CN206289491U - A kind of pavement, greenery patches harvest water system - Google Patents

Abstract

The utility model provides a water collection and storage system for sidewalks and green spaces, which consists of sidewalks, permeable pipes and green spaces. The sidewalks are roads paved with permeable bricks, and the permeable pipes are embedded in the road cushion. Leveling layer, brick layer. The green space is composed of a planting base, a coarse sand filter layer, and a crushed pebble layer. The planting base is artificial soil, and a non-woven geotextile is arranged between the crushed pebble filter layer and the coarse sand filter layer. The garden wall is built on the upper layer to be higher than the surface layer of the green space. The utility model is suitable for the roof of the ground or underground space, and can filter water, store water and collect water while increasing the green area. The planting substrate of the green space is light and water-retaining, which can effectively filter harmful substances in the rainwater. In the dry and rainy season, the plants do not lack water. In the heavy rainfall season, the rainwater can be filtered layer by layer, collected to the permeable pipe along the slope, and collected to the municipal Water collection pipes to promote water recycling.

Description

Water collection and storage system for sidewalks and green spaces

technical field

The utility model belongs to the field of urban construction and design, and specifically provides a sidewalk and green land water collection and storage system.

Background technique

my country is a country with drought and water shortage, but it is also the country with the largest water consumption in the world. In recent years, the tension of urban water resources has become increasingly significant, but many cities with sufficient rainfall cannot drain water in time to prevent flooding. In the summer of 2015, Hubei, Jiangsu, Anhui, Jiangxi, Zhejiang, Guizhou, Guangxi and other places were hit by "storms", tens of millions of people in 20 provinces (autonomous regions and municipalities) across the country were affected, a large number of crops were damaged, and the rainstorms and floods directly caused us Tens of billions of dollars of economic losses have been incurred, and the urgency of building a sponge city has become imminent. Sponge city is a new generation of urban stormwater management concept, which means that the city has good "elasticity" in adapting to environmental changes and responding to natural disasters caused by rainwater. When it rains, water absorption, water storage, water seepage, and water purification require When the stored water is "released" and utilized, it can effectively protect the ecological environment and effectively alleviate the contradiction between my country's water shortage and rainy season floods. To build a "sponge city", measures should be taken according to local conditions and in line with its own characteristics. It is an idea to build a sponge city by increasing the construction of green spaces in cities, enhancing the water storage capacity of green spaces and timely drainage. In addition to increasing greening on the ground surface, appropriate greening design can be carried out on the roof of urban shallow underground projects such as commercial and entertainment types.

Utility model content

Aiming at the problems existing in the prior art, the utility model aims to provide a sidewalk as a permeable road, and the green space is designed as water storage and water retention, which can effectively alleviate the waterlogging of heavy rainstorms and heavy rainstorms, and make full use of the green space and sidewalks to collect and discharge rainwater. system. The utility model is suitable for the roof of the ground or underground space, and can filter water, store water and collect water while increasing the green area.

The technical scheme adopted by the utility model is: a sidewalk and green space water collection and storage system, which consists of sidewalks, permeable pipes, green spaces and garden walls, permeable pipes are arranged under the sidewalk, and the green spaces are distributed on both sides of the sidewalk;

The sidewalk is a permeable sidewalk, the surface of the sidewalk is a permeable brick layer, and the lower part of the permeable brick layer is a permeable leveling layer, a permeable cement stabilized gravel base, and a graded gravel cushion; the graded gravel cushion is laid on the roof or On the ground, and the sidewalk surface is 500-600mm away from the roof or the ground;

The bottom layer of the green land is a crushed pebble filter layer laid on the roof or the ground, and the crushed pebble filter layer is laid with a coarse sand filter layer and a planting base in sequence; the surface of the planting base is higher than the surface of the permeable brick layer, and the height difference is 300 -600mm; At the junction of the sidewalk and the green space, a garden wall is set on the graded gravel cushion to the point where the height difference is 100mm higher, and a garden wall is also set on the edge of the green space from the ground or on the roof. The setting of the garden wall can make The water in the upper part flows downwards, avoiding the lateral flow of water.

The permeable pipe is a plastic blind ditch permeable pipe, which is laid along the sidewalk in the center of the graded gravel cushion, the height of the graded gravel cushion is 200-300mm, the inner diameter of the permeable pipe is 100-140mm, and a permeable pipe is arranged under the permeable pipe pipe socket.

The thickness of the crushed pebble filter layer is 300-400mm, and the particle size is 50mm±5mm; the thickness of the coarse sand filter layer is 200-300mm, and the particle size is 4mm±1mm.

A non-woven geotextile is arranged between the crushed pebble filter layer and the coarse sand filter layer.

The roof or the ground is set so that there is a certain slope from the edge of the area to the center, the center is lower, and the edge of the area is higher, with a slope of 1%-3%, so as to ensure that water gathers to the center and is collected through permeable pipes.

The greenfield crushed pebble filter layer is connected with the graded crushed stone cushion layer.

The height difference between the surface of the garden wall and the surface of the green space is 100mm.

The planting base is a kind of artificial soil, and the compound mass ratio is red loam: vermiculite: perlite: humus soil = 5:1:1:3, and the thickness of the planting substrate should be determined according to the type of vegetation.

Compared with the prior art, the beneficial effects of the utility model are: when the utility model is used on the ground or the roof of the underground space, it can increase the area of the green space, and at the same time can filter and store water; the planting matrix of the green space is light in water retention, It can effectively filter harmful substances in the rainwater. In the dry and rainy season, the plants do not lack water. In the heavy rainfall season, the rainwater can be filtered layer by layer, collected into the permeable pipe along the slope, and collected into the municipal water collection pipe to promote water recycling. use. When the utility model is used on the ground, it can also make rainwater infiltrate into the ground to replenish groundwater, and can also collect a part of water through the permeable pipe at the same time, so that the rainstorm and continuous rainfall weather can quickly infiltrate and drain water, and avoid road accumulation.

The planting matrix layer of the green space is made of vermiculite and perlite with good water storage and water holding capacity, combined with ordinary red loam and humus soil, which can effectively absorb and store filtered rainwater; at the same time, the storage and drainage layer under the shallow green can effectively regulate and store Rainwater; the water holding time of 200mm thick planting substrate is 4-5 days, which is 2 times that of typical red soil. The green land purifies the pollutants COD, NH3-N, TN, and TP in the rainwater, and the removal rates are between 54.5%-60.3%, 46.3%-69.3%, 48.5%-61.0% and 46.3%-54.0%. It is mainly reflected in the planting substrate layer; the system retains water in drought, stores water in moderate and light rain, and collects and drains water in heavy rainstorms, and water storage and water collection are carried out at the same time or water storage, water seepage and water collection are carried out at the same time. Rainwater infiltrates, stagnates, and Purification and reuse, and the final remaining part of the runoff is collected through the pipe network or discharged through the pumping station, effectively improving the standard of the urban storage and drainage system, alleviating the pressure of urban waterlogging, and protecting the urban ecological environment.

Description of drawings

Below in conjunction with accompanying drawing, sidewalk in the utility model, green land water collection and storage system are further described:

Fig. 1 is the sidewalk of the utility model, the plan view of water collection and storage system of green space;

Fig. 2 is the A-A sectional view in Fig. 1, and the runoff situation shown in the figure is the situation that this system is arranged on the roof of the underground space;

Fig. 3 is the utility model sidewalk structure schematic diagram;

Fig. 4 is the utility model green space sectional schematic diagram;

Figure 5 is a schematic diagram of the rainwater runoff built on the surface of the system, and the structure in the figure is the same as that in Figure 2;

In the figure: 1 is the green space; 2 is the sidewalk; 1-1 is the crushed pebble filter layer; 1-2 is the coarse sand filter layer; 1-3 is the planting substrate; 1-4 is the garden wall; 1-5 is the non-woven geotechnical 2-1 is graded gravel cushion; 2-2 is permeable cement stabilized gravel base; 2-3 is permeable leveling layer; 2-4 is permeable brick layer; 3 is plastic blind ditch permeable pipe; 4 is Permeable pipe socket.

detailed description

In order to further illustrate the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings, but they should not be understood as limiting the protection scope of the utility model.

A water collection and storage system for sidewalks and green spaces, as shown in Figures 1 to 2, is mainly the plane and section of the three components of green space 1, sidewalk 2 and permeable pipe 3, and the section shows the runoff process of rainwater.

A water collection and storage system for sidewalks and green spaces, comprising sidewalks 2, permeable pipes 3, green spaces 1 and garden walls 1-4, water permeable pipes are arranged under the sidewalk 2, and the green spaces 1 are distributed on both sides of the sidewalk 2;

The sidewalk 2 is a permeable sidewalk, the surface of the sidewalk 2 is a permeable brick layer 2-4, and the lower part of the permeable brick layer 2-4 is a permeable leveling layer 2-3, a permeable cement stabilized gravel base 2-2, and a graded gravel pad Layer 2-1; the graded crushed stone cushion layer 2-1 is laid on the roof or the ground, and the surface surface of the sidewalk 2 is 500-600mm away from the roof or the ground; see Figure 3 for the road section of the sidewalk.

Its bottom layer of the said green space 1 is a crushed pebble filter layer 1-1 laid on the roof or the ground, as shown in Figure 4, the crushed pebble filter layer 1-1 is successively laid with a coarse sand filter layer 1-2, planting base 1-1 3. The height difference between the surface of the planting base 1-3 and the surface of the permeable brick layer 2-4 is about 300-600 mm; a garden wall is set on the self-graded gravel cushion 2-1 at the junction of the sidewalk 2 and the green space 1 1-4 is 100mm higher than the height difference, and the edge of the green space 1 is also provided with a garden wall 1-4 from the ground or the top plate, as shown in FIG. 2 .

The permeable pipe is a plastic blind ditch permeable pipe 3, which is laid along the sidewalk 2 in the center of the graded gravel cushion 2-1, the height of the graded gravel cushion 2-1 is 200-300mm, and the inner diameter of the permeable pipe is 100-140mm , the permeable pipe seat 4 is provided under the permeable pipe.

The crushed pebble filter layer 1-1 has a thickness of 300-400mm and a particle size of 50mm±5mm; the coarse sand filter layer 1-2 has a thickness of 200-300mm and a particle size of 4mm±1mm.

A non-woven geotextile 1-5 is arranged between the crushed pebble filter layer 1-1 and the coarse sand filter layer 1-2, as shown in Figure 4

The roof or the ground is set so that there is a certain slope from the edge of the area to the center, and the slope is 1%-3%.

The crushed pebble filter layer 1-1 of the green land 1 is connected with the graded crushed stone cushion layer 2-1.

The height difference between the upper surface of the garden wall 1-4 and the surface of the green space 1 is 100mm.

The planting base 1-3 is a kind of artificial soil, and the compound mass ratio is red loam: vermiculite: perlite: humus soil = 5:1:1:3, and the thickness of the planting substrate should be determined according to the type of vegetation.

As shown in Figure 2 and Figure 5, it can be seen that the water flow direction of the system when it is applied. The planting substrate of the green space is light and water-retaining, which can effectively filter harmful substances in the rainwater. In the dry and rainy season, the plants are not short of water. , Rainwater can be filtered layer by layer, collected into permeable pipes along the slope, and collected into municipal water collection pipes to promote water recycling. When the utility model is used on the ground, it can also make rainwater infiltrate into the ground to replenish groundwater, and can also collect a part of water through the permeable pipe at the same time, so that the rainstorm and continuous rainfall weather can quickly infiltrate and drain water, and avoid road accumulation.

The above description is a preferred embodiment of the present utility model, and it should be pointed out that for ordinary persons in the art, some improvements and modifications can be made without departing from the principles of the present utility model, and these improvements and modifications should also be made. It is regarded as the protection scope of the present utility model.

Claims (6)

1. A water collection and storage system for sidewalks and green spaces, characterized in that: its composition includes sidewalks, permeable pipes and green spaces, permeable pipes are set under the sidewalk, and the green spaces are distributed on both sides of the sidewalk; The sidewalk is a permeable sidewalk, the surface of the sidewalk is a permeable brick layer, and the lower part of the permeable brick layer is a permeable leveling layer, a permeable cement stabilized gravel base, and a graded gravel cushion; the graded gravel cushion is laid on the roof or On the ground, and the sidewalk surface is 500-600mm away from the roof or the ground; The bottom layer of the green land is a crushed pebble filter layer laid on the roof or the ground, and the crushed pebble filter layer is laid with a coarse sand filter layer and a planting base in sequence; the surface of the planting base is higher than the surface of the permeable brick layer, and the height difference is 300 -600mm; at the overlap between the sidewalk and the green space, a garden wall is set on the graded crushed stone cushion to be higher than the surface of the green space; The permeable pipe is a plastic blind ditch permeable pipe, which is laid along the sidewalk in the center of the graded gravel cushion, the height of the graded gravel cushion is 200-300mm, the inner diameter of the permeable pipe is 100-140mm, and a permeable pipe is arranged under the permeable pipe pipe socket. 2. The water collection and storage system for sidewalks and green areas according to claim 1, characterized in that: the thickness of the crushed pebble filter layer is 300-400mm, and the particle size is 50mm±5mm; the thickness of the coarse sand filter layer is 200-300mm , the particle size is 4mm±1mm. 3. The water collection and storage system for sidewalks and green areas according to claim 1, wherein a non-woven geotextile is arranged between the crushed pebble filter layer and the coarse sand filter layer. 4. The water collection and storage system for sidewalks and green areas according to claim 1, characterized in that: the roof or the ground is set so that there is a certain slope from the edge of the area to the center, and the center is lower, with a slope of 1%-3%. 5. The water collection and storage system for sidewalks and green lands according to claim 1, characterized in that: the crushed pebble filter layer of the green lands is connected with the graded crushed stone cushion. 6. The water collection and storage system for sidewalks and green areas according to claim 1, characterized in that: the height difference between the surface of the garden wall and the surface of the green area is 100mm.