Stepped greenbelt structure capable of improving sponge function

Abstract

The utility model belongs to the technical field of urban municipal greening, and particularly relates to a stepped greenbelt structure for improving a sponge function, which comprises a stepped greenbelt body, and the stepped greenbelt body comprises a plurality of ecological retention facility units. Each ecological retention facility unit sequentially comprises a wetland purification and storage structure, a landscape planting area and a soil retaining structure in the horizontal direction; the wetland purification and storage structure comprises a detention pond, gravel filler laid in the detention pond and water-resistant wet plants planted in the gravel filler, particulate matter and pollutants in rainwater runoff are purified, and a perforated drainage pipe is arranged on a side slope of the side face of the detention pond. In the utility model, the ladder-shaped terrain is adopted, the rainwater runoff direction is changed, the water and soil loss is reduced, the limitation of soil heaping gradient is avoided, the landscape level is enriched, and the greenbelt sponge function is improved.

Description

Technical Field

[0001] This utility model belongs to the field of urban municipal greening technology, specifically relating to a stepped green space structure that enhances sponge city function. Background Technology

[0002] Utilizing landscapes to retain and purify rainwater, acting as a "sponge," is an effective approach to urban stormwater management, beyond conventional municipal engineering. Urban green spaces are natural sponges, efficiently absorbing, storing, purifying, and reusing rainwater through vegetated soil and surface water. This plays an irreplaceable role in maintaining urban hydrological balance, mitigating urban flooding, and improving the quality of the urban ecological environment. Topographical design is crucial in urban greening. However, some parks fail to adequately consider slope when piling soil, resulting in overly steep terrain. This negatively impacts visitor experience and safety while exacerbating soil erosion. Traditional methods such as turfing and planting vegetation are commonly used to prevent soil erosion. While these measures have some effect, they also have limitations. Although turf and vegetation effectively enhance soil stability, their protective effect is often significantly reduced under extreme weather conditions, such as torrential rains or strong winds. In addition, the maintenance costs of these greening measures should not be underestimated, requiring a large investment of manpower and resources for pruning, irrigation and fertilization.

[0003] Therefore, we urgently need to explore more efficient, environmentally friendly and economical soil and water conservation strategies to comprehensively enhance the ecological function and landscape value of urban green spaces. Summary of the Invention

[0004] The main purpose of this application is to provide a stepped green space structure that enhances the function of a sponge city, so as to combine the stepped terrain creation method with the sponge city green space to purify and store rainwater and achieve the purpose of soil and water conservation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A stepped green space structure to enhance sponge city function includes a stepped green space body, wherein the stepped green space body includes several ecological retention facility units, and each of the ecological retention facility units includes, in the horizontal direction, a wetland purification and storage structure, a landscape planting area and a retaining structure.

[0007] The wetland purification and storage structure includes a retention pond, gravel filler material laid in the retention pond, and water-tolerant plants planted in the gravel filler material. It purifies particulate matter and pollutants in rainwater runoff. Perforated drainage pipes are provided on the side slopes of the retention pond.

[0008] Preferably, the landscape planting area is covered with landscape plants.

[0009] Preferably, the perforated drainage pipe is located near the landscape planting area to prevent rainwater from stagnating too deeply and affecting the root growth of landscape plants.

[0010] Preferably, the perforated drainage pipe is located in the upper part of the side slope of the retention pond, where water is stored at the bottom of the stepped terrain, and can provide moisture for the growth of landscape plants through soil infiltration.

[0011] Preferably, the retaining structure is a precast slope toe protection block.

[0012] Preferredly, the precast slope protection blocks are made of concrete, masonry, or wooden piles to prevent landslides.

[0013] Preferably, the precast slope toe protection block has an L-shaped cross-section, and the horizontal portion of the precast slope toe protection block extends below the landscape planting area. When subjected to lateral pressure, it can more effectively disperse and resist these pressures, thereby protecting the slope toe from damage and reducing soil erosion.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The stepped terrain in this application changes the direction of rainwater runoff and reduces soil erosion.

[0016] 2. By using gravel filler and water-tolerant plants planted in the gravel filler, particulate matter and pollutants in rainwater runoff are purified, enabling rainwater to be reused after purification and reducing the cost of green space maintenance.

[0017] 3. The structure in this application is not limited by the slope of the soil mound, and the number of ecological retention facility units can be designed according to the slope of the soil mound. The overall structure enriches the landscape layers and improves the sponge function of green space. Attached Figure Description

[0018] Figure 1 The diagram shown is an overall schematic of the stepped green space structure that enhances the sponge city function according to this utility model.

[0019] Figure 2 The diagram shown is a schematic of the stepped green space structure that enhances the sponge city function according to this utility model.

[0020] Figure 3 The diagram shown is a schematic diagram of the ecological retention facility unit structure in this utility model;

[0021] Figure 4 The diagram shows the rainwater runoff distribution of the stepped green space.

[0022] Figure label:

[0023] 1-Retention pool; 2-Gravel filler; 3-Water-tolerant plants; 4-Perforated drainage pipe; 5-Landscape plants; 6-Precast slope protection block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 The present invention provides the following embodiments:

[0026] A stepped green space structure to enhance sponge city function includes a stepped green space body, which includes several ecological retention facility units. Each ecological retention facility unit includes, in the horizontal direction, a wetland purification and storage structure, a landscape planting area, and a retaining structure.

[0027] The wetland purification and storage structure includes a retention pond 1, gravel filler 2 laid in the retention pond 1, and water-tolerant plants 3 planted in the gravel filler 2. It purifies particulate matter and pollutants in rainwater runoff. Perforated drainage pipes 4 are provided on the side slope of the retention pond 1.

[0028] Specifically, the landscape planting area contains 5 types of landscape plants.

[0029] Specifically, the perforated drainage pipe 4 is located near the landscape planting area to prevent rainwater from stagnating too deeply and affecting the root growth of the landscape plants 5.

[0030] Specifically, the perforated drainage pipe 4 is located in the upper part of the side slope of the retention pond 1, where water is stored at the bottom of the stepped terrain. It can provide water for the growth of landscape plants 5 through soil infiltration.

[0031] Specifically, the retaining structure is a precast slope toe protection block 6.

[0032] Specifically, the precast slope protection block 6 is made of concrete, masonry, or wooden piles to prevent landslides.

[0033] Specifically, the precast slope protection block 6 has an L-shaped cross section, and the horizontal part of the precast slope protection block 6 extends to the bottom of the landscape planting area, which greatly reduces soil erosion.

[0034] The specific implementation method of this embodiment is as follows: multiple gravel fillers 2 and prefabricated slope protection blocks 6 are combined to form part of a stepped terrain. A retention pool 1 is provided below and perforated drainage pipes 4 are installed to realize the drainage function, so as to change the runoff direction of rainwater and discharge excess rainwater. Landscape plants 5 and water-tolerant plants 3 are then planted to reduce soil erosion. It is not limited by the slope of the soil mound, and the overall appearance is beautiful and layered, which improves the sponge function of the green space.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A stepped green space structure to enhance sponge city function, characterized in that: It includes a stepped green space body, which includes several ecological retention facility units. Each ecological retention facility unit includes, in the horizontal direction, a wetland purification and storage structure, a landscape planting area, and a retaining structure. The wetland purification and storage structure includes a retention pond (1), gravel filler (2) laid in the retention pond (1), and water-tolerant plants (3) planted in the gravel filler (2). The side slope of the retention pond (1) is provided with perforated drainage pipes (4).

2. The stepped green space structure for enhancing sponge city function according to claim 1, characterized in that: The perforated drainage pipe (4) is located in the near-landscape planting area.

3. The stepped green space structure for enhancing sponge city function according to claim 1, characterized in that: The perforated drainage pipe (4) is located in the upper part of the side slope of the retention pool (1).

4. A stepped green space structure for enhancing sponge city function according to claim 1, characterized in that: The landscape planting area is covered with landscape plants (5).

5. A stepped green space structure for enhancing sponge city function according to claim 1, characterized in that: The retaining structure is a precast slope toe protection block (6).

6. A stepped green space structure for enhancing sponge city function according to claim 5, characterized in that: The precast slope protection block (6) is made of concrete, masonry or wooden piles.

7. A stepped green space structure for enhancing sponge city function according to claim 5 or 6, characterized in that: The precast slope protection block (6) has an L-shaped cross section, and the horizontal part of the precast slope protection block (6) extends to the bottom of the landscape planting area.

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