Farmland road subgrade structure with ecological slope protection and drainage function

Abstract

The utility model discloses a kind of farmland road subgrade structures with ecological revetment and drainage function belong to subgrade technical field, including road subgrade, it is by concrete surface course with road surface flow Rapidly lead to both sides, avoid waterlogging, guarantee traffic safety, after water flow enters revetment subgrade, by concrete slope layer barrier soil body scour, ladder type resistance slope intercepts and slows down flow velocity gradually, its arc side and the shunt guide edge of horizontal arrangement synergistic effect, with concentrated water flow dispersion and along preset path transverse water diversion, effectively prevent gully formation, improve the erosion resistance of side slope, bottom drainage channel uses arc design, drag reduction promotes sinking, with slope layer and revetment subgrade integrally cast, structure is continuous and does not leak, cooperate with drain pipe and gather water flow quickly lead off subgrade, prevent softening and instability, resistance slope and shunt guide edge are equipped with reinforcing steel bar, significantly enhance component impact resistance, shear resistance and anti-deformation ability, realize the long-term unity of subgrade protection and drainage function.

Description

Technical Field

[0001] This utility model relates to the field of roadbed technology, and more specifically, to a roadbed structure for farmland roads with ecological slope protection and drainage functions. Background Technology

[0002] In farmland infrastructure construction, road systems not only play a vital role in transporting agricultural production materials and facilitating the circulation of agricultural products, but the stability of their roadbed structure and their harmony with the surrounding ecological environment also directly affect the health and sustainable development of the farmland ecosystem. Farmland areas are typically relatively flat but have complex drainage conditions, concentrated seasonal rainfall, and soil that is mostly topsoil with a certain degree of looseness and permeability. Under rainfall conditions, roadbed slopes are easily eroded by surface runoff, leading to soil loss and slope collapse, which in turn affects the road's load-bearing capacity and service life. At the same time, rainwater flowing along the slope carries sediment into the surrounding farmland, causing soil nutrient loss or siltation, damaging the topsoil structure, and affecting normal crop growth. Therefore, developing a roadbed structure that integrates structural stability, soil and water conservation capacity, and eco-friendly characteristics can not only help improve the durability and safety of farmland roads, but also promote the transformation of agricultural infrastructure towards green, low-carbon, and circular directions, providing strong support for building an ecological farmland water conservancy system and contributing to rural revitalization and ecological civilization construction.

[0003] Chinese Patent Publication No. CN221218346U discloses a roadbed construction structure. Addressing the problem that existing roadbeds typically have drainage ditches on both sides for rainwater drainage, impurities in the water easily enter the drainage ditches, causing blockages, the present invention proposes the following solution: It includes a roadbed, triangular slopes on both sides of the roadbed, and drainage ditches on one side of each slope. Filter components for rainwater filtration are installed between the slopes and the drainage ditches. Each filter component includes a vertical plate. In this invention, when rainwater flows down the roadbed, it is filtered and then discharged into the drainage ditches through drainage pipes, reducing the amount of soil and impurities entering the drainage ditches, preventing blockages, and reducing the frequency of drainage ditches cleaning. Simultaneously, rainwater seeps down the slopes and, upon passing through the drainage pipes, enters the drainage ditches, keeping the slopes dry and improving their performance.

[0004] In practical applications, existing farmland roads are prone to waterlogging due to the difficulty in timely drainage of surface water. Furthermore, slopes are often made of exposed soil or simply hardened, making them susceptible to soil erosion, slope erosion, and even collapse due to rainwater runoff. Under long-term hydraulic action and environmental cycles, these slopes are also prone to deformation or damage, resulting in poor overall structural durability. Therefore, a farmland roadbed structure with ecological slope protection and drainage functions is proposed. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a farmland roadbed structure with ecological slope protection and drainage functions. It uses a concrete surface layer to quickly guide road surface water to both sides, preventing water accumulation and ensuring traffic safety. After water enters the slope protection roadbed, the concrete slope layer blocks soil erosion, and the stepped resistance slope intercepts and slows the flow rate step by step. Its arc-shaped sides and horizontally set diversion guide edges work together to disperse concentrated water flow and guide it laterally along a preset path, effectively preventing gully formation and improving the slope's erosion resistance. The bottom drainage channel adopts an arc-shaped design to reduce drag and promote settlement. It is integrally cast with the slope layer and slope protection roadbed, ensuring a continuous and leak-proof structure. Combined with drainage pipes, it quickly guides the collected water away from the roadbed, preventing softening and instability. Reinforcing steel bars are installed inside the resistance slope and diversion guide edges, significantly enhancing the components' impact resistance, shear resistance, and deformation resistance, achieving a long-term unified function of roadbed protection and drainage.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A farmland roadbed structure with ecological slope protection and drainage functions includes a roadbed, a slope protection roadbed on the side of the roadbed, a concrete surface layer on the upper surface of the roadbed, a concrete slope layer on the side of the slope protection roadbed, a drainage ditch fixedly connected to the side of the concrete slope layer, multiple resistance slopes evenly laid on the side of the concrete slope layer, a diversion guide edge fixedly connected between adjacent resistance slopes, and reinforcing steel bars implanted in the inner cavity of the resistance slope and the diversion guide edge.

[0010] Furthermore, the slope protection roadbed is inclined downwards on its side, and the slope protection roadbed and drainage ditch are integrally cast with concrete.

[0011] Furthermore, the inner side of the drainage ditch is arc-shaped, and multiple drainage holes are provided on the drainage ditch.

[0012] Furthermore, the drainage ditch is uniformly connected to multiple drainage pipes on the side away from the concrete slope layer, and the drainage pipes are connected to drainage holes.

[0013] Furthermore, the resistance slope is arc-shaped on the side away from the concrete slope layer, and multiple resistance slopes are laid in a stepped manner from top to bottom along the inclined surface of the concrete slope layer.

[0014] Furthermore, there are multiple diversion guide edges, all on the same horizontal line.

[0015] 3. Beneficial Effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This scheme uses the flat structure of the concrete surface layer to quickly guide the water flow on the road to both sides during rainfall, avoiding the occurrence of water accumulation on the road and ensuring the normal passage safety of vehicles and agricultural machinery. After the water flow enters the slope protection roadbed area, the concrete slope layer forms a continuous protective interface, blocking the direct contact between the water flow and the soil, fundamentally curbing the loss of soil particles and the surface erosion of the slope caused by rainwater scouring. The stepped resistance slope intercepts the downward water flow step by step with its convex shape, significantly reducing the water flow speed. Its arc-shaped side design further disperses the concentrated water flow into multiple streams, weakening the impact energy on the slope. At the same time, the diversion guide edge is set horizontally between adjacent resistance slopes to guide the dispersed water flow laterally along the preset path, preventing the water flow from spreading disorderly along the slope and forming gullies. This achieves precise control and spatial distribution optimization of slope runoff, greatly improving the slope's ability to resist water erosion.

[0018] (2) The drainage ditch in this scheme is located at the bottom of the slope. Its arc-shaped inner side not only reduces the resistance when water flows through, but also helps the sediment settle and improves the drainage efficiency. At the same time, it is cast in one piece with the concrete slope layer and the slope protection roadbed to ensure the structure is continuous and leak-free, and avoids structural instability caused by damage at the joint. The collected water flows through the drainage ditch and is quickly discharged to the area away from the roadbed through the connected drainage pipe, effectively preventing the long-term retention of water from causing the roadbed to soften, settle or the slope to become unstable. In addition, the resistance slope and the diversion guide edge are reinforced with steel bars, which greatly improves the impact resistance, shear resistance and deformation resistance of these functional components, so that they can maintain the structural integrity in the complex environment of long-term water scouring, freeze-thaw cycle and soil lateral pressure, and ensure the safe operation and ecological function stability of the entire roadbed structure throughout its entire life cycle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a half-sectional internal structure diagram of the present invention;

[0021] Figure 3 This is a partial structural breakdown diagram of the present invention;

[0022] Figure 4 This is a partial structural schematic diagram of the present invention.

[0023] Explanation of the labels in the diagram:

[0024] 1. Roadbed; 2. Slope protection roadbed; 3. Concrete surface layer; 4. Concrete slope layer; 5. Drainage ditch; 6. Arc-shaped drainage channel; 7. Drainage hole; 8. Drainage pipe; 9. Resistance slope; 10. Diversion guide edge; 11. Reinforcing steel. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example 1:

[0029] Please see Figures 1-4 A farmland roadbed structure with ecological slope protection and drainage functions includes a roadbed 1, a slope protection roadbed 2 set on the side of the roadbed 1, a concrete surface layer 3 laid on the upper surface of the roadbed 1, a concrete slope layer 4 laid on the side of the slope protection roadbed 2, a drainage ditch 5 fixedly connected to the side of the concrete slope layer 4, multiple resistance slopes 9 evenly laid on the side of the concrete slope layer 4, a diversion guide edge 10 fixedly connected between adjacent resistance slopes 9, and reinforcing steel bars 11 implanted in the inner cavity of the resistance slopes 9 and the diversion guide edge 10.

[0030] Specifically, the slope protection roadbed 2 is inclined downwards on the side. The slope protection roadbed 2 and the drainage ditch 5 are integrally cast with concrete. The inner side of the drainage ditch 5 is arc-shaped. Multiple drainage holes 7 are opened on the drainage ditch 5. Multiple drainage pipes 8 are evenly connected on the side of the drainage ditch 5 away from the concrete slope layer 4. The drainage pipes 8 are connected to the drainage holes 7. The resistance slope 9 is arc-shaped on the side away from the concrete slope layer 4. Multiple resistance slopes 9 are laid in a stepped manner from top to bottom along the inclined surface of the concrete slope layer 4. There are multiple diversion guide edges 10 and they are on the same horizontal line.

[0031] Furthermore, during the use of the device, when water flows onto the road surface, the concrete surface layer 3, relying on its own flatness, guides the water flow to the slope protection roadbed 2 on both sides, preventing water accumulation on the road. At the same time, the strength of the concrete surface layer 3 itself resists vehicle loads, ensuring the road's passage function. After the water flow enters the side of the slope protection roadbed 2, it first contacts the concrete slope layer 4. This layer prevents the water flow from directly scouring the soil of the slope protection roadbed 2, reducing soil erosion. Subsequently, when the water flow flows down along the concrete slope layer 4, it will be blocked by the stepped resistance slope 9. The resistance slope 9 slows down the water flow speed through its raised structure, and its arc-shaped side disperses the water flow to both sides, reducing local scouring force. The diversion guide edge 10 between adjacent resistance slopes 9 further guides the dispersed water flow to the preset path along the horizontal line, preventing the disorderly flow of water from causing large-area scouring of the slope.

[0032] The water flow guided by the diversion guide side 10 flows to the drainage ditch 5. The drainage ditch 5 reduces the water flow resistance through the arc-shaped inner side and concentrates the collected water flow to the drainage pipe 8. The drainage pipe 8 then directs the water flow to an area far away from the roadbed and slope protection, avoiding roadbed softening or slope collapse caused by water stagnation.

[0033] The reinforcing steel bars 11 built into the resistance slope 9 and the diversion guide edge 10 enhance their structural strength, ensuring that they do not deform under long-term water flow impact and soil pressure, and further guaranteeing the stability of the slope protection function.

[0034] Roadbed 1 is the main load-bearing structure of the entire structure. It is composed of layered and compacted plain soil, sandy soil, or improved soil. If necessary, stabilizing materials such as lime and cement can be added to improve its bearing capacity and water stability. Slope protection roadbed 2 is set on the side of roadbed 1 as a slope support structure. Its function is to expand the cross-sectional width of the roadbed and enhance the overall anti-sliding and anti-overturning capacity. The side of slope protection roadbed 2 is set downward, and the inclination angle is determined according to the soil mechanical parameters and slope height, usually between 30° and 60°, to ensure slope stability. Concrete surface layer 3 is laid on the upper surface of roadbed 1 as the surface for vehicles or agricultural machinery to pass on. Its material is ordinary silicate cement concrete or fiber-reinforced concrete, which has high compressive strength and wear resistance.

[0035] The resistance slope 9 is evenly laid on the surface of the concrete slope layer 4, arranged in a stepped manner from top to bottom along its inclined surface. Each resistance slope 9 protrudes from the surface of the concrete slope layer 4, and its side away from the concrete slope layer 4 has an arc-shaped end face. This design can effectively disperse the concentrated scouring force of the water flow, increase the resistance of the water flow path, and slow down the flow velocity on the slope. There are multiple diversion guide edges 10, which are set between adjacent resistance slopes 9 and extend on the same horizontal line. They divide the water flow that flows longitudinally along the slope surface laterally and guide the water flow to divert to both sides to avoid the formation of concentrated gullies. The reinforcing steel bars 11 are embedded in the inner cavity of the resistance slope 9 and the diversion guide edges 10 to form a steel skeleton and enhance the overall tensile strength. The presence of the reinforcing steel bars 11 significantly improves the impact resistance and shear resistance of the resistance slope 9 and the diversion guide edges 10, ensuring that they maintain structural integrity under long-term rainwater scouring.

[0036] Working principle: During the use of the device, the concrete surface layer 3 guides the water flow to the slope protection roadbed 2 on both sides. After the water flow enters the side of the slope protection roadbed 2, it first contacts the concrete slope layer 4. This layer prevents the water flow from directly scouring the soil of the slope protection roadbed 2. Subsequently, when the water flow flows down along the concrete slope layer 4, it will be blocked by the stepped resistance slope 9, reducing the local scouring force. The diversion guide edge 10 between adjacent resistance slopes 9 further guides the dispersed water flow to the preset path along the horizontal line. The water flow guided by the diversion guide edge 10 flows to the drainage ditch 5, and the collected water flow is concentrated and guided to the drainage pipe 8. The drainage pipe 8 then discharges the water flow to an area away from the roadbed and slope protection.

[0037] The reinforcing steel bars 11 built into the resistance slope 9 and the diversion guide edge 10 enhance their structural strength, ensuring that they do not deform under long-term water flow impact and soil pressure, and further guaranteeing the stability of the slope protection function.

[0038] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A farmland roadbed structure with ecological slope protection and drainage functions, comprising a roadbed (1), characterized in that: The roadbed (1) is provided with a slope protection roadbed (2) on the side. The roadbed (1) is covered with a concrete surface layer (3). The slope protection roadbed (2) is covered with a concrete slope layer (4) on the side. A drainage ditch (5) is fixedly connected to the side of the concrete slope layer (4). Multiple resistance slopes (9) are evenly laid on the side of the concrete slope layer (4). A diversion guide edge (10) is fixedly connected between adjacent resistance slopes (9). Reinforcing steel bars (11) are implanted in the cavity of the resistance slope (9) and the diversion guide edge (10).

2. The farmland roadbed structure with ecological slope protection and drainage functions according to claim 1, characterized in that: The slope protection roadbed (2) is inclined downward on the side, and the slope protection roadbed (2) and the drainage ditch (5) are integrally cast by concrete.

3. The farmland roadbed structure with ecological slope protection and drainage functions according to claim 1, characterized in that: The inner side of the drainage ditch (5) is arc-shaped, and multiple drainage holes (7) are provided on the drainage ditch (5).

4. The farmland roadbed structure with ecological slope protection and drainage functions according to claim 3, characterized in that: The drainage ditch (5) is uniformly connected to multiple drainage pipes (8) on the side away from the concrete slope layer (4), and the drainage pipes (8) are connected to the drainage holes (7).

5. A farmland roadbed structure with ecological slope protection and drainage functions according to claim 1, characterized in that: The resistance slope (9) is arc-shaped on the side away from the concrete slope layer (4), and multiple resistance slopes (9) are laid in a stepped manner from top to bottom along the inclined surface of the concrete slope layer (4).

6. The farmland roadbed structure with ecological slope protection and drainage functions according to claim 1, characterized in that: The number of the diversion guide edges (10) is multiple and they are on the same horizontal line.

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