A lawn drainage structure
By setting up branch sand beds and main sand beds in the lawn, combined with branch plastic blind drains and main pipelines, a fishbone-shaped drainage structure is formed, which solves the problem of insufficient lawn permeability and achieves the effects of rapid drainage and healthy root system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU HUANMEI GARDEN ECOLOGICAL CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional lawn drainage systems are poorly permeable, which makes lawns prone to waterlogging during extreme weather or large-scale irrigation, affecting root growth and landscape appearance, and also incurring high maintenance costs.
The system employs a branch sand bed and a main sand bed structure, combined with branch plastic blind drains and main plastic blind drain pipes, to form a fishbone-shaped drainage network. The graded sand material is used to improve permeability and guide water flow, preventing water accumulation, while also enhancing the oxygen supply to the roots.
It improves the water permeability of the lawn and the oxygen supply to the roots, ensures timely drainage of rainwater, reduces the risk of waterlogging, and lowers maintenance costs.
Smart Images

Figure CN224531840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of landscape planting technology, specifically a lawn drainage structure. Background Technology
[0002] With the acceleration of urbanization and the increasing demand for ecological landscapes, the functionality and maintenance costs of lawns, as an important greening carrier, have received widespread attention. Traditional lawns have significant defects in drainage system design. Especially when dealing with extreme weather or large-scale irrigation, due to insufficient soil permeability or lawn topography, large areas of water can easily accumulate in the lawn. This can lead to root hypoxia and the proliferation of diseases, seriously affecting the lifespan and landscape effect of the lawn.
[0003] Most existing technologies rely on drainage through natural slopes or simple drainage ditches, which are difficult to achieve efficient flow diversion and rapid drainage. Furthermore, they lack systematic optimization of the root growth environment, resulting in a fragile lawn ecosystem and increased lawn maintenance costs. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model proposes the following technical solution:
[0005] A lawn drainage structure includes a foundation soil layer, a planting soil layer laid on the foundation soil layer, a turf layer laid on the planting soil layer, and multiple branch sand bed layers evenly distributed on the planting soil layer and arranged parallel to each other within the planting soil layer. A main sand bed layer is also provided on the foundation soil layer, located at the bottom of the planting soil layer, perpendicular to the installation direction of the branch sand bed layers, and positioned further from the turf layer within the planting soil layer than the branch sand bed layers.
[0006] Furthermore, the branch sand bed is composed of graded sand to filter rainwater, the main sand bed is composed of graded sand, and the main sand bed has the same function as the branch sand bed. The spacing between each branch sand bed in the planting soil layer is three meters, and the main sand bed and the branch sand bed are connected to facilitate the flow of rainwater.
[0007] Furthermore, a main pipeline is provided within the main sand bed layer. The main pipeline is laid at the bottom of the main sand bed layer. The main pipeline includes a plastic blind drain main pipe and a geotextile. The geotextile is wrapped around the plastic blind drain main pipe during the laying of the main pipeline to prevent soil from entering the main pipeline and causing blockage.
[0008] Furthermore, a branch plastic blind drain is fixedly installed on the main plastic blind drain. The branch plastic blind drain is set in the branch sand bed layer and is used to collect rainwater that seeps down from the branch sand bed layer. The laying direction of the branch plastic blind drain is perpendicular to the main plastic blind drain.
[0009] Furthermore, the multiple branch plastic blind drains form a fishbone structure with the main road to collect rainwater that seeps down from the planting soil layer.
[0010] The beneficial effects of this utility model compared with the prior art are: (1) This device greatly improves the permeability of the lawn by setting up a branch sand bed layer and a main sand bed layer. The special materials used in the branch sand bed layer and the main sand bed layer can also guide the water flow to converge, prevent rainwater from accumulating on the surface of the turf, and at the same time, the materials used in the branch sand bed layer and the main sand bed layer can also improve the oxygen content of the turf root system; (2) This device collects rainwater by setting up branch plastic blind drains and plastic blind drain main pipes in the branch sand bed layer and the main sand bed layer, so that rainwater can be discharged into the lawn in time, ensuring smooth drainage during large-scale rainfall and irrigation, and reducing the risk of lawn waterlogging. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of the present invention after it has been laid.
[0012] Figure 2 This is a schematic diagram of the branch sand bed layer laying structure of this utility model.
[0013] Figure 3 This is a schematic diagram of the branched plastic blind drain laying structure of this utility model.
[0014] Figure 4 This is a schematic diagram of the main sand bed laying structure of this utility model.
[0015] Attached diagram labels: 101-Foundation soil layer; 102-Main sand bed layer; 103-Planting soil layer; 104-Branch sand bed layer; 105-Turf; 201-Branch plastic blind drain; 202-Main plastic blind drain pipe. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.
[0017] like Figures 1 to 4As shown, a lawn drainage structure includes a foundation soil layer 101, a planting soil layer 103 laid on the foundation soil layer 101, and turf 105 laid on the planting soil layer 103. The planting soil layer 103 is used to provide nutrients for the growth of the turf 105. The foundation soil layer 101, planting soil layer 103, and turf 105 are the basis for this laying structure. When encountering concentrated lawns of more than 2,000 square meters or strip lawns of any width of more than 30 meters, the following laying structure can be adopted to enhance the drainage of the lawn.
[0018] like Figures 1 to 4 As shown, multiple branch sand bed layers 104 are arranged between the planting soil layer 103. These branch sand bed layers 104 are evenly distributed on the planting soil layer 103 and are arranged parallel to each other within the planting soil layer 103. Each branch sand bed layer 104 is composed of graded sand and possesses permeability and a certain degree of filtration, which can initially filter impurities in rainwater and irrigation water to reduce the risk of drainage pipe blockage. The spacing between each branch sand bed layer 104 within the planting soil layer 103 is three meters. A main sand bed layer 102 is also provided on the foundation soil layer 101. The main sand bed layer 102 is located at the bottom of the planting soil layer 103. The main sand bed layer 102 and the branch sand bed layers 104 are arranged parallel to each other within the planting soil layer 103. 4. The installation direction is vertical. For example, if the main sand bed layer 102 is laid horizontally on the foundation soil layer 101, then the branch sand bed layer 104 is laid vertically on the foundation soil layer 101. The main sand bed layer 102 and the branch sand bed layer 104 are connected to guide rainwater flow. The main sand bed layer 102 is composed of graded sand, and its function is the same as that of the branch sand bed layer 104. The main sand bed layer 102 is laid further away from the turf 105 in the planting soil layer 103 than the branch sand bed layer 104. In addition, it should be noted that the spacing and position design between the main sand bed layer 102 and the branch sand bed layer 104 can also be finely adjusted according to the soil structure and sand bed thickness to enhance adaptability to different site conditions.
[0019] like Figures 1 to 4As shown, a main pipeline is provided within the main sand bed 102. The main pipeline is laid at the bottom of the main sand bed 102 and includes a plastic blind drain main pipe 202 and geotextile. The geotextile is wrapped around the plastic blind drain main pipe 202 during construction to prevent soil from entering and causing blockages. The plastic blind drain main pipe 202, located at the bottom of the main sand bed 102, absorbs rainwater seeping down from the main sand bed 102. Branch plastic blind drains 201 are fixedly installed on the plastic blind drain main pipe 202. Branch plastic blind drains 201 are installed within the branch sand bed layer 104, and are located at the bottom of the branch sand bed layer 104 to collect rainwater. During installation, geotextile fabric is wrapped around the outer wall of the branch plastic blind drains 201 to prevent soil from entering. The spacing between the multiple branch plastic blind drains 201 is three meters. The branch plastic blind drains 201 collect rainwater seeping down from the branch sand bed layer 104. The laying direction of the branch plastic blind drains 201 is perpendicular to the main plastic blind drain 202. The multiple branch plastic blind drains 201 form a fishbone structure with the main pipe to collect rainwater seeping down from the planting soil layer 103. Both the branch plastic blind drains 201 and the main plastic blind drain 202 have seepage holes on their walls to facilitate rainwater collection. One end of the main pipe connects to the municipal underground drainage pipeline. When rainwater seeps into the planting soil layer 103 and the branch sand bed layer 104, the permeability of the branch sand bed layer 104 is lower than that of the planting soil layer 103. The soil layer 103 is higher, so some of the water will collect in the branch sand bed layer 104. Then, this rainwater will seep into the branch plastic blind drains 201. After that, multiple branch plastic blind drains 201 will collect rainwater from multiple locations into the main road. Finally, the rainwater will flow into the municipal drainage pipes. In addition, it should be noted that the fishbone-shaped pipe network formed by multiple branch plastic blind drains 201 and the main road can be flexibly adjusted in terms of direction and density of branch plastic blind drains 201 according to the specific terrain (slope, undulation) to adapt to the drainage needs of different terrains.
[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.
Claims
1. A lawn drainage structure, comprising a foundation soil layer (101), a planting soil layer (103) laid on the foundation soil layer (101), and turf (105) laid on the planting soil layer (103), characterized in that: Multiple branch sand bed layers (104) are provided between the planting soil layers (103). The multiple branch sand bed layers (104) are evenly distributed on the planting soil layers (103) and are arranged in parallel within the planting soil layers (103). A main sand bed layer (102) is also provided on the foundation soil layer (101). The main sand bed layer (102) is located at the bottom of the planting soil layer (103) and is perpendicular to the installation direction of the branch sand bed layers (104).
2. The lawn drainage structure according to claim 1, characterized in that: The branch sand bed (104) is composed of graded sand to filter rainwater, and the main sand bed (102) is composed of graded sand. The main sand bed (102) has the same function as the branch sand bed (104). The spacing between each branch sand bed (104) in the planting soil layer (103) is three meters. The main sand bed (102) and the branch sand bed (104) are connected to facilitate the flow of rainwater.
3. The lawn drainage structure according to claim 1, characterized in that: The main sand bed (102) is provided with a main pipeline. The main pipeline is laid at the bottom of the main sand bed (102). The main pipeline includes a plastic blind drain main pipe (202) and geotextile. The geotextile is wrapped around the plastic blind drain main pipe (202) when the main pipeline is laid to prevent soil from entering the main pipeline and causing blockage.
4. The lawn drainage structure according to claim 3, characterized in that: A branch plastic blind drain (201) is fixedly installed on the main plastic blind drain (202). The branch plastic blind drain (201) is set in the branch sand bed layer (104). The branch plastic blind drain (201) is used to collect rainwater that seeps down from the branch sand bed layer (104). The laying direction of the branch plastic blind drain (201) is perpendicular to the main plastic blind drain (202).
5. The lawn drainage structure according to claim 4, characterized in that: The multiple branch plastic blind drains (201) form a fishbone structure with the main road to collect rainwater that seeps down from the planting soil layer (103).