CN115977041A - Adjustable short-distance fishway system - Google Patents
Adjustable short-distance fishway system Download PDFInfo
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- CN115977041A CN115977041A CN202211717902.8A CN202211717902A CN115977041A CN 115977041 A CN115977041 A CN 115977041A CN 202211717902 A CN202211717902 A CN 202211717902A CN 115977041 A CN115977041 A CN 115977041A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 169
- 241000251468 Actinopterygii Species 0.000 claims abstract description 70
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 29
- 230000003020 moisturizing effect Effects 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000013508 migration Methods 0.000 abstract description 27
- 230000005012 migration Effects 0.000 abstract description 27
- 230000000903 blocking effect Effects 0.000 description 21
- 230000000694 effects Effects 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
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- 238000009825 accumulation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001617 migratory effect Effects 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The invention discloses an adjustable short-distance fishway system which comprises a fish inlet positioned in a river at the downstream side of a dam, a water replenishing pool positioned at the upstream side of the dam and a fishway connected between the fish inlet and the water replenishing pool, wherein a connecting channel is arranged between the water replenishing pool and the river at the upstream side of the dam. The invention has the advantages of simple structure, shorter fish migration distance, capability of adjusting according to different water flow situations, better utilization of fish passing and the like.
Description
Technical Field
The invention relates to the technical field of environmental ecological protection, in particular to an adjustable short-distance fishway system.
Background
With the gradual decrease of the current non-renewable energy sources, the development and utilization of renewable clean energy sources are more and more emphasized, wherein hydroelectric power generation is a common renewable clean energy source. Many river courses with high fall all begin to build dams to store water and generate electricity. However, the building of the dam hinders the migration of fishes, and a fishway needs to be built beside the dam to facilitate the migration of a large amount of fishes which migrate and lay eggs. A fishway, which is a channel for fish migration constructed by human beings, is an artificial water tank building, and is a remedy measure taken because human activities destroy the channel for fish migration, and the migration habit of fish is generally protected by constructing an artificial water tank on a sluice or a dam.
The existing fishway design mainly considers the upward habit of fishes. Downstream of the lock dam, fish often enter the fishway by means of the attraction of water flow. The fishes need to overcome the flow velocity to upstream by self power in the fishway. The descending fish can flow downwards through the fishway.
Fishways are classified into pool type fishways, groove type fishways and the like according to structural forms. The pool type fishway is composed of a series of pools connected with the upper and lower streams, is very close to a natural river channel, but has small applicable water head and large occupied area, so the applicability is limited. The groove type fishway is divided into a simple groove type, a denier type and a transverse clapboard type. The simple groove type fishway is a water tank connected with the upper and lower streams, the gradient of the water channel is very slow, and the simple groove type fishway is suitable for a hydro junction with a very small water head and is rarely used practically. The Belgium daniel firstly arranges a baffle plate and a sill which are closely spaced at the bottom of the groove wall of the groove-type fishway, and the energy dissipation and the deceleration are called as the daniel type fishway. The fishway is suitable for passing powerful fishes and hubs with low water head. Transverse partition type fishway the transverse partition type fishway mainly comprises an inlet, a pool chamber and an outlet. The fish way utilizes water cushion, friction resistance along the way and water flow opposite impact and diffusion to dissipate energy, improve flow state, reduce flow speed of fish passing holes, and adjust the form, position and size of the fish passing holes to meet the requirements of different habits of fish. The structure is simple, the maintenance is convenient, and most of modern fishways adopt the form.
Therefore, in the existing fishway structure, the fishway is divided into a plurality of sections according to the design concept of the fishway of a high dam, each section is provided with a blocking structure to form a pool chamber, and the pool chambers form spaces for buffering and rest of fishes, so that the fishes can move upwards along the pool chambers in a one-level-to-one manner until finally passing through the whole fishway. However, in the conventional fishway structure, the water flow between every two adjacent pond chambers is still relatively urgent, the fishes need to spend relatively large force to rush through the torrent to reach the pond chambers at the upper stage, the fishes still need to pass through the whole fishway difficultly, and the energy consumption is excessive. Meanwhile, the existing fishway structure is usually in a fixed state, cannot be adjusted according to conditions, and is difficult to better adapt to various different water flow conditions.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a simple structure, the adjustable short distance fishway system that fish migration is current more convenient and laborsaving to further make it can adjust according to different rivers live, pass through in order to better being favorable to the fish.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a short distance fishway system with adjustable, including the fish inlet that is located dam downstream side river, be located the moisturizing pond of dam upstream side and connect the fishway between fish inlet and moisturizing pond, connect the passageway between moisturizing pond and the dam upstream river, a serial communication port, the left and right sides respectively has a straight wall arc wall that sets up to the outside of slant in the fishway, straight wall arc wall includes the straight wall section that the outside below of slant set up, straight wall section lower extreme links up has an incurvated arc section, the crooked ascending direction of returning in arc section inner and links up with the straight wall section upper end of next straight wall arc wall, the dislocation set from top to bottom of the straight wall arc wall of the left and right sides in the fishway, straight wall arc wall inside have one with straight wall section and the equal interval of arc section reposition of redundant personnel that sets up of redundant personnel.
Like this, the unique structure of straight wall arc wall that both sides set up in the fishway, rivers can be separated for inside and outside two water flows by the reposition of redundant personnel after entering into straight wall arc wall, and the interval between the rivers in the outside is down acted on by the arc section with the interval between the reposition of redundant personnel circuitous redirecting for upwards and with inboard rivers striking, have greatly slowed down the rivers speed of straight wall arc wall lower extreme exit like this. Therefore, the situation that the fish are difficult to cross due to the fact that the common fishway can form a rapid stream at the outlet of each spaced fishpond is opposite to the situation that the fish cannot cross the rapid stream, the fish can easily cross the outlet of the straight-wall arc-shaped groove to swim upwards, and the straight-wall arc-shaped groove is easier and labor-saving.
Further, a water supplementing system used for guaranteeing the water level is further arranged in the water supplementing pool. Like this, assurance upstream water level that can be better guarantees to have enough rivers in the fish way in order to supply fish migration.
Furthermore, the water replenishing system comprises a water inlet pipe, the water outlet end of the water inlet pipe is positioned in the water replenishing pool, and a ball float valve is arranged at the water outlet end. Therefore, the water level in the water replenishing tank can be conveniently controlled by adopting the ball float valve, and the water supply to the fishway is ensured.
Furthermore, a partition wall is arranged between the water replenishing pool and the upstream river channel of the dam, the connecting channel is positioned on the partition wall, and a channel gate valve used for controlling the opening and closing of the connecting channel is further installed on the partition wall.
Like this, when the upstream river course water level is far above or is less than normal water level, can start the passageway gate valve and close interface channel, rely on water charging system to guarantee and control the water supply to the fishway, earlier gathering in the pond after the fish migration reaches the moisturizing pond, open once more after a period gate valve intercommunication upstream river course and supply fish to swim out. Therefore, the problem that the fishway is difficult to normally operate in the dry period or the water expansion period due to the influence of the water level is solved. Ensuring the long-term stable operation of the fishway.
Furthermore, the upper end points and the lower end points of the straight wall arc-shaped grooves on the two sides of the fishway are arranged at intervals between the connecting lines.
After the straight-wall arc-shaped grooves on the two sides of the fishway are arranged at intervals, a part of water flow can flow downwards along the middle position between the straight-wall arc-shaped grooves on the two sides, and meanwhile, the flow speed of the part of water flow is very slow under the impact of backflow water flowing back upwards through the arc section at the lower end of each straight-wall arc-shaped groove on the two sides, so that three paths, namely two fast water flow channels positioned in the straight-wall arc-shaped grooves on the two sides and one slow water flow channel positioned in the right middle of the fishway, can be formed in the fishway. The slow water flow channel in the middle forms a fish migration channel, the flow speed of the channel is slow, the path is short, fishes can swim upwards in the channel without difficulty, the fish swimming channel is separated from the water flow channel, and the success rate, speed and efficiency of fish migration are greatly improved. The term "short-distance fishway" also refers to the migration of fish from an intermediate slow water flow path, so that the migration path is shortened, and is not limited to the length of the fishway.
Furthermore, the respective connecting lines of the upper end points and the lower end points of the straight-wall arc-shaped grooves on the two sides of the fishway form two parallel straight lines.
Therefore, the formation of the path of the middle slow water flow channel can be better ensured, meanwhile, the fishes can be well prevented from carelessly and mistakenly entering the fast water flow channels on the two sides during the migration of the middle slow water flow channel, and the migration effect is better improved.
Furthermore, the flow distribution body is provided with a long side which is arranged in parallel with the straight wall section of the straight wall arc-shaped groove at an interval and a short side which is arranged in parallel with the long side, the lower ends of the long side and the short side are linked with an arc side which is arranged in parallel with the arc section of the straight wall arc-shaped groove at an interval, and the lower ends of the long side and the short side are linked with an oblique side which is parallel with the straight wall section of the straight wall arc-shaped groove at the other side.
Thus, the flow dividing body can better achieve the required flow dividing effect. Specifically, after the upper water flow impacts the flow divider downwards, the water flow on the outer side flows downwards rapidly between the long side edge of the flow divider and the straight wall section of the straight wall arc-shaped groove, and a rapid water flow channel is formed. The water flow which is divided to the inner side by the dividing body is guided by the inclined side of the dividing body which is arranged in parallel and the straight wall section of the straight wall arc-shaped groove on the other side, the water flow which flows downwards along the direction of the straight wall section of the straight wall arc-shaped groove on the other side can be formed, the part of the water flow which is close to the middle position can be impacted by the upward backflow generated by the arc-shaped section of the straight wall arc-shaped groove on the self side, the speed is reduced, and a slow water flow channel is formed, and the water flow which is close to the outer side in the water flow can enter the straight wall arc-shaped groove on the other side. Meanwhile, the arrangement direction of the straight-wall arc-shaped groove is the oblique outward direction, so that upward backflow generated from the arc section of the straight-wall arc-shaped groove on the side of the straight-wall arc-shaped groove is changed in direction by impact after being impacted by middle water flow, and then the water flow enters the straight-wall arc-shaped groove on the other side to be converged and accelerate the water flow speed of the straight-wall arc-shaped groove, so that a rapid water flow channel on the side is formed. And sequentially reciprocating downwards until the whole fishway is finished. Therefore, the flow dividing body with the specific structure can better guide water flow so as to better promote the formation of two fast-one slow-three water flow channel paths and ensure the accuracy and reliability of the three water flow channels so that the migratory fishes can complete the migration in the middle slow-speed water flow channel.
Further, the straight wall section upper end position in the straight wall arc wall still is provided with the flexible adjusting device of cisoid, the flexible adjusting device of cisoid includes that a laminating sets up the flexible regulating plate of cisoid in straight wall section upper end position, the cisoid has seted up the cisoid in the same direction as the fishway direction on the flexible regulating plate of cisoid, the cisoid regulation screw has still been seted up on the straight wall section lateral wall that the bar is downthehole to the cisoid regulation, still including the cisoid adjusting bolt, the cisoid adjusting bolt passes cisoid regulation bar hole and the cisoid regulation screw fixes the flexible regulating plate in straight wall section upper end position.
Like this, can adjust and make the flexible regulating plate front end of cisoid stretch out straight wall section upper end one section distance in the straight wall arc wall forward, and then adjust straight wall arc wall to backward flow guiding length's size forward of backward flow water, and then adjust the size of backward flow water to the rivers impact force of middle slow velocity of flow passageway, and then can adjust the velocity of flow when middle slow velocity of flow passageway passes through this straight wall arc wall position department as required. Therefore, the flow speed of the middle slow water flow channel can be adjusted according to the requirement. For example, when the fishway is too long and too high, the flow velocity of water flow at the lower part is usually accelerated under the action of gravity accumulation, and the water depth is reduced, so that the forward telescopic adjusting device can be adopted for adjustment, and the flow velocity of the water flow at each position above and below the fishway is close to the same. For example, the water level can be effectively adjusted to match the water level condition in seasons with different water levels. Meanwhile, the forward telescopic adjusting device has the advantages of simple structure and convenience in adjustment.
Furthermore, the depths of the straight wall sections in the forward telescopic adjusting plate and the straight wall arc-shaped groove are equal. The adjusting effect is better guaranteed.
Further, the unsettled setting in cisoid flexible regulating plate front end lower part makes cisoid flexible regulating plate front end upper portion form one and hangs roof beam portion, hangs the roof beam on still vertically be provided with a vertical flexible regulating plate, is provided with vertical regulation bar hole on the vertical flexible regulating plate, still is provided with vertical regulation screw on the roof beam portion of hanging in the vertical regulation bar hole, still is provided with vertical adjusting bolt and passes vertical regulation bar hole and vertical regulation screw and fix vertical flexible regulating plate on the cisoid flexible regulating plate.
Like this, can be through adjusting the height position of vertical flexible regulating plate on the flexible regulating plate of cisoid for the flexible regulating plate front end lower part of cisoid can form one and cross the fish breach, and can adjust the size of this breach in a flexible way. Therefore, the straight wall arc-shaped groove is arranged obliquely and externally, so that the width of the middle slow water flow channel can be actually shortened after the forward telescopic adjusting plate extends forwards for adjustment. Therefore, after the structure is added, the middle slow water flow channel can be formed with different widths in the vertical direction, so that the slow water flow channel can be formed with different flow velocities in the height direction. Therefore, the device can be more suitable for migration of fishes with different flow speed requirements. Meanwhile, the device has the effect of simple, convenient and quick adjusting structure.
Furthermore, the suspension part at the lower part of the front end of the forward telescopic adjusting plate is in a step shape. Therefore, according to the principle, the layering with various different flow rates can be formed in the slow water flow channel in the middle of the fishway in an adjusting mode, and migration of fishes with different flow rate requirements can be better met.
Further, a flow blocking structure is further arranged in the channel between the straight wall section in the straight wall arc-shaped groove and the long side of the flow divider, the flow blocking structure comprises two rows of flow blocking partition bodies arranged on the side walls on two sides of the channel at intervals, the flow blocking partition bodies are obliquely fixed on the side walls on two sides of the channel along the front lower portion, the two rows of flow blocking partition bodies are staggered from front to back and are arranged at intervals, a flow blocking spacer body is further arranged in the middle of each row of flow blocking partition bodies between two adjacent flow blocking partition bodies, and the flow blocking spacer body and the flow blocking partition bodies are arranged at intervals in parallel and are arranged at intervals with the side walls of the channel.
Therefore, water flow entering the straight wall section in the straight wall arc-shaped groove and between the shunting bodies can enter the straight wall section along the flow blocking partition bodies on the two sides, and under the shunting action of the flow blocking partition bodies, the water flow on the outer side is enabled to form backflow under the action of the next flow blocking partition body, impact is formed on the water flow in the middle of the water flow blocking partition body, and a great flow blocking effect is achieved. Therefore, the phenomenon that the water demand for the operation of the fishway is increased due to the fact that the flow speed of the rapid water flow channels on the two sides of the fishway is too high can be prevented, and the consumption of the water is reduced. Meanwhile, the fish which accidentally enters the quick water flow channels on the two sides can not be injured due to too quick water flow.
Further, still including connecting the fishway device between pond and the fish inlet, the fishway device includes the bottom plate of a rectangular shape, and the bottom plate upper surface is provided with the fishway. Thus, the fishway is arranged on the bottom plate to form an independent device product, so that prefabrication of the fishway device can be completed in advance, and then the fishway device is directly installed and constructed on site, so that the construction efficiency is greatly improved, and the construction consistency is improved.
Further, the bottom plate is a prefabricated member of a concrete structure. Thus facilitating the prefabrication production.
In conclusion, the invention has the advantages of simple structure, more convenient and labor-saving fish migration and passing, capability of adjusting according to different water flow situations, better utilization of fish passing and the like.
Drawings
Fig. 1 is a schematic plan view of the adjustable short-distance fishway system of the invention in the top view.
FIG. 2 is a schematic view showing the front view of the adjustable short-distance fishway system of the present invention
Fig. 3 is a schematic structural view of the single refill tank in fig. 1 after being enlarged.
Fig. 4 is a schematic structural view of the fishway device in fig. 1.
Fig. 5 is a schematic view of the structure of a single small section of the fishway in fig. 1.
Fig. 6 is a schematic view of the structure of a single straight-walled arcuate slot of fig. 1.
Fig. 7 is a front view of the single forward telescoping adjustment device of fig. 1.
Fig. 8 is a schematic view of the vertically telescopic adjustment plate of fig. 7 adjusted upward.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
The specific implementation mode is as follows: referring to fig. 1-8, an adjustable short distance fishway system comprises a fish inlet 1 of a river at the downstream side of a dam 4, a water replenishing pool 2 at the upstream side of the dam and a fishway 3 connected between the fish inlet 1 and the water replenishing pool 2, wherein a connecting channel is arranged between the water replenishing pool 2 and the river at the upstream side of the dam 4, and the adjustable short distance fishway system is characterized in that a row of straight wall arc-shaped grooves 5 which are obliquely and outwards arranged are respectively arranged at the left side and the right side in the fishway, each straight wall arc-shaped groove 5 comprises a straight wall section 6 which is obliquely and outwards arranged at the lower part, an arc-shaped section 7 which is inwards bent is connected at the lower end of each straight wall section 6, the inner end of each arc-shaped section 7 is bent and returns to the upward direction and is connected with the upper end of the straight wall section of the next straight wall arc-shaped groove, the straight wall arc-shaped grooves 5 at the left side and the right side in the fishway 3 are vertically staggered, and the straight wall arc-shaped grooves 5 are internally provided with a shunting body 8 which is arranged at intervals with the straight wall sections 6 and the arc-shaped sections 7.
Like this, the unique structure of straight wall arc wall that both sides set up in the fishway, rivers can be separated for inside and outside two water flows by the reposition of redundant personnel after entering into straight wall arc wall, and the interval between the rivers in the outside is down acted on by the arc section with the interval between the reposition of redundant personnel circuitous redirecting for upwards and with inboard rivers striking, have greatly slowed down the rivers speed of straight wall arc wall lower extreme exit like this. Therefore, the situation that the fish are difficult to cross due to the fact that the common fishway can form a rapid stream at the outlet of each spaced fishpond is opposite to the situation that the fish cannot cross the rapid stream, the fish can easily cross the outlet of the straight-wall arc-shaped groove to swim upwards, and the straight-wall arc-shaped groove is easier and labor-saving.
Wherein, still be provided with the water charging system who is used for guaranteeing the water level in the moisturizing pond 2. Like this, assurance upstream water level that can be better guarantees to have enough rivers in the fish way in order to supply fish migration.
Wherein, the water charging system comprises a water inlet pipe 9, the water outlet end of the water inlet pipe is positioned in the water charging pool, and a ball float valve 10 is arranged at the water outlet end. Therefore, the water level in the water replenishing tank can be conveniently controlled by adopting the ball float valve, and the water supply to the fishway is ensured.
Wherein, be provided with the partition wall between moisturizing pond 2 and the dam upper reaches river course, the connecting channel is located the partition wall, still installs the passageway gate valve 11 that is used for controlling the connecting channel switching on the partition wall.
Therefore, when the upstream river channel water level is far higher than or lower than the normal water level, the channel gate valve can be started to close the connecting channel, the water supply to the fish way is guaranteed and controlled by the water supplementing system, the fishes are gathered in the pond after migrating to the water supplementing pond, and the gate valve is opened once again after a period of time to communicate with the upstream river channel for the fishes to swim out. Therefore, the problem that the fishway is difficult to normally operate due to the influence of water level in the dry water period or the water expansion period is solved. The long-term stable operation of the fishway is ensured.
Wherein, the upper end points and the lower end points of the straight wall arc-shaped grooves 5 at the two sides of the fishway 3 are arranged at intervals between the respective connecting lines (see figure 5).
After the straight-wall arc-shaped grooves on the two sides of the fishway are arranged at intervals, a part of water flow can flow downwards along the middle position between the straight-wall arc-shaped grooves on the two sides, and meanwhile, the flow speed of the part of water flow is very slow under the impact of backflow water flowing back upwards through the arc-shaped section at the lower end of each straight-wall arc-shaped groove on the two sides, so that three paths of two fast water flow channels positioned in the straight-wall arc-shaped grooves on the two sides and one slow water flow channel positioned in the middle of the fishway can be formed in the fishway. Such an intermediate slow water flow path (i.e., a position between two dotted lines in fig. 5) forms a fish migration path, which is not only slow in flow speed but also short in path, so that fish can swim upwards without difficulty, thus separating the fish swimming from the water flow path, and greatly improving success rate, speed and efficiency of fish migration.
Wherein, the respective connecting lines of the upper end point and the lower end point of the straight wall arc-shaped grooves at the two sides of the fishway 3 form two parallel straight lines (see fig. 5).
Therefore, the formation of the path of the middle slow water flow channel can be better ensured, meanwhile, the fishes can be well prevented from carelessly and mistakenly entering the fast water flow channels on the two sides during the migration of the middle slow water flow channel, and the migration effect is better improved.
The splitter 8 is provided with a long side arranged in parallel with the straight wall section 6 of the straight wall arc-shaped groove at the position, and a short side arranged in parallel with the long side, the lower ends of the long side and the short side are connected with an arc side arranged in parallel with the arc section 7 of the straight wall arc-shaped groove at a corresponding interval, and the lower ends of the long side and the short side are connected with a slant side parallel with the straight wall section of the straight wall arc-shaped groove at the other side.
Thus, the flow dividing body can better achieve the required flow dividing effect. Specifically, after the upper water flow impacts the flow divider downwards, the water flow on the outer side flows downwards rapidly between the long side edge of the flow divider and the straight wall section of the straight wall arc-shaped groove, and a rapid water flow channel is formed. The water flow which is divided to the inner side by the dividing body is guided by the inclined side of the dividing body which is arranged in parallel and the straight wall section of the straight wall arc-shaped groove on the other side, the water flow which flows downwards along the direction of the straight wall section of the straight wall arc-shaped groove on the other side can be formed, the part of the water flow which is close to the middle position can be impacted by the upward backflow generated by the arc-shaped section of the straight wall arc-shaped groove on the self side, the speed is reduced, and a slow water flow channel is formed, and the water flow which is close to the outer side in the water flow can enter the straight wall arc-shaped groove on the other side. Meanwhile, the arrangement direction of the straight-wall arc-shaped groove is the oblique outward direction, so that upward backflow generated from the arc section of the straight-wall arc-shaped groove on the side of the straight-wall arc-shaped groove is changed in direction by impact after being impacted by middle water flow, and then the water flow enters the straight-wall arc-shaped groove on the other side to be converged and accelerate the water flow speed of the straight-wall arc-shaped groove, so that a rapid water flow channel on the side is formed. And sequentially reciprocating downwards until the whole fishway is finished. Therefore, the flow dividing body with the specific structure can better guide water flow so as to better promote the formation of two fast-one slow-three water flow channel paths and ensure the accuracy and reliability of the three water flow channels so that the migratory fishes can complete the migration in the middle slow-speed water flow channel.
Wherein, 6 upper end positions of straight wall section in the straight wall arc wall still are provided with the flexible adjusting device of cisoid, the flexible adjusting device of cisoid includes that a laminating sets up the flexible regulating plate 14 of cisoid at straight wall section upper end position, the cisoid regulation bar hole has been seted up in the same direction as the fishway direction on the flexible regulating plate 14 of cisoid, the cisoid regulation screw hole has still been seted up on the downthehole straight wall section lateral wall that corresponds of cisoid regulation bar, still including cisoid adjusting bolt 15, cisoid adjusting bolt passes the cisoid and adjusts the bar hole and fix the flexible regulating plate of cisoid at 6 upper end positions of straight wall section with the cisoid regulation screw.
Like this, can adjust and make the flexible regulating plate front end of cisoid stretch out straight wall section upper end one section distance in the straight wall arc wall forward, and then adjust straight wall arc wall to backward flow guiding length's size forward of backward flow water, and then adjust the size of backward flow water to the rivers impact force of middle slow velocity of flow passageway, and then can adjust the velocity of flow when middle slow velocity of flow passageway passes through this straight wall arc wall position department as required. Therefore, the flow speed of the middle slow water flow channel can be adjusted according to the requirement. For example, when the fishway is too long and too high, the flow velocity of the water flow at the lower part is accelerated under the action of gravity accumulation, and the water depth is reduced, so that the forward telescopic adjusting device can be adopted for adjustment, and the flow velocity of the water flow at each position above and below the fishway is approximately the same. For example, the water level can be effectively adjusted to match the water level condition in seasons with different water levels. Meanwhile, the forward telescopic adjusting device has the advantages of simple structure and convenience in adjustment.
Wherein, the depth of the straight wall section 6 in the straight wall arc-shaped groove is equal to that of the forward telescopic adjusting plate 14. The adjusting effect is better guaranteed.
Wherein, the unsettled setting in 14 front end lower parts of consequent flexible regulating plate makes consequent flexible regulating plate front end upper portion form one and hangs the roof beam portion, hang and still vertically be provided with a vertical flexible regulating plate 13 on the roof beam, be provided with vertical regulation bar hole on the vertical flexible regulating plate 13, still be provided with vertical regulation screw on the downthehole roof beam portion that hangs of vertical regulation bar, still be provided with vertical adjusting bolt 16 and pass vertical regulation bar hole and vertical regulation screw and fix vertical flexible regulating plate on consequent flexible regulating plate.
Therefore, the height position of the vertical telescopic adjusting plate on the forward telescopic adjusting plate can be adjusted, so that a fish passing notch can be formed in the lower part of the front end of the forward telescopic adjusting plate, and the size of the notch can be flexibly adjusted. Therefore, the straight wall arc-shaped groove is arranged obliquely and externally, so that the width of the middle slow water flow channel can be actually shortened after the forward telescopic adjusting plate extends forwards for adjustment. Therefore, after the structure is added, the middle slow water flow channel can be formed with different widths in the vertical direction, so that the slow water flow channel can be formed with different flow velocities in the height direction. Therefore, the device can be more suitable for migration of fishes with different flow speed requirements. Meanwhile, the device has the effect of simple, convenient and quick adjustment structure.
Wherein, the hanging part at the lower part of the front end of the forward telescopic adjusting plate 14 is in a step shape. Therefore, according to the principle, the layering with various different flow rates can be formed in the slow water flow channel in the middle of the fishway in an adjusting mode, and migration of fishes with different flow rate requirements can be better met.
Wherein, still be provided with the choked flow structure in the passageway between the long avris of straight wall section 6 and reposition of redundant personnel 8 in the straight wall arc wall, the choked flow structure includes that the interval sets up two rows of choked flow on the lateral wall of passageway both sides and separates the body 17, and the choked flow separates the body and fixes on the lateral wall of passageway both sides along preceding below slant, and two rows of choked flow separate the body 17 around misplace each other and the centre is separated by the setting, and the central point puts still is provided with a choked flow spacer 18 between two adjacent choked flow separate the body in each row of choked flow separate the body, and choked flow spacer and choked flow separate the body parallel interval setting and separate the setting with the passageway lateral wall.
Therefore, water flow entering the straight wall section in the straight wall arc-shaped groove and between the shunting bodies can enter the straight wall section along the flow blocking partition bodies on the two sides, and under the shunting action of the flow blocking partition bodies, the water flow on the outer side is enabled to form backflow under the action of the next flow blocking partition body, impact is formed on the water flow in the middle of the water flow blocking partition body, and a great flow blocking effect is achieved. Therefore, the phenomenon that the water demand for the operation of the fishway is increased due to the fact that the flow speed of the rapid water flow channels on the two sides of the fishway is too high can be prevented, and the consumption of the water is reduced. Meanwhile, fishes which accidentally enter the rapid water flow channels on the two sides cannot be injured due to too fast water flow.
The fishway device comprises a strip-shaped bottom plate 19, and the upper surface of the bottom plate 19 is provided with the fishway 3. Thus, the fishway is arranged on the bottom plate to form an independent device product, so that prefabrication of the fishway device can be completed in advance, and then the fishway device is directly installed and constructed on site, so that the construction efficiency is greatly improved, and the construction consistency is improved.
Wherein the bottom plate 19 is a prefabricated member of a concrete structure. Thus facilitating the prefabrication production.
Claims (10)
1. The utility model provides a short distance fishway system with adjustable, including the fish inlet that is located dam downstream side river, be located the moisturizing pond of dam upstream side and connect the fishway between fish inlet and moisturizing pond, connect the passageway between moisturizing pond and the dam upstream river, a serial communication port, the left and right sides respectively has a straight wall arc wall that sets up to the outside of slant in the fishway, straight wall arc wall includes the straight wall section that the outside below of slant set up, straight wall section lower extreme links up has an incurvated arc section, the crooked ascending direction of returning in arc section inner and links up with the straight wall section upper end of next straight wall arc wall, the dislocation set from top to bottom of the straight wall arc wall of the left and right sides in the fishway, straight wall arc wall inside have one with straight wall section and the equal interval of arc section reposition of redundant personnel that sets up of redundant personnel.
2. The adjustable short-range fishway system of claim 1, wherein a water-replenishing system for ensuring water level is further provided in the water-replenishing tank.
3. The adjustable short-range fishway system of claim 2, wherein the water replenishing system comprises a water inlet pipe, the water outlet end of the water inlet pipe is positioned in the water replenishing tank, and a ball float valve is arranged at the water outlet end;
a partition wall is arranged between the water replenishing pool and the upstream river channel of the dam, the connecting channel is positioned on the partition wall, and a channel gate valve used for controlling the opening and closing of the connecting channel is further installed on the partition wall.
4. The adjustable short-range fishway system of claim 1, wherein the straight-walled arc-shaped grooves on both sides of the fishway are spaced from each other along the line connecting the upper and lower ends thereof.
5. The adjustable short-range fishway system of claim 4, wherein the line connecting the upper end point and the lower end point of the straight-walled arc-shaped groove on both sides of the fishway forms two parallel straight lines.
6. The adjustable short fish track system as claimed in claim 4, wherein the shunting body has a long side disposed in parallel with the straight wall section of the straight wall arc-shaped groove and a short side disposed in parallel with the long side, the long side and the short side having lower ends connected to an arc side disposed in corresponding spaced relation to the arc section of the straight wall arc-shaped groove, and the long side and the short side having lower ends connected to a slant side disposed in parallel with the straight wall section of the straight wall arc-shaped groove.
7. The adjustable short-distance fishway system as claimed in claim 4, wherein a forward telescopic adjusting device is further arranged at the upper end of the straight wall section in the straight wall arc-shaped groove, the forward telescopic adjusting device comprises a forward telescopic adjusting plate attached to the upper end of the straight wall section, a forward adjusting strip-shaped hole is formed in the forward telescopic adjusting plate along the fishway direction, a forward adjusting screw hole is further formed in the side wall of the straight wall section corresponding to the forward adjusting strip-shaped hole, and a forward adjusting bolt passes through the forward adjusting strip-shaped hole and the forward adjusting screw hole to fix the forward telescopic adjusting plate at the upper end of the straight wall section.
8. The adjustable short-range fishway system of claim 7, wherein the depth of the straight wall segment in the straight wall arc-shaped groove is equal to the depth of the straight wall segment in the straight wall arc-shaped groove;
the unsettled setting in cisoid flexible regulating plate front end lower part makes cisoid flexible regulating plate front end upper portion form one and hangs roof beam portion, hangs the roof beam on still vertically be provided with a vertical flexible regulating plate, is provided with vertical regulation bar hole on the vertical flexible regulating plate, still is provided with vertical regulation screw on the downthehole portion of hanging roof beam of vertical regulation bar, still is provided with vertical adjusting bolt and passes vertical regulation bar hole and vertical regulation screw and fix vertical flexible regulating plate on the flexible regulating plate of cisoid.
9. The adjustable short-range fishway system of claim 8, wherein the lower suspension of the front end of the forward telescoping adjustment plate is stepped.
10. The adjustable short-range fishway system as claimed in claim 4, wherein a flow-resisting structure is further arranged in the passageway between the straight wall section in the straight-wall arc-shaped groove and the long side of the splitter, the flow-resisting structure comprises two rows of flow-resisting partitions which are arranged on the side walls on both sides of the passageway at intervals, the flow-resisting partitions are obliquely fixed on the side walls on both sides of the passageway along the front and the lower directions, the two rows of flow-resisting partitions are staggered from the front to the back and are arranged at intervals, a flow-resisting partition is further arranged in the middle between two adjacent flow-resisting partitions in each row of flow-resisting partitions, and the partition and the flow-resisting partition are arranged in parallel at intervals and are arranged at intervals with the side walls of the passageway.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211717902.8A CN115977041B (en) | 2022-12-30 | 2022-12-30 | Adjustable short-range fishway system |
| CN202410674132.6A CN118309023A (en) | 2022-12-30 | 2022-12-30 | Forward expansion adjusting device for straight wall arc-shaped groove of short-distance fishway system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211717902.8A CN115977041B (en) | 2022-12-30 | 2022-12-30 | Adjustable short-range fishway system |
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| CN202410674132.6A Division CN118309023A (en) | 2022-12-30 | 2022-12-30 | Forward expansion adjusting device for straight wall arc-shaped groove of short-distance fishway system |
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| CN115977041A true CN115977041A (en) | 2023-04-18 |
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| CN202410674132.6A Pending CN118309023A (en) | 2022-12-30 | 2022-12-30 | Forward expansion adjusting device for straight wall arc-shaped groove of short-distance fishway system |
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Cited By (1)
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| CN116695651A (en) * | 2023-08-07 | 2023-09-05 | 四川水发勘测设计研究有限公司 | Fishway structure and application method thereof |
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| Publication number | Publication date |
|---|---|
| CN115977041B (en) | 2024-06-18 |
| CN118309023A (en) | 2024-07-09 |
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