CN106245487A - The urban road sponge engineering system of combining road maintenance and construction method thereof - Google Patents

Abstract

The invention discloses an urban road sponge engineering system combined with road surface maintenance, which belongs to the technical field of urban road drainage and rainwater utilization. The thickness of the permeable surface layer is 40-50mm, and the thickness of the permeable surface layer is 40-50mm. The outer edge of the permeable surface layer is close to the cover of the water-collecting side ditch. The above-mentioned non-motorized vehicle lanes and sidewalks are equipped with water-collecting side ditches at the flat teeth of the road. The side channel is connected to the municipal rainwater pipe through the overflow pipe; the invention also discloses the construction method of the system. The invention completes the maintenance and repair of the old urban road surface, effectively reduces the downstream drainage burden without changing the existing sewer system, avoids the pollution of the downstream water body by the initial rainwater pollution of the road surface, and has practicability.

Description

Urban road sponge engineering system combined with road surface maintenance and its construction method

technical field

The invention belongs to the technical field of urban road drainage and rainwater utilization, and in particular relates to an urban road sponge engineering system combined with road surface maintenance and a construction method thereof.

technical background

In recent years, road waterlogging caused by heavy rainfall has been a chronic disease that affects pedestrian travel and even endangers urban traffic safety. It is common in Chinese cities. On the one hand, traditional asphalt or cement pavement surface drainage can only be carried out through storm water outlets, which is time-consuming It is long and prone to air resistance, and poor drainage leads to water on the road, which will not only cause vehicle tires to slip and become a safety hazard, but in areas with more water, it will seriously cause vehicles to be soaked in water and be scrapped, and pollutants will overflow to cause environmental pollution; On the one hand, there is a large demand for urban road green irrigation, but the traditional drainage system is not connected with the road green irrigation system, and the rainfall and accumulated water cannot be well used for irrigation and greening, resulting in waste of resources. How to solve the dilemma of water accumulation on urban roads and water shortage in road green spaces has become an important issue facing the contemporary urban road environment.

Generally speaking, the design service life of urban roads with asphalt pavement is 10-15 years, and that of roads with cement concrete pavement is 15-30 years. After the service life is exceeded, cracks, potholes, and subsidence will occur. Not only will it seriously affect the image of the city and traffic safety, but it will also easily cause poor drainage of the road and form water on the road. However, due to the many professional pipelines under the road and the obstruction of traffic during the construction period, it is very difficult to improve the drainage of the old city roads, and the construction disturbs the residents, which seriously affects the urban life. It is of great significance to study how to transform the roads in the old city so that they can drain water quickly and effectively, collect rainwater on the road reasonably, and carry out road greening irrigation.

Contents of the invention

Purpose of the invention: The purpose of the present invention is to provide an urban road sponge engineering system combined with road surface maintenance, aiming at the old urban road sections with damaged road surface and small traffic flow, while solving road drainage, collecting rainwater on the spot to the side sub-zone 1. Store infiltration under the sidewalk to supplement irrigation water for road green spaces; another object of the present invention is to provide a construction method for the system.

Technical solution: In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solution:

Combined with the urban road sponge engineering system of road surface maintenance, urban roads include motor vehicle lanes, non-motor vehicle lanes and sidewalks. After removing the thickness of 20-40mm on the non-motor vehicle lane, pave the permeable surface layer again, the thickness of the permeable surface layer is 40-50mm, and there is permeable concrete under the permeable surface layer next to the water collection side ditch, the outer surface of the permeable surface layer The edge of the water-collecting side ditch cover is close to the water-collecting side ditch, and the water-collecting side ditch is set on the outer side of the motor vehicle lane along the road flat tooth and the road flat tooth between the non-motorized vehicle lane and the sidewalk, and the water-collecting side ditch is covered Water-collecting side ditch cover plate; dredging wells are set every five to six meters along the water-collecting side ditch. Each dredging well at Pingya is equipped with a circular seepage water storage tank for use, and the circular seepage water storage tank is buried between existing trees; Each dredging well is equipped with a square seepage water storage tank, which is buried between the existing trees on the sidewalk; They are respectively connected by oblique collection pipes, and a waste collection basket is provided at the mouth of the collection pipe at the junction with the water collection side ditch; the water collection side ditch is connected to the municipal rainwater pipe through the overflow pipe; wherein, the motorway Rainwater from non-motor vehicle lanes passes through the pavement permeable surface layer and permeable concrete successively due to the cross slope of the road surface, and then flows into the water collection side ditch through the cover of the water collecting side ditch; the rainwater from the sidewalk passes through the cross slope of the sidewalk and directly flows through the cover of the dredging well into the catchment ditch, and the permeable surface layer is permeable asphalt concrete. In this design, the existing motor vehicle road surface is planed to a thickness of 20 mm, and permeable asphalt concrete is paved with a thickness of 40 mm.

The cover of the water-collecting side ditch is a rectangular cover with a thickness of 120mm, and there are 60mm wide right-angle grooves at both ends of the lateral side. layer and permeable concrete enter the water collecting side ditch through the U-shaped groove.

The water-collecting side ditch is a U-shaped ditch with an outer diameter of 900 mm, a width of 300 mm, and a depth of 350 mm, and the wall thickness of the water-collecting side ditch is 50 mm; the thickness of the water-collecting side ditch cover is 120 mm, and the length is 900 mm , The width is 300mm.

The longitudinal overlap of the water-collecting side ditch body adopts a groove-and-groove design, and the longitudinal side of the water-collecting side ditch bottom protrudes 40 mm, and the other side is concave 40 mm, forming a tongue-and-groove.

The depth of the dredging well is 650mm, the width is 300mm, the length is 900mm, and the wall thickness is 50mm; the cover plate of the dredging well is made of concrete, the thickness is 120mm, the length is 900mm, and the width is 300mm; There are three rows and five vertical holes on the cover plate of the dredging well, a total of fifteen round holes with a diameter of 50 mm.

The collection pipe is a plastic pipe with an inner diameter of 100 mm, and the collection pipe is 200 mm away from the bottom of the dredging well; the overflow pipe is a plastic pipe with a diameter of 40 mm, and the overflow pipe is 20 mm away from the upper mouth of the water collection side ditch.

The outer diameter of the circular seepage water storage tank is 1200mm, and the height is 1200mm; the outer diameter of the square seepage water storage tank is 1200mm in length and width, and the height is 1500mm; The outer circumference of the tank is respectively wrapped with a 50mm thick gravel layer with a particle size of 15-25mm.

The water-collecting side ditch, the water-collecting side ditch cover plate, the dredging well, the circular seepage water storage tank and the square seepage water storage tank are all made of concrete.

The dirt intercepting basket is a hemispherical PE hanging basket, and a cross-shaped hook is arranged at the opening of the dirt intercepting basket.

The construction method of the urban road sponge engineering system combined with road surface maintenance includes the construction steps of milling and re-paving of motor vehicle lanes and non-motor vehicle lanes; Construction steps of silting wells; construction steps of burying circular seepage tanks between existing trees in the side zone; construction of burying water collection side ditches and dredging wells at road flats between bicycle lanes and sidewalks Steps; the construction steps of embedding square seepage tanks between the existing trees on the sidewalk.

The construction steps of milling and re-paving of the motor vehicle lane and the non-motor vehicle lane are as follows:

1) Use a milling machine to mill and crush the old asphalt pavement of motor vehicle lanes and non-motor vehicle lanes on site, and remove a 20mm thick surface layer. On this basis, remove a 30cm wide and 80mm thick surface layer along the outer side of the road;

2) Add new materials, pave and preload, and then further compacted by road rollers to re-form a 40mm thick permeable surface layer. The material of the permeable surface layer is permeable asphalt concrete. Form a permeable concrete with a width of 30cm and a thickness of 80mm;

The construction steps of burying water collecting side ditches and dredging wells and burying circular water storage tanks under the side belts are as follows:

1) Uncover the curb along the road on the outside of the motorway, dig a 350mm deep trench, and dig a 650mm deep trench at the corresponding position between each tree;

2) Put the prefabricated water collecting side ditches and dredging wells into the ditch in sequence;

3) The tree planting and digging machine first makes a hole between the trees in the side zone, and a hole is made between two trees. The distance between the hole and the dredging well is 5-6m, and the diameter of the hole is 1300mm. The depth is 1800mm, and the soil on the side where the hole connects with the motorway is taken out;

4) Lay a 50mm thick gravel layer with a particle size of 15-25mm at the bottom of the hole;

5) The tree planting and digging machine puts the circular seepage storage tank into the hole, installs the collection pipe between the circular seepage storage tank and the dredging well, and fills the periphery with a 50mm thick gravel layer with a particle size of 15-25mm;

6) Lay soil with a thickness of 500mm above the 50mm-thick gravel layer with a particle size of 15-25mm;

7) Vegetation is planted after covering the soil, and the installation of the circular seepage storage tank can effectively supplement the water content that the main root system of the tree can reach the soil layer;

The construction steps of burying the water collecting side ditch and the dredging well at the flat teeth of the road between the non-motor vehicle lane and the sidewalk and burying the square water storage tank under the sidewalk are as follows:

1) Uncover the curb along the outside of the non-motorized vehicle lane, dig a 350mm deep trench, and dig a 650mm deep trench at the corresponding position between each tree;

2) Put the prefabricated water collecting side ditches and dredging wells into the ditch in sequence;

3) Between the sidewalk trees, uncover the existing sidewalk slab, dig a hole with a size of 1200mm*1200mm, and a depth of 1800mm, and take out the soil on the side where the hole connects with the non-motorized vehicle lane;

4) Lay a 50mm thick gravel layer with a particle size of 15-25mm at the bottom of the hole;

5) The tree planting and digging machine puts the square seepage water storage tank into the hole, installs the collection pipe between the square seepage water storage tank and the dredging well, and fills the periphery with a 50mm thick gravel layer with a particle size of 15 to 25mm;

6) Lay soil with a thickness of 500mm above the 50mm-thick gravel layer with a particle size of 15-25mm;

7) Vegetation is planted in the covering soil, and the installation of square seepage water storage tanks can supplement the water content that the main root system of sidewalk trees can reach the soil layer.

Beneficial effects: Compared with the prior art, the urban road sponge engineering system combined with road surface maintenance and its construction method of the present invention have the following advantages:

(1) Reduce municipal drainage pressure, collect a large amount of rainwater, and control the total annual runoff rate to 90%, which can withstand the once-in-30-year rainstorm without stagnant water; (2) There is no need to adjust the road greening large trees, only the shrub planting section Partial fine-tuning with the sidewalk; (3) Carry out at the same time as pavement maintenance, no need to modify the structure below the pavement, and the construction is more convenient; (4) The existing sewer system is not changed, and the rainwater retention device is added to effectively avoid or reduce the rainwater entering the sewer network (5) It can effectively avoid the pollution of downstream water bodies by the initial rainwater pollution on the road surface; (6) After the rainwater falls on the road surface, it can directly penetrate into the permeable surface layer of the road, effectively dispelling the surface runoff of the road surface (7) The surface runoff of the road surface is dispelled, and most of the rainwater is stored on the spot, which reduces the burden on the downstream drainage; (8) solves the problem that the road surface water affects driving safety, and reduces the expenditure on cleaning vehicles and water resources. (9) Combined with permeable water storage tanks, etc., to collect and store rainwater, increasing the proportion of rainwater reinfiltration soil; (10) The system has completed the self-organized irrigation of vegetation in the opposite side zone, reducing the cost of artificial irrigation, Save water resources; (11) Soil irrigation is more thorough and water resource utilization rate is improved. It is difficult for a small amount of artificial irrigation and rainfall to make water reach a certain depth of soil layer, which is not conducive to the growth of tree roots. The infiltration type of this project system Irrigation can effectively replenish the water content that the main root system of the tree can reach the soil layer; (12) The evenly distributed independent seepage storage tanks ensure the uniformity of water resource distribution and the normal growth of road greening plants; (13) ) The whole system does not require artificial material and energy input, and the operation and maintenance costs are low; (14) The system adopts the method of connecting pipes and trenches, and sets dredging ports and independent storage tanks separately, which has the characteristics of low maintenance and convenient maintenance; ( 15) The design strength of motor vehicle lanes has not been reduced after the transformation, ensuring that the general functions of urban roads will not be affected.

Description of drawings

Figure 1 is a plan view of the urban road sponge engineering system combined with road surface maintenance;

Fig. 2 is the sectional view of the urban road sponge engineering system combined with road surface maintenance;

Fig. 3 is a layout diagram of the water collecting side ditch cover plate;

Figure 4 is a cross-sectional view of the water-collecting ditch;

Fig. 5 is a sectional view of the dredging well;

Fig. 6 is the arrangement diagram of the dirt intercepting basket;

Fig. 7 is a cross-sectional view of a circular seepage storage tank;

Fig. 8 is a diagram of the construction process of the circular seepage storage tank.

detailed description

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

Figure 1-8 reference signs are: water collection side ditch 1, water collection side ditch cover plate 2, dredging well 3, dredging well cover plate 4, collection pipe 5, sewage intercepting basket 6, circular seepage storage tank 7 , overflow pipe 8, square seepage water storage tank 9, municipal rainwater pipe 10, municipal rainwater well 11, gravel layer with a particle size of 15-25mm 12, motor vehicle lane 13, side belt 14, non-motor vehicle lane 15, sidewalk 16, permeable Surface layer 17, tree planting excavator 18 and permeable concrete 19. Wherein the municipal rainwater pipe 10 and the municipal rainwater well 11 are current drainage facilities, and the municipal rainwater pipe 10 is connected to the bottom of the municipal rainwater well 11 .

For the old urban road sections with damaged road surface and low traffic flow, the urban road sponge engineering system combined with road surface maintenance includes water collecting side ditch 1, water collecting side ditch cover 2, dredging well 3, dredging well cover 4. Collection pipe 5, waste basket 6, circular seepage water storage tank 7, overflow pipe 8 and square seepage water storage tank 9.

For motor vehicle lanes 13 and non-motor vehicle lanes 15, the permeable surface layer 17 is calculated according to relevant specifications and engineering requirements. Generally, the thickness of the pavement should not be less than 20mm, and should not be greater than 40mm; the thickness of the re-paved asphalt pavement should be 40-50mm. The optimum thickness is 40mm. In this design, the existing motor vehicle road surface is planed to a thickness of 20 mm, and permeable asphalt concrete is paved with a thickness of 40 mm. The permeable concrete 19 has a width of 30cm and a depth of 80mm.

The road surface of the existing urban roads including motor vehicle lane 13, non-motor vehicle lane 15 and sidewalk 16 remains unchanged, and the motor vehicle lane 13 and non-motor vehicle lane 15 are excavated with a 20mm thick surface layer, and 40mm thick permeable asphalt concrete is paved. On this basis, the road The surface layer with a width of 30 cm and a thickness of 80 mm is planed along the outer side; the outer edge of the permeable surface layer 17 is close to the cover plate 2 of the water collection side ditch, and the rainwater passes through the permeable surface layer 17 of the road surface due to the cross slope of the road surface, and after passing through the permeable concrete 19 with a thickness of 80 mm, it passes through the collection The water side ditch cover plate 2 flows into the water collection side ditch 1; the rainwater directly flows into the water collection side ditch 1 through the water collection side ditch cover plate 2 after passing through the cross slope of the sidewalk 16 .

As shown in Figure 1-2, the water collecting side ditch 1 is set on the outer side of the motor vehicle lane 13 along the road level and at the road level between the non-motorized vehicle lane 15 and the sidewalk 16, and the water collecting side ditch 1 is covered with water Side ditch cover plate 2; dredging wells 3 are set every five to six meters along the catchment side ditch 1 to settle initial rainwater, and dredging well cover plates 4 are covered above the dredging wells 3, and the dredging well cover plates 4 are used daily Can open dredging well 3 and circular seepage water storage tank 7, square seepage water storage tank 9, carry out dredging, overhaul. Circular seepage water storage tank 7 is embedded between side sub-zone arbors, and circular seepage water storage tank 7 is provided with dredging well 3 one-to-one correspondence, makes things convenient for the maintenance and cleaning of circular seepage water storage tank 7. Buried square seepage water storage tank 9 between the existing arbors on sidewalk, square seepage water storage tank 9 and dredging well 3 one-to-one corresponding settings, facilitate the maintenance and cleaning of square seepage water storage tank 9. The water collecting side ditch 1 is connected with the circular seepage water storage tank 7 and the square seepage water storage tank 9 respectively through oblique collection pipes 5, and the mouth of the collection pipe 5 at the junction with the dredging well 3 is provided with a waste intercepting basket 6.

The rainwater from the motor vehicle lane 13 and the non-motor vehicle lane 15 passes through the cross slope of the road permeable surface layer 17, then flows into the water collection side ditch 1 through the water collection side ditch cover plate 2, and passes through the sedimentation of the dredging well 3 and the interception of sewage by the collection pipe 5 After the basket 6 is filtered, it flows into the circular infiltration water storage tank 7 and the square infiltration water storage tank 9 through the collection pipe 5, and then directly penetrates into the soil around the sidewalk and sidewalk trees to irrigate green vegetation and conserve groundwater. role. In case of heavy rain exceeding the 30-year standard, the excessive rainwater can be led to the municipal rainwater pipe through the overflow pipe for discharge.

As shown in Figure 3(a), the water-collecting side ditch cover 2 is made of concrete, and the water-collecting side ditch cover 2 is a rectangular cover with a thickness of 120 mm. There are 60 mm wide right-angle grooves at both ends of the lateral side, and the two pieces are spliced together. When forming a 120mm wide U-shaped groove. After the rainwater passes through the permeable surface layer 17 with a thickness of 40mm, it enters the catchment gutter 1 by the above-mentioned U-shaped groove.

As shown in Figure 3(b), the catchment ditch 1 is made of concrete. Usually, the curb width of the current urban road is 300mm, and the wall thickness of the concrete U-shaped ditch is 50mm. In order not to disturb the existing road surface, the catchment edge The net width of ditch 1 is taken as 200mm, and the net depth of catchment side ditch 1 is calculated to be no less than 230mm according to the requirements of rainwater discharge in the 30-year rainstorm return period for the passing area.

In the present invention, the water-collecting side ditch 1 is designed as a U-shaped ditch with an outer diameter of 900 mm, a width of 300 mm, and a depth of 350 mm. The water-collecting side ditch 1 has a wall thickness of 50 mm. At the same time, the water-collecting side ditch cover plate 2 has a thickness of 120 mm. , with a length of 900mm and a width of 300mm. The water-collecting side ditch 1 is arranged along the flat teeth on the outside of the motorway. The longitudinal overlap of the ditch body adopts the groove-and-groove design. The splicing between adjacent gutters 1 is convenient and has good airtightness.

The dredging well 3 is made of concrete, the depth of the dredging well 3 is 650mm, the width is 300mm, the length is 900mm, and the wall thickness is 50mm. Manhole cover 4. The dredging well cover plate 4 is made of concrete, with a thickness of 120mm, a length of 900mm, and a width of 300mm. There are three rows and five vertical holes on the dredging well cover plate 4, and a total of fifteen circular holes with a diameter of 50mm can collect rainwater and The position of the dredging well 3 is indicated to facilitate dredging and maintenance.

The collection pipe 5 is a plastic pipe with an inner diameter of 100mm, which connects the dredging well 3 and the circular seepage storage tank 7 or connects the dredging well 3 and the square seepage storage tank 9, and the collection pipe 5 is 200mm away from the bottom of the dredging well 3.

Circular seepage water storage tank 7 or square seepage water storage tank 9 are all concrete materials, and circular seepage water storage tank 7 outer diameter is 1200mm, and height is 1200mm, and square seepage water storage tank 9 outer diameter length and width are 1200mm, height It is 1500mm, and the volume can meet the requirement of 90% annual total runoff control rate of the sponge city. A gravel layer 12 with a thickness of 50 mm and a particle size of 15 to 25 mm is wrapped around the outer periphery of the circular infiltration water storage tank 7 or the square infiltration water storage tank 9, which can naturally infiltrate the stored rainwater into the soil.

As shown in Figure 4, the overflow pipe 8 is a plastic pipe with a pipe diameter of 40 mm, which connects the water collecting side ditch 1 and the municipal rainwater pipe 10, and the overflow pipe 8 is 20 mm away from the upper opening of the water collecting side ditch 1, and the circular seepage water storage tank 7 or When the square seepage water storage tank 9 is full of rainwater, the water level of the rainwater rises to the position of the overflow pipe 8 in the water collection side ditch 1, and in case of heavy rain exceeding the 30-year standard, the circular seepage water storage tank 7 or the square seepage water storage tank 9 After the rainwater is fully stored, excessive rainwater will be led to the municipal rainwater pipe 10 through the overflow pipe 8 to be discharged.

As shown in Figure 5, the receiving header 5 above the dredging well 3 can filter the sundries in the rainwater, and the sundries are left in the dirt intercepting basket 6, and the preliminary purified rainwater flows into the circular seepage water storage tank through the collection pipe 5 7 or in the square infiltration water storage tank 9; on the one hand, as shown in Figure 7, the rainwater enters the water collection through the water collection side ditch cover plate 2 after the permeable surface layer 17 cross slope of the motor vehicle road 13 and the non-motor vehicle road 15 The side ditch 1 is then imported into the circular infiltration water storage tank 7 through the collecting pipe 5, and directly penetrates into the soil of the side zone 14; The water-collecting ditch 1 is then imported into the square infiltration water storage tank 9 through the collecting pipe 5, and directly penetrates into the soil around the sidewalk 16 sidewalk trees to play the role of irrigating green vegetation and conserving groundwater.

As shown in Figure 6(a), the dirt intercepting basket 6 is installed on the collection pipe 5 connected to the water collecting side ditch 1, which can intercept the sundries in the rainwater and make the sundries enter the dredging well; as shown in Figure 6(b ), the dirt intercepting basket 6 is a hemispherical PE hanging basket, and the dirt intercepting basket 6 hanging basket mouth is provided with a cross-shaped hook, which is convenient for hooking and cleaning.

The construction method of the urban road sponge engineering system combined with road surface maintenance includes the construction steps of milling and re-paving of motor vehicle lanes and non-motor vehicle lanes; Construction steps of silting wells; construction steps of burying circular seepage tanks between existing trees in the side zone; construction of burying water collection side ditches and dredging wells at road flats between bicycle lanes and sidewalks Steps; the construction steps of embedding square seepage tanks between the existing trees on the sidewalk. The construction steps of milling and re-paving of motor vehicle lanes and non-motor vehicle lanes are as follows:

1) Use a milling machine to mill and crush the old asphalt pavement of motor vehicle lanes and non-motor vehicle lanes on site, and remove a 20mm thick surface layer. On this basis, remove a 30cm wide and 80mm thick surface layer along the outer side of the road;

2) Add new materials, pave and preload, and then further compacted by a road roller to re-form a 40mm thick permeable surface layer 17. The material of the permeable surface layer 17 is permeable asphalt concrete. Permeable concrete 19 with a width of 30 cm and a thickness of 80 mm is formed on the outside of the driveway;

The construction steps for burying water collecting side ditches and dredging wells along the road flat teeth on the outside of the motorway are as follows:

1) Uncover the curb along the outer side of the motorway 13, dig a 350mm deep trench, and dig a 650mm deep trench at the corresponding position (about 5-6m) between each tree;

2) Put the prefabricated 300mm*350mm*900mm catchment ditch 1 and the 300mm*650mm*900mm dredging well 3 into the trench in turn;

3) As shown in Figure 8 (a), the tree planting and digging machine 18 first punches holes between the trees in the side zone 14, a hole is made between the two trees, and the distance between the hole and the corresponding opening of the dredging well 3 positions is 5-6m, the hole is a circle with a diameter of 1300mm, and the soil on the side where the hole connects with the motorway is taken out;

4) As shown in Figure 8(b), lay a 50mm thick gravel layer 12 with a particle size of 15 to 25mm at the bottom of the hole;

5) As shown in Figure 8(c), the tree planting digging machine 18 puts the circular seepage storage tank 7 into the hole, installs the collection pipe 5 between the circular seepage storage tank 7 and the dredging well, and Fill 50mm thick gravel layer 12 with particle size 15-25mm;

6) As shown in Figure 8(d), lay soil with a thickness of 500 mm above the crushed stone layer 12 with a thickness of 50 mm and a particle size of 15 to 25 mm;

7) As shown in Figure 8(e), vegetation is planted after covering the soil, and the installation of the circular infiltration water storage tank 7 can effectively supplement the water content that the main root system of the side zone 14 trees can reach the soil layer;

The construction steps of burying the water collecting side ditch and the dredging well at the flat teeth of the road between the non-motor vehicle lane and the sidewalk and burying the square water storage tank under the sidewalk are as follows:

1) Uncover the curb along the outer side of the non-motorized vehicle lane 15, dig a 350mm deep trench, and dig a 650mm deep trench at the corresponding position between each tree;

2) Put the prefabricated catchment ditch 1 and the dredging well 3 into the ditch in sequence;

3) Between the 16 trees on the sidewalk, uncover the existing sidewalk slab, dig a hole with a size of 1200mm*1200mm, and a depth of 1800mm, and take out the soil on the side where the hole connects to the non-motorized vehicle lane;

4) Lay a 50mm thick gravel layer with a particle size of 15-25mm at the bottom of the hole;

5) The tree planting and digging machine puts the square seepage water storage tank 9 into the hole, installs the collection pipe 5 between the square seepage water storage tank 9 and the dredging well 3, and fills the periphery with a 50mm thick gravel layer with a particle size of 15 to 25mm ;

6) Lay soil with a thickness of 500mm above the 50mm-thick gravel layer with a particle size of 15-25mm;

7) Vegetation is planted in the covering soil, and the installation of the square infiltration water storage tank 9 can supplement the water content that the main root system of the sidewalk trees can reach the soil layer.

Claims (10)

1. the urban road sponge engineering system of combining road maintenance, existing urban road includes car lane (13), non-maneuver Track (15) and footpath (16), it is characterised in that: described footpath (16) road surface remains unchanged, and retains car lane (13) With the original structure below bicycle lane (15) surface layer, car lane (13) and bicycle lane (15) are excluded thickness 20- Again pave after 40mm permeable surface layer (17), and permeable surface layer (17) thickness is 40-50mm, the outer rim of described permeable surface layer (17) Proximity set waterside trench cover (2), proximity set waterside ditch permeable surface layer (17) divide into pervious concrete (19)；Described Car lane (13) outside is along at the flat tooth of road and between described bicycle lane (15) and footpath (16) at the flat tooth of road It is respectively provided with the gutter that catchments (1), catchments cover plate for side ditch (2) in the upper covering of the gutter that catchments (1)；Along catchmenting gutter (1) every five to six Rice arranges desilting well (3), and desilting well (3) connects with the gutter that catchments (1), covers desilting manhole cover plate in the top of desilting well (3) (4)；Car lane (13) outside be provided with along each desilting well (3) place at the flat tooth of road with the use of circle ooze water tank (7), circle is oozed water tank (7) and is embedded between the existing arbor that band is divided in side；The square water tank (9) that oozes is embedded in footpath (16) Existing arbor between；Catchment gutter (1) and circle is oozed water tank (7), square oozed between water tank (9) respectively by oblique Collecting pipe (5) connects, and is being provided with a section dirty basket (6) at collecting pipe (5) mouth of the gutter that catchments (1) joint；Described collection waterside Ditch (1) connects municipal administration rain pipe (10) by overflow pipe (8)；Wherein, car lane (13) and the rainwater of bicycle lane (15) Because of road surface horizontal wall inscription successively after the permeable surface layer in road surface (17), pervious concrete (19), import through the cover plate for side ditch (2) that catchments and catchment Gutter (1)；The rainwater of footpath (16) directly imports, by desilting manhole cover plate (4), the gutter that catchments after footpath (16) horizontal wall inscription (1), described permeable surface layer (17) is pervious asphalt concrete.

The urban road sponge engineering system of combining road the most according to claim 1 maintenance, it is characterised in that: described The cover plate for side ditch (2) that catchments is rectangle cover plate, and thick 120mm, transverse side two ends all have 60mm width trough with straight angle, Neighbor Set waterside ditch Forming 120mm width U-lag during cover plate (2) splicing, rainwater passes through permeable surface layer (17), pervious concrete (19) by by U-lag Entrance is catchmented gutter (1).

The urban road sponge engineering system of combining road the most according to claim 1 maintenance, it is characterised in that: described The gutter (1) that catchments be outer diameter length be 900mm, width be 300mm, the degree of depth be the U-shaped ditch of 350mm, the gutter that catchments (1) wall thickness 50mm；The described cover plate for side ditch that catchments (2) thickness is 120mm, and a length of 900mm, width are 300mm.

The urban road sponge engineering system of combining road the most according to claim 3 maintenance, it is characterised in that: described Gutter (1) ditch body longitudinal lap joint of catchmenting uses tongue and groove design, and longitudinal side, the gutter that catchments (1) bottom evagination 40mm, in opposite side Recessed 40mm, forms tongue and groove.

The urban road sponge engineering system of combining road the most according to claim 1 maintenance, it is characterised in that: described Desilting well (3) degree of depth is 650mm, width is 300mm, a length of 900, wall thickness is 50mm；Described desilting manhole cover plate (4) is mixed Solidifying soil material, thickness is 120mm, a length of 900mm, width are 300mm；Described desilting manhole cover plate (4) has three rows Five indulge, the circular hole of totally ten five diameter 50mm.

The urban road sponge engineering system of combining road the most according to claim 1 maintenance, it is characterised in that: described Collecting pipe (5) is internal diameter 100mm plastic tube, collecting pipe (5) distance desilting well (3) shaft bottom 200mm；Described overflow pipe (8) is Caliber 40mm plastic tube, overflow pipe (8) distance set waterside ditch (1) 20mm suitable for reading.

The urban road sponge engineering system of combining road the most according to claim 1 maintenance, it is characterised in that: described It is 1200mm that circle oozes water tank (7) external diameter, and height is 1200mm；Square water tank (9) external diameter length and width of oozing are 1200mm, high For 1500mm；Water tank (7) is oozed and square water tank (9) periphery of oozing is wrapped up respectively and arranged 50mm thickness particle diameter in described circle 15～25mm metallings (12).

The urban road sponge engineering system of combining road the most according to claim 1 maintenance, it is characterised in that: described Catchment gutter (1), the cover plate for side ditch that catchments (2), desilting well (3), circle oozes water tank (7) and the square water tank (9) that oozes is mixed Solidifying soil material.

The urban road sponge engineering system of combining road the most according to claim 1 maintenance, it is characterised in that: described Cutting dirty basket (6) is hemispherical PE Hanging Basket, cuts dirty basket (6) Hanging Basket mouth and sets cross hook.

10. the construction party of urban road sponge engineering system of combining road maintenance described in any one in claim 1-9 Method, it is characterised in that: include car lane and the milling of bicycle lane and the construction procedure again paved；Outside car lane Side buries, at the flat tooth of road, catchment gutter and the construction procedure of desilting well underground；Divide in side between the existing arbor of band and bury circle underground and ooze storage The construction procedure of tank；The construction step of catchment gutter and desilting well is buried at the flat tooth of road underground between bicycle lane and footpath Suddenly；The square construction procedure oozed and store tank is buried underground between the existing arbor of footpath；

Described car lane and the milling of bicycle lane and the construction procedure again paved are as follows:

1) with the milling of milling machine scene, broken car lane and bicycle lane old asphalt pavement, the thick surface layer of 20mm is excluded, On the basis of this, outside road, exclude wide 30cm, thick 80mm surface layer along the line again；

2) add virgin material, pave and precompressed, then be compacted further by road roller, re-form the thick permeable surface layer of 40mm, permeable Below surface layer, outside car lane and bicycle lane, form wide 30cm, thick 80mm pervious concrete；

Along burying catchment gutter and desilting well and divide leukorrhagia to bury circular storage underground in side at the flat tooth of road underground outside described car lane The construction procedure of water pot is as follows:

1) open along Road tooth outside existing car lane, under dig 350mm deep trench, under position corresponding between every strain arbor Dig 650mm deep trench；

2) gutter is catchmented and desilting well is sequentially placed in groove by prefabricated；

3) first Tree Planting Earthdrill is divided in side and is burrowed between the arbor of band, makes a call to a hole between two arbors, and hole is put with desilting well location Spacing 5-6m at corresponding hole, the circle of a diameter of 1300mm in hole, deep 1800mm, and hole is connected with car lane The soil of side takes out；

4) bottom burrowed mouth, 50mm thickness particle diameter 15～25mm metalling is laid；

5) circle is oozed water tank and is inserted in hole by Tree Planting Earthdrill, collecting pipe is installed to circle ooze water tank with catchment gutter it Between, periphery fills 50mm thickness particle diameter 15～25mm metalling；

6) above 50mm thickness particle diameter 15～25mm metalling, laying depth is the soil of 500mm；

7) carrying out vegetation plantation after earthing, after circle oozes the installation of water tank, complementary side divides the main root system of band arbor can arrive soil The water content of layer；

Catchment gutter and desilting well and under footpath is buried underground at the described flat tooth of road between bicycle lane and footpath The construction procedure burying square water tank underground is as follows:

1) open along Road tooth outside bicycle lane, under dig 350mm deep trench, dig under position corresponding between every strain arbor 650mm deep trench；

2) gutter is catchmented and desilting well is sequentially placed in groove by prefabricated；

3) between footpath arbor, open existing footpath guidance tape, under dig a hole mouth a size of 1200mm*1200mm, deeply 1800mm, and the soil taking-up of side that hole is connected with bicycle lane；

4) bottom burrowed mouth, 50mm thickness particle diameter 15～25mm metalling is laid；

5) the square water tank that oozes is inserted in hole by Tree Planting Earthdrill, collecting pipe is installed to the most square ooze water tank and desilting well it Between, periphery fills 50mm thickness particle diameter 15～25mm metalling；

6) above 50mm thickness particle diameter 15～25mm metalling, laying depth is the soil of 500mm；

7) carrying out vegetation plantation in earthing, supplementing the main root system of footpath arbor after the square installation oozing water tank can arrive The water content of soil layer.