A rainwater erosion ditch protection structure in cold regions

Abstract

The present application relates to the technical field of erosion gully protection, and specifically discloses a cold region rainwater erosion gully protection structure, comprising: an erosion gully, a protection component, wherein the protection component is arranged on the inner side of the erosion gully, and a protection structure one, a protection structure two, a protection structure three and a protection structure four are arranged according to different slopes of the erosion gully to reduce the impact force of water flowing downward, thereby reducing the scouring force of the water flow on the erosion gully, wherein a non-woven fabric is arranged between a gabion stone cage and soil to play an isolation role, and a gravel layer can further disperse the impact force of the water flow, and the gabion stone cage is filled with gravel, thereby reducing the damage to the structure caused by the freezing environment, and enhancing the anti-erosion ability of the ditch, reducing the downward shear force of the water flow on the ditch, thereby more effectively preventing soil and water loss.

Description

Technical Field

[0001] The present application relates to the technical field of erosion gully protection, and in particular to a rainwater erosion gully protection structure in cold regions. Background Art

[0002] Due to the influence of extreme climatic conditions in high-altitude and cold areas, the surface vegetation is sparse, the ecological environment is fragile, and the soil's resistance to erosion is weak. The area is susceptible to rain erosion and mountain torrents. Especially in the rainy season, the water flow in mountain torrents and erosion gullies increases sharply, resulting in intensified erosion at the bottom of the gully and expansion of the gully banks, causing serious soil loss and posing a threat to farmland safety and the ecosystem. Therefore, protective structures are built on the bottom and walls of the erosion gullies.

[0003] The current protective structures use concrete dams and stone dams, etc., to build concrete or stone on the bottom and walls of the ditch to prevent rainwater from eroding the soil and water, thereby reducing soil erosion. However, the existing technology still has the following problems: the traditional stone dam structure lacks flexibility in design. When facing the ditch with severe rainwater erosion, it is difficult to effectively adjust the water flow speed and sediment interception. Under the scouring of water flow, the erosion ditch channel is intensified, and the concrete structure in cold regions is damaged by freeze-thaw. Summary of the invention

[0004] The present application solves the problem of the lack of design flexibility of traditional stone dam structures in the prior art by providing a rain erosion gully protection structure in cold regions. In the face of ditches with severe rain erosion, it is difficult to effectively adjust the water flow velocity and sediment retention. Under the scouring of water flow, the downcutting phenomenon of the erosion gully is aggravated, thereby enhancing the erosion resistance of the ditch and reducing the downcutting force of the water flow on the ditch, thereby more effectively preventing soil and water loss.

[0005] The present application provides a cold region rainwater erosion gully protection structure, comprising:

[0006] erosion gullies;

[0007] A protection component, wherein the protection component is arranged inside the erosion ditch;

[0008] The protection assembly includes protection structure one, protection structure two, protection structure three and protection structure four. The protection structure one, protection structure two, protection structure three and protection structure four are arranged in erosion gullies with different slopes. The protection structure one, protection structure two, protection structure three and protection structure four are all made of 50cm thick gabion stone cages wrapped with non-woven fabric.

[0009] Furthermore, the slopes of the erosion ditch are all provided with slope protection structures, which include a 30 cm thick Reynolds pad, a 10 cm thick gravel pad and a non-woven fabric, the non-woven fabric is in contact with the slope of the erosion ditch, the 10 cm thick gravel pad is arranged on the top of the non-woven fabric, and the 30 cm thick Reynolds pad is arranged on the top of the 10 cm thick gravel pad.

[0010] Furthermore, a dissipation barrier is provided on the inner side of the erosion ditch, and the dissipation barrier is provided downstream of the protective structure two, the protective structure three and the protective structure four. The height of the dissipation barrier is 0.5m. The dissipation barrier is made of gabion stone cages wrapped with non-woven fabric, and an energy dissipation pool is formed between the dissipation barrier and the protective structure two, the protective structure three and the protective structure four.

[0011] Furthermore, a tank protection section A is provided on one side of the protective structure one, and a tank protection section B is provided downstream of the erosion ditch. The length of the tank protection section B is four times the height of the protective structure two. The tank protection section B includes a 50 cm thick gabion stone cage, a 10 cm thick gravel cushion layer and a non-woven fabric. The non-woven fabric is in contact with the bottom of the ditch, the 10 cm thick gravel cushion layer is arranged on the top of the non-woven fabric, and the 50 cm thick gabion stone cage is arranged on the top of the 10 cm thick gravel cushion layer.

[0012] Furthermore, overflow ports are opened at the tops of the protective structures 1, 2, 3 and 4, the protective structure 1 is provided with one step, the protective structure 2 is provided with three steps, the protective structure 3 is provided with four steps, and the protective structure 4 is provided with five steps.

[0013] Furthermore, the height and width of the protective structure one are both 0.5m, and the protective structures two, three and four are arranged in steps, and each step of the protective structures two, three and four is both 0.5m in height and width.

[0014] Furthermore, an anti-scouring groove is provided at the end of the apron section B, and the anti-scouring groove is used to prevent displacement of the apron section B, and the anti-scouring groove is inserted into the bottom of the erosion ditch.

[0015] Furthermore, a bend anti-impact structure is provided at the bend of the erosion ditch, and the bend anti-impact structure is provided outside the gabion stone cage, and the thickness of the bend anti-impact structure is 0.5m.

[0016] Furthermore, the curve anti-impact structure includes a front layer and a rear layer of a waterproof pad, a support plate is fixedly provided on the side where the front layer and the rear layer of the waterproof pad are close to each other, a reinforcing leg is rotatably provided on the bottom end of the support plate, a middle frame is rotatably provided on the other end of the reinforcing leg, pressure-guiding arms are fixedly provided on both sides of the middle frame, an airbag is fixedly provided on the side where the pressure-guiding arms are away from each other, and the airbag is fixedly provided on the side where the front layer and the rear layer of the waterproof pad are close to each other.

[0017] Furthermore, an elastic component is fixedly provided on the inner side of the middle frame, and the elastic component is a mesh structure. An elastic wave net is fixedly provided between the support plates, and the elastic wave net is fixedly provided on the side where the front layer of the waterproof pad and the rear layer of the waterproof pad are close to each other. The elastic component and the elastic wave net are provided with a memory alloy material.

[0018] The technical solution provided by this application has at least the following technical effects or advantages:

[0019] 1. The present application sets protective structure 1, protective structure 2, protective structure 3 and protective structure 4 according to the different slopes of the erosion ditch to reduce the impact force of water flowing downward, thereby reducing the scouring force of the water flow on the erosion ditch. The non-woven fabric is set between the gabion stone cage and the soil to play an isolation role, and the gravel layer can further disperse the impact force of the water flow. The gabion stone cage is filled with gravel, thereby reducing the damage to the structure caused by the freezing environment, and enhancing the erosion resistance of the ditch, reducing the downward shear force of the water flow on the ditch, thereby more effectively preventing soil erosion.

[0020] 2. The present application sets up a curve anti-impact structure. Due to the elastic wave net in the curve anti-impact structure, the curve anti-impact structure as a whole can be bent, so it is set at the curve of the erosion ditch. When the front layer of the waterproof pad is subjected to the impact force of the water flow, the airbag will be compressed and at the same time the elastic component will be deformed, thereby reducing the impact force of the water flow and preventing the huge water flow from scouring the inner wall of the erosion ditch and other protective structures set up, thereby improving the protection capability of the erosion ditch. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the cross-sectional structure of the second protective structure in the implementation manner of the present application.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the protective structure 1 in the implementation manner of the present application.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the tank protection section A and the slope protection structure in the implementation manner of the present application.

[0024] Figure 4 It is a schematic diagram of the cross-sectional arrangement of a protective structure in an erosion gully with a slope according to an embodiment of the present application.

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the energy dissipation sill and slope protection structure in the implementation manner of the present application.

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the protective structure three in the implementation manner of the present application.

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the protective structure 4 in the implementation manner of the present application.

[0028] Figure 8 It is a schematic diagram of the structure of the erosion ditch, protection assembly and bend anti-collision structure in the implementation manner of the present application.

[0029] Fig. 9 It is a schematic diagram of the cross-sectional structure of the curve anti-collision structure in the implementation manner of the present application.

[0030] In the figure: 1. Erosion gully; 2. Protection component; 201. Protection structure one; 202. Tank protection section A; 203. Protection structure two; 204. Tank protection section B; 205. Energy dissipation pool; 206. Energy dissipation ridge; 207. Slope protection structure; 208. Protection structure three; 209. Protection structure four; 3. Curve anti-impact structure; 301. Front layer of waterproof pad; 302. Back layer of waterproof pad; 303. Support plate; 304. Reinforced support leg; 305. Middle frame; 306. Elastic member; 307. Pressure-conducting connecting arm; 308. Air bag; 309. Elastic wave net. DETAILED DESCRIPTION

[0031] The embodiment of the present application discloses a cold region rainwater erosion ditch protection structure, which reduces the impact force of water flowing downward by arranging protection structure 1 201, protection structure 2 203, protection structure 3 208 and protection structure 4 209 in sequence from upstream to downstream, thereby reducing the scouring force of water on the erosion ditch. The non-woven fabric is arranged between the gabion stone cage and the soil to play an isolation role, and the gravel layer can further disperse the impact force of the water flow. The gabion stone cage is filled with gravel to enhance the erosion resistance of the ditch, reduce the downward shear force of the water flow on the ditch, thereby more effectively preventing soil and water loss.

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Example

[0033] Reference Figure 1-Figure 7A cold region rainwater erosion gully protection structure disclosed in an embodiment of the present application includes an erosion gully 1 and a protection component 2, and the protection component 2 is arranged on the inner side of the erosion gully 1; the protection component 2 includes a protection structure 1 201, a protection structure 2 203, a protection structure 3 208 and a protection structure 4 209, and the protection structure 1 201, the protection structure 2 203, the protection structure 3 208 and the protection structure 4 209 are arranged in the erosion gully 1 with different slopes, and the protection structure 1 201, the protection structure 2 203, the protection structure 3 208 and the protection structure 4 209 are all made of 50 cm thick gabion stone cages wrapped with non-woven fabric.

[0034] Determine the most suitable location and layout for constructing protection component 2 according to the topography and slope of the erosion gully, then remove weeds, stones and other debris in the construction area to ensure that the construction area is flat and clean, and then, according to the design requirements, dig a foundation pit of appropriate depth and width to place the first layer of reinforced gabions. The design requirements include the height and width of protection structure one 201, protection structure two 203, protection structure three 208 and protection structure four 209.

[0035] Different protective structures can be designed for different slopes. Adjacent protective structures can also be changed according to the slope. The intervals between protective structures can also be different. For example, if the slope is steeper, protective structure three and protective structure four can be designed with an interval of 2m. When the slope is relatively gentle, protective structure one and protective structure two can be designed with an interval of 3m.

[0036] Assemble the prefabricated galvanized steel wire mesh frame into the shape of a gabion, ensuring that all connection points are firm. Then fill the selected stones evenly into the gabion, ensuring that the gabion is filled and there are no obvious gaps to form a gabion. Place the gabion filled with stones in the foundation pit and adjust the position to ensure its stability. Use special connection materials such as tying wires or buckles to connect the gabion units to each other to prevent the gabion from being washed down by water impact. The gabion is installed by stacking layer by layer to form a stepped protective structure. Each layer needs to be checked and adjusted to ensure the overall stability and straightness.

[0037] Reference Figure 1-Figure 7The slopes of the erosion ditch 1 are all provided with a slope protection structure 207, which includes a 30 cm thick Reynolds pad, a 10 cm thick gravel pad and a non-woven fabric, the non-woven fabric is in contact with the slope of the erosion ditch 1, the 10 cm thick gravel pad is arranged on the top of the non-woven fabric, the 30 cm thick Reynolds pad is arranged on the top of the 10 cm thick gravel pad, and the inner side of the erosion ditch 1 is provided with a force dissipation sill 206, which is arranged on the protective structure 203 and the protective structure 3. 208 and downstream of the protective structure 4 209, the energy dissipation sill 206 is 0.5m high and is made of gabion stone cage wrapped with non-woven fabric. An energy dissipation pool 205 is formed between the energy dissipation sill 206 and the protective structure 2 203, the protective structure 3 208 and the protective structure 4 209. A protective tank section A 202 is provided on one side of the protective structure 1 201, and a protective tank section B 204 is provided downstream of the erosion gully 1. The length of the protective tank section B 204 is four times that of the protective structure 203. The height of the protective structure 203 is 204, and the tank protection section B204 includes a 50cm thick gabion stone cage, a 10cm thick gravel cushion and a non-woven fabric. The non-woven fabric is in contact with the bottom of the ditch, and the 10cm thick gravel cushion is arranged on the top of the non-woven fabric. The 50cm thick gabion stone cage is arranged on the top of the 10cm thick gravel cushion. Overflow ports are opened on the tops of the protective structures 1 201, 203, 3 208 and 4 209. The protective structure 1 201 is provided with one step, the protective structure 2 203 is provided with three steps, the protective structure 3 208 is provided with four steps, and the protective structure 4 209 is provided with five steps. The height and width of the protective structure 1 201 are both 0.5m, the protective structures 2 203, 3 208 and 4 209 are arranged in a stepped manner, and each step of the protective structures 2 203, 3 208 and 4 209 is 0.5m high and 0.5m wide.

[0038] A slope protection structure 207 is arranged on the slope of the erosion ditch, and the slope protection structure 207 includes a 30 cm thick Reynolds pad, a 10 cm thick gravel cushion layer and non-woven fabrics, and a protective structure 1 201, a protective structure 203, a protective structure 3 208, a protective structure 4 209 and a slope protection structure 207 are arranged at the bottom of the erosion ditch. The setting method of the slope protection structure 207 is the same as the setting method of the slope protection structure 207 on the slope, wherein the non-woven fabric can play an isolating role, isolating the soil from the 30 cm thick Reynolds pad and the 10 cm thick gravel cushion layer, and the 10 cm thick gravel cushion layer can further disperse the impact force of the water flow, prevent further erosion caused by scouring at the bottom of the ditch, effectively prevent the loss of fine soil particles, and maintain the stability of the ditch slope;

[0039] Furthermore, when the water flow from the upstream reaches the protective structure 201, the water will accumulate at the overflow outlet before flowing downward, thereby effectively controlling the water flow and reducing soil erosion, and is suitable for relatively flat erosion gullies or areas with smaller water flow;

[0040] When water flows from upstream to the protective structure 203, the protective structure 203 will block the water flow, thereby further reducing the impact force of the water flow. Among them, the protective structure 1 201, the protective structure 203, the protective structure 3 208 and the protective structure 4 209 adopt a stepped design, with a relatively narrow top and a wide bottom, which effectively controls flooding, increases sediment deposition, and reduces erosion and siltation in the downstream area. At the same time, this design can effectively resist the impact pressure brought by the water flow. The wide design at the bottom helps to better disperse the pressure of the structure, reduce the pressure on the soil, and prevent the structure from collapsing. The water will enter the energy dissipation pool 205 through the overflow port. When the water in the energy dissipation pool 205 accumulates to the highest point of the energy dissipation sill 206, it will flow downstream to reach the protective structure 3 208, and flow through the protective structure 4 209 through the same process as above, and then reach the reduced impact force of the water flow on the structure, thereby reducing soil loss;

[0041] Among them, the protection structure 203 is suitable for areas with moderate erosion, has enhanced the ability to control water flow, and improved the protection ability. It is suitable for construction in areas with slightly complex terrain or large water flow. The protection structure 3 208 is used in areas with more severe erosion and can withstand greater water flow pressure and more severe erosion conditions. The protection structure 3 208 has a wide base to prevent the impact of larger water flows. Therefore, the design of the protection structure 3 208 has stronger durability and protection effect, and is suitable for large ditches and areas with rapid water flows, such as locations with large slopes. The protection structure 4 can be used for large ditches under extreme erosion conditions, providing the maximum level of protection, and can effectively resist extreme climate and severe soil erosion. It can be set in the place where the water flow is the fastest, such as an erosion ditch with a huge height difference. Therefore, the protection structure can be set according to the height difference and flatness of the terrain to achieve more effective protection for the erosion ditch.

[0042] Among them, an anti-scouring groove is set at the end of the tank protection section B204, and the anti-scouring groove is used to prevent the displacement of the tank protection section B204, and the anti-scouring groove is inserted into the bottom of the erosion ditch 1. Example

[0043] Reference Figure 8 and Fig. 9A bend anti-collision structure 3 is provided at the bend of the erosion ditch 1. The bend anti-collision structure 3 is provided outside the gabion stone cage. The thickness of the bend anti-collision structure 3 is 0.5m. The bend anti-collision structure 3 includes a front waterproof pad layer 301 and a rear waterproof pad layer 302. A support plate 303 is fixedly provided on one side where the front waterproof pad layer 301 and the rear waterproof pad layer 302 are close to each other. A reinforced support leg 304 is rotatably provided at the bottom end of the support plate 303. A middle connection frame 305 is rotatably provided at the other end of the reinforced support leg 304. Pressure-conducting connecting arms 3 are fixedly provided on both sides of the middle connection frame 305. 07. An airbag 308 is fixedly provided on the side where the pressure-guiding connecting arms 307 are far away from each other. The airbag 308 is fixedly provided on the side where the front layer 301 of the waterproof pad and the rear layer 302 of the waterproof pad are close to each other. An elastic component 306 is fixedly provided on the inner side of the middle frame 305. The elastic component 306 is a mesh structure. An elastic wave net 309 is fixedly provided between the support plates 303. The elastic wave net 309 is fixedly provided on the side where the front layer 301 of the waterproof pad and the rear layer 302 of the waterproof pad are close to each other. The elastic component 306 and the elastic wave net 309 are provided with memory alloy materials.

[0044] When water flows through a bend, it will impact the bend anti-impact structure 3. The front layer 301 of the waterproof pad in the bend anti-impact structure 3 will be close to the rear layer 302 of the waterproof pad due to the impact of the water flow, and the obtuse angle of the reinforced leg 304 will become larger. At the same time, the airbag 308 will be squeezed by the pressure-conducting arm 307, causing the airbag 308 to deform, and the elastic member 306 will be deformed and squeezed. The middle frame 305 is made of rubber material, and the connection with the reinforced leg 304 is made of metal material, which is convenient for the middle frame 305 and the elastic member 306 to deform, thereby cooperating with the airbag 308 to reduce the water flow impact force on the bend of the erosion ditch 1, thereby preventing the structure from being destroyed by the huge water flow impact force, further preventing soil erosion, and achieving a protective effect on the structure.

[0045] Working principle: Determine the most suitable location and layout for building protection components 2 according to the terrain and slope of the erosion gully, then remove weeds, stones and other debris in the construction area to ensure that the construction area is flat and clean, and then dig a foundation pit of appropriate depth and width according to design requirements to place the first layer of reinforced gabions. The design requirements include the height and width of protection structure 1 201, protection structure 2 203, protection structure 3 208 and protection structure 4 209;

[0046] Assemble the prefabricated galvanized steel wire mesh frame into the shape of a gabion, ensuring that all connection points are firm. Then fill the selected stones evenly into the gabion, ensuring that the gabion is filled and there are no obvious gaps to form a gabion. Place the gabion filled with stones in the foundation pit and adjust the position to ensure its stability. Use special connection materials such as lashing wires or buckles to connect the gabion units to each other to prevent the gabion from being washed down by water impact. The gabion is installed by stacking layer by layer to form a stepped protective structure. Each layer needs to be checked and adjusted to ensure the overall stability and straightness.

[0047] A slope protection structure 207 is arranged on the slope of the erosion ditch, and the slope protection structure 207 includes a 30 cm thick Reynolds pad, a 10 cm thick gravel cushion layer and non-woven fabrics, and a protective structure 1 201, a protective structure 203, a protective structure 3 208, a protective structure 4 209 and a slope protection structure 207 are arranged at the bottom of the erosion ditch. The setting method of the slope protection structure 207 is the same as the setting method of the slope protection structure 207 on the slope, wherein the non-woven fabric can play an isolating role, isolating the soil from the 30 cm thick Reynolds pad and the 10 cm thick gravel cushion layer, and the 10 cm thick gravel cushion layer can further disperse the impact force of the water flow, prevent further erosion caused by scouring at the bottom of the ditch, effectively prevent the loss of fine soil particles, and maintain the stability of the ditch slope;

[0048] Furthermore, when the water flow from the upstream reaches the protective structure 201, the water will accumulate at the overflow outlet before flowing downward, thereby effectively controlling the water flow and reducing soil erosion, and is suitable for relatively flat erosion gullies or areas with smaller water flow;

[0049] When water flows from upstream to the protective structure 203, the protective structure 203 will block the water flow, thereby further reducing the impact force of the water flow. Among them, the protective structure 1 201, the protective structure 203, the protective structure 3 208 and the protective structure 4 209 adopt a stepped design, with a relatively narrow top and a wide bottom, which effectively controls flooding, increases sediment deposition, and reduces erosion and siltation in the downstream area. At the same time, this design can effectively resist the impact pressure brought by the water flow. The wide design at the bottom helps to better disperse the pressure of the structure, reduce the pressure on the soil, and prevent the structure from collapsing. The water will enter the energy dissipation pool 205 through the overflow port. When the water in the energy dissipation pool 205 accumulates to the highest point of the energy dissipation sill 206, it will flow downstream to reach the protective structure 3 208, and flow through the protective structure 4 209 through the same process as above, and then reach the reduced impact force of the water flow on the structure, thereby reducing soil loss;

[0050] Among them, the second protective structure 203 is suitable for areas with moderate erosion, and has enhanced the ability to control water flow and improve the protective ability. It is suitable for construction in areas with slightly complex terrain or large water flow. The third protective structure 208 is used in areas with more serious erosion, and can withstand greater water flow pressure and more serious erosion conditions. The third protective structure 208 has a wide base, which can prevent the impact of larger water flow. Therefore, the design of the third protective structure 208 has stronger durability and protective effect, and is suitable for large ditches and areas with rapid water flow, such as locations with large slopes. The fourth protective structure can be used for large ditches under extreme erosion conditions, providing the maximum level of protection, and can effectively resist extreme climate and severe water and soil erosion. It can be set in the most rapid water flow, such as in an erosion ditch with a huge height difference. Therefore, the protective structure can be set according to the height difference and gentleness of the terrain to achieve more effective protection for the erosion ditch.

[0051] When water flows through a bend, it will impact the bend anti-impact structure 3. The front layer 301 of the waterproof pad in the bend anti-impact structure 3 will be close to the rear layer 302 of the waterproof pad due to the impact of the water flow, and the obtuse angle of the reinforced leg 304 will become larger. At the same time, the airbag 308 will be squeezed by the pressure-conducting arm 307, causing the airbag 308 to deform, and the elastic member 306 will be deformed and squeezed. The middle frame 305 is made of rubber material, and the connection with the reinforced leg 304 is made of metal material, which is convenient for the middle frame 305 and the elastic member 306 to deform, thereby cooperating with the airbag 308 to reduce the water flow impact force on the bend of the erosion ditch 1, thereby preventing the structure from being destroyed by the huge water flow impact force, further preventing soil erosion, and achieving a protective effect on the structure.

[0052] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0053] What has been described above is only a preferred specific implementation manner of the embodiments of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A cold region rainwater erosion gully protection structure, characterized by: include: Erosion gullies (1); A protection component (2), wherein the protection component (2) is arranged on the inner side of the erosion ditch (1); The protection assembly (2) comprises a protection structure 1 (201), a protection structure 2 (203), a protection structure 3 (208) and a protection structure 4 (209); the protection structure 1 (201), the protection structure 2 (203), the protection structure 3 (208) and the protection structure 4 (209) are arranged in erosion gullies (1) of different slopes; the protection structure 1 (201), the protection structure 2 (203), the protection structure 3 (208) and the protection structure 4 (209) are all made of 50 cm thick gabion cages wrapped with non-woven fabric; A bend anti-collision structure (3) is provided at the bend of the erosion ditch (1), the bend anti-collision structure (3) is provided outside the gabion stone cage, and the bend anti-collision structure (3) has a thickness of 0.5 m; The curved anti-collision structure (3) comprises a waterproof pad front layer (301) and a waterproof pad rear layer (302); a support plate (303) is fixedly arranged on the side where the waterproof pad front layer (301) and the waterproof pad rear layer (302) are close to each other; a reinforcing leg (304) is rotatably arranged at the bottom end of the support plate (303); a middle connection frame (305) is rotatably arranged at the other end of the reinforcing leg (304); pressure-guiding connecting arms (307) are fixedly arranged on both sides of the middle connection frame (305); an air bag (308) is fixedly arranged on the side where the pressure-guiding connecting arms (307) are separated from each other; and the air bag (308) is fixedly arranged on the side where the waterproof pad front layer (301) and the waterproof pad rear layer (302) are close to each other; An elastic component (306) is fixedly arranged on the inner side of the middle joint frame (305), the elastic component (306) being a mesh structure, an elastic wave net (309) is fixedly arranged between the support plates (303), the elastic wave net (309) is fixedly arranged on a side where the front layer (301) of the waterproof pad and the rear layer (302) of the waterproof pad are close to each other, and the elastic component (306) and the elastic wave net (309) are made of memory alloy material.

2. A cold region rainwater erosion gully protection structure as claimed in claim 1, characterized in that: The side slopes of the erosion ditch (1) are all provided with a slope protection structure (207), the slope protection structure (207) comprising a 30 cm thick Reynolds pad, a 10 cm thick gravel pad and a non-woven fabric, the non-woven fabric is in contact with the side slope of the erosion ditch (1), the 10 cm thick gravel pad is arranged on the top of the non-woven fabric, and the 30 cm thick Reynolds pad is arranged on the top of the 10 cm thick gravel pad.

3. A cold region rainwater erosion gully protection structure as claimed in claim 1, characterized in that: An energy dissipation sill (206) is arranged on the inner side of the erosion ditch (1). The energy dissipation sill (206) is arranged downstream of the second protective structure (203), the third protective structure (208) and the fourth protective structure (209). The height of the energy dissipation sill (206) is 0.5 m. The energy dissipation sill (206) is made of a gabion stone cage wrapped with non-woven fabric. An energy dissipation pool (205) is formed between the energy dissipation sill (206) and the second protective structure (203), the third protective structure (208) and the fourth protective structure (209).

4. A cold region rainwater erosion gully protection structure as claimed in claim 1, characterized in that: A tank protection section A (202) is provided on one side of the protective structure 1 (201), and a tank protection section B (204) is provided downstream of the erosion ditch (1). The length of the tank protection section B (204) is four times the height of the protective structure 2 (203). The tank protection section B (204) includes a 50 cm thick gabion stone cage, a 10 cm thick gravel cushion layer and a non-woven fabric. The non-woven fabric is in contact with the bottom of the ditch, the 10 cm thick gravel cushion layer is arranged on the top of the non-woven fabric, and the 50 cm thick gabion stone cage is arranged on the top of the 10 cm thick gravel cushion layer.

5. The cold region rainwater erosion gully protection structure according to claim 1, characterized in that: Overflow ports are provided at the tops of the protective structure one (201), the protective structure two (203), the protective structure three (208) and the protective structure four (209); the protective structure one (201) is provided with a first step, the protective structure two (203) is provided with a third step, the protective structure three (208) is provided with a fourth step, and the protective structure four (209) is provided with a fifth step.

6. A cold region rainwater erosion gully protection structure as claimed in claim 1, characterized in that: The height and width of the protective structure one (201) are both 0.5 m, and the protective structure two (203), the protective structure three (208) and the protective structure four (209) are arranged in steps, and the height and width of each step of the protective structure two (203), the protective structure three (208) and the protective structure four (209) are both 0.5 m.

7. A cold region rainwater erosion gully protection structure as claimed in claim 4, characterized in that: An anti-scouring groove is provided at the end of the apron section B (204), the anti-scouring groove is used to prevent displacement of the apron section B (204), and the anti-scouring groove is inserted into the bottom of the erosion ditch (1).

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