Recessed greenbelt sponge drainage system used beside airport runway

Abstract

The utility model discloses a concave greenbelt sponge drainage system used beside an airport runway, the system comprises an overflow well, a concave drainage module and a diversion belt, the overflow well is connected with the concave drainage module through a seepage drainage pipe, and the diversion belt is communicated with the overflow well through a pipeline; the overflow well and the concave drainage module are arranged in the middle separation strip, and the flow guide strip is arranged at the joint of the airport main runway and the middle separation strip; a plurality of overflow wells are arranged on one side of the middle separation strip and communicated with an urban rainwater pipe network through rainwater pipelines, the height of the two sides of the concave drainage module is larger than that of the middle of the concave drainage module, and a seepage drainage pipe is arranged in the middle of the concave drainage module and communicated with the overflow wells. The concave drainage module is arranged in the middle separation zone to drain water, and meanwhile water is drained into the overflow well, so that roadbed damage caused by excessive accumulated water in the middle separation zone is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of drainage and greening, and particularly relates to a concave green space sponge drainage system for the side of an airport runway. Background Art

[0002] Due to the special bearing capacity of the airport runway and the characteristics of long distance and wide span, the concrete ground of the runway slopes naturally towards the two sides for greening, and the transverse slope is not more than twelve per thousand. The accumulated water will flow into the intermediate separation belt between the main runway and the secondary runway; when the accumulated water in the intermediate separation belt is too much, it will cause damage to the airport runway subgrade due to water scouring, resulting in damage to the airport road. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies existing in the above-mentioned prior art, and provide a concave green space sponge drainage system for the side of an airport runway. The system of the utility model drains water by arranging a concave drainage module in the intermediate separation belt, and at the same time discharges it into an overflow well to prevent excessive water accumulation in the intermediate separation belt from causing damage to the roadbed.

[0004] In order to achieve the above-mentioned utility model purpose, the technical solution provided by the utility model patent is as follows:

[0005] A concave green space sponge drainage system for the side of an airport runway, the airport runway includes an airport main runway and an airport secondary runway, an intermediate separation belt is arranged between the airport main runway and the airport secondary runway, the system includes an overflow well, a concave drainage module and a diversion belt, the overflow well is connected with the concave drainage module through a permeable drainage pipe, and the diversion belt is communicated with the overflow well through a pipeline; the overflow well and the concave drainage module are arranged in the intermediate separation belt, and the diversion belt is arranged at the connection between the airport main runway and the intermediate separation belt; a plurality of overflow wells are arranged on one side of the intermediate separation belt, the overflow wells are communicated with the urban rainwater pipe network through rainwater pipelines, the heights on both sides of the concave drainage module are higher than the height in the middle of the concave drainage module, a permeable drainage pipe is arranged in the middle of the concave drainage module, and the permeable drainage pipe is communicated with the overflow well.

[0006] A concrete cushion is arranged at the bottom of the above-mentioned overflow well, plain soil is arranged at the bottom of the concrete cushion and the plain soil is tamped, a rainwater grate is arranged at the upper part of the overflow well, and the height of the retaining wall on one side of the overflow well close to the middle of the concave drainage module is less than the height of the retaining wall on the other side of the overflow well.

[0007] The slope ratios on both sides of the above-mentioned concave drainage module are 1:10. The concave drainage module includes a planting layer, a sandy soil layer, a gravel layer and plain soil. A planting layer is arranged at the upper end of the concave drainage module. 40% of sandy soil is mixed in the planting layer, and the planting layer is used for planting plants. A sandy soil layer is arranged at the lower end in the middle of the planting layer, and a gravel layer is arranged at the lower end of the sandy soil layer. The thicknesses of the planting layer, the sandy soil layer and the gravel layer are all 300 mm, and a drain pipe is arranged in the gravel layer; plain soil is arranged at the lower end of the gravel layer and the plain soil is tamped; the concave drainage module is arranged along the length of the median strip.

[0008] The above-mentioned drain pipe is arranged along the length direction of the median strip. A plurality of water inlet holes are opened on the pipe wall of the drain pipe, and the water inlet holes on the pipe wall of the drain pipe are arranged staggeredly. The aperture of the water inlet hole is 15-25 mm. A permeable geotextile is wrapped outside the pipe wall of the drain pipe, and the density of the geotextile is 200 g / ㎡.

[0009] The above-mentioned overflow well is arranged along the length of the median strip. The distance between adjacent overflow wells is 25-50 m. Drought-tolerant and waterlogging-tolerant turf is planted within 1 m around the overflow well.

[0010] The above-mentioned diversion belt is arranged along the length direction of the median strip. The whole diversion belt is in the shape of a long strip-shaped groove. A cover plate is arranged at the upper end of the diversion belt. A plurality of water permeable holes are opened on the end face of the cover plate. The groove at the lower end of the cover plate is used to store surface runoff and enter the overflow well through a pipeline. There is 100 mm thick concrete outside the diversion belt, 200 mm thick gravel is arranged at the bottom of the concrete, and plain soil is arranged at the bottom of the gravel and the plain soil is tamped.

[0011] Based on the above scheme, the device of the concave green space sponge drainage system for the airport runway side of the utility model has achieved positive and beneficial effects through practice:

[0012] 1. The concave green space sponge drainage system for the airport runway side of the utility model drains water by arranging a concave drainage module in the median strip and simultaneously drains it into the overflow well to prevent excessive water accumulation in the median strip from damaging the roadbed.

[0013] 2. The concave green space sponge drainage system for the airport runway side of the utility model lays a gravel layer around the drain pipe. When the water accumulation above the median strip enters the overflow well through the drain pipe, the gravel layer plays a role in water purification, improving the water purification rate and enabling the water in the overflow well to be directly used for road and greening spraying, thus improving the utilization rate of water.

[0014] 3. The concave green space sponge drainage system for the airport runway side of the utility model sets a diversion belt between the airport runway and the median strip, reducing the runoff speed and the influence of roadbed seepage. Brief Description of the Drawings

[0015] Figure 1 is a sectional view of the concave green space sponge drainage system in a concave green space sponge drainage system for the side of an airport runway of the present utility model.

[0016] Figure 2 is a top view of the diversion belt in a concave green space sponge drainage system for the side of an airport runway of the present utility model.

[0017] Figure 3 is in a concave green space sponge drainage system for the side of an airport runway of the present utility model Figure 2 Schematic diagram of A - A in

[0018] Figure 4 is a structural diagram of the infiltration and drainage pipe in a concave green space sponge drainage system for the side of an airport runway of the present utility model. Detailed Embodiment

[0019] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present invention will be described below through specific examples shown in the drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well - known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0020] As Figures 1-4 shown in, the present utility model belongs to a concave green space sponge drainage system for the side of an airport runway. The airport runway includes an airport main runway and an airport secondary runway. An intermediate separation belt is provided between the airport main runway and the airport secondary runway. The system includes an overflow well 1, a concave drainage module, and a diversion belt 3. The overflow well 1 is connected to the concave drainage module through an infiltration and drainage pipe 23. The diversion belt 3 is connected to the overflow well 1 through a pipeline. The overflow well 1 and the concave drainage module are arranged in the intermediate separation belt. The diversion belt 3 is provided at the connection between the airport main runway and the intermediate separation belt. A plurality of overflow wells 1 are provided on one side of the intermediate separation belt. The overflow well 1 is connected to the urban rainwater pipe network through a rainwater pipe 12. The heights on both sides of the concave drainage module are higher than the height in the middle of the concave drainage module. An infiltration and drainage pipe 23 is provided in the middle of the concave drainage module. The infiltration and drainage pipe 23 is connected to the overflow well 1. Drainage is carried out by setting a concave drainage module in the intermediate separation belt and discharging it into the overflow well 1 at the same time, preventing excessive water accumulation in the intermediate separation belt from damaging the roadbed.

[0021] A concrete cushion is provided at the bottom of the above-mentioned overflow well 1, and plain soil 13 is provided at the bottom of the concrete cushion and tamped. A rainwater grate 11 is provided at the upper part of the overflow well 1. The height of one side wall of the overflow well 1 near the middle of the concave drainage module is less than that of the other side wall of the overflow well 1. When the water accumulation in the middle of the concave drainage module exceeds the rainwater grate 11 at the upper end of the overflow well 1, the water accumulation enters the overflow well 1 through the rainwater grate 11, preventing the water from seeping into the roadbed and avoiding the damage of the roadbed.

[0022] The slope ratios on both sides of the above-mentioned concave drainage module are 1:10. The concave drainage module includes a planting layer 21, a sandy soil layer 22, a gravel layer 24 and plain soil 13. A planting layer 21 is provided at the upper end of the concave drainage module. 40% of sandy soil is mixed in the planting layer 21. The planting layer 21 is used for planting plants. A sandy soil layer 22 is provided at the lower end in the middle of the planting layer 21. The gravel layer 24 is provided at the lower end of the sandy soil layer 22. The thicknesses of the planting layer 21, the sandy soil layer 22 and the gravel layer 24 are all 300 mm. A drain pipe 23 is provided in the gravel layer 24. Plain soil 13 is provided at the lower end of the gravel layer 24 and tamped. The concave drainage module is arranged along the length of the median strip. By laying the gravel layer 24 around the drain pipe 23, when the water accumulation on the upper part of the median strip enters the overflow well 1 through the drain pipe 23, the gravel layer 24 plays a role in water purification, improving the water purification rate and enabling the water in the overflow well 1 to be directly used for road and greening spraying, thus improving the utilization rate of water.

[0023] The above-mentioned drain pipe 23 is arranged along the length direction of the median strip. A plurality of water inlet holes 231 are opened on the pipe wall of the drain pipe 23. The water inlet holes 231 on the pipe wall of the drain pipe 23 are arranged staggeredly. The aperture of the water inlet holes 231 is 15 - 25 mm. A permeable geotextile is wrapped outside the pipe wall of the drain pipe 23. The density of the geotextile is 200 g / ㎡.

[0024] The above-mentioned overflow well 1 is arranged along the length of the median strip. The distance between adjacent overflow wells 1 is 25 - 50 m. Drought-tolerant and waterlogging-tolerant turf is planted within 1 meter around the overflow well 1.

[0025] The above diversion strip 3 is arranged along the length direction of the median strip. The diversion strip 3 is integrally in the shape of a long strip-shaped groove. A cover plate 31 is provided at the upper end of the diversion strip 3. A plurality of water permeable holes are formed on the end face of the cover plate 31. The lower groove of the cover plate 31 is used to store surface runoff and enter the overflow well 1 through a pipeline. A 100-mm-thick concrete 32 is provided outside the diversion strip 3. A 200-mm-thick gravel 33 is provided at the bottom of the concrete 32. Plain soil 13 is provided at the bottom of the gravel and the plain soil 13 is tamped. By arranging the diversion strip 3 between the airport runway and the median strip, the runoff speed is reduced and the influence of roadbed seepage is decreased.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features without departing from the spirit of the technical solutions of the present invention, and all of them should be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A concave green sponge drainage system for use beside an airport runway, wherein the airport runway comprises a main runway and an auxiliary runway, and an intermediate dividing strip is provided between the main runway and the auxiliary runway, wherein: The system includes an overflow well, a recessed drainage module and a guide belt, wherein the overflow well is connected to the recessed drainage module through a seepage and drainage pipe, and the guide belt is connected to the overflow well through a pipe; the overflow well and the recessed drainage module are arranged in the middle dividing strip, and the guide belt is arranged at the connection between the main runway of the airport and the middle dividing strip; a plurality of overflow wells are arranged on one side of the middle dividing strip, and the overflow wells are connected to the urban rainwater network through rainwater pipes; the heights of the two sides of the recessed drainage module are higher than the height of the middle part of the recessed drainage module; a seepage and drainage pipe is arranged in the middle part of the recessed drainage module, and the seepage and drainage pipe is connected to the overflow well.

2. The concave green sponge drainage system for airport runways according to claim 1 is characterized in that: A concrete cushion is arranged at the bottom of the overflow well, and bare soil is arranged at the bottom of the concrete cushion and compacted. A rainwater grate is arranged at the top of the overflow well, and the height of the retaining wall on one side of the overflow well close to the middle of the concave drainage module is smaller than the height of the retaining wall on the other side of the overflow well.

3. The concave green sponge drainage system for airport runways according to claim 1 is characterized in that: The slope ratio on both sides of the concave drainage module is 1:

10. The concave drainage module includes a planting layer, a sand layer, a gravel layer and plain soil. A planting layer is arranged at the upper end of the concave drainage module. The planting layer is mixed with 40% sand and is used to plant plants. A sand layer is arranged at the lower end of the middle part of the planting layer. A gravel layer is arranged at the lower end of the sand layer. The thickness of the planting layer, the sand layer and the gravel layer are all 300 mm. A seepage pipe is arranged in the gravel layer; plain soil is arranged at the lower end of the gravel layer and the plain soil is compacted; the concave drainage module is arranged along the length of the middle dividing strip.

4. The concave green sponge drainage system for airport runways according to claim 3 is characterized in that: The seepage and drainage pipes are arranged along the length direction of the middle dividing zone. A plurality of water inlet holes are opened on the pipe wall of the seepage and drainage pipes. The water inlet holes on the pipe wall of the seepage and drainage pipes are arranged in a staggered manner. The aperture of the water inlet holes is 15-25mm. The outer side of the pipe wall of the seepage and drainage pipes is wrapped with a permeable geotextile, and the density of the geotextile is 200g / ㎡.

5. The concave green space sponge drainage system for airport runways according to claim 2 is characterized in that: The overflow wells are arranged along the length of the middle dividing strip, and the spacing between adjacent overflow wells is 25-50m. Drought- and flood-resistant turf is planted within 1 meter around the overflow wells.

6. The concave green sponge drainage system for airport runways according to claim 1 is characterized in that: The guide belt is arranged along the length direction of the middle dividing strip. The guide belt is in the shape of a long groove as a whole. A cover plate is provided at the upper end of the guide belt. A plurality of water-permeable holes are opened on the end surface of the cover plate. The groove at the lower end of the cover plate is used to store surface runoff and enter the overflow well through a pipeline. 100 mm thick concrete is provided on the outside of the guide belt, 200 mm thick gravel is provided at the bottom of the concrete, and plain soil is provided at the bottom of the gravel and compacted.

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