Fabricated ecological grass planting ditch suitable for industrial area

Abstract

The utility model relates to an assembly type ecological grass planting ditch suitable for industrial districts, which comprises an energy dissipation pool, a multi-level stone purification ditch and a vegetation ditch, rainwater on a road converges into the energy dissipation pool, passes through the multi-level stone purification ditch and is finally discharged into the vegetation ditch, and rainwater pollution of the industrial districts is relieved through multiple times of purification. The problem that rainwater in an industrial area is not completely purified due to the fact that rainwater is filtered only through vegetation planted on the surface of a traditional grass planting ditch is solved. Meanwhile, due to the fact that the pipelines on the two sides of the road in the industrial area are numerous, the fabricated grassed swale provides detachable convenient conditions for the pipeline maintenance problem possibly occurring in the later period, and the filler in the grassed swale can be conveniently replaced through the fabricated structure, so that the service life of the ecological grassed swale is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of landscape engineering, in particular to an assembled ecological grass-planting ditch suitable for industrial areas. Background Art

[0002] In the context of urban construction, industrial plants are limited by their own layout and production characteristics, which results in their hard sites being unable to be transformed into sponges and having small green areas. When rainwater falls from the road into wetlands or lakes in the city, it often carries pollutants and impurities from the ground, affecting the water quality of the wetlands or lakes, leading to large surface rainwater runoff and serious rainwater pollution.

[0003] The grass-planted ditch can collect, transport and discharge runoff rainwater, and connect various municipal facilities, urban rainwater pipe systems and excessive rainwater runoff discharge systems to have a certain purification function. At the same time, the vegetation or facilities in the grass-planted ditch can filter impurities carried in the rainwater, playing the role of filtering and purifying rainwater. However, the traditional grass-planted ditch structure generally filters rainwater through the vegetation planted on its surface. When the rainfall is large, the rainwater flowing into the grass-planted ditch cannot infiltrate and be retained in time, and it is easy to submerge the vegetation, making the grass-planted ditch lose the effect of filtering rainwater, and even causing the death of vegetation, thereby destroying the water storage and filtration function of the grass-planted ditch structure. In addition, the vegetation planted on the surface does not completely purify rainwater in industrial areas. Due to the high pollution in industrial plants, the service life of the ecological grass-planted ditch will also be short.

[0004] The prior art (CN217840249U) discloses a multi-stage purification pebble ditch for sponge cities, including a filling area, a diversion area and an overflow well. The filling area and the diversion area are arranged in a stepped manner. The multi-stage purification pebble ditch can not only increase the length of surface runoff, reduce the peak flow of runoff, reduce the flow rate of rainwater runoff, and alleviate the scouring force of runoff, but also increase the structural stability of the slope of the ecological grass-planting ditch. However, it is not easy to disassemble and replace, and the later maintenance cost is high. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, the utility model provides an assembled ecological grass-planting ditch suitable for industrial areas, which is used to reduce rainwater runoff and enhance rainwater purification.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] An assembled ecological grass-planting ditch suitable for industrial areas includes an energy dissipation pool, a multi-level stone purification ditch and a vegetation ditch. The head and tail of the multi-level stone purification ditch are respectively connected to the energy dissipation pool and the vegetation ditch. Rainwater on the road is collected into the energy dissipation pool through a water inlet, and then flows into the grass-planting ditch through the multi-level stone purification ditch.

[0008] As a preferred technical solution, there are several energy dissipation pools, which are arranged at equal intervals along the road direction.

[0009] As a preferred technical solution, the multi-level stone purification ditch is set obliquely, and the heights of the energy dissipation pool, the multi-level stone purification ditch and the vegetation ditch are set from high to low.

[0010] As a preferred technical solution, the stones of the multi-level stone purification ditch are placed in order from large to small according to the particle size, namely crushed stone, gravel and zeolite. Different types of crushed stone are separated by steel mesh, and the pore size of the steel mesh is smaller than the particle size of the stone above it.

[0011] As a preferred technical solution, the bottom of the multi-level stone purification ditch is a purification ditch prefabricated with reinforced concrete, and the head and tail of the purification ditch are respectively connected to the energy dissipation pool and the vegetation ditch.

[0012] As a preferred technical solution, the vegetation ditch comprises a vegetation layer, a planting soil layer, a filter medium layer, a permeable geotextile, and a gravel drainage layer from top to bottom.

[0013] As a preferred technical solution, the vegetation layer is planted with water-resistant herbaceous plants.

[0014] As a preferred technical solution, the filter medium layer is made of a mixture of fine sand and soil, and has a thickness of 200 to 300 mm.

[0015] As a preferred technical solution, the gravel drainage layer is formed by piling up gravels with a particle size between 20 and 30 mm.

[0016] As a preferred technical solution, the infiltrated rainwater passes through the gravel drainage layer and is discharged into the rainwater pipe through a permeable pipe.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The utility model is suitable for the assembled ecological grass-planting ditch in industrial areas, which facilitates the replacement of the stone in the filling area and effectively solves the problem of short service life of the ecological grass-planting ditch caused by more pollution in industrial plants.

[0019] (2) The utility model is suitable for the assembled ecological grass-planting ditch in industrial areas, which is easy to install and disassemble, so it can actively deal with the maintenance problems that may occur in the pipeline lines along the roads in industrial plants and facilitate restoration after maintenance.

[0020] (3) The assembled ecological grass-planted ditch suitable for industrial areas of the utility model has a multi-level purification capacity, which can effectively alleviate the problems of large rainwater runoff and serious rainwater pollution faced by industrial plants. When there is rainfall in the flood season, it can absorb, store, infiltrate and purify rainwater on the spot or nearby, replenish groundwater and regulate water circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the assembled ecological grass-planting ditch suitable for industrial areas of the utility model;

[0022] Figure 2 It is a cross-sectional view of the assembled ecological grass-planting ditch suitable for industrial areas of the utility model.

[0023] In the figure: 1. Road; 11. Water inlet; 2. Energy dissipation pool; 21. Energy dissipation crushed stone layer; 3. Multi-level stone purification ditch; 31. Crushed stone; 32. Gravel; 33. Zeolite; 34. Steel mesh; 35. Purification ditch; 4. Vegetation ditch; 41. Vegetation layer; 42. Planting soil layer; 43. Filter medium layer; 44. Permeable geotextile; 45. Gravel drainage layer; 5. Permeable pipe; 6. Rainwater pipe; 7. Green space. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described below in conjunction with specific implementation methods:

[0025] like Figure 1 As shown, an assembled ecological grass-planting ditch suitable for industrial areas includes a plurality of energy dissipation pools 2, a multi-level stone purification ditch 3 and a vegetation ditch 4 arranged at equal intervals along the direction of the road 1. The head and tail of the multi-level stone purification ditch 3 are respectively connected to the energy dissipation pool 2 and the vegetation ditch 4. The rainwater on the road 1 is collected into the energy dissipation pool 2 through the water inlet 11. The energy dissipation pool 2 is filled with an energy dissipation gravel layer 21 formed by gravel. The energy dissipation gravel layer 21 can perform preliminary purification on the rainwater flowing through, filter out larger pieces of pollutants, and then the rainwater is collected into the grass-planting ditch through the multi-level stone purification ditch 3. There is a green space 7 between the energy dissipation pools 2 and on the side of the vegetation ditch 4 away from the multi-level stone purification ditch 3.

[0026] The spacing between two adjacent energy dissipation pools 2 can be determined after the design rainfall of the site is determined, and the rainfall runoff coefficient is determined according to the underlying surface conditions, so as to calculate the runoff volume of the catchment area and then analyze it.

[0027] like Figure 2As shown, the multi-level stone purification ditch 3 is tilted. Through the height difference design, the rainwater in the energy dissipation pool 2 will flow into the multi-level stone purification ditch 3, and the rainwater can flow through the multi-level stone purification ditch 3 by gravity to complete multiple filtration and purification. The stones of the multi-level stone purification ditch 3 are placed in order from large to small according to the particle size, namely crushed stone 31, gravel 32 and zeolite 33. The different types of crushed stones 31 are separated by a steel mesh 34, and the aperture of the steel mesh 34 is smaller than the particle size of the stone above it. The bottom of the multi-level stone purification ditch 3 is a purification ditch 35 prefabricated with reinforced concrete. The width and length of the purification ditch 35 are specifically designed according to the different runoff in the catchment area. When the pipelines on both sides of the road 1 need to be repaired, the purification ditch 35 can be directly dug out and transported to the open space. After the repair is completed, the purification ditch 35 is placed in place, and the head and tail of the purification ditch 35 are respectively connected to the energy dissipation pool 2 and the vegetation ditch 4. When there are many pollutants in the multi-level purification ditch, the stones can be replaced.

[0028] like Figure 2 As shown, rainwater finally flows into the vegetation ditch 4 from the multi-level stone purification ditch 3, and the plants planted in the vegetation ditch 4 can be selected according to the region. From top to bottom, the vegetation ditch 4 is respectively composed of a vegetation layer 41, a planting soil layer 42, a filter medium layer 43, a permeable geotextile 44, and a gravel drainage layer 45. The vegetation layer 41 is composed of water-resistant herbaceous plants, which can enhance filtration and remove some pollutants; the planting soil layer 42 provides nutrients for the vegetation layer 41 and promotes vegetation growth, with a thickness of 300mm; the filter medium layer 43 is formed by a mixture of fine sand and soil, with a thickness between 200 and 300mm; the permeable geotextile 44 allows the purified rainwater to pass through, while preventing the filter layer medium from infiltrating; the gravel drainage layer 45 is formed by the accumulation of gravel 32 with a particle size between 20 and 30mm, with a thickness of 400mm. After the infiltrating rainwater passes through the gravel drainage layer 45, it is finally discharged into the rainwater pipe 6 through the permeable pipe 5.

[0029] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. An assembled ecological grass-planting ditch suitable for industrial areas, characterized in that: It includes an energy dissipation pool, a multi-level stone purification ditch and a vegetation ditch. The head and tail of the multi-level stone purification ditch are respectively connected to the energy dissipation pool and the vegetation ditch. Rainwater on the road is collected into the energy dissipation pool through the water inlet, and then flows into the grass-planting ditch through the multi-level stone purification ditch.

2. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 1 is characterized in that: There are a plurality of energy dissipation pools, which are arranged at equal intervals along the road direction.

3. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 1 is characterized in that: The multi-level stone purification ditch is arranged obliquely, and the heights of the energy dissipation pool, the multi-level stone purification ditch and the vegetation ditch are arranged from high to low.

4. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 1 is characterized in that: The stones of the multi-level stone purification ditch are placed in order from large to small in particle size, namely crushed stone, gravel and zeolite. Different types of crushed stones are separated by steel meshes, and the pore size of the steel meshes is smaller than the particle size of the stones above them.

5. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 1 is characterized in that: The bottom of the multi-level stone purification ditch is a purification ditch prefabricated with reinforced concrete, and the head and tail of the purification ditch are respectively connected to the energy dissipation pool and the vegetation ditch.

6. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 1 is characterized in that: The vegetation ditch comprises a vegetation layer, a planting soil layer, a filter medium layer, a permeable geotextile and a gravel drainage layer from top to bottom.

7. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 6 is characterized in that: The vegetation layer is planted with water-tolerant herbaceous plants.

8. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 6 is characterized in that: The thickness of the filter medium layer is between 200 and 300 mm.

9. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 6 is characterized in that: The gravel drainage layer is formed by piling up gravels with a particle size between 20 and 30 mm.

10. The assembled ecological grass-planting ditch suitable for industrial areas according to claim 6 is characterized in that: The infiltrated rainwater passes through the gravel drainage layer and is discharged into the stormwater channel through permeable pipes.

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