Ecological prefabricated channel

Abstract

The invention relates to the field of agricultural water conservancy facilities, and discloses an ecological prefabricated channel. The ecological prefabricated channel comprises a first channel body section, a second channel body section, a containing section, an escape slope section and a side wall section, and a climbing area is arranged on the second channel body section. A refuge groove is formed by the second channel body section, the containing section, the escape slope section and the side wall section, a water storage space is formed by the refuge groove in the water recession period, and organisms are temporarily stored through the refuge groove; the second canal body section is large in gradient, so that water flow can be guided to be quickly collected to the refuge tank, water environment conditions are provided for temporarily stored organisms, and meanwhile, the irrigation efficiency is guaranteed; the friction increasing part of the climbing area provides a climbing fulcrum, the escape slope section is designed to be small in gradient, animal escape is facilitated, animal physical exhaustion and the biological death rate are reduced, and therefore the purpose of ecological refuge is achieved. The problem that animals are trapped due to smooth and hard canal walls is solved, and the requirements for temporary refuge and escape of small animals in farmlands are met.

Description

Technical Field

[0001] The present invention relates to the field of agricultural water conservancy facilities, and in particular to an ecological prefabricated channel. Background Art

[0002] Because most agricultural areas are water-scarce, traditional agricultural irrigation prioritizes improving canal irrigation efficiency and maximizing water conservation. To achieve this goal, canals often utilize smooth, hard concrete linings. However, this design approach neglects the ecological function of farmland irrigation areas. Specifically, the smooth surface and steep slopes of hard canals prevent small animals such as frogs and crabs from escaping by climbing along the canal walls. Furthermore, the hard, non-porous surface of the canal can trap and kill large numbers of fish that stray into the canal with irrigation water during drainage. These two factors, combined, have led to a decline in the quality of farmland habitats, negatively impacting biodiversity and the stability of the ecosystem within the irrigation area. Summary of the Invention

[0003] In view of this, the present invention provides an ecological prefabricated channel, which aims to provide a channel design that meets the needs of temporary refuge of fish and escape of small animals, while ensuring irrigation efficiency and meeting the needs of temporary refuge and escape of small animals in farmland.

[0004] The present invention provides an ecological prefabricated channel, comprising a first channel body section, a second channel body section, a holding section, an escape slope section, and a side wall section. The second channel body section is connected to one side of the first channel body section. A climbing area is provided on the second channel body section. The top elevation of the climbing area is lower than the top elevations of the first channel body section and the escape slope section, and higher than the top elevation of the holding section. The holding section is connected between the climbing area and the escape slope section. The climbing area, the holding section, the escape slope section, and the side wall section together enclose a refuge trough.

[0005] A friction-increasing portion is provided on the climbing area, and the slope of the second channel section is greater than the slope of the escape slope section.

[0006] Beneficial effects: A refuge trough is formed by the second channel body section, the holding section, the escape slope section and the side wall section. The top elevation of the climbing area is lower than the escape slope section but higher than the holding section. The refuge trough forms a water storage space during the water recede period. Trapped animals, such as frogs, crabs, fish, etc., enter the refuge trough with the water flow and are temporarily stored in the refuge trough; the large slope of the second channel body section is conducive to guiding the water flow to quickly converge into the refuge trough, providing water environment conditions for the temporarily stored organisms, and is also conducive to ensuring irrigation efficiency; a climbing fulcrum is provided by the friction-increasing part of the climbing area, and the small slope design of the escape slope section facilitates the escape of animals, reduces the physical consumption of animals and the mortality rate of organisms, thereby achieving the purpose of ecological refuge; the present invention solves the problem of animals being trapped due to smooth and hard channel walls, and meets the temporary refuge and escape needs of small animals in farmland.

[0007] The ecological prefabricated channel provided by the present invention forms a small water storage space in the refuge trough during the water recession period, which is suitable for temporary refuge of fish and other animals in the channel during the water recession period, thereby improving the survival rate of fish in the farmland ecosystem and being beneficial to the protection of fish in the farmland water body and the maintenance of biodiversity.

[0008] The ecological prefabricated channel provided by the present invention has a climbing area of ​​the second channel section and an escape slope section that form a climbable channel. While minimizing the occupation of agricultural land, it provides a crawling escape channel for amphibians and reptiles such as frogs and crabs, which is beneficial to the biodiversity and stability of the ecosystem in farmland irrigation areas.

[0009] In some embodiments, the friction-increasing portion is configured as a plurality of protrusions or depressions, and all of the friction-increasing portions form a friction-increasing area, which is disposed along the slope of the second channel section.

[0010] Beneficial effects: The raised or recessed design increases the surface roughness of the climbing area, providing gripping points for small animals. It is especially suitable for slippery environments, improving the success rate of escape and avoiding climbing failures due to smooth channel walls.

[0011] In some embodiments, the ecological prefabricated channel further includes a shielding section, one side of which is fixedly connected to the top of the climbing area, and the other side of which extends toward the escape slope section to shield the refuge trough.

[0012] Beneficial effects: The shielding section extends from the top of the climbing area to the top of the refuge trough, playing a role in ecological protection. On the one hand, it can provide shade and reduce temperature, reduce water evaporation, prevent the water temperature in the refuge trough from being too high and causing suffocation of organisms, and is also beneficial to saving irrigation resources; on the other hand, it can prevent birds from predating and improve the survival rate of trapped organisms.

[0013] In some embodiments, the side wall section is provided with two sections, which are respectively provided at the end sides along the channel extension direction. One side of the side wall section is fixedly provided with the second channel body section, and the other side is fixedly provided with the escape slope section.

[0014] Beneficial effects: Two sections of side walls are set at both ends of the refuge trough, connecting the second channel section and the escape slope section to form a closed refuge trough; the closed side walls block the escape of organisms from both sides, ensuring that they can crawl out along the escape slope section, maintaining functional reliability.

[0015] In some embodiments, the slope ratio of the escape ramp section is 1:2 to 1:3.

[0016] Beneficial effect: This design can ensure that animals can climb easily while controlling the area occupied by the channel to avoid the slope being too steep, which will cause the animals to lack physical strength, and to avoid the slope being too gentle, which will occupy farmland space.

[0017] In some embodiments, the first channel segment and the second channel segment are combined to form a U-shaped structure.

[0018] Beneficial effects: The U-shaped structure conforms to fluid mechanics, which helps reduce water flow resistance and avoid the problem of dead corners in the channel. When the water level is higher than the climbing area, the channel water can automatically and smoothly flow into the refuge trough, naturally gathering organisms.

[0019] In some embodiments, the top elevation of the first channel body section, the top elevation of the second channel body section, and the top elevation of the escape slope section are arranged flush with each other.

[0020] Beneficial effect: The top elevation of the prefabricated channel is designed to be flush, which facilitates alignment when assembling multiple modules and improves assembly efficiency.

[0021] In some embodiments, the first channel body section, the second channel body section, and the escape slope section have the same thickness in a direction perpendicular to the extension direction of their respective slope surfaces.

[0022] Beneficial effects: The design of uniform thickness can simplify the prefabrication mold and reduce production costs; at the same time, it can also ensure uniform structural strength and prevent local fracture.

[0023] In some embodiments, the top outer edges of the first channel body section, the second channel body section, and the escape slope section are all provided with overlapping edges, and the overlapping edges are extended in a direction away from the channel inner cavity.

[0024] Beneficial effects: Through the design of the extended overlapping edge, the top of the prefabricated channel is effectively aligned with the surrounding farmland, optimizing the stress conditions and reducing the risk of channel settlement.

[0025] In some embodiments, a stepped structure is provided on the holding section, the stepped structure is elevated in the direction from the second channel section to the escape slope section, and the stepped structure has at least one step.

[0026] Beneficial effects: The steps of the ladder structure on the holding section can provide graded buffering for escape, reduce the single climbing height, and adapt to weaker creatures such as young frogs and small crabs, allowing them to escape from low to high to the gently sloping escape slope section, thereby improving the escape success rate of the creatures; in addition, the steps on the bottom side can form a shallow water area for fish to temporarily live, ensuring the water environment conditions for refuge.

[0027] In some embodiments, a plurality of the ecological prefabricated channels are provided along the irrigation channel, and the interval between two adjacent ecological prefabricated channels is 100m-200m.

[0028] Beneficial effects: The distance between two adjacent ecological prefabricated channels is set at 100m-200m, ensuring that animals can reach the refuge before they are exhausted, covering the biological rescue needs in the entire channel, balancing manufacturing and construction costs with ecological benefits, avoiding a surge in construction costs due to too small a spacing, and avoiding too large a spacing, which makes it too difficult for animals to take refuge and escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A top view of an ecological prefabricated channel according to an embodiment of the present invention;

[0031] Figure 2 for Figure 1 Schematic diagram of the AA section;

[0032] Description of reference numerals:

[0033] 1. First channel section; 2. Second channel section; 21. Friction-increasing area; 3. Holding section; 4. Escape slope section; 5. Side wall section; 6. Shielding section; 7. Step structure; 8. Overlapping edge. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0035] The following combination Figure 1 and Figure 2 , describing embodiments of the present invention.

[0036] According to an embodiment of the present invention, an ecological prefabricated channel is provided, comprising a first channel section 1, a second channel section 2, a holding section 3, an escape slope section 4, and a sidewall section 5. The second channel section 2 is connected to one side of the first channel section 1, and the holding section 3, the escape slope section 4, and the sidewall section 5 are arranged on one side of the prefabricated channel located on the second channel section 2. The first channel section 1 serves as a diversion channel portion, and the second channel section 2 serves as a functional channel portion.

[0037] In this embodiment, a climbing area is provided on the second channel body section 2. The top elevation of the climbing area is lower than the top elevations of the first channel body section 1 and the escape slope section 4, and higher than the top elevation of the holding section 3. The holding section 3 is connected between the climbing area and the escape slope section 4; the climbing area, the holding section 3, the escape slope section 4 and the side wall section 5 together form a refuge trough; a friction-increasing portion is provided on the climbing area, and the slope of the second channel body section 2 is greater than the slope of the escape slope section 4.

[0038] The ecological prefabricated channel provided in this embodiment comprises a second channel body section 2, a holding section 3, an escape slope section 4 and a side wall section 5 to form a refuge trough. The top elevation of the climbing area is lower than the escape slope section 4 but higher than the holding section 3. The refuge trough forms a water storage space during the water receding period. Trapped animals, such as frogs, crabs, and fish, enter the refuge trough with the water flow and are temporarily stored in the refuge trough.

[0039] The two large slopes of the second channel section are conducive to guiding the water flow to quickly converge into the refuge trough, providing water environment conditions for temporarily stored organisms, and at the same time helping to ensure irrigation efficiency; the friction-increasing part of the climbing area provides a climbing fulcrum, and the four small slopes of the escape slope section are designed to facilitate animal escape, reduce animal physical consumption and biological mortality, thereby achieving the purpose of ecological refuge.

[0040] The ecological prefabricated channel provided in this embodiment forms a small water storage space in the refuge trough during the water recession period, which is suitable for temporary refuge of fish and other animals in the channel during the water recession period, thereby improving the survival rate of fish in the farmland ecosystem and being beneficial to the protection of fish in farmland water bodies and the maintenance of biodiversity.

[0041] The ecological prefabricated channel provided in this embodiment has a climbing area of ​​the second channel section 2 and an escape slope section 4 that form a climbable channel. While minimizing the occupation of agricultural land, it provides a crawling escape channel for amphibians and reptiles such as frogs and crabs, which is beneficial to the biodiversity and stability of the ecosystem in the farmland irrigation area.

[0042] In some embodiments, the friction-increasing portion is configured as a plurality of protrusions or depressions, all of which form a friction-increasing region 21. The friction-increasing region 21 is arranged along the slope of the second channel section 2. The protrusions or depressions increase the surface roughness of the climbing area, providing gripping points for small animals. This is particularly suitable for slippery environments, improving escape success and preventing climbing failures due to slippery channel walls.

[0043] In a specific embodiment, the concave-convex height of the surface of the friction-increasing portion is set to 3-8 mm.

[0044] In a specific embodiment, the friction-increasing portion is configured as a roughened surface structure, which may be formed by template embossing or surface roughening.

[0045] In some embodiments, the ecological prefabricated channel also includes a shielding section 6, one side of which is fixedly connected to the top of the climbing area, and the other side of the shielding section 6 extends toward the escape slope section 4 to shield the refuge trough.

[0046] Beneficial effects: The shielding section 6 extends from the top of the climbing area to the top of the refuge trough, playing a role in ecological protection. On the one hand, it can provide shade and reduce temperature, reduce water evaporation, prevent the water temperature in the refuge trough from being too high and causing suffocation of organisms, and is also beneficial to saving irrigation resources; on the other hand, it can prevent birds from predating and improve the survival rate of trapped organisms.

[0047] In some embodiments, the side wall section 5 is provided with two sections, which are respectively provided at the end sides along the channel extension direction. One side of the side wall section 5 is fixedly provided with the second channel body section 2 , and the other side is fixedly provided with the escape slope section 4 .

[0048] Beneficial effect: Two sections of side walls are arranged at both ends of the refuge trough, connecting the second channel section 2 and the escape slope section 4 to form a closed refuge trough; the closed side walls block the organisms from escaping from both sides, ensuring that they can crawl out along the escape slope section 4, maintaining functional reliability.

[0049] In some embodiments, a stepped structure 7 is provided on the containing section 3 . The stepped structure 7 is elevated in the direction from the second channel section 2 to the escape slope section 4 . The stepped structure 7 has one or more steps.

[0050] Through this solution, the steps of the stepped structure 7 on the holding section 3 can be used for graded buffering of escape, reducing the single climbing height, and adapting to physically weak creatures such as young frogs and small crabs, allowing them to escape from low to high toward the gently sloping escape slope section 4, thereby improving the escape success rate of the creatures; and the steps on the bottom side can form a shallow water area for fish to temporarily live, ensuring the water environment conditions for refuge.

[0051] As a preferred embodiment, the stepped structure 7 has 3-5 steps, and the height of each step is set to 5-8 cm.

[0052] In a specific embodiment, the minimum water storage depth of the refuge tank is ≥20 cm to ensure the survival of fish.

[0053] The prefabricated channel provided in this embodiment utilizes a combined design of a holding section 3 and a stepped buffer to prevent fish from being trapped and dying in the channel when the water recedes, and utilizes shallow water areas to provide temporary habitats, thereby increasing the survival rate of fish.

[0054] In some embodiments, multiple prefabricated eco-friendly channels are installed along the irrigation channel, with the spacing between adjacent prefabricated eco-friendly channels ranging from 100m to 200m. This spacing ensures that animals can reach their refuge points before exhaustion, covers the entire channel's animal rescue needs, and balances manufacturing and construction costs with ecological benefits. It avoids excessive spacing that could lead to a surge in construction costs, and avoids excessive spacing that could make escape difficult.

[0055] In some embodiments, the first channel section 1 and the second channel section 2 are combined to form a U-shaped structure. This U-shaped structure conforms to fluid mechanics, helping to reduce water flow resistance and avoid dead corners in the channel. When the water level is higher than the slope, the channel water can automatically and smoothly flow into the refuge trough, naturally gathering organisms.

[0056] In a specific embodiment, the slope of the second channel section 2 is set to 1:1.2 to 1:1.5.

[0057] In some embodiments, the slope ratio of the escape ramp section 4 is 1:2 to 1:3. This design ensures that animals can climb easily while controlling the area occupied by the channel, thereby avoiding a slope ratio that is too steep and causes insufficient physical strength for the animals, and avoiding a slope ratio that is too gentle and takes up farmland space.

[0058] The prefabricated channel provided in this embodiment uses a refuge groove and a friction-increasing slope to avoid the problem of animals being unable to climb out due to a single smooth channel wall, thereby effectively improving the success rate of biological escape.

[0059] In some embodiments, the top elevations of the first channel body section 1, the second channel body section 2, and the escape ramp section 4 are aligned. This leveling of the top elevations of the prefabricated channel facilitates alignment during assembly of multiple modules, improving assembly efficiency.

[0060] In some embodiments, the first channel section 1, the second channel section 2, and the escape slope section 4 have the same thickness perpendicular to the direction of extension of their respective slopes. This uniform thickness design simplifies prefabrication molds and reduces production costs. It also ensures uniform structural strength and prevents local fractures.

[0061] In some embodiments, the top outer edges of the first channel section 1, the second channel section 2, and the escape slope section 4 are each provided with an overlapping edge 8, extending away from the channel interior. This extended overlapping edge design allows the top of the prefabricated channel to effectively overlap with the surrounding farmland, optimizing stress conditions and reducing the risk of channel subsidence.

[0062] In a specific embodiment, the top elevation of the climbing area on the channel side is not higher than 1 / 2 of the channel design water depth; further, the top elevation of the climbing area on the channel side is set to 1 / 3-1 / 2 of the channel design water depth; preferably 0.4. This height design can maximize the guidance of residual water in the channel into the refuge trough during the receding water period, while avoiding excessive water inflow during the irrigation period that affects the flow rate of the main channel.

[0063] The specific water storage width and depth of the refuge tank can be adjusted according to the body size of common local fish and are not specifically restricted here.

[0064] In a specific embodiment, the ecological prefabricated channel is constructed by on-site casting or prefabrication assembly.

[0065] In a specific embodiment, an anti-seepage lining structure is provided at the junction of the first channel body section 1, the second channel body section 2 and ecological areas such as farmland to obtain an anti-seepage effect and prevent channel water from seeping out.

[0066] In a specific embodiment, the channel is prefabricated with C30 fiber concrete, polypropylene fibers may be added to enhance crack resistance, and the surface friction-enhancing area may be shot blasted after demoulding.

[0067] The present invention solves the problem of animals being trapped due to smooth and hard canal walls, and meets the temporary shelter and escape needs of small animals in farmland; the present invention adopts a modular structure to facilitate factory prefabrication and on-site assembly, reducing construction costs.

[0068] The ecological prefabricated channel provided by this invention can be constructed on-site using formwork or prefabricated and then assembled on-site. It offers excellent structural integrity, low cost, controlled quality, and convenient construction. It is also adaptable to U-shaped irrigation channels of various sizes, thus offering a wide range of applications. In terms of specific design and implementation, it can be constructed without reducing the cross-sectional dimensions or changing the original channel material, without compromising irrigation and water delivery efficiency, and while minimizing farmland occupation, it balances the economic, ecological, and social benefits of agricultural water conservancy projects.

[0069] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An ecological prefabricated channel, characterized in that: The invention comprises a first channel body section (1), a second channel body section (2), a containing section (3), an escape slope section (4) and a side wall section (5); the second channel body section (2) is connected to one side of the first channel body section (1); a climbing area is provided on the second channel body section (2); the top elevation of the climbing area is lower than the top elevations of the first channel body section (1) and the escape slope section (4), and higher than the top elevation of the containing section (3); the containing section (3) is connected between the climbing area and the escape slope section (4); the climbing area, the containing section (3), the escape slope section (4) and the side wall section (5) together enclose a refuge trough; A friction-increasing portion is provided on the climbing area, and the slope of the second channel section (2) is greater than the slope of the escape slope section (4).

2. The ecological prefabricated channel according to claim 1, characterized in that: The friction-increasing parts are configured as a plurality of protrusions or depressions, and all of the friction-increasing parts form a friction-increasing area (21), and the friction-increasing area (21) is configured along the slope of the second channel section (2).

3. The ecological prefabricated channel according to claim 1, characterized in that: The ecological prefabricated channel further comprises a shielding section (6), one side of which is fixedly connected to the top of the climbing area, and the other side of which is extended toward the escape slope section (4) to shield the refuge trough.

4. The ecological prefabricated channel according to claim 1, characterized in that: The side wall section (5) is provided with two sections, which are respectively provided at the end sides along the channel extension direction; one side of the side wall section (5) is fixedly provided with the second channel body section (2), and the other side is fixedly provided with the escape slope section (4).

5. The ecological prefabricated channel according to claim 1, characterized in that: The slope ratio of the escape slope section (4) is 1:2 to 1:

3.

6. The ecological prefabricated channel according to claim 1, characterized in that: The first channel body section (1) and the second channel body section (2) are combined to form a U-shaped structure.

7. The ecological prefabricated channel according to claim 6, characterized in that: The top elevation of the first channel body section (1), the top elevation of the second channel body section (2) and the top elevation of the escape slope section (4) are arranged flush with each other; and / or The first channel body section (1), the second channel body section (2) and the escape slope section (4) have the same thickness in a direction perpendicular to the extension of their respective slope surfaces.

8. The ecological prefabricated channel according to claim 1, characterized in that: The top outer edges of the first channel body section (1), the second channel body section (2) and the escape slope section (4) are all provided with overlapping edges (8), and the overlapping edges (8) are extended in a direction away from the channel inner cavity.

9. The ecological prefabricated channel according to any one of claims 1 to 8, characterized in that: The containing section (3) is provided with a stepped structure (7), the stepped structure (7) being elevated in the direction from the climbing area to the escape slope section (4), and the stepped structure (7) having at least one step.

10. The ecological prefabricated channel according to any one of claims 1 to 8, characterized in that: A plurality of the ecological prefabricated channels are arranged along the irrigation channel, and the interval between two adjacent ecological prefabricated channels is 100m-200m.

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