Ecological grass planting ditch for sponge city

Abstract

The utility model provides a sponge city ecological grass planting ditch which comprises a ditch body and hard earth surfaces, the ditch body is distributed between the two hard earth surfaces, a water storage pool is arranged between the ditch body and the hard earth surfaces, the ditch body comprises a base, a filter layer and a planting soil layer, the base, the filter layer and the planting soil layer are sequentially arranged from bottom to top, and the filter layer and the planting soil layer are arranged in a staggered mode. And a first cavity and a second cavity are formed in the reservoir. Through the transversely arranged communicating pipe and the permeation pipe vertically arranged on the communicating pipe, root systems of plants can be irrigated from the top and the bottom of the planting soil layer at the same time in rainy days, and redundant water in the planting soil layer can enter the filtering layer to be filtered; filtered water can enter the second cavity through the water filtering layer under the action of gravity, so that the purified water is collected, and redundant rainwater in the first cavity can be temporarily stored in the first cavity for subsequent use.

Description

Technical Field

[0001] The utility model relates to the technical field of sponge cities, in particular to an ecological grass-planting ditch in a sponge city. Background Art

[0002] Sponge city means that the city can adapt to environmental changes and respond to natural disasters like a sponge. When it rains, the city can absorb, infiltrate, purify and store water, and "release" and utilize the stored water when needed. The construction of sponge city should follow the principle of ecological priority, combine natural methods with artificial measures, and maximize the accumulation, infiltration and purification of rainwater in urban areas on the premise of ensuring the safety of urban drainage and flood prevention, so as to promote the utilization of rainwater resources and the protection of ecological environment;

[0003] Announcement No. "CN212248590U" provides a sponge city ecological grass-planting ditch system, including a planting soil layer, a filter layer and an original soil layer arranged in sequence from top to bottom, and also includes an infiltration pipe arranged in the filter layer and the planting soil layer, and a drainage pipe arranged in the original soil layer. This solution not only saves space, but also has a richer variety of plants and can provide a variety of habitats; and compared with artificial ditch-style grass ditches, ecological grass-planting ditches can provide a larger flexible space, and the permeability of the grass slope is more conducive to the rapid infiltration and diversion of rainwater;

[0004] However, the above solution still has the following defects:

[0005] In the above scheme, the infiltration pipe cannot realize the irrigation of the planting soil layer horizontally, and cannot realize the filtering function of the water body, so that most of the rainwater will be discharged through the drainage pipe, and the rainwater cannot be utilized. Utility Model Content

[0006] The purpose of the utility model is to provide a sponge city ecological grass-planting ditch to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A sponge city ecological grass-planted ditch comprises a ditch body and a hard surface, wherein the ditch body is distributed between two hard surfaces, a water reservoir is arranged between the ditch body and the hard surface, the ditch body comprises a base, a filter layer and a planting soil layer, the base, the filter layer and the planting soil layer are arranged in sequence from bottom to top, a first cavity and a second cavity are arranged in the water reservoir, a connecting pipe is arranged between the two water reservoirs, a plurality of infiltration pipes are arranged on the top of the connecting pipe, the infiltration pipes extend laterally into the planting soil layer, a water filter layer is arranged on the surface of the water reservoir, and the filter layer is connected to the second cavity through the water filter layer.

[0009] Preferably, two slopes are provided on the top of the water reservoir, and a through groove is provided at the connection between the two slopes.

[0010] Preferably, an X-shaped support rod is vertically fixed to the inner wall of the first cavity.

[0011] Preferably, the filter layer is gravel, pebbles, or a mixture of gravel and pebbles.

[0012] Preferably, the water filtration layer comprises a frame and a permeable membrane, the permeable membrane is arranged inside the frame, and the frame is installed on the surface of the water reservoir.

[0013] Preferably, the base has an inclined slope, and the slope of the base is 15° to 20°.

[0014] Preferably, the hard surface is a park path, a runway or a square, and the hard surface has an inclined slope, and the inclination of the hard surface is 3° to 5°.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model uses the connecting pipe arranged horizontally and the infiltration pipe arranged vertically on the connecting pipe, so that the root system of the plant can be watered from the top and the bottom of the planting soil layer at the same time on rainy days, and the excess water in the planting soil layer can enter the filtering layer for filtration, and the filtered water can enter the second cavity through the filtering layer under the action of gravity, so as to realize the collection of purified water, and the excess rainwater in the first cavity can be temporarily stored inside for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the water storage tank of the utility model;

[0019] Figure 3 This is a schematic diagram of the main structure of the water filtration layer of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the water filter layer of the utility model.

[0021] In the figure: 1. Hard surface; 2. Reservoir; 3. Base; 4. Filter layer; 5. Planting soil layer; 6. First cavity; 7. Second cavity; 8. Connecting pipe; 9. Infiltration pipe; 10. Filter layer; 11. Slope; 12. Through groove; 13. X-shaped support rod; 14. Frame; 15. Permeable membrane. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A sponge city ecological grass-planting ditch comprises a ditch body and a hard surface 1, wherein the ditch body is distributed between two hard surfaces 1, a water reservoir 2 is arranged between the ditch body and the hard surface 1, the ditch body comprises a base 3, a filter layer 4 and a planting soil layer 5, the base 3, the filter layer 4 and the planting soil layer 5 are arranged in sequence from bottom to top, a first cavity 6 and a second cavity 7 are arranged in the water reservoir 2, a connecting pipe 8 is arranged between the two water reservoirs 2, a plurality of infiltration pipes 9 are arranged on the top of the connecting pipe 8, and the infiltration pipes 9 extend laterally into the planting soil layer 5, a water filter layer 10 is arranged on the surface of the water reservoir 2, the filter layer 4 is connected to the second cavity 7 through the water filter layer 10, two slopes 11 are arranged on the top of the water reservoir 2, and a through groove 12 is arranged at the connection of the two slopes 11.

[0025] See also Figure 1 , 2 , 3 and 4, after the rainwater enters the first cavity 6 through the through groove 12, a communicating vessel is formed between the two first cavities 6 and the connecting pipe 8. When the liquid level inside the first cavity 6 is higher than the connecting pipe 8, the water can enter the connecting pipe 8 through the first cavity 6, and enter the infiltration pipe 9 through the connecting pipe 8, and finally enter the bottom of the planting soil layer 5 through the infiltration pipe 9. On rainy days, the infiltration pipe 9 can irrigate from the bottom of the planting soil layer 5, and the rainwater can irrigate from the top of the planting soil layer 5, thereby ensuring that the roots of the plants can absorb sufficient water.

[0026] The filter layer 4 is gravel, pebbles, or a mixture of gravel and pebbles. The filter layer 10 includes a frame 14 and a permeable membrane 15 . The permeable membrane 15 is arranged inside the frame 14 , and the frame 14 is installed on the surface of the water reservoir 2 .

[0027] See also Figure 1 and 4 The filter layer 4 can filter the excess water in the planting soil layer 5, and the permeable membrane 15 can filter the water again to ensure that the water entering the second cavity 7 does not contain large particles of impurities.

[0028] The base 3 has an inclined slope of 15° to 20°. The hard surface 1 is a park path, a runway or a square. The hard surface 1 has an inclined slope of 3° to 5°.

[0029] See also Figure 1 The runoff of the hard surface 1 can enter the first cavity 6 through the slope 11 and the through groove 12, and the base 3 can guide the water filtered by the filter layer 4 to the vicinity of the water filter layer 10 under the action of gravity, and make the water enter the second cavity 7 for temporary storage after passing through the water filter layer 10. The second cavity 7 can be connected to the water plant and can be used directly after purification. The first cavity 6 needs to be connected to the drainage pipe to control the space inside the first cavity 6 during the flood season.

[0030] Embodiment 2:

[0031] The water reservoir 2 in the above scheme can store rainwater, but since the internal space of the first cavity 6 is relatively large, in the no-load state, the interior of the first cavity 6 will be subjected to lateral pressure from both the ditch body and the hard surface 1. Long-term squeezing will cause the water reservoir 2 to deform or even rupture. Therefore, in this embodiment, an X-shaped support rod 13 is vertically fixed to the inner wall of the first cavity 6. The setting of the X-shaped support rod 13 can play a supporting role perpendicular to the force direction of the water reservoir 2 inside the first cavity 6, thereby preventing the water reservoir 2 from deforming and rupturing.

[0032] Structural principle: After entering the first cavity 6 through the through groove 12, the rainwater will gradually accumulate. When the liquid level in the first cavity 6 reaches a certain height, the rainwater can enter the connecting pipe 8 through the first cavity 6, and enter the infiltration pipe 9 through the connecting pipe 8, and finally enter the bottom of the planting soil layer 5 through the infiltration pipe 9, and the excess water in the planting soil layer 5 can enter the filter layer 4 for filtration, and the filtered water can enter the second cavity 7 through the filter layer 10 under the action of gravity, thereby realizing the collection of purified water.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sponge city ecological grass-planting ditch, comprising a ditch body and a hard surface (1), characterized in that: The ditch body is distributed between two hard surfaces (1); a water reservoir (2) is arranged between the ditch body and the hard surface (1); the ditch body comprises a base (3), a filter layer (4) and a planting soil layer (5); the base (3), the filter layer (4) and the planting soil layer (5) are arranged in sequence from bottom to top; a first cavity (6) and a second cavity (7) are arranged in the water reservoir (2); a connecting pipe (8) is arranged between the two water reservoirs (2); a plurality of infiltration pipes (9) are arranged on the top of the connecting pipe (8); the infiltration pipes (9) extend laterally into the planting soil layer (5); a water filter layer (10) is arranged on the surface of the water reservoir (2); the filter layer (4) is connected to the second cavity (7) through the water filter layer (10).

2. The sponge city ecological grass-planting ditch according to claim 1 is characterized by: Two slopes (11) are arranged on the top of the water reservoir (2), and a through groove (12) is arranged at the connection between the two slopes (11).

3. The sponge city ecological grass-planting ditch according to claim 1 is characterized by: An X-shaped support rod (13) is vertically fixed to the inner wall of the first cavity (6).

4. The sponge city ecological grass-planting ditch according to claim 1 is characterized by: The filter layer (4) is gravel, pebbles, or a mixture of gravel and pebbles.

5. The sponge city ecological grass-planting ditch according to claim 1 is characterized by: The water filtration layer (10) comprises a frame (14) and a permeable membrane (15); the permeable membrane (15) is arranged inside the frame (14); and the frame (14) is installed on the surface of the water reservoir (2).

6. The sponge city ecological grass-planting ditch according to claim 1 is characterized by: The base (3) has an inclined slope, and the slope of the base (3) is 15° to 20°.

7. The sponge city ecological grass-planting ditch according to claim 1 is characterized by: The hard surface (1) is a park path, a running track or a square, and the hard surface (1) has an inclined slope, and the inclination of the hard surface (1) is 3° to 5°.

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