CN109267445B - Sponge urban ecological road rainwater regulation and storage system - Google Patents

Abstract

The invention discloses a rainwater regulation and storage system for a sponge city ecological road. Asphalt pavement, non-motor vehicle permeable concrete pavement and motor vehicle permeable concrete pavement; the comprehensive pipe gallery is buried under the pedestrian permeable asphalt pavement; the sidewalk green isolation belt infiltration system is located between the pedestrian permeable asphalt pavement and the non-motor vehicle permeable concrete pavement; The non-motor vehicle lane isolation belt regulation and storage system is located between the non-motor vehicle permeable concrete pavement and the motor vehicle permeable concrete pavement; the other side of the motor vehicle permeable concrete pavement is provided with a central isolation belt regulation and storage system. The invention can realize rapid drainage of urban main roads, effectively absorb rainwater in heavy rainy weather, store and utilize it, realize automatic spraying of urban greening, supplement groundwater, and alleviate outstanding problems such as water shortage.

Description

A Sponge City Ecological Road Rainwater Storage System

technical field

The invention relates to a rainwater regulation and storage system, in particular to a rainwater regulation and storage system for a sponge city ecological road.

Background technique

With the development of the national economy and the continuous improvement of the awareness of ecological protection, the voice of sponge city design and construction is getting louder and louder, and the requirements for the collection and recycling of rainwater are constantly raised. In urban planning and construction, urban roads account for most of the urban area. Therefore, realizing the rainwater storage function of urban roads is of great significance to the realization of water storage, water transfer and water purification in sponge cities.

At this stage, the design of roads in large, medium and small cities in my country usually adopts a sloped form of drainage from the middle to both sides. Drainage wells are set up at a certain distance on both sides of the motor vehicle lane and under the tartar on the sidewalk. The drainage wells pass through the sewers and discharge together with urban sewage. in the sewage treatment plant. This type of road design is insufficient for the instantaneous road drainage capacity. Therefore, when the rainstorm season comes, due to the small number of drainage outlets, insufficient diameter of infiltration pipes, and garbage accumulation and silting up the drainage outlets, it is very easy to see the phenomenon of the city looking at the sea. In addition, the green space of urban roads is insufficient, and the separation space of motor vehicle lanes, non-motor vehicle lanes and sidewalks is insufficient, and the pollution of motor vehicle lanes is easy to spread to the sidewalks on both sides. At the same time, the current road design cannot realize the storage and transfer of rainwater. After the rainwater falls, it flows into the drainage pipeline and is directly discharged into the urban sewage system. In the dry season, the plants on the green isolation belt need to be artificially sprayed, and the city tap water is used as the water for irrigation. It is difficult to use the stored rainwater for automatic spraying, resulting in a waste of manpower and water resources.

SUMMARY OF THE INVENTION

Purpose of the invention: The purpose of the present invention is to provide a rainwater storage system for ecological roads in a sponge city, which can realize rapid infiltration of rainwater in heavy rainy weather, avoid rainwater accumulation and retention, and can store rainwater in underground pre-buried pipes, so that the surrounding areas can be stored in dry conditions. The greening of the isolation belt calls the stored rainwater for automatic spraying.

Technical scheme: The present invention includes pavement, comprehensive pipe gallery, sidewalk greening isolation belt infiltration system, non-motor vehicle lane isolation belt regulation and storage system and central isolation belt regulation and storage system; the road surface includes pedestrian permeable asphalt pavement, non-motor vehicle permeable Concrete pavement and motor vehicle permeable concrete pavement; the comprehensive pipe gallery is buried under the pedestrian permeable asphalt pavement; the sidewalk green isolation belt infiltration system is located between the pedestrian permeable asphalt pavement and the non-motor vehicle permeable concrete pavement; all The said non-motor vehicle lane isolation belt regulation and storage system is located between the non-motor vehicle permeable concrete pavement and the motor vehicle permeable concrete pavement; the other side of the motor vehicle permeable concrete pavement is provided with a central isolation belt regulation and storage system.

The infiltration system of the sidewalk greening isolation belt is a symmetrical structure, and curb stones are respectively arranged on both sides of the top, and several layers of first filter screens are connected between the curb stones, and a concrete enclosure is arranged at the bottom; A first rainwater grate is connected between the baffles, and the bottom is provided with a geotextile and a lattice support; the bottom of the lattice support is provided with a first water storage tank, and the side walls of the first water storage tank are provided with a number of first pressure pumps and spray systems at intervals .

The curb stone adopts a trapezoidal structure, and the upper surface of the curb stone is flush with the pedestrian permeable asphalt pavement.

The said non-motor vehicle lane isolation belt regulation and storage system has a symmetrical structure, with second water storage tanks on both sides, a second rainwater grate on the top of the second water storage tank, and a number of second pressure pumps between the second water storage tanks. with sprinkler system.

The upper surface of the second water storage tank is respectively flush with the non-motor vehicle permeable concrete road surface and the motor vehicle permeable concrete road surface.

The central isolation belt regulation and storage system is a symmetrical structure, with third water storage tanks on both sides, and a sunken green space in the middle; the top of the third water storage tank is connected with an inclined second plant tank, and the side walls are There are several third pressure pumps and spray systems.

The upper surface of the sunken green space is lower than the motor vehicle permeable concrete pavement.

The pavement adopts a structure of slope from both sides to the middle, the slope ratio is 1%-3%, and the accumulated water is diverted and merged into the infiltration system.

Beneficial effects: the present invention can realize rapid drainage of urban trunk roads, effectively absorb rainwater in rainy weather, control rainwater runoff paths, and solve many problems such as current urban waterlogging disasters and rainwater runoff pollution; it can absorb a large amount of precipitation, store and utilize it, and realize The automatic spraying of urban greening can supplement groundwater and alleviate outstanding problems such as water shortage; it can expand and fully utilize the green space of roads, realize the separation of people and vehicles, and improve the safety and comfort of urban arterial roads.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the schematic diagram of the infiltration system of the sidewalk greening isolation belt of the present invention;

Fig. 3 is the schematic diagram of the non-motor vehicle lane isolation belt regulation and storage system of the present invention;

FIG. 4 is a schematic diagram of the central isolation belt regulation and storage system of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 4 , the present invention includes a road surface 1 , a comprehensive pipe gallery 2 , a sidewalk greening isolation belt infiltration system 3 , a non-motor vehicle lane isolation belt regulation and storage system 4 and a central insulation belt regulation and storage system 5 . Pavement 1 includes pedestrian permeable asphalt pavement 11 , non-motor vehicle permeable concrete pavement and motor vehicle permeable concrete pavement 12 . Pavement 1 is the basis for the operation of the entire system. According to the requirements of bearing capacity and durability, pedestrian permeable asphalt pavement 11 is used on pedestrian paths, and permeable concrete pavement is used on non-motor vehicle and motor vehicle lanes. Pavement 1 is required to be made into a structure that slopes from both sides to the middle of the road, and the gradient ratio is controlled at 1%-3%, and the accumulated water is diverted and merged into the infiltration system. The comprehensive pipe gallery 2 is buried under the pedestrian permeable asphalt pavement 11; the sidewalk green isolation belt infiltration system 3 is located between the pedestrian permeable asphalt pavement 11 and the non-motor vehicle permeable concrete pavement; Between the motor vehicle permeable concrete pavement and the motor vehicle permeable concrete pavement 12 ; the other side of the motor vehicle permeable concrete pavement 12 is provided with a central isolation belt regulating and storage system 5 .

The integrated pipe gallery 2 is embedded under the pedestrian permeable asphalt pavement 11, and its shape is a right-angled trapezoid with a certain slope at the top, which is convenient for the diversion of rainwater infiltrating through the pedestrian permeable asphalt pavement 11 into the infiltration system 3 of the sidewalk green isolation belt.

The sidewalk greening isolation belt infiltration system 3 can manage and control the inflowing rainwater on the slope of the pedestrian pavement, the rainwater collected on the isolation belt, and the rainwater infiltrating underground. The first rainwater grate 33 , the concrete enclosure 34 , the first plant groove 35 , the geotextile 36 , the lattice support 37 , the first water storage tank 38 , the first pressure pump and the spray system 39 . The top of the curb stone 31 can be provided with a handrail to vertically isolate the sidewalk and the non-motorized vehicle lane. The curb 31 is a precast concrete block with a right-angled trapezoid structure, the top elevation is the same as that of the pedestrian permeable asphalt pavement 11, two gaps are reserved on the hypotenuse, and two collars are set at intervals up and down the gap. The first filter screen 32 is used for filtering leaves and sundries mixed with inflowing rainwater. The first filter screen 32 is made of 316L stainless steel perforated screen, and is provided with upper and lower layers. The edge of the first filter screen 32 is inserted into the notch reserved by the curb stone 31 , and a T-shaped pin is inserted into the collar to fix the first filter screen 32 .

The infiltration system 3 of the sidewalk green isolation belt needs to excavate the road downward, and the concrete enclosure 34 is used for support after excavation. A first rainwater grate 33 is arranged between the concrete enclosures 34 to guide the rainwater passing through the first filter screen 32 and enter the first water storage tank 38 . In order to divert and absorb the rainwater absorbed by the surrounding soil, a geotextile 36 and a lattice support 37 are arranged below the concrete enclosure 34. The geotextile 36 is made of 400g geotextile, and two layers are cross-stacked according to the weaving direction and placed in the lattice. Support 37 outside. In order to accelerate the infiltration rate of rainwater, the geotextile 36 and the lattice support 37 are placed obliquely, and the self-weight pressure of the soil is used to facilitate the inflow of rainwater. Below the lattice support 37 is a first water storage tank 38 for storing rainwater. According to the requirements of urban greening, first plant troughs 35 are arranged at intervals outside the entire system, and the size thereof is determined according to the growth requirements of forest trees. The bottom of the first plant tank 35 is provided with a first pressure pump and a spray system 39, the first pressure pump and the spray system 39 communicate with the first water storage tank 38, and a rectangular hole is opened on the side of the first water storage tank 38, A filter screen is set at the rectangular hole for filtering, the first pressure pump and spray system 39 and corresponding purification equipment and pipelines are set up, and the rainwater in the water storage tank can be called for spray irrigation or fire fighting through timer or remote control settings.

The non-motor vehicle lane isolation belt regulation and storage system 4 mainly adjusts and stores the rainwater entering the non-motor vehicle lane slope, and uses the overlying vegetation and greenery to isolate the non-motor vehicle lane and the motor vehicle lane. The non-motor vehicle lane isolation belt regulation and storage system 4 adopts a symmetrical structure, including a second rainwater grate 41 , a second water storage tank 42 , a second filter screen 43 , a second pressure pump and a spray system 44 . Through pre-excavation, the second water storage tanks 42 on both sides are provided, the top of the second water storage tank 42 is provided with a second rainwater grate 41, and filter meshes with different knitting densities are arranged to cover the second rainwater grate 41 depending on the plant species of the green belt. A second pressure pump and a spray system 44 are arranged according to the requirements of the greening interval. The inner side of the second water storage tank 42 is opened. The masonry enclosure is connected to the long water storage tank at the bottom of the green belt. The upper opening covers the second filter screen 43. rainwater is filtered again. The second pressure pump and the sprinkler system 44 are arranged between the full-length water storage tank, and the rainwater in the water storage tank can be called for sprinkler irrigation or fire fighting through a timer or remote control setting.

The central isolation belt regulation and storage system 5 is the largest regulation and storage structure in the whole system. It adopts a symmetrical structure, including a walkway trestle 51, a sunken green space 52, a third rainwater grate 53, a second plant tank 54, a third water storage tank 55, a third Three pressure pump and spray system 56 . The sunken green space 52 and the third water storage tank 55 are used to store and regulate rainwater. After excavation on both sides of the central isolation belt, a third water storage tank 55 is set up, and the land reserved in the middle is leveled and greened, and the top elevation is about 0.5m lower than the road surface elevation of the motor vehicle lane, forming a sunken green space 52, and pedestrians are arranged above the green space. Passed trail trestle 51. An oblique second plant tank 54 is arranged above the third water storage tank 55. The inner side of the second plant tank 54 is a geotextile, and the outside is a lattice support. The excess water in the soil of the second plant tank 54 can directly infiltrate into the lower The third water storage tank 55 . A third rainwater grate 53 is arranged between the third water storage tank 55 and the sunken green space 52 , and a filter wire mesh is arranged on the third rainwater grate 53 to filter the inflowing rainwater. According to the capability range of the spraying system, the third pressure pump and the spraying system 56 are arranged at certain intervals to spray the vegetation in the second plant tank 54 and the sunken green space 52 .

In the specific implementation, the concrete strength of enclosures and other structures depends on the engineering conditions of the project site. Structural components can be connected in the form of cast-in-place concrete at the joints. The size and depth of the water storage tank and the width of the central isolation belt It all depends on the maximum rainfall in the city where you are located, and the varieties of turf, shrubs and trees planted on the green belt all depend on the local ecological conditions.

The specific implementation steps are:

1. The land is trimmed, and the entire road is made into a structure with slopes from both sides to the middle in advance, and the slope ratio is controlled at 1%-3%. The burying method of the regulation and storage system is also arranged from both sides to the middle. First, excavate the integrated pipe gallery 2 on both sides and the infiltration system 3 of the sidewalk greening isolation belt, put the prefabricated integrated pipe gallery pipeline into the excavated channel, cover with soil and compact it; place the first water storage tank 38, according to the greening It is required to set the first plant tank 35 above the first water storage tank 38, place the first pressure pump and the spray system 39 according to the position of the first plant tank 35, and then build the geotextile 36 and the lattice support 37, in order to enhance its resistance In order to increase the pressure capacity, the lattice supports 37 can be provided with transverse connection supports at appropriate positions. Place the concrete enclosure 34 and the first rain grate 33, and at the same time, the construction of the pedestrian permeable asphalt pavement 11 can be carried out. After the pavement construction is completed, place the trapezoidal curb 31 to ensure that the top of the curb 31 is flush with the pedestrian permeable asphalt pavement 11, and finally insert The first filter screen 32 is fixed.

2. Excavate the non-motor vehicle lane isolation belt regulation and storage system 4, and place the second water storage tank 42. The second water storage tank 42 can be prefabricated in the factory in sections. 42 poured together. The second water storage tank 42 reserves the position of the filter port where the second filter screen 43 is located. According to the arrangement of plants in the plant tank, a second pressure pump and a spray system 44 are installed, and finally the second rainwater grate 41 is covered. After the construction of the non-motor vehicle lane isolation belt regulation and storage system 4 is completed, the non-motor vehicle lane permeable concrete pavement 13 can be constructed to ensure that the road surface elevation is flush with the second rainwater grate 41 .

3. Excavate the central isolation belt regulation and storage system 5, place the third water storage tanks 55 on both sides, and trim the middle green space to form a sunken green space 52, maintaining a height difference of 0.5-0.8m with the height of the top of the motorway. The water storage tank 55 can be prefabricated in sections in advance and poured together with the second plant tank 54 above, and vertical supports can be provided according to specific bearing capacity requirements. The third pressure pump and sprinkler system 56 are placed at specific locations according to plant sprinkling requirements. A walkway trestle 51 is set above the middle sunken green space 52 .

When the actual rainstorm weather comes, the rainwater can quickly seep into the soil under the road through the asphalt and concrete permeable pavement. The retained rainwater can be fed into various storage systems following the slope of the road. After filtering by the filter screens and rainwater grate of each system, the urban irrigation and fire fighting water can be obtained and stored in the corresponding water storage tanks. When the water storage tanks on both sides of the middle sunken green space are full, the sunken green space can be covered, and the trail trestle bridge is temporarily closed. When the entire regulation and storage system exceeds the storage capacity, floods can be released to lakes and rivers through connecting urban pipelines. When the urban greening needs to be irrigated, the greening along the road can be sprinkled through the remote control terminal.

Claims (7)

1. A sponge city ecological road rainwater storage system is characterized in that, comprising road surface (1), comprehensive pipe gallery (2), sidewalk greening isolation belt infiltration system (3), non-motor vehicle lane isolation belt adjustment and storage system ( 4) and a central isolation belt regulation and storage system (5); the road surface (1) includes a pedestrian permeable asphalt pavement (11), a non-motor vehicle permeable concrete pavement and a motor vehicle permeable concrete pavement (12); the comprehensive pipe The corridor (2) is buried under the pedestrian permeable asphalt pavement (11); the said sidewalk greening isolation belt infiltration system (3) is located between the pedestrian permeable asphalt pavement (11) and the non-motor vehicle permeable concrete pavement; the said The non-motor vehicle lane isolation belt regulation and storage system (4) is located between the non-motor vehicle permeable concrete pavement and the motor vehicle permeable concrete pavement (12); the other side of the motor vehicle permeable concrete pavement (12) is provided with a central isolation belt adjustment The storage system (5), the infiltration system (3) of the sidewalk greening isolation belt is a symmetrical structure, and curb stones (31) are respectively provided on both sides of the top, and several curb stones (31) are connected between them. The first filter screen (32) of the layer is provided with a concrete enclosure (34) at the bottom; a first rainwater grate (33) is connected between the concrete enclosures (34), and the bottom is provided with a geotextile (36) and a lattice support ( 37); the bottom of the lattice support (37) is provided with a first water storage tank (38), and the side walls of the first water storage tank (38) are provided with a number of first pressure pumps and spray systems (39) at intervals. 2. The rainwater storage system for a sponge city ecological road according to claim 1, wherein the curb stone (31) adopts a trapezoidal structure, and the upper surface of the curb stone (31) is in contact with the pedestrian permeable asphalt pavement ( 11) Flush. 3. The rainwater regulation and storage system for a sponge city ecological road according to claim 1, wherein the non-motor vehicle lane isolation belt regulation and storage system (4) is a symmetrical structure, and the two sides are respectively provided with a second storage system. A water tank (42), a second rainwater grate (41) is arranged on the top of the second water storage tank (42), and a plurality of second pressure pumps and a spray system (44) are arranged between the second water storage tanks (42). 4. The rainwater storage system for a sponge city ecological road according to claim 3, wherein the upper surface of the second water storage tank (42) is respectively connected with the non-motor vehicle permeable concrete pavement and the motor vehicle permeable concrete pavement (12) FLUSH. 5. The rainwater regulation and storage system for a sponge city ecological road according to claim 1, wherein the central isolation belt regulation and storage system (5) is a symmetrical structure, and a third water storage tank is respectively provided on both sides thereof. (55), a sunken green space (52) is arranged in the middle; the top of the third water storage tank (55) is connected with an inclined second plant tank (54), and the side walls are provided with a number of third pressure pumps and spray systems (56). 6 . The rainwater storage system for a sponge city ecological road according to claim 5 , wherein the upper surface of the sunken green space ( 52 ) is lower than the motor vehicle permeable concrete pavement ( 12 ). 7 . 7. The rainwater storage system for a sponge city ecological road according to claim 1, wherein the road surface (1) adopts a structure that slopes down from both sides to the middle, and the gradient ratio is 1%-3 %.

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