pipe is communicated with the rubber soft joint, and the other end of the second connecting branch pipe is communicated with the water distributing branch pipe;
the branch water diversion pipe, the valve and the valve well are arranged in the left side wall of the fishway pool chamber, the valve well is positioned at the top of the left side wall of the fishway pool chamber, the valve is positioned in the valve well, and a cover plate is arranged on the valve well; the valve is arranged on the second connecting branch pipe and is positioned between the rubber soft joint and the water distribution branch pipe;
one end of the water outlet pipe is positioned in the left side wall of the fishway chamber, and the other end of the water outlet pipe extends out of the left side wall of the fishway chamber and is positioned above the chamber partition plate;
the water outlet pipe is arranged on the water diversion branch pipe and communicated with the water diversion branch pipe; one water replenishing main pipe and seven to nine water distributing branch pipes are arranged;
arranging a concrete water retaining bank on the downstream sea dam;
the non-overflow dam is located overflow dam upper reaches, and the sluicing floodgate is located overflow dam low reaches, and the fishway sets up between non-overflow dam and overflow dam.
In the technical scheme, the water outlet of the water outlet pipe is 1.05m higher than the top of the partition plate of the tank chamber.
In the technical scheme, the diameter of the connecting branch pipe is 200mm; the diameter of the water outlet pipe is 100mm.
In the technical scheme, the water replenishing main pipe is a steel pipe with the diameter of 600mm; the diameter of the water replenishing main pipe is 600mm; the length of the water replenishing header pipe is 182.4m.
In the technical scheme, eight water outlet pipes are arranged on one water diversion branch pipe, and the water outlet pipes arranged on one water diversion branch pipe are respectively positioned in two adjacent fishway pond chambers.
In the technical scheme, the water replenishing main pipe is positioned below the side of the water dividing branch pipe; the water outlet pipe is obliquely arranged, and the included angle between the water outlet pipe and the left side wall of the fishway chamber is 45 degrees.
In order to achieve the second object of the present invention, the technical solution of the present invention is: the water replenishing and fish luring method of the fishway water replenishing and fish luring structure is characterized in that: the method comprises the following steps:
step 1: installing a fishway water replenishing and fish luring structure, arranging seven water diversion branch pipes along the range of 40m of a fishway inlet section, connecting one end of a water replenishing main pipe with a non-overflow dam upstream reservoir, and leading water to the fishway inlet section by enabling the other end of the water replenishing main pipe to penetrate through a fishway chamber in the middle of a fishway;
cutting and welding the water diversion branch pipe, the water outlet pipe and the connecting branch pipe which need to be embedded in the left side wall of the concrete fishway chamber according to requirements, pouring the water diversion branch pipe, the water outlet pipe and the connecting branch pipe into the left side wall of the concrete fishway chamber when the left side wall of the concrete fishway chamber is constructed to a corresponding height, reserving a valve well at the top end of the left side wall of the fishway chamber, installing a valve and a rubber soft joint, positioning and installing a water replenishing main pipe behind the left side wall of the fishway chamber after the concrete strength of the left side wall of the fishway chamber meets the standard requirement, and connecting the water replenishing main pipe with the rubber soft joint through a first connecting branch pipe;
step 2: starting one or more sets of fishway water replenishing and attracting structures according to the water replenishing quantity and the water attracting quantity required by water replenishing and attracting, increasing the flow and the flow speed of a fishway inlet, generating water flow sound, increasing the oxygen content in water of the fishway inlet, attracting fish schools, enabling the fish schools to be concentrated towards the fishway inlet and smoothly enter the fishway for upstream migration,
when a set of fishway water replenishing fish luring structure is started, water flow in the water replenishing main pipe flows into the water diversion branch pipes through the connecting steel pipe and then is converged into two adjacent fishway pond chambers through the water outlet pipe;
when the plurality of sets of fishway water replenishing fish luring structures are started, water flow in the water replenishing main pipe flows into the water diversion branch pipes through the connecting steel pipes and then flows into the plurality of adjacent fishway pond chambers through the water outlet pipes.
In the technical scheme, in the step 2, one or more sets of fishway water replenishing fish luring structures are opened and closed through valves; the valve controls the flow of the water outlet pipe.
In the technical scheme, in the step 1, a concrete water retaining bank is arranged on the downstream sea side of the overflow dam.
The invention has the following advantages:
(1) The flow velocity and the flow state of water flow at the inlet of the fishway can be adjusted; setting a valve, and controlling the water supplement amount of the water outlet pipe by adjusting the valve so as to meet the requirements of water supplement and fish luring;
(2) Aiming at the problems of fish migration habit, adaptive water flow speed, water depth flow state and the like of white turtles, green-wave fishes and the like in a convection area, a fishway water-replenishing fish luring structure is creatively adopted, extra water flow is converged into a fishway inlet, under the condition that the overall flow rate of a fishway pool chamber is not increased, the flow and the flow rate of the fishway inlet are increased, water flow sound is generated, the oxygen content in inlet water is increased, fish herds are attracted, and the fish herds can be concentrated towards the fishway inlet and smoothly enter the fishway to trace back;
(3) The fish passing amount is large, the applicability is strong, the operation and maintenance cost is low, and no other operation cost is required except for manual management and equipment maintenance.
Drawings
FIG. 1 is a schematic plan view of the present invention.
FIG. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a left side (down stream) elevation view of the water replenishing fish attracting structure of the present invention.
Fig. 4 is a general layout of the fishway project plane of the invention.
Fig. 5 is an enlarged view of fig. 4 at a.
In the figure, 1-a fishway pond room left side wall, 2-a fishway pond room right side wall, 3-a pond room partition, 4-a water replenishing main pipe, 5-a connecting branch pipe, 5.1-a first connecting branch pipe, 5.2-a second connecting branch pipe, 6-a rubber soft joint, 7-a valve, 8-a valve well, 9-a water dividing branch pipe, 10-a water outlet pipe, 11-a fishway pond room, 12-a fishway water replenishing fish luring structure, 13-a non-overflow dam, 14-an overflow dam, 15-a sluice gate, 16-a fishway, 17-a concrete water retaining bank, 18-a fishway inlet and 19-an observation room.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the invention will be apparent and understood from the description.
With reference to the accompanying drawings: the fishway water replenishing fish luring structure comprises a water replenishing main pipe 4, a water diversion branch pipe 9 and a water outlet pipe 10, and further comprises a connecting branch pipe 5, a valve 7 and a valve well 8; the fishway pool is of a steel structure and is arranged at the upper part of a left side wall 1 of a fishway pool chamber close to a fishway inlet 18; one end of the water replenishing main pipe 4 is connected with an upstream reservoir of the non-overflow dam 13, the other end of the water replenishing main pipe passes through a fishway pond chamber 11 in the middle of a fishway 16 and leads water to an inlet section of the fishway 16, and the other end of the water replenishing main pipe is a blind end; one end of the water replenishing main pipe 4 is arranged in parallel with the left side wall 1 of the fishway pond room; seven water diversion branch pipes 9 are distributed along the 40m range of the inlet section of the fishway 16, and the number of the water diversion branch pipes 9 can be adjusted according to the required water quantity and the length of the pool chamber; the connecting branch pipe 5 comprises a first connecting branch pipe 5.1 and a second connecting branch pipe 5.2, one end of the first connecting branch pipe 5.1 is communicated with the water supplementing main pipe 4, the other end of the first connecting branch pipe is communicated with the rubber soft joint 6, one end of the second connecting branch pipe 5.2 is communicated with the rubber soft joint 6, and the other end of the second connecting branch pipe is communicated with the water distributing branch pipe 9;
the water diversion branch pipe 9, the valve 7 and the valve well 8 are arranged in the left side wall 1 of the fishway pond room, the valve well 8 is positioned at the top of the left side wall 1 of the fishway pond room, the valve 7 is positioned in the valve well 8, and a cover plate is arranged on the valve well 8; the valve 7 is arranged on the second connecting branch pipe 5.2 and is positioned between the rubber soft joint 6 and the water distribution branch pipe 9;
one end of the water outlet pipe 10 is positioned in the fishway chamber left side wall 1, and the other end extends out of the fishway chamber left side wall 1 and is positioned above the chamber partition plate 3;
the water outlet pipe 10 is arranged on the water diversion branch pipe 9 and communicated with the water diversion branch pipe 9 (as shown in fig. 1 and 3);
the number of the water replenishing main pipes 4 is one, and the number of the water distributing branch pipes 9 is seven to nine;
a concrete water retaining bank 17 is arranged on the downstream sea side of the overflow dam; the non-overflow dam 13 is located upstream of the overflow dam 14, the sluice 15 is located downstream of the overflow dam 14, and the fishway 16 is arranged between the non-overflow dam and the overflow dam (as shown in fig. 4), so that the overflow dam flows downwards to the fishway outlet; when the downstream is at a low water level, water flows always flow through the overflow dam and the fishway, and the water flow at the fishway inlet is close to the water flow of the overflow dam, so that the fish school can trace up along the water flow.
The water outlet of the water outlet pipe 10 is 1.05m higher than the top of the tank chamber partition plate 3, can be adjusted according to actual conditions, but cannot be too low or too high, has small fall when being too low, has small sound and is uneconomical when being too high; through the control valve, the water flows out from the left wall of the fishway chamber at the inlet section and falls on the water surface, and the sound is formed to attract fish school.
The diameter of the connecting branch pipe 5 is 200mm; the diameter of the water outlet pipe 10 is 100mm. The flow rate of the final effluent is calculated; the diameter is related to the actual water yield, and can be adjusted correspondingly according to the actual situation.
The water replenishing main pipe 4 is a steel pipe with the diameter of 600mm; the diameter of the water replenishing main pipe 4 is 600mm; the length of the water replenishing main pipe 4 is 182.4m, and the length of the water replenishing main pipe is determined according to the inlet position of the fishway. The number of the water outlet pipes 10 arranged on one water diversion branch pipe 9 is eight, the number of the water outlet pipes is determined according to the water replenishing flow and range of the fishway pond chambers, and the water outlet pipes 10 arranged on one water diversion branch pipe 9 are respectively positioned in two adjacent fishway pond chambers 11. The water replenishing main pipe 4 is positioned below the side of the water diversion branch pipe 9; the water outlet pipe 10 is arranged in an inclined way, and the included angle between the water outlet pipe 10 and the left side wall 1 of the fishway chamber is 45 degrees (as shown in figure 2). Used for calculating the flow of the final outlet water.
A viewing chamber 19 is provided in the fishway 16 upstream of the non-overflow dam 13.
With reference to the accompanying drawings: the water replenishing and fish luring method of the fishway water replenishing and fish luring structure is characterized in that: the method comprises the following steps:
step 1: installing a fishway water replenishing and fish luring structure, arranging seven water diversion branch pipes 9 in the range of 40m along the inlet section of a fishway 16, connecting one end of a water replenishing main pipe 4 with an upstream reservoir of a non-overflow dam 13, penetrating the other end of the water replenishing main pipe through a fishway chamber 11 in the middle of the fishway 16, and introducing water to the inlet section of the fishway 16;
cutting and welding a branch water pipe 9, a water outlet pipe 10 and a connecting branch pipe 5 which are required to be embedded in a left side wall 1 of a concrete fishway chamber according to requirements, pouring the branch water pipe 9, the water outlet pipe 10 and the connecting branch pipe 5 into the left side wall 1 of the concrete fishway chamber when the left side wall 1 of the concrete fishway chamber is constructed to a corresponding height, reserving a valve well 8 at the top end of the left side wall 1 of the fishway chamber, installing a valve 7 and a rubber soft joint 6, positioning and installing a water replenishing main pipe 4 behind the left side wall 1 of the fishway chamber after the concrete strength of the left side wall 1 of the fishway chamber reaches the standard requirement, and connecting the water replenishing main pipe 4 with the rubber soft joint 6 through a first connecting branch pipe 5.1;
step 2: one or more sets of fishway water replenishing and attracting structures are started according to the water replenishing quantity and the water attracting quantity required by fish attracting, the flow and the flow speed of the fishway inlet 18 are increased, water flow sound is generated, the oxygen content in water at the fishway inlet is increased, fish flocks are attracted, the fish flocks can concentrate towards the fishway inlet 18 and smoothly enter the fishway to trace back,
when a set of fishway water replenishing fish luring structure is started, water flow in the water replenishing main pipe 4 flows into the water diversion branch pipes 9 through the connecting branch pipes 5 and then flows into two adjacent fishway pond chambers 11 through the water outlet pipe 10;
when a plurality of sets of fishway water replenishing fish luring structures are started, water flow in the water replenishing main pipe 4 flows into the water diversion branch pipes 9 through the connecting branch pipes 5 and then flows into a plurality of adjacent fishway pond chambers 11 through the water outlet pipe 10.
In the step 2, one or more sets of fishway water replenishing fish luring structures are opened and closed through a valve 7; the valve 7 controls the flow of the water outlet pipe 10, and water flows out of the side wall of the inlet section through the control valve and falls on the water surface to form sound to attract fish school.
In step 1, a concrete water retaining dam 17 is arranged on the downstream sea floor of the overflow dam 14. (as shown in fig. 4 and 5) so that the overflow dam flows downward to the fishway outlet; when the downstream is at a low water level, water flows always flow through the overflow dam and the fishway, and the water flow at the fishway inlet is close to the water flow of the overflow dam, so that the fish school can trace up along the water flow.
Examples
The fishway water replenishing fish luring structure of the fishway of the engineering dam with a certain water level adjusting function and the water replenishing fish luring method thereof are taken as an embodiment for detailed description, and the fishway water replenishing fish luring structure of the fishway of other areas and the water replenishing fish luring method thereof also have a guiding function.
The water level regulating dam project is located at the 4.5km downstream of a county city and is constructed for reducing the environmental influence of the water level of a reservoir on the county city; the regulating dam engineering is a gate dam which mainly comprises buildings such as an earth-rock dam, a retaining wall, a sluice gate, an overflow dam, a fishway, a non-overflow dam and the like; because the construction of the regulating dam project blocks a river to bring adverse effects to the propagation of fishes such as white turtles, green wave fishes and the like in the watershed which need to migrate to upstream for spawning, the regulating dam project is used for building a fish passage as an important remedy for communicating a fish migration route in consideration of protecting natural resources of the fishes and building an ecological environment.
The flow velocity of water flow in the fishway is small, so that fish moving up in the upstream direction can easily move upwards, and the flow velocity of water flow at the inlet of the fishway is too small, so that the fish cannot easily find the inlet direction of the fishway; the fishway inlet elevation is lower, and general depth of water is great, and the velocity of water flow in the pond room can reduce, and the setting of moisturizing attracting fish structure plays the important function to adjustment velocity of water flow, flow state.
The fishway pond chamber is of a C25 buried stone concrete structure, the net width is 2.5m, the partition plates are of a C25 concrete structure, and the space between the partition plates is 3.0m.
Leading water to the vicinity of a fishway inlet 18 from the upstream of an adjusting dam along a fishway by using a water supplementing header pipe 4 with the diameter of 600mm, wherein the total length of the water supplementing header pipe 4 is 182.4m, seven sets of fishway water supplementing and fish luring structures 12 are sequentially arranged at the position close to the fishway inlet 18, the fishway water supplementing and fish luring structures are steel structures, the fishway water supplementing and fish luring structures are arranged at the upper part of a fishway chamber left side wall 1 of the fishway inlet, and the water outlet of a water outlet pipe 10 is 1.05m higher than the top of a chamber partition plate; each set of fishway water replenishing fish luring structure is communicated with a water replenishing main pipe 4 through a connecting branch pipe 5 and a rubber soft joint 6 with the diameter of 200mm respectively, eight water outlet pipes 10 are arranged on a water distribution branch pipe 9, the diameter of each water outlet pipe 10 is 100mm, the water outlet pipes 10 on the water distribution branch pipes 9 are arranged in the range of two pool chambers, and each set of fishway water replenishing fish luring structure can replenish water and lure fish in the range of two pool chambers;
a control valve 7 is arranged in front of the branch water diversion pipe 9, the valve 7 is positioned in a valve well 8 at the top of the left side wall 1 of the fishway chamber, and the valve 7 is used for opening and closing a fishway water supplementing fish luring structure; utilize extra rivers to converge in the fishway entrance, under the condition that does not increase the whole flow velocity of fishway pond room, increased the flow and the velocity of flow of fishway entrance to produce the rivers sound, increase the oxygen content in the water of entry, attract shoal, make shoal can concentrate toward the fishway entrance, get into the fishway smoothly and trace back the migration.
Other parts not described belong to the prior art.
Claims (9)
1. Fishway moisturizing lures fish structure, including moisturizing house steward (4), branch pipe (9) divide, outlet pipe (10), its characterized in that: the device also comprises a connecting branch pipe (5), a valve (7) and a valve well (8); the fishway water replenishing fish luring structure is of a steel structure and is arranged on the upper part of a left side wall (1) of a fishway pool chamber close to a fishway inlet (18); one end of the water replenishing main pipe (4) is connected with an upstream reservoir of the non-overflow dam (13), and the other end of the water replenishing main pipe penetrates through a fishway chamber (11) in the middle of the fishway and introduces water to an inlet section of the fishway (16); one end of the water replenishing main pipe (4) is arranged in parallel with the left side wall (1) of the fishway pool chamber; seven water diversion branch pipes (9) are distributed along the range of 40m of the inlet section of the fishway (16); the connecting branch pipe (5) comprises a first connecting branch pipe (5.1) and a second connecting branch pipe (5.2), one end of the first connecting branch pipe (5.1) is communicated with the water replenishing main pipe (4), the other end of the first connecting branch pipe is communicated with the rubber soft joint (6), one end of the second connecting branch pipe (5.2) is communicated with the rubber soft joint (6), and the other end of the second connecting branch pipe is communicated with the water distributing branch pipe (9);
the water diversion branch pipe (9), the valve (7) and the valve well (8) are arranged in the left side wall (1) of the fishway pool chamber, the valve well (8) is positioned at the top of the left side wall (1) of the fishway pool chamber, the valve (7) is positioned in the valve well (8), and a cover plate is arranged on the valve well (8); the valve (7) is arranged on the second connecting branch pipe (5.2) and is positioned between the rubber soft joint (6) and the water diversion branch pipe (9);
one end of the water outlet pipe (10) is positioned in the fishway chamber left side wall (1), and the other end extends out of the fishway chamber left side wall (1) and is positioned above the chamber partition plate (3);
the water outlet pipe (10) is arranged on the water distribution branch pipe (9) and is communicated with the water distribution branch pipe (9);
one water replenishing main pipe (4) and seven to nine water distributing branch pipes (9);
a concrete water retaining bank (17) is arranged on the downstream sea edge of the overflow dam (14); the non-overflow dam (13) is positioned at the upstream of the overflow dam (14), the sluice gate (15) is positioned at the downstream of the overflow dam (14), and the fishway (16) is arranged between the non-overflow dam (13) and the overflow dam (14).
2. The fishway water replenishing fish-luring structure of claim 1, wherein: the water outlet of the water outlet pipe (10) is 1.05m higher than the top of the tank chamber partition plate (3).
3. The fishway water replenishing fish-luring structure of claim 2, wherein: the diameter of the connecting branch pipe (5) is 200mm; the diameter of the water outlet pipe (10) is 100mm.
4. The fishway water replenishing fish-luring structure of claim 3, wherein: the water replenishing main pipe (4) is a steel pipe with the diameter of 600mm; the diameter of the water replenishing main pipe (4) is 600mm; the length of the water replenishing main pipe (4) is 182.4m.
5. The fishway water replenishing fish-luring structure of claim 4, wherein: eight water outlet pipes (10) are arranged on one water diversion branch pipe (9), and the water outlet pipes (10) arranged on one water diversion branch pipe (9) are respectively positioned in two adjacent fishway pond chambers (11).
6. The fishway water replenishing fish-luring structure of claim 5, wherein: the water replenishing main pipe (4) is positioned below the side of the water diversion branch pipe (9); the water outlet pipe (10) is obliquely arranged, and the included angle between the water outlet pipe (10) and the left side wall (1) of the fishway chamber is 45 degrees.
7. The water replenishing fish-luring method of the fishway water replenishing fish-luring structure of any one of claims 1 to 6, wherein: the method comprises the following steps:
step 1: installing a fishway water replenishing and fish luring structure, arranging seven water distribution branch pipes (9) along the range of 40m of an inlet section of a fishway (16), connecting one end of a water replenishing main pipe (4) with an upstream reservoir of a non-overflow dam (13), and leading water to the inlet section of the fishway (16) by enabling the other end of the water replenishing main pipe to penetrate through a fishway pool chamber (11) in the middle of the fishway (16);
cutting and welding a water diversion branch pipe (9), a water outlet pipe (10) and a connecting branch pipe (5) which need to be buried in a left side wall (1) of a concrete fishway pool room as required for forming, pouring the water diversion branch pipe (9), the water outlet pipe (10) and the connecting branch pipe (5) into the left side wall (1) of the concrete fishway pool room when the left side wall (1) of the concrete fishway pool room is constructed to a corresponding elevation, reserving a valve well (8) at the top end of the left side wall (1) of the fishway pool room, installing a valve (7) and a rubber soft joint (6), positioning and installing a water replenishing main pipe (4) at the back of the left side wall (1) of the fishway pool room after the concrete strength of the left side wall (1) of the fishway pool room reaches the specification requirement, and connecting the water replenishing main pipe (4) with the rubber soft joint (6) through a first connecting branch pipe (5.1);
and 2, step: one or more sets of fishway water replenishing and fish luring structures are started according to the water replenishing quantity and the fish luring quantity required by water replenishing and fish luring, the flow and the flow speed of a fishway inlet (18) are increased, water flow sound is generated, the oxygen content in water of the fishway inlet is increased, fish flocks are attracted, the fish flocks can concentrate towards the fishway inlet (18) and smoothly enter the fishway to trace and migrate,
when a set of fishway water replenishing fish luring structure is started, water flow in the water replenishing main pipe (4) flows into the water diversion branch pipes (9) through the connecting branch pipes (5) and then is converged into two adjacent fishway pond chambers (11) through the water outlet pipe (10);
when a plurality of sets of fishway water replenishing fish luring structures are started, water flow in the water replenishing main pipe (4) flows into the water diversion branch pipes (9) through the connecting branch pipes (5) and then is converged into a plurality of adjacent fishway pond chambers (11) through the water outlet pipe (10).
8. The water replenishing fish luring method of the fishway water replenishing fish luring structure according to claim 7, wherein: in the step 2, one or more sets of fishway water replenishing fish luring structures are opened and closed through a valve (7); the valve (7) controls the flow of the water outlet pipe (10).
9. The water replenishing fish luring method of the fishway water replenishing fish luring structure of claim 8, wherein: in the step 1, a concrete water retaining bank (17) is arranged on the downstream sea side of the overflow dam (14).
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| CN110725272A (en) * | 2019-04-29 | 2020-01-24 | 贵州省水利投资(集团)有限责任公司 | Fish luring method by using raw water of breeding station |
| CN113774867B (en) * | 2021-08-18 | 2023-05-05 | 中国电建集团华东勘测设计研究院有限公司 | Fishway pool chamber water supplementing system under high water head and large drop effect |
| CN115726331B (en) * | 2022-11-21 | 2024-05-28 | 三峡大学 | Fishway system with comprehensive water supplementing, desilting, detecting and water level adapting functions |
| CN116163262B (en) * | 2023-02-18 | 2024-06-11 | 四川大学 | Method for improving bifurcate river water flow conditions through ecological water supplementing port combined with overflow dam |
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| CN105386427B (en) * | 2015-11-13 | 2017-10-24 | 中国电建集团成都勘测设计研究院有限公司 | Fish pass moisturizing attracting system |
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