CN206971036U - Lawn watering system for sponge city - Google Patents

Abstract

The utility model discloses a green space drainage system for a sponge city, which comprises a concave green space and a road surface, the green space is located in the middle of the road surface, a drainage channel is arranged in the middle of the green space, and a drainage cover with drainage holes is fixed on the drainage channel; The bottom of the green space includes a soil layer, a filter sand layer, a fine sand layer and a coarse sand layer in sequence from top to bottom; two water filter pipes are arranged obliquely inside the coarse sand layer, and the sides of the two water filter pipes are The walls are provided with filter holes; the bottom of the green space is provided with reservoirs on both sides, and the two reservoirs are respectively connected with the filter pipes; the side walls of the two reservoirs are provided with water inlet pipes and outlet pipes. The utility model can effectively gather the running water on the road when it rains and floods, and quickly drains the water underground, greatly reducing the water runoff of urban roads. While ensuring better drainage, filtering and seepage functions, it can also Collecting and storing water and using it for other needs of the city has brought many conveniences to urban construction and development.

Description

Green space drainage system for sponge city

technical field

The utility model belongs to the field of sponge cities, in particular to a green space drainage system for sponge cities.

Background technique

Sponge city is a new generation of urban stormwater management concept. It refers to the city's good "elasticity" in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called "water elastic city". The international general term is "low-impact development stormwater system construction". When it rains, it absorbs, stores, infiltrates, and purifies water, and when necessary, "releases" the stored water and utilizes it. Sponge city construction combines natural approaches with artificial measures. On the premise of ensuring the safety of urban drainage and waterlogging, it maximizes the accumulation, infiltration and purification of rainwater in urban areas, and promotes the utilization of rainwater resources and the protection of the ecological environment. In the sponge city, the water filtration structure is one of the most important structures. The penetration and filtration functions of rainwater have a great relationship with the water filtration structure. The water filtration structure directly affects the function of the sponge city.

At present, with the rapid development of urban construction, urban roads are gradually covered by various impermeable sites and concrete pavements with extremely poor water permeability, which often causes serious floods and large runoff in the city during the rainy season, which seriously affects the Safety and efficiency of public travel. The green belt is a very important part of urban traffic. It not only beautifies the environment, but also divides the traffic roads. However, the drainage and water storage function of the green belts in today's China is poor. When rain or floods come, it is easy to cause water and soil loss in the green belts. Blockage greatly affects the drainage capacity of the urban drainage system and has a huge impact on the urban green environment.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of this utility model is to propose a green space drainage system for the sponge city, which can effectively gather the running water on the road when it rains and floods, and quickly drain the water underground, greatly reducing the The water runoff of urban roads, while ensuring better drainage, filtration, and seepage functions, can also collect and store water and use it for various needs of the city, bringing many conveniences to urban construction and development.

In order to achieve the above-mentioned purpose, the technical scheme adopted in the utility model is:

The green space drainage system used in the sponge city includes a green space and a road surface, the green space is located in the middle of the road surface, and a drainage channel is arranged in the middle of the green space, and the green space slopes downward from both sides towards the drainage channel, and the drainage channel is movable and fixed There is a drainage cover with multiple drainage holes;

The bottom of the green space includes a soil layer, a filter sand layer, a fine sand layer and a coarse sand layer from top to bottom; the coarse sand layer is provided with two water filter pipes, and the two water filter pipes are inclined Arrangement, the side walls of the two water filter pipes are provided with water filter holes;

Both sides of the bottom of the green space are respectively provided with water storage tanks, and the outside of the water storage tanks are provided with supports, and the two storage tanks are respectively connected with the water filter pipes;

The side walls of the two reservoirs are equipped with water inlet pipes from the bottom of the road surface, and the bottom of the side walls of the reservoirs are equipped with outlet pipes; the water inlet pipes transport the water filtered by the road surface to the reservoirs, together with the water filtered by the green land. The water is collected in the cistern, and the water in the cistern is sent to the place where the water is used in the city through the outlet pipe.

Further, positioning grooves are provided on both sides of the top of the drain, and positioning protrusions corresponding to the positioning grooves are provided on the bottom of both sides of the drainage cover; Putting it into the positioning groove plays a positioning role, preventing the drainage cover from moving freely on the drainage channel, and affecting the drainage and water filtration function of the green space system.

Further, there are multiple drain holes arranged in an array on the drain cover; the intervals between each drain hole are equal, and while ensuring a good water drainage function, better filtration is also ensured through the same interval. water function.

Further, the inclination angle of the green space on both sides of the drainage ditch is 4°-8°; the flowing water in the green space converges into the drainage ditch through the inclined green space. If the inclination angle is too large, the flowing water will flow to The pressure in the drains is too high, which increases the pressure on the drainage system of the green area.

Further, the inclination angle of the two water filter pipes inside the coarse sandstone layer is 5°-10°; the water in the coarse sandstone layer enters the water filter pipe through the water filter holes on the side walls of the water filter pipes, and the water With the inclined filter pipe into the reservoir.

Further, the outer surface of the reservoir is wrapped with a geomembrane; the geomembrane has a strong anti-seepage function, and when water is stored inside the reservoir, it can reduce water seepage.

Furthermore, there is an isolation body between the bottom of the green space and the bottom of the road surface; the functions of the road surface and the green space are different, and the structures of the bottom of the road surface and the bottom of the green space are also different. The stability of the pavement and green space structure.

Further, the outlet pipe is connected to the urban water system; the water inside the reservoir can meet the needs of the city through the outlet pipe, can irrigate the green land, can be used for industrial production, and can also be used by people after treatment.

The utility model adopts the beneficial effects of the technical solution as follows:

(1) The green space drainage system proposed by the utility model can be used in the construction of sponge cities, and the green space is set in the middle of the road surface in a concave shape. When the rainwater is too heavy and the urban road path flow is large, the green space can gather most of the water. The drainage of urban roads has been greatly accelerated, water can be stored in the green space, and penetrate downward through the soil layer, filter sand layer, fine sand layer and coarse sand layer at the bottom of the green area; the setting of drainage channels has also increased The drainage of the green space slows down the pressure on the vegetation of the green space, ensures the good drainage capacity of the city, slows down the flood runoff of urban roads, and speeds up the drainage;

(2) While increasing the drainage capacity of the urban green space, the utility model can block various garbage through the green space vegetation itself and the drainage cover, preventing the garbage from following the water into the groundwater system, and ensuring the quality of the collected water ;Garbage is finally accumulated on the drainage cover, which is convenient for urban sanitation personnel to carry out centralized processing and collection;

(3) The utility model can collect and store water through the reservoir while realizing the functions of good drainage, filtration and water seepage in the green space. The water collected and stored in the reservoir can be used by the city in many ways, which is convenient It not only improves people's use, but also saves water resources, and has played a good environmental protection function.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic diagram of a drainage cover of the present utility model;

In the figure: 1. Green space; 2. Road surface; 3. Drainage channel; 4. Drainage cover; 4-1. Drainage hole; 4-2. Positioning protrusion; 5. Soil layer; 6. Sand layer for filtering water; 7. Fine sand layer; 8. Coarse sand layer; 9. Water filter pipe; 10. Reservoir; 11. Geomembrane; 12. Support body; 13. Water inlet pipe; 14. Water outlet pipe.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further elaborated below in conjunction with the accompanying drawings.

In this embodiment, as shown in Figure 1, the green space drainage system used in the sponge city includes a green space 1 and a road surface 2, the green space 1 is located in the middle of the road surface 2, and a drainage channel 3 is arranged in the middle of the green space 1. The green space 1 slopes downward from both sides towards the drain 3, and the drain 3 is movable and fixed with a drainage cover 4, and the drainage cover 4 is provided with a plurality of drainage holes 4-1; the bottom of the green space 1 is sequentially arranged from top to bottom It includes a soil layer 5, a filter sand layer 6, a fine sand layer 7 and a coarse sand layer 8; the coarse sand layer 8 is provided with two water filter pipes 9, and the two water filter pipes 9 are arranged obliquely. The side walls of the two water filter pipes 9 are provided with water filter holes; both sides of the bottom of the green space 1 are respectively provided with reservoirs 10, and the outside of the reservoir 10 is provided with a support body 12, and the two reservoirs 10 are respectively connected to the The water filter pipe 9 is connected; the side walls of the two reservoirs 10 are provided with water inlet pipes 13 from the bottom of the road surface 2 , and the bottom of the side walls of the reservoirs 10 are provided with outlet pipes 14 .

As an optimization scheme of the present utility model, positioning grooves are provided on both sides of the top of the drainage channel 3, and positioning protrusions 4-2 corresponding to the positioning grooves are provided on the bottom of the drainage cover 4; 4 is placed on the drainage channel 3, and the positioning protrusion 4-2 is placed in the positioning groove for positioning, so as to prevent the drainage cover 4 from moving freely on the drainage channel 3, thereby ensuring the drainage of the drainage cover 4 in the green space system Water filtration function.

As an optimization scheme of the present utility model, the drainage holes 4-1 are multiple and arranged in an array on the drainage cover 4; At the same time, it also ensures a better water filtration function through the same interval, and at the same time, the uniform array arrangement also has a certain aesthetic feeling.

As an optimization scheme of the present utility model, the inclination angle of the green space 1 on both sides of the drain 3 is 5°-10°; the flowing water in the green space 1 converges into the drainage channel 3 through the inclined green space 1, If it is too large, the pressure of the flowing water flowing into the drainage ditch 3 per unit time will be too high, which will increase the pressure of the green land drainage system.

As an optimization scheme of the present utility model, the inclination angle of the two water filter pipes 9 inside the coarse sandstone layer 8 is 5° to 10°; the water in the coarse sandstone layer 8 passes through The water filter hole enters the water filter pipe 9, and the water enters the reservoir 10 along with the inclined water filter pipe 9.

As an optimization scheme of the present utility model, the outer surface of the reservoir 10 is wrapped with a geomembrane 11; the geomembrane 11 has a strong anti-seepage function, and when water is stored in the reservoir 10, it can reduce the leakage of water. Extravasation.

As an optimization scheme of the present invention, the bottom of the green space 1 and the bottom of the road surface 2 are provided with an isolator; Separating the road surface 2 from the green space 1 ensures the stability of the structure of the road surface 2 and the green space 1 respectively, and is conducive to realizing various drainage and seepage functions respectively.

As an optimization scheme of the utility model, the outlet pipe 14 is connected with the urban water system; the water inside the reservoir 10 can meet the needs of the city through the outlet pipe 14, and can irrigate the green space 1, which can be used for industrial production , and can also be processed for human use.

When the utility model is actually implemented, when the city suffers from heavy rain or floods, the rainwater and flood can converge to the concave green space 1, which greatly reduces the runoff of rainwater on urban roads, and speeds up the water flow of the road. When inside the green space 1, it flows further into the drainage channel 3 through the inclined surface of the green space 1, while the water flows downward in the green space 1, it can pass through the soil layer 5, filter sand layer 6, fine sand layer 7 and coarse sand Layer 8 infiltrates downwards, and a large amount of water gathers in the drainage channel 3, which shares the pressure of urban drainage and water filtration. After the water passes through the drainage cover 4 to filter out garbage, it passes through the soil layer 5, the water filtration sand layer 6, fine sand and gravel Layer 7 and coarse gravel layer 8 infiltrate downwards, and the water that seeps into coarse gravel layer 8 at last enters in the drain pipe 9 through the drain hole on the side wall of the drain drain 9, and finally flows into the storage tank through the drain drain 9. Stored in the pool 10; the green space drainage system, while having a greater urban drainage function, can also realize rapid underground infiltration of water, and also has a better water filtration effect, greatly reducing the city's heavy rain and flood. The amount of runoff greatly reduces the pressure on urban traffic and facilitates people's travel.

The utility model finally stores the water in the reservoir 10, and the water infiltrated by the road surface 2 is also stored in the reservoir 10 through the water inlet pipe 13, and the water in the reservoir 10 flows out through the outlet pipe 14 for other purposes in the city. It can be used for irrigating green belts, water for industrial production, and water for urban households after treatment, which greatly saves water resources.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (8)

1. The green space drainage system for the sponge city, characterized in that: it comprises a concave green space (1) and a road surface (2), the green space (1) is located in the middle of the road surface (2), and the green space (1) is in the middle A drainage channel (3) is provided, and a drainage cover (4) is movable and fixed on the drainage channel (3), and a plurality of drainage holes (4-1) are arranged on the drainage cover (4); The bottom of the green space (1) includes a soil layer (5), a filter sand layer (6), a fine sandstone layer (7) and a coarse sandstone layer (8) from top to bottom; the coarse sandstone layer ( 8) There are two water filter pipes (9) arranged obliquely inside, and the side walls of the two water filter pipes (9) are provided with water filter holes; Both sides of the bottom of the green land (1) are respectively provided with reservoirs (10), and the exterior of the reservoirs (10) is provided with supports (12). ) connected; The side walls of the two water storage tanks (10) are all provided with water inlet pipes (13) from the bottom of the road surface (2), and the bottom of the side walls of the water storage tanks (10) are all provided with water outlet pipes (14). 2. The green land drainage system according to claim 1, characterized in that: both sides of the top of the drain (3) are provided with positioning grooves, and the bottom of both sides of the drainage cover (4) are provided with positioning grooves Corresponding positioning protrusions (4-2). 3. The green land drainage system according to claim 2, characterized in that: there are multiple drainage holes (4-1) arranged in an array on the drainage cover (4). 4. The green land drainage system according to claim 3, characterized in that: the inclination angle of the green land (1) on both sides of the drainage channel (3) is 4°-8°. 5. The green land drainage system according to claim 4, characterized in that: the inclination angle of the two filter pipes (9) inside the coarse sand layer (8) is 5°-10°. 6. The green land drainage system according to claim 5, characterized in that: the outer surface of the reservoir (10) is wrapped with a geomembrane (11). 7. The green land drainage system according to claim 6, characterized in that: an isolator is provided between the bottom of the green land (1) and the bottom of the road surface (2). 8. The green land drainage system according to claim 7, characterized in that: the outlet pipe (14) is connected to the urban water system.