CN116356630B

CN116356630B - Composite pavement facility

Info

Publication number: CN116356630B
Application number: CN202310187324.XA
Authority: CN
Inventors: 王耀堂; 陈嘉乐; 罗慧英; 张玥; 李晓伟; 毕琪; 胡金; 张辉
Original assignee: Guangzhou Key Public Construction Project Management Center; China Architecture Design and Research Group Co Ltd
Current assignee: Guangzhou Key Public Construction Project Management Center; China Architecture Design and Research Group Co Ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2024-02-20
Anticipated expiration: 2043-03-02
Also published as: CN116356630A

Abstract

The application relates to a composite pavement facility comprising: a first road surface, the first road surface being impermeable to water; a second road surface positioned on one side of the first road surface; the gravel layer is positioned below the second pavement and can store and infiltrate rainwater; and the linear drainage structure is arranged between the first pavement and the second pavement and is configured to collect rainwater on the first pavement and the second pavement and guide the collected rainwater into the gravel layer, and the rainwater in the gravel layer permeates into the soil layer. The invention has the effects of multiple energy conservation, environmental protection, low carbon and ecology, and is suitable for sponge city construction of non-motor vehicle lanes such as municipal roads, buildings, residential areas and the like.

Description

Composite pavement facility

Technical Field

The application belongs to the technical field of road construction, and particularly relates to a composite pavement facility.

Background

The permeable pavement is an important component for sponge city construction, and has multiple functions: water is saved to relieve the water resource crisis; the rainwater permeates and supplements underground water, so that the ecological environment of the area is improved; reducing and slowing down the rainwater runoff, reducing urban rainfall flood disasters and the like. The existing permeable pavement has the realistic problem that the permeability is greatly reduced due to serious blockage, the existing permeable pavement surface is generally permeable surface layers (bricks), permeable concrete, permeable asphalt pavement and the like, and the permeable performance is greatly reduced by 60-90% within 3-4 years due to serious pollution of air sand and dust and pavement, so that the function of the permeable pavement can not reach the requirement of the design life, and the management and cleaning cost is expensive and difficult to succeed.

Disclosure of Invention

In view of the foregoing, the present invention is directed to a composite pavement apparatus, which solves the above-mentioned problems of the prior art.

The purpose of the invention is realized in the following way:

a composite pavement facility comprising:

a first road surface, the first road surface being impermeable to water;

a second road surface positioned on one side of the first road surface;

the gravel layer is positioned below the second pavement and can store and infiltrate rainwater;

and the linear drainage structure is arranged between the first pavement and the second pavement and is configured to collect rainwater on the first pavement and the second pavement and guide the collected rainwater into the gravel layer, and the rainwater in the gravel layer permeates into the soil layer.

Further, the linear drainage structure comprises a hollow curb stone, wherein the hollow curb stone is provided with a drainage space, a water inlet and a first water seepage hole, and the water inlet and the first water seepage hole are arranged on the side wall of the drainage space; the water inlet is a rainwater inlet of the linear drainage structure, and the drainage space is a drainage channel of the linear drainage structure; the first water seepage hole is positioned below the water inlet and communicated with the gravel layer.

Further, a plurality of the hollow curbs are arranged in combination to constitute the linear drainage structure; wherein, the hollow curb Dan Cebi is further provided with a first overflow port and a second overflow port; the first overflow port is communicated with the municipal pipeline; the second overflow port is communicated with each hollow curb through a main overflow pipeline parallel to the linear drainage structure, so that rainwater can be overflowed into the hollow curb from a non-blocking position in a self-adaptive manner under the condition that part of the hollow curb is blocked.

Further, a lighting device is arranged in the drainage space, and the water inlet is used as a light hole and a fog penetrating hole.

Further, an illuminance sensor is further arranged in the drainage space, and the illuminance sensor detects the illumination intensity value of the illumination device to judge the clogging degree of the hollow road dental stone.

Further, a back flushing pipe is arranged in the drainage space and is used for flushing the bottom wall and the side wall of the drainage space; the backwash tube connects a source of flushing power and a backwash controller configured to control backwash operation.

Further, the composite pavement facility further comprises a water storage area, wherein rainwater permeated in the gravel layer partially flows to the water storage area for storage, and filtered water in the water storage area is communicated with the backwash pipe.

Further, the back flushing controller controls the back flushing pipe to be flushed twice in 3 months and 6 months each year.

Further, the backwashing controller is used for independently controlling the water flow pressure and flow rate of backwashing in each hollow road dental stone based on the clogging degree corresponding to the illumination intensity value detected by the illumination intensity sensor in each hollow road dental stone.

Further, a water pressure sensor is further arranged in the drainage space, when the water pressure sensor detects that the water pressure is lower than a threshold value, the illumination intensity value of the illumination sensor is judged, whether the illumination intensity value is lower than a lowest illumination value is controlled to turn on the illumination device, and whether the illumination intensity value after being turned on meets the flushing requirement is further detected.

Further, at least one of the first road surface and the second road surface is assembled by a plurality of road surface modules, and the road surface modules are prefabricated structures.

Further, the linear drainage structure is provided with a rainwater inlet, a drainage channel and a penetration inspection well, wherein the rainwater inlet is used for rainwater to flow into the drainage channel, the upper part of the penetration inspection well is communicated with the drainage channel, and the lower part of the penetration inspection well is communicated with the gravel layer.

Further, a dirt interception frame is arranged in the infiltration inspection well and is used for filtering rainwater flowing into the infiltration inspection well; the dirt cutting frame is suitable for mechanical operation of the municipal refuse transport vehicle.

Further, a water distribution pipe is connected to the side wall of the drainage channel, and rainwater in the drainage channel is drained to a distant gravel layer area through the water distribution pipe.

Further, the first road surface is lower than the second road surface, and the top end of the hollow road dental stone is leveled with the top end surface of the second road surface.

Further, the linear drainage structure comprises a drainage ditch, a ditch opening of the drainage ditch is a rainwater inlet, a second water seepage hole is formed in the side wall of the drainage ditch, the drainage ditch is further connected with a water guide pipe, and the second water seepage hole and the water guide pipe are communicated with the gravel layer.

Further, the infiltration trench is made of perforated resin concrete, and the aperture ratio of the second infiltration hole is not less than 1.5% -3%.

Further, a permeable geotextile is arranged between the gravel layer and the soil layer, and the unit area mass of the permeable geotextile is 100-300 g/m ² 。

Further, the hollow curbstone is made of plastic materials, metal materials or resin concrete materials.

Further, the linear drainage structure includes hollow curbs and gutters, which are alternately arranged.

Compared with the prior art, the invention has at least one of the following beneficial effects:

a) The composite pavement facility provided by the invention adopts an assembly process, solves the problem of all wet operation of the pavement, gives consideration to the influence of multiple factors such as building pavement functions, aesthetic landscapes, safety protection and the like, combines the rainwater permeable function with engineering devices and engineering technologies of the pavement landscapes, and can improve the efficiency, simplify the working procedure, and realize reasonable manufacturing cost and convenient maintenance.

b) The composite pavement facility provided by the invention can replace the conventional municipal roads, the road gullies of building cells and the rainwater inspection wells, so that the pavement landscape effect is improved, the number of conventional rainwater pipelines is reduced, and the comprehensive laying difficulty of an outdoor pipe network is reduced; the impermeable pavement surface layer material is adopted, so that the cleaning and the management are convenient, and the failure caused by blockage of the traditional permeable pavement is avoided; the integrated energy-saving type sponge city low-carbon environment-friendly water tank is provided with a back flushing function, can ensure the permanence of the integrated efficiency of the system, meets the design concept of low-carbon environment-friendly sponge city, and has good economic and social benefits.

c) The composite pavement facility provided by the invention can collect pavement rainwater, intercept solid matters and suspended matters and has a permeation function; the surface runoff rainwater enters the gravel layer through the drainage ditch or the hollow curbstone for storage and infiltration, and the rainwater exceeding the volume load is discharged into a municipal pipe network, so that the rainwater purification, infiltration and discharge are integrated.

Drawings

In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present description, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic plan view of a composite pavement facility according to the present invention;

FIG. 2 is a schematic cross-sectional view of a composite pavement facility according to the present invention;

FIG. 3 is a schematic view of the cross-sectional structure A-A in FIG. 1;

FIG. 4 is a schematic view of the cross-sectional structure B-B in FIG. 1;

fig. 5 is a schematic structural view of a backwash tube provided by the invention.

Reference numerals:

1. a first road surface; 2. a second road surface; a layer of 3-pebbles; 4-penetration inspection well; 5-a dirt cutting frame; 5-1, capping; 6-hollow curb; 6-1, draining space; 6-2, a water inlet; 6-3, a first water seepage hole; 6-4, cleaning the mouth; 7-an illumination device; 8-miston system; 9. a back flushing pipe; 9-1, flushing the hole.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

For the purpose of facilitating an understanding of the embodiments of the present application, reference will now be made to the following description of specific embodiments, taken in conjunction with the accompanying drawings, in which the embodiments are not intended to limit the embodiments of the present application.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the term "coupled" should be interpreted broadly, for example, as being fixedly coupled, as being detachably coupled, as being integrally coupled, as being mechanically coupled, as being electrically coupled, as being directly coupled, as being indirectly coupled via an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The terms "top," "bottom," "above … …," "below," and "on … …" are used throughout the description to refer to the relative positions of components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are versatile, irrespective of their orientation in space.

Example 1

In one embodiment of the present invention, as shown in fig. 1-4, a composite pavement apparatus is disclosed comprising:

a first road surface 1, said first road surface 1 being impermeable to water;

a second road surface 2 located on one side of the first road surface 1;

a gravel layer 3, the gravel layer 3 is positioned below the second pavement 2, and can store and infiltrate rainwater;

a linear drainage structure provided between the first road surface 1 and the second road surface 2, configured to collect rainwater on the first road surface 1 and the second road surface 2 and guide the collected rainwater into the gravel layer 3, the rainwater in the gravel layer 3 penetrating into the soil layer below and around the gravel layer 3. Wherein a linear drainage structure is arranged along the road surface advancing direction, a linear drainage structure can also be understood as the borderline of the first road surface 1 and the second road surface 2.

In this embodiment, the first road surface 1 is a traffic lane, and the second road surface 2 can be permeable, for example, the side of the traffic lane is a green land, and the green land directly permeates rainwater into the underlying gravel layer 3; the second road surface 2 may also be impermeable to water, e.g. the second road surface 2 is a pavement. It will be appreciated that the composite pavement facility of the present embodiment may be provided in a plurality of locations such as lanes, walkways, parking lots, parks, squares, walkways, etc.

In the embodiment, the porosity of the gravel layer 3 is more than or equal to 25%, water permeable geotextile is arranged between the gravel layer 3 and the soil layer, the thickness of the water permeable geotextile is 1.5mm, and the mass per unit area is 100-300 g/m ² The permeability is larger than the maximum water seepage requirement of the covered permeable facilities, and the covered permeable facilities have better soil conservation, water permeability and anti-blocking property.

In this example, the first road surface 1 and the second road surface 2 may be made of conventional materials such as common concrete, precast concrete modules, stone materials, floor tiles, ceramic tiles, and square stones. Preferably, at least one of the first pavement 1 and the second pavement 2 is assembled by a plurality of pavement modules, the pavement modules are prefabricated, and the pavement modules are rectangular concrete blocks, so that basic functions of assembly, bearing, friction and the like are met. Through designing the road surface into assembled structure, can prepare the modular standard product of design of multiple specification, can satisfy the assembly of different size road surfaces, promote the efficiency of construction.

In this embodiment, the linear drainage structure has a rainwater inlet, a drainage channel and a permeable inspection well 4, the rainwater inlet is used for rainwater to flow into the drainage channel, the upper portion of the permeable inspection well 4 is communicated with the drainage channel, and the lower portion of the permeable inspection well 4 is communicated with the gravel layer 3. The penetration inspection well is preferably finished, the distance between the bottom of the well and the underground water level is greater than or equal to 1.5m, and the well wall and the bottom of the well are provided with holes, and rainwater penetrates into the underground after passing through the gravel layer.

Because the rainwater has sundries, in order to avoid the sundries from blocking the drainage channel, a dirt interception frame 5 is arranged in the infiltration inspection well 4 and is used for filtering the sundries in the rainwater flowing into the infiltration inspection well 4, and the dirt interception frame 5 is provided with a cover cap 5-1 which can be opened and closed. The dirt blocking frame is made of stainless steel or plastic products, and is lined with non-woven fabrics, so that the dirt blocking frame can play a role in intercepting sundries and suspended matters in rainwater, and reduce indexes such as SS in the rainwater. The rainwater flowing out of the drainage channel is filtered through the sewage interception frame 5, and the filtered rainwater flows to the lower part of the infiltration inspection well 4, flows into the gravel layer 3 and then infiltrates into the soil layer.

Further, a drain pipe is also connected in the infiltration inspection well 4, and is connected to a municipal rainwater drainage pipe network, so that rainwater which is not infiltrated is drained into the municipal drainage pipe through the drain pipe.

Preferably, the dirt cutting frame 5 is suitable for mechanical operation of the municipal refuse transport vehicle, and comprises a series of actions of mechanical lifting, overturning, resetting and the like, so that the necessary mechanical strength is met, and the service life is not lower than that of the municipal refuse container. When the garbage in the sewage interception frame 5 needs to be cleaned, the municipal garbage truck is directly utilized to complete automatic operation.

In one alternative embodiment, a water distribution pipe is connected to the side wall of the drainage channel, and rainwater in the drainage channel is drained to a distant gravel layer area through the water distribution pipe. Specifically, the water distribution pipe is paved in the gravel layer 3, the water distribution pipe is a perforated pipe, and a plurality of through holes are formed in the water distribution pipe, so that rainwater can be uniformly guided to different positions in the gravel layer. Further, the water distribution pipe is perpendicular to the flowing water direction of the drainage channel or intersects with the drainage channel at a large angle. Through connecting the water distribution pipe at the lateral wall of drainage channel, realize will in time draw forth the rainwater when the rainfall is big, draw the rainwater to the remote place and ooze, enlarge and ooze the area down, promote and ooze the ability down.

In this embodiment, the linear drainage structure includes two structures, specifically:

the linear drainage structure of the first structure comprises hollow curbstones 6, and a plurality of the hollow curbstones 6 are combined and arranged to form the linear drainage structure; wherein the hollow curbstone 6 is provided with a drainage space 6-1, a water inlet 6-2 and a first water seepage hole 6-3, and the water inlet 6-2 and the first water seepage hole 6-3 are arranged on the side wall of the drainage space 6-1; wherein the water inlet 6-2 is a rainwater inlet of the linear drainage structure, and the drainage space 6-1 is a drainage channel of the linear drainage structure; the first water seepage hole 6-3 is positioned below the water inlet 6-2 and is communicated with the gravel layer 3. The first road surface 1 is lower than the second road surface 2, the top end of the hollow curbstone 6 is level with the top end surface of the second road surface 2, and during rainfall, rainwater on the first road surface 1 can flow into the drainage space 6-1 through the water inlet 6-2 of the hollow curbstone 6, so that water accumulation of the first road surface 1 can not be caused.

Further, the side wall of the hollow curbstone 6 is also provided with a first overflow port and a second overflow port; the first overflow port can be communicated with a municipal pipeline; the second overflow ports are communicated with each hollow curb stone 6 through a main overflow pipeline parallel to the linear drainage structure, namely, each second overflow port of each hollow curb stone 6 is connected with the main overflow pipeline through a branch overflow pipe, so that rainwater can adaptively overflow from the hollow curb stone 6 at a non-blocking position through the branch overflow pipe and the main overflow pipeline under the condition that part of the hollow curb stone 6 is blocked, and the drainage working reliability is improved.

Further, a lighting device 7 and/or a fog system 8 are arranged in the drainage space 6-1 of the hollow curbstone 6, and the water inlet 6-2 is used as a light hole and a fog hole. The landscape lighting function is realized by the lighting device in the hollow curbstone; the fog and illumination are buried underground in a non-motor vehicle lane, the relevant national regulations are met, the terminal device can be arranged in the curb, and the terminal device is arranged in the interior by using holes nearby.

The composite pavement facility adopting the hollow curbstone 6 is also provided with a cleaning system, the cleaning system adopts a vehicle-mounted mobile high-pressure cleaning vehicle, the top of the hollow curbstone 6 is provided with a cleaning port 6-4, the cleaning port 6-4 is communicated with the drainage space 6-1, and the interior of the drainage space 6-1 is flushed through the cleaning port 6-4.

Further, a back flushing pipe 9 is arranged in the drainage space 6-1, the back flushing pipe 9 is connected with a flushing power source and a back flushing controller, the back flushing pipe 9 is used for flushing the bottom wall and the side wall of the drainage space 6-1, the flushing power source can be a high-pressure flushing vehicle, and the back flushing controller is used for controlling back flushing operation. The back flushing pipe 9 can extend into the drainage space 6-1 through the cleaning port 6-4, and of course, the back flushing pipe 9 can be fixedly arranged in the drainage space 6-1 when the hollow road tartar 6 is assembled, and the water inlet end of the back flushing pipe 9 is provided with an interface which can be quickly detached and connected with the water outlet pipe of the high-pressure flushing vehicle.

Further, the composite pavement facility further comprises a water storage area which is communicated with the gravel layer 3, rainwater permeated in the gravel layer 3 partially flows to the water storage area for storage, and filtered water of the water storage area is communicated with the back flushing pipe 9. During flushing, the permeated rainwater is utilized, so that water is saved.

Preferably, the backwash tube 9 is a perforated tube having a plurality of flushing holes 9-1 as shown in fig. 5.

In one alternative embodiment, the hollow kerbstone 6 has a U-shaped cross section, the backwash tube 9 is abutted against the inner wall of the hollow kerbstone 6, and at least a portion of the flushing holes 9-1 are flushed vertically downward, and the flushing water flow enters the arc-shaped bottom of the U-shaped cross section tangentially, thus ensuring the cleaning effect.

In this embodiment, the backwash operation may be performed in either of two ways:

in the first back flushing mode, the back flushing controller controls the back flushing pipe (9) to be flushed twice in 3 months and 6 months each year. The timing control is adopted, the operation is convenient and the cost is low, and the restarting is carried out once every 3 months and 6 months.

In the second back flushing mode, an illuminance sensor is arranged in the drainage space 6-1 of the hollow curbstone 6, the inner wall of the hollow curbstone 6 can reflect light to a certain extent, the illuminance intensity value monitored by the illuminance sensor is large under the condition that the inner wall is not polluted by silt, and when the inner wall is polluted by the silt, the silt covers the inner wall or the lamp to reduce the illuminance intensity, thereby judging the clogging degree and further executing the cleaning operation. Specifically, the backwash controller controls the pressure and flow rate of the backwash water flow in each hollow kerbstone 6 based on the clogging degree corresponding to the illumination intensity value detected by the illumination intensity sensor in each hollow kerbstone 6. The illumination intensity value and the clogging degree are corresponding relation tables which are obtained through model data training in advance; the corresponding relation table also comprises corresponding numerical values of different clogging degree values and backwash pressure and flow; the back flush controller controls the flushing power source according to the back flush pressure and flow obtained from the corresponding relation table so as to realize accurate back flush action with low energy consumption.

Further, a water pressure sensor is further disposed in the drainage space 6-1, the water pressure sensor is configured to monitor the water pressure in the drainage space 6-1, and according to the monitored water pressure value, it can be determined whether the drainage space is draining, flushing is not needed when the water pressure value is large and the water pressure value is small, even when the water pressure value is 0, flushing may be needed. When the water pressure sensor detects that the water pressure is lower than the water pressure threshold value, the illumination intensity value of the illumination sensor is judged, the lighting device 7 is controlled to be started according to whether the illumination intensity value is lower than the lowest illumination value, and whether the illumination intensity value after the starting reaches the flushing requirement is further detected.

In this embodiment, the hollow curbstone 6 is made of plastic, metal or high-density resin concrete, and has good water-passing capability and good ring stiffness, and has the functions of water drainage, dirt blocking, water distribution and infiltration. Further, the opening ratio of the hollow curbstone 6 is 1.5-3%, and the size of the water inlet 6-2 is larger than that of the first water seepage hole 6-3, for example, the opening diameter of the water inlet 6-2 is 30-50 mm, and the diameter of the first water seepage hole 6-3 is 15-30 mm. The water inlet inflow of the hollow curbstone 6, the drainage capacity of the hollow part and the drainage capacity of the branch pipe connected with the municipal drainage pipeline should meet the requirement of road calculation drainage capacity, and the water discharge capacity should meet the specification of the current national standard and is not lower than the calculation drainage capacity of 10 years. The interior of the hollow road tartar is provided with the lighting, cleaning and fog-forest system, and the main pipes are all arranged in the soil on the right side of the road tartar, so that multiple requirements of landscape fog making, cooling and dust removing and road surface cleaning are met, and according to air pollution and road surface pollution conditions, timing or automatic spraying is carried out, and the water source can be a rainwater regulation pool, landscape water, reclaimed water and other miscellaneous water sources.

The linear drainage structure of the second structure comprises a drainage ditch, a ditch opening of the drainage ditch is a rainwater inlet, a second water seepage hole is formed in the side wall of the drainage ditch, the drainage ditch is further connected with a water guide pipe, and the second water seepage hole and the water guide pipe are communicated with the gravel layer 3; the side wall of the drainage ditch is connected with a water distribution pipe, so that rainwater can be led to the gravel layer 3 at a far position for infiltration. The infiltration trench is made of perforated resin concrete, the aperture ratio of the second infiltration hole is 1.5% -3%, and the aperture diameter of the second infiltration hole is 30-50 mm. During rainfall, the drainage ditch leads rainwater into the pavement gravel layer through the penetrating holes and the water guide pipes, water-permeable non-woven fabrics are arranged between the gravel cushion layer and underground soil, pavement rainwater enters the gravel layer through the drainage ditch and enters the soft penetrating pipes, the rainwater is temporarily stored in gaps of the gravel layer and slowly permeates into the underground, and the permeated rainwater is discharged into municipal drainage pipes through the drainage ditch (a water inlet).

In the embodiment, the infiltration trench is made of perforated resin concrete, the aperture ratio is not less than 1.5% -3%, and the laying gradient between inspection wells is 0.01-0.02.

In one alternative embodiment, the linear drainage structure comprises hollow curb stones 6 and gutters, the hollow curb stones 6 and gutters being alternately arranged. That is, the pavement means may adopt a drainage method of combining the hollow curbstone 6 and the drainage ditch.

The working process of the composite pavement facility of the embodiment comprises the following steps: when rainfall occurs, rainwater falls on a road surface and a roof firstly, flows into a hollow road tartar or a drainage ditch after converging, flows into a permeable inspection well, is trapped and filtered through a dirt-intercepting frame firstly in the permeable inspection well, is filled in a gravel layer after filtering, and continuously permeates into a soil layer simultaneously, along with continuous progress of rainfall, rainwater is continuously increased, rainwater is stored and permeated downwards, redundant rainwater flows through a water outlet of the permeable inspection well to enter the permeable ditch, then the rainwater is stored and permeated downwards in the permeable ditch, and the system is analogized to the next permeable inspection well, namely, the rainwater is continuously stored and permeated in the whole permeable-drainage integrated body, and when the maximum rainwater load of the system is exceeded, the system discharges the redundant rainwater into a municipal pipe network at the lower side.

The composite pavement facility provided by the embodiment has multiple effects of rainwater collection, infiltration, emission and landscape lighting, and can utilize the embedded lighting device to perform pavement lighting, and the composite pavement facility can be arranged at a plurality of positions such as lanes, sidewalks, parking lots, parks, squares and walkways, is also suitable for a rainwater utilization system of a building district with moderate scale, and the whole system is a whole set of complete equipment product. In a specific project, the rainwater penetration amount, the storage amount, the discharge amount, the project scale and the like need to be calculated and determined according to building and community rainwater utilization project technical specifications.

Compared with the prior art, the composite pavement facility provided by the embodiment can at least realize one of the following beneficial effects:

1. the invention has simple design principle and convenient construction, can realize the collection of rainwater and the initial sewage interception, can realize the infiltration of rainwater, can save underground water sources and beautify the surrounding ecological environment, can normally discharge redundant rainwater, and has the drainage function of a conventional drainage pipe; the sponge urban construction method has the effects of multiple energy conservation, environmental protection, low carbon and ecology, and is suitable for sponge urban construction of non-motor vehicle lanes such as municipal roads, buildings and communities.

2. The composite pavement facility can be prefabricated in a factory, the finished product module is a standard module, the construction efficiency is improved, the assembly of pavement with different sizes can be met, and the application is wide.

3. The intelligent pavement facility coupled with the sponge city function can realize the initial purification of rainwater, the infiltration of the rainwater and the normal discharge and collection of redundant rainwater. The invention can replace or reduce the traditional rainwater pipeline, the rainwater inlet and the rainwater inspection well, realize rainwater collection and drainage by adopting the permeable open ditch, reduce the traditional rainwater inspection well on the road surface and improve the road surface landscape effect of the building district; the traditional deeply buried rainwater pipeline is reduced, and the laying difficulty of an outdoor pipe network is reduced; the infiltration ditch is convenient to clean and manage, and the harm caused by blockage of the traditional rainwater pipeline is avoided.

The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present application, and are not meant to limit the scope of the invention, but to limit the scope of the invention.

Claims

1. A composite pavement apparatus, comprising:

a first road surface (1), wherein the first road surface (1) is watertight, and the first road surface (1) is a roadway;

the second pavement (2) is positioned on one side of the first pavement (1), and the second pavement (2) is permeable;

a gravel layer (3), wherein the gravel layer (3) is positioned below the second pavement (2) and can store and infiltrate rainwater;

a linear drainage structure provided between the first road surface (1) and the second road surface (2) and configured to collect rainwater on the first road surface (1) and the second road surface (2) and guide the collected rainwater into the gravel layer (3), the rainwater in the gravel layer (3) penetrating into a soil layer; a water distribution pipe is paved in the gravel layer (3), and the water distribution pipe is a perforated pipe which can guide rainwater to different positions in the gravel layer;

the first pavement (1) and the second pavement (2) are assembled by a plurality of pavement modules, and the pavement modules are of prefabricated structures;

the linear drainage structure comprises a hollow curb stone (6), wherein the hollow curb stone (6) is provided with a drainage space (6-1), a water inlet (6-2) and a first water seepage hole (6-3), and the water inlet (6-2) and the first water seepage hole (6-3) are arranged on the side wall of the drainage space (6-1);

wherein the water inlet (6-2) is a rainwater inlet of the linear drainage structure, and the drainage space (6-1) is a drainage channel of the linear drainage structure; the first water seepage hole (6-3) is positioned below the water inlet (6-2) and is communicated with the gravel layer (3);

the side wall of the hollow curbstone (6) is also provided with a first overflow port and a second overflow port; the first overflow port is communicated with the municipal pipeline; the second overflow port is communicated with each hollow curbstone (6) through a main overflow pipeline parallel to the linear drainage structure, so that rainwater overflows from the hollow curbstone (6) at a non-clogging position in a self-adaptive manner under the condition that part of the hollow curbstone (6) is clogged;

a lighting device (7) and/or a fog system are arranged in the drainage space (6-1), and the water inlet is used as a light hole and a fog hole;

a back flushing pipe (9) is arranged in the drainage space (6-1), and the back flushing pipe (9) is used for flushing the bottom wall and the side wall of the drainage space (6-1);

the back flushing pipe (9) is connected with a flushing power source and a back flushing controller, and the back flushing controller is configured to control back flushing operation;

the backwashing controller is used for independently controlling the water flow pressure and flow rate of backwashing in each hollow kerbstone (6) based on the clogging degree corresponding to the illumination intensity value detected by the illumination intensity sensor in each hollow kerbstone (6);

and a water pressure sensor is further arranged in the drainage space (6-1), when the water pressure sensor detects that the water pressure is lower than a threshold value, the illumination intensity value of the illumination sensor is judged, the lighting device is controlled to be started according to whether the illumination intensity value is lower than a lowest illumination value, and whether the illumination intensity value after the starting reaches a flushing requirement is further detected.

2. The composite pavement installation according to claim 1, wherein the first pavement (1) is lower than the second pavement (2), the tip of the hollow kerbstone (6) being level with the tip surface of the second pavement (2).

3. A composite pavement installation according to claim 2, wherein a plurality of said hollow kerbs (6) are arranged in combination to form said linear drainage structure.

4. The composite pavement installation according to claim 1, further comprising a water storage zone to which the rainwater permeated in the gravel layer (3) partially flows for storage, the filtered water of the water storage zone being in communication with the backwash pipe (9).

5. The composite pavement installation according to claim 1, characterized in that the linear drainage structure has a rainwater inlet for rainwater to flow into the drainage channel, a drainage channel and a penetration inspection well (4), an upper portion of the penetration inspection well (4) being in communication with the drainage channel, a lower portion of the penetration inspection well (4) being in communication with the gravel layer (3);

a dirt interception frame (5) is arranged in the infiltration inspection well (4) and is used for filtering rainwater flowing into the infiltration inspection well (4);

the dirt cutting frame (5) is suitable for mechanical operation of the municipal refuse transport vehicle.

6. The composite pavement installation according to claim 1, wherein the linear drainage structure comprises hollow curbstones (6) and gutters, the hollow curbstones (6) and gutters being alternately arranged.