Ecological protection integrated structure for original main river channel of artificial canal

Abstract

The invention discloses an original main river channel ecological protection integrated structure of an artificial canal, and relates to the technical field of hydraulic engineering, the original main river channel ecological protection integrated structure comprises a diversion dam, the diversion dam comprises a U-shaped dam, radial flow plates extend from the two sides of the U-shaped dam, and diversion plates are arranged on the radial flow plates; wherein the end, close to the U-shaped dam, of the flow guide plate is hinged to the radial flow plate, and a telescopic piece is arranged between the other end of the flow guide plate and the radial flow plate; and the driving assembly is connected with the telescopic piece. According to the river channel, part of water flow in the canal river channel or the branch river channel is introduced into the original main river channel, so that the water body flowing state in the original main river channel is kept throughout the year, an ecological conservation area is formed in the dry season, an inhabiting environment is provided for benthos and fishes, and a water source is provided for aquatic organisms on the bank and bank slope vegetation; the biological diversity of the upstream reach is kept, and in the flood season, the river channel can be used as a canal river channel to play a flood storage role.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, specifically to an integrated structure for the ecological protection of the original main channel of an artificial canal. Background Technology

[0002] The construction of canals usually involves modifying natural waterways. Natural rivers often have many meandering sections. In order to shorten the navigation distance of the canal and reduce the curvature of the waterway, the more curved sections of the original waterway are usually straightened.

[0003] Canals formed by cutting off the flow of water from the original bends of a main river channel typically have a lower riverbed downstream than upstream. Water from tributaries flows downstream, leaving the upstream section of the original main channel perpetually dry. Even during the tributary flood season, when some water flows into the upstream section, the volume is small, and the upstream section remains dry during the tributary dry season. This upstream dryness severely impacts aquatic life and vegetation along the riverbanks, leading to a sharp decline in biodiversity. Therefore, for canal straightening projects, minimizing the impact on the ecological environment of the original bends and ensuring the upstream water remains flowing year-round, thus preserving biodiversity, is a technical problem that those skilled in the art are eager to solve.

[0004] The existing patent, titled "An Ecological Protection Structure for the Original Main Channel of an Artificial Canal" (application number: CN202310414868.5), describes a method that involves setting up a sand-guiding embankment downstream of the original main channel to guide sediment and some water from tributaries to the upstream section. A groyne is located at the upstream confluence, with several water-passing channels at the top of the groyne. The bottom of the water-passing channels is higher than the canal water level during the dry season but lower than the canal flood level during the flood season. By guiding the water from the downstream of the original main channel to the upstream, the ecological protection of the upstream of the original main channel is achieved.

[0005] However, in reality, there may be no tributaries at the original main channel, and it is impossible to use tributaries to protect the ecology of the original main channel. At the same time, although the canal can be drained through the original main channel during the flood season, the application proposes to set up a U-shaped dam upstream of the original main channel. The U-shaped dam largely obstructs the water flow, especially during the flood season when the water flow velocity is fast. The U-shaped dam will guide the water flow to the side bank of the original main channel, resulting in erosion of the original main channel bank. Summary of the Invention

[0006] The technical solution of this invention addresses the problems of existing ecological protection schemes for the main river channel, which have poor adaptability, high requirements, and are not easy to implement. Furthermore, they cannot be flexibly adjusted during the dry season and flood season, and may even lead to worse results during the flood season.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an integrated structure for the ecological protection of the original main channel of an artificial canal, comprising: A diversion dam, comprising a U-shaped dam, with radial plates extending on both sides of the U-shaped dam, and a diversion plate provided on the outer surface of the radial plates; Wherein, one end of the guide plate near the U-shaped dam is hinged to the radial plate, and the other end is provided with a telescopic component between it and the radial plate; A drive assembly is connected to the telescopic member and is used to control the telescopic member to extend and retract, thereby changing the angle between the guide plate and the radial plate.

[0008] Preferably, the diversion dam is located within the original main channel, and the opening of the diversion dam faces the flow direction of the water in the original main channel, so that the water in the original main channel is radiated to both sides of the diversion dam by the diversion plate.

[0009] Preferably, the telescopic component includes a first telescopic airbag, under the elastic force of the first telescopic airbag itself, the guide plate moves away from the radial plate; The driving component is an air source driving mechanism used to inflate or de-inflate the first telescopic airbag to drive the guide plate to swing about the radial plate, thereby changing the angle between the guide plate and the radial plate.

[0010] Preferably, the drive assembly includes a fixed block, and a first chamber and a second chamber are arranged sequentially from top to bottom inside the fixed block, with a buoyancy block arranged in the first chamber; A traction plate is provided in the second chamber, and a second telescopic airbag is provided between the lower end face of the traction plate and the bottom wall of the second chamber. The second telescopic airbag is connected to the first telescopic airbag through a conduit, and a traction rope is connected between the buoyancy block and the traction plate. The fixed pier has a water flow hole that connects the first chamber to the outside, so that the water level inside the first chamber is always level with the water level outside.

[0011] Preferably, the fixed pier is disposed within the U-shaped groove of the U-shaped dam.

[0012] Preferably, the radial flow plate includes a fixing pile and a separation plate; The fixed pile is fixedly installed on the riverbed of the original main channel and connected to the U-shape, and the separation plate is detachably installed on the fixed pile through a snap-fit ​​assembly.

[0013] Preferably, the buckle assembly includes a slot formed in the side wall of the fixed pile, an insert plate is connected to the separation plate, the insert plate is slidably inserted into the slot, and a limit groove is formed in the insert plate; An installation groove is provided in the fixed pile, a movable block is provided in the installation groove, an insertion rod is connected to the movable block, a connecting hole is provided between the slot and the installation groove, and a spring is provided between the movable block and the wall of the installation groove. Under the elastic force of the spring, the insertion rod passes through the connecting hole, enters the slot, and slides into contact with the limiting groove.

[0014] Preferably, a third telescopic airbag is provided between the movable block and the wall of the mounting groove, and a fourth telescopic airbag is provided on the top wall of the second chamber. The third telescopic airbag and the fourth telescopic airbag are connected by a conduit.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by introducing a portion of the water flow from a canal or tributary into the original main channel, the water in the original main channel is kept in a constant state of flow throughout the year. During the dry season, an ecological conservation area is formed, providing a habitat for benthic organisms and fish, and providing water for aquatic organisms and slope vegetation on the banks, thus maintaining the biodiversity of the upstream river section. During the flood season, it can also serve as a canal channel to store floodwater.

[0016] 2. In this invention, by setting up an angle-adjustable diversion dam within the original main channel, during the dry season, the diversion dam's radial flow effect allows only low-flow water from tributaries or canals to enter the original main channel. This also increases the flow area of ​​the water within the original main channel, maintaining its ecological state and preventing excessive diversion of water within the canal, thus ensuring the canal's navigation needs. During the flood season, the angle of the diversion dam can be reduced to decrease its obstruction of the water within the channel, improving the flow efficiency. Furthermore, the change in the diversion dam's shape is driven by the buoyancy of the water itself, and this change is based on synchronized regulation during both the dry and flood seasons, requiring no manual intervention and being automatically triggered, thus saving manpower and energy.

[0017] 3. In this invention, the radial plates of the diversion dam are installed separately. During the flood season, the radial plates can be automatically separated by the buoyancy of the water, thereby further reducing the obstruction of the diversion dam to the water body and greatly improving the flow efficiency of the water body in the river channel. At the same time, it can also prevent the radial plates from guiding the high-speed water flow to the riverbank during the flood season, thus preventing the riverbank from being eroded by the water flow. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the diversion dam structure in this invention; Figure 2 This is a schematic diagram of the driving component in this invention; Figure 3 for Figure 2Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0019] In the diagram: 1. Original main channel; 2. Canal channel; 3. Tributary channel. 4. Diversion dam, 401. U-shaped dam, 402. Radial plate, 403. Expansion joint, 404. Diversion plate; 4021 Fixed pile, 4022 Separation plate, 5 Drive assembly, 501 Fixed pier, 502 First chamber, 503 Second chamber, 504 Buoyancy block, 505 Traction plate, 506 Second telescopic airbag, 507 Water flow hole; 6. Buckle assembly, 601 mounting slot, 602 insert plate, 603 spring, 604 movable block, 605 insert rod, 606 third telescopic airbag, 607 fourth telescopic airbag, 608 card slot. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0022] Example 1: Please refer to Figure 1-4 This invention provides a technical solution: an integrated structure for the ecological protection of the original main channel of an artificial canal, comprising: The diversion dam 4 includes a U-shaped dam 401, with radial plates 402 extending on both sides of the U-shaped dam 401, and a diversion plate 404 installed on the outer surface of the radial plates 402.

[0023] Among them, one end of the guide plate 404 near the U-shaped dam 401 is hinged to the radial plate 402, and the other end is provided with a telescopic component 403 between it and the radial plate 402.

[0024] Drive component 5 is connected to telescopic component 403. Drive component 5 is used to control the telescopic component 403 to extend and retract, so as to change the angle between the guide plate 404 and the radial plate 402.

[0025] A dam is constructed downstream of the original main channel 1 to raise the water level, thereby diverting part of the water flow from the tributary 3 downstream of the original main channel 1 to the upstream of the original main channel 1. The diversion dam 4 is U-shaped and is located within the original main channel 1, with its opening facing the flow direction of the water within the original main channel 1. This allows the water flow within the original main channel 1 to flow towards the outside of the U-shaped dam 401. The water flow is guided to both sides of the diversion dam 401 by the U-shaped dam 401 and the diversion plate 404, thus expanding the water flow area within the original main channel 1. During the dry season, a larger water area can be obtained upstream due to the low flow rate, thereby forming a larger ecological conservation area, providing habitat for benthic organisms and fish, providing water source for aquatic organisms and slope vegetation, and maintaining biodiversity in the upstream section of the river.

[0026] During the flood season, the guide plate 404 is driven to approach the radial plate 402 by the drive component 5 to reduce the angle between the radial plate 402 and the guide plate 404, thereby reducing the interception effect of the guide dam 4 on the water flow, so that the water flow can pass quickly in the upstream section of the original main channel 1 and alleviate the impact of the water flow in the upstream section.

[0027] In this embodiment, the telescopic component 403 includes a first telescopic airbag. Under the elastic force of the first telescopic airbag itself, the guide plate 404 moves away from the radial plate 402.

[0028] The drive assembly 5 is an air source drive mechanism used to inflate or de-inflate the first telescopic airbag to drive the guide plate 404 to swing about the radial plate 402, thereby changing the angle between the guide plate 404 and the radial plate 402.

[0029] The air source drive mechanism can be an air pump installed on the shore, which is connected to the first telescopic airbag through a conduit.

[0030] In practical engineering, considering the problem of river siltation, especially during the dry season when the water flow is slower and silt accumulates more easily, we choose to design grooves at the bottom of the U-shaped dam 401 and on the water-facing side (the side facing the direction of water flow) of the radial plate 402 to facilitate silt deposition, or install removable dredging covers / valves. Meanwhile, the guide plate 404 and the separation plate 4022 must be made of materials with sufficient strength and toughness to withstand the impact of high-speed water flow during the flood season and avoid deformation or breakage. Materials used include hardwood treated for corrosion and insect resistance, such as pressure-impregnated hardwood, or more durable engineering plastics and composite materials. All metal connectors, such as the hinges of the guide plate 404, are made of corrosion-resistant materials, such as stainless steel, or undergo effective anti-corrosion treatment, such as hot-dip galvanizing. The first telescopic air bladder of the telescopic component 403 must be made of water-resistant, aging-resistant, and fatigue-resistant elastic materials, such as specific synthetic rubber, and ensure long-term sealing.

[0031] In this embodiment, the drive assembly 5 includes a fixed block 501, and a first chamber 502 and a second chamber 503 are arranged sequentially from top to bottom inside the fixed block 501. A buoyancy block 504 is arranged in the first chamber 502.

[0032] A traction plate 505 is provided in the second chamber 503. A second telescopic airbag 506 is provided between the lower end face of the traction plate 505 and the bottom wall of the second chamber 503. The second telescopic airbag 506 is connected to the first telescopic airbag through a conduit. A traction rope is connected between the buoyancy block 504 and the traction plate 505. A through hole is provided in the fixed block 501 for the traction rope to pass through.

[0033] The fixed pier 501 has a water flow hole 507 that connects the first chamber 502 to the outside, so that the water surface inside the first chamber 502 is always level with the outside water surface. The buoyancy block 504 is supported by a low-density material and can always float on the water surface. When the water level in the fixed pier 501 changes, under the action of buoyancy and the elasticity of the second telescopic airbag 506, the buoyancy block 504 floats up and down in the first chamber 502, and the traction plate 505 is pulled up and down synchronously in the second chamber 503 by the traction rope, so that the second telescopic airbag 506 is intermittently compressed and restored. The gas in the second telescopic airbag 506 and the first telescopic airbag circulates, thereby changing the compression or expansion of the first telescopic airbag.

[0034] In this embodiment, the fixed pier 501 is set in the U-shaped groove of the U-shaped dam 401. The reason for this setting is that the groove of the U-shaped dam 401 is a still water zone, which can avoid excessive water fluctuation and make the water surface in the first chamber 502 relatively stable. At the same time, the U-shaped dam 401 blocks impurities in the water, preventing impurities from clogging the water flow hole 507.

[0035] In different situations, such as in rivers with high sediment content, the flow hole 507 needs to be designed with an anti-clogging structure, such as adding a removable filter screen or designing it to be self-cleaning by water flow. Regular inspections are required during actual use. The buoyancy block 504 is made of a low-absorption, non-deformable, and durable buoyancy material to ensure long-term buoyancy stability. The traction rope needs to be made of corrosion-resistant and fatigue-resistant materials, such as stainless steel wire rope or high-performance synthetic fiber rope. The second telescopic airbag 506, and the subsequent third 606 and fourth 607 telescopic airbags, also need to be made of water-resistant, aging-resistant, and fatigue-resistant elastic materials, and are designed with valve interfaces for detecting air pressure and replenishing gas (not shown in the diagram) for easy maintenance. The fixed pier 501 is set inside the groove of the U-shaped dam 401, and its top should be designed as an openable inspection cover for inspection and maintenance of the internal chambers, buoyancy block 504, airbag 506, traction rope, and other components.

[0036] During the flood season, the water flow is very fast, and the diversion dam 4 is essentially diverting the water flow in the middle of the river to the two banks. Under high flow velocity, the concave side of the river is subjected to high-speed impact, which can easily cause erosion of the concave side of the river and lead to soil erosion. To address this issue, we propose the following solution.

[0037] In this embodiment, the radial plate 402 includes a fixing pile 4021 and a separation plate 4022.

[0038] Among them, the fixed pile 4021 is fixedly set on the riverbed of the original main river channel 1 and connected to the U-shaped dam 401, and the separation plate 4022 is detachably installed on the fixed pile 4021 through the snap fastener assembly 6.

[0039] The buckle assembly 6 includes a slot 608 opened on the side wall of the fixed pile 4021, an insert plate 602 connected to the separation plate 4022, the insert plate 602 is slidably inserted into the slot 608, and a limit groove is opened on the insert plate 602.

[0040] An installation groove 601 is provided in the fixed pile 4021. A movable block 604 is provided in the installation groove 601. An insertion rod 605 is connected to the movable block 604. A connecting hole is provided between the slot 608 and the installation groove 601. A spring 603 is provided between the movable block 604 and the groove wall of the installation groove 601. Under the elastic force of the spring 603, the insertion rod 605 passes through the connecting hole, enters the slot 608, and slides into contact with the limiting groove, thereby connecting the separation plate 4022 and the fixed pile 4021.

[0041] A third telescopic airbag 606 is provided between the movable block 604 and the groove wall of the mounting groove 601, and a fourth telescopic airbag 607 is provided on the top wall of the second chamber 502. The third telescopic airbag 606 and the fourth telescopic airbag 607 are connected by a conduit.

[0042] A sealing ring is installed in the gap between the connecting hole and the moving parts to prevent the accumulation of mud and sand, which could lead to jamming and failure. The 603 spring must be made of corrosion-resistant materials, such as stainless steel.

[0043] Working principle: When using the integrated ecological protection structure of the original main channel of the artificial canal, the water level in the channel is low during the dry season. The water level in the first chamber 502 is also low. The second telescopic airbag 506 and the first telescopic airbag are basically in a normal relaxed state. Under the elastic support of the first telescopic airbag, the guide plate 404 expands outside the radial plate 402, so that the guide dam 4 maintains a large angle of expansion, which can increase the flow area of ​​the water in the upstream channel, thereby covering a larger area of ​​the upstream channel and increasing the ecological protection area in the upstream channel.

[0044] At the beginning of the flood season, the water flow in the tributary channel 3 is large, and the water level area in the upstream channel 3 rises. The water level in the first chamber 502 rises, and the buoyancy block 504 drives the traction plate 505 to rise synchronously through the traction rope. The traction plate 505 stretches the second telescopic airbag 506, thereby drawing the gas in the first telescopic airbag into the second telescopic airbag 506. The first telescopic airbag contracts, and the guide plate 404 itself is also impacted by the external water flow, so that the guide plate 404 can quickly move closer to the radial plate 402, thereby making the guide dam 4 in a small angle state, thereby improving the water flow efficiency in the upstream channel.

[0045] During the middle and late stages of the flood season, the water levels in both tributary channel 3 and canal channel 2 are high. At this time, the water level in the first chamber 502 rises synchronously, and the buoyancy block 504 continues to rise until the traction plate 505 squeezes the fourth telescopic airbag 607 at the top of the second chamber 503. The gas in the fourth telescopic airbag 607 enters the third telescopic airbag 606 through the conduit. The third telescopic airbag 606 expands and pushes the movable block 604 away from the insert plate 602, thereby causing the insert rod 605 to separate from the limiting groove, thus unlocking the separation plate 4022 from the fixed pile 4021. Under the impact of the high-speed water flow, the separation plate 4022 and the fixed pile 4021... A first telescopic airbag is provided between the separation deflector plate 404 and the radial plate 402. The first telescopic airbag can be connected to the radial plate 402 and the deflector plate 404 by adhesive or Velcro. Under the impact of high-speed water flow, the first telescopic airbag can quickly separate from the separation plate 4022. The separation plate 4022 is supported by non-polluting materials such as wood. Even if it is separated in the water flow, it will not cause additional environmental pollution. This further reduces the obstruction of the deflector dam 4 to the water flow and improves the flow efficiency of the water in the river channel. At the same time, it can prevent the separation plate 4022 from guiding the water flow to the concave side of the riverbank and slow down the erosion of the concave side of the riverbank.

[0046] Example 2: Refer to the appendix of the instruction manual. Figure 5To protect the original main channel without tributary 3, sluice gates are set up in the upstream sections of the canal channel 2 and the original main channel 1 to divert some of the canal water into the upstream and downstream channels. Multiple diversion dams 4 are set up at the upstream inlet of the original main channel 1. Through the radial flow effect of the diversion dams 4, only a low flow of water from the canal channel enters the original main channel 1, but the flow area of ​​the water in the original main channel is increased, so that the water in the upstream section is in a constant state of flow, ensuring the navigation needs of the canal. During the flood season, the sluice gates between the canal channel 2 and the original main channel 1 are opened significantly, and the water in the canal channel 2 can enter the original main channel 1 to play a role in flood storage. In this process, the diversion dams 4 play the same role as in the above embodiment 1.

[0047] To ensure the long-term effective operation of the integrated ecological protection structure of the original main channel of the artificial canal of this invention, a regular maintenance system is established: After the dry season / before the flood season: Check the angle adjustment function of the guide plate 404, the buoyancy blocks, airbags, and traction ropes of each component of the drive assembly 5; clean the groove of the U-shaped dam 401, the water-facing surface of the radial plate 402, the water flow hole 507, and the inside of the buckle assembly 6 to remove any silt that may have accumulated; check the pressure and sealing of all airbags.

[0048] After the flood season: Recover the separator plate 4022 and the guide plate 404 in the designated area downstream, check their integrity and clean, repair or replace them; reinstall the separator plate 4022; conduct a comprehensive inspection of the functions of the drive assembly 5 and the snap-fit ​​assembly 6.

[0049] Regular inspections should be conducted periodically, such as monthly or quarterly, to check the structural appearance and for any abnormal noises, displacement, or damage.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated structure for the ecological protection of the original main channel of an artificial canal, characterized in that, include: The diversion dam (4) includes a U-shaped dam (401), with radial plates (402) extending on both sides of the U-shaped dam (401), and a diversion plate (404) provided on the outer surface of the radial plates (402). The guide plate (404) is hinged to the radial plate (402) at one end near the U-shaped dam (401), and an expansion joint (403) is provided between the other end and the radial plate (402). A drive assembly (5) is connected to the telescopic member (403). The drive assembly (5) is used to control the telescopic member (403) to extend and retract, so as to change the angle between the guide plate (404) and the radial plate (402).

2. The integrated ecological protection structure for the original main channel of an artificial canal according to claim 1, characterized in that: The diversion dam (4) is set in the original main channel (1), and the opening of the diversion dam (4) faces the flow direction of the water in the original main channel (1), so that the water in the original main channel (1) is radiated to both sides of the diversion dam (4) by the diversion plate (404).

3. The integrated ecological protection structure for the original main channel of an artificial canal according to claim 1, characterized in that: The telescopic component (403) includes a first telescopic airbag, under the elastic force of the first telescopic airbag itself, the guide plate (404) moves away from the radial plate (402). The driving component (5) is an air source driving mechanism used to inflate or de-inflate the first telescopic airbag to drive the guide plate (404) to swing about the radial plate (402) to change the angle between the guide plate (404) and the radial plate (402).

4. The integrated ecological protection structure for the original main channel of an artificial canal according to claim 3, characterized in that: The drive assembly (5) includes a fixed block (501), and a first chamber (502) and a second chamber (503) are arranged sequentially from top to bottom inside the fixed block (501). A buoyancy block (504) is arranged in the first chamber (502). A traction plate (505) is provided in the second chamber (503). A second telescopic airbag (506) is provided between the lower end face of the traction plate (505) and the bottom wall of the second chamber (503). The second telescopic airbag (506) is connected to the first telescopic airbag through a conduit. A traction rope is connected between the buoyancy block (504) and the traction plate (505). The fixed pier (501) is provided with a water flow hole (507) that connects the first chamber (502) to the outside, so that the water surface inside the first chamber (502) is always level with the water surface outside.

5. The integrated ecological protection structure for the original main channel of an artificial canal according to claim 4, characterized in that: The fixed pier (501) is set in the U-shaped groove of the U-shaped dam (401).

6. The integrated ecological protection structure for the original main channel of an artificial canal according to claim 4, characterized in that: The radial plate (402) includes a fixed pile (4021) and a separation plate (4022); The fixed pile (4021) is fixedly set on the riverbed of the original main river channel (1) and connected to the U-shaped dam 401. The separation plate (4022) is detachably installed on the fixed pile (4021) by means of the snap-fit ​​assembly (6).

7. The integrated ecological protection structure for the original main channel of an artificial canal according to claim 6, characterized in that: The buckle assembly (6) includes a slot (608) opened on the side wall of the fixed pile (4021), and an insert plate (602) is connected to the separation plate (4022). The insert plate (602) is slidably inserted into the slot (608), and a limit groove is opened on the insert plate (602). An installation groove (601) is provided in the fixed pile (4021), a movable block (604) is provided in the installation groove (601), a plug rod (605) is connected to the movable block (604), a connecting hole is provided between the slot (608) and the installation groove (601), a spring (603) is provided between the movable block (604) and the groove wall of the installation groove (601), under the elastic force of the spring (603), the plug rod (605) passes through the connecting hole and enters the slot (608) and slides in contact with the limiting groove.

8. The integrated ecological protection structure for the original main channel of an artificial canal according to claim 7, characterized in that: A third telescopic airbag (606) is provided between the movable block (604) and the groove wall of the mounting groove (601), and a fourth telescopic airbag (607) is provided on the top wall of the second chamber (502). The third telescopic airbag (606) and the fourth telescopic airbag (607) are connected by a conduit.

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