CN116356630A - A compound pavement facility - Google Patents

Abstract

The present application relates to a compound pavement facility, comprising: a first pavement, the first pavement is impermeable; a second pavement, located on one side of the first pavement; a gravel layer, the gravel layer is located on the second pavement below, can store and infiltrate rainwater; the linear drainage structure, the linear drainage structure is arranged between the first road surface and the second road surface, and is configured to collect the rainwater on the first road surface and the second road surface, And the collected rainwater is introduced into the gravel layer, and the rainwater in the gravel layer infiltrates into the soil layer. The invention has multiple energy-saving, environmental protection, low-carbon and ecological effects, and is suitable for the construction of sponge cities for non-motor vehicle lanes such as municipal roads, pedestrian walkways such as buildings and communities.

Description

A compound pavement facility

technical field

The application belongs to the technical field of road construction, and in particular relates to a composite road surface facility.

Background technique

Permeable pavement is an important part of sponge city construction and has multiple functions: saving water and alleviating water resource crisis; rainwater infiltration replenishes groundwater and improves the regional ecological environment; reducing and slowing down the amount of rainwater runoff and reducing urban rain and flood disasters, etc. Existing permeable pavement has the practical problem of serious clogging, which leads to a large drop in permeable performance. The current permeable pavement surface layer is generally permeable surface layer (brick), permeable concrete, permeable asphalt pavement, etc. Due to serious air dust and road pollution, in 3- Within 4 years, the permeation performance will drop by 60-90%, causing the permeable pavement function to be far below the design life requirements, and the management and cleaning costs are expensive and unsustainable.

Contents of the invention

In view of the above analysis, the present invention aims to provide a composite pavement facility to solve the above technical problems existing in the prior art.

The purpose of the present invention is achieved like this:

A composite pavement facility comprising:

a first road surface, the first road surface is impermeable;

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

a gravel layer, the gravel layer is located below the second road surface and can store and infiltrate rainwater;

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

Further, the linear drainage structure includes a hollow curbstone, the hollow curbstone has 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; Wherein, the water inlet is the rainwater inlet of the linear drainage structure, and the drainage space is the drainage channel of the linear drainage structure; the first seepage hole is located below the water inlet, and is connected with the gravel layer connected.

Further, a plurality of hollow curbstones are arranged in combination to form the linear drainage structure; wherein, the side wall of the hollow curbstone is also provided with a first overflow port and a second overflow port; the first overflow port is connected with the municipal pipeline communication; the second overflow port communicates with each of the hollow curbstones through the main overflow pipeline parallel to the linear drainage structure, so that when part of the hollow curbstones are silted up, the rainwater Suitably overflows from within said hollow curb at non-clogged locations.

Further, an illuminating device is provided in the drainage space, and the water inlet also serves as a light-transmitting hole and a mist-penetrating hole.

Further, an illuminance sensor is also provided in the drainage space, and the illuminance sensor detects the illumination intensity value of the lighting device to judge the clogging degree of the hollow curbstone.

Further, a backwash pipe is provided in the drainage space, and the backwash pipe is used for flushing the bottom wall and the side wall of the drainage space; the backwash pipe is connected with a flushing power source and a backwash controller, and the backwash A flush controller is configured to control backwash operations.

Further, the composite pavement facility also includes a water storage area, and part of the rainwater infiltrated in the gravel layer flows to the water storage area for storage, and the filtered water in the water storage area communicates with the backwashing pipe.

Further, the backwash controller controls the backwash pipe to be flushed twice a year in March and June.

Further, the backwash controller individually controls the backwash water pressure and flow rate in each hollow curb stone based on the clogging degree corresponding to the illumination intensity value detected by the illumination sensor in each hollow curb stone.

Further, a water pressure sensor is also provided in the drainage space. When the water pressure sensor detects that the water pressure is lower than the threshold value, the illumination intensity value of the illuminance sensor is judged. According to whether the illumination intensity value is lower than the minimum illumination value to control the opening of the lighting device, and then further detect whether the lighting intensity value after turning on meets the flushing requirement.

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

Further, the linear drainage structure has a rainwater inlet, a drainage channel and a seepage inspection well, the rainwater inlet allows rainwater to flow into the drainage channel, the upper part of the seepage inspection well communicates with the drainage channel, and the seepage inspection well The lower part communicates with the gravel layer.

Further, the seepage inspection well is provided with a dirt intercepting frame for filtering rainwater flowing into the seepage inspection well; the dirt intercepting frame is adapted to the mechanical operation of municipal garbage transport vehicles.

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

Further, the first road surface is lower than the second road surface, and the top of the hollow curb is flush with the top surface of the second road surface.

Further, the linear drainage structure includes a drainage ditch, the mouth of the drainage ditch is a rainwater inlet, the side wall of the drainage ditch is provided with a second water seepage hole, the drainage ditch is also connected with a water guide pipe, the first The two seepage holes and the aqueduct are both in communication with the gravel layer.

Further, the seepage ditch is made of perforated resin concrete, and the opening ratio of the second seepage hole should not be less than 1.5%-3%.

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

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

Further, the linear drainage structure includes hollow curb stones and drainage ditches, and the hollow curb stones and drainage ditches are arranged alternately.

Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

a) The composite pavement facility provided by the present invention adopts an assembly process to solve the problem of all wet operations on the pavement, taking into account the influence of multiple factors such as building pavement function, aesthetic landscape, safety protection, etc., combining the rainwater permeable function with the engineering device of the road landscape and The integration of engineering technology can improve efficiency, simplify procedures, reasonable cost and convenient maintenance.

b) The composite pavement facilities provided by the present invention can replace traditional municipal roads, rainwater outlets and rainwater inspection wells in construction community roads, improve the road surface landscape effect, reduce the number of traditional rainwater pipes, and reduce the difficulty of comprehensive laying of outdoor pipe networks; The use of non-permeable pavement surface materials is convenient for cleaning and management, and avoids the failure of traditional permeable pavement due to blockage; it is equipped with backwashing function, which can ensure the long-term comprehensive performance of the system and meet the low-carbon and green design concept of sponge city. Better economic and social benefits.

c) The composite pavement facilities provided by the present invention can collect road rainwater, intercept solid matter and suspended matter, and have the function of infiltration; surface runoff rainwater enters the gravel layer for storage and infiltration through drainage ditches or hollow curbstones, and the rainwater exceeding the volumetric load is discharged Into the municipal pipe network, integrating rainwater purification, infiltration and discharge collection.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments described in the embodiments of this specification, and those skilled in the art can also obtain other drawings based on these drawings.

Fig. 1 is the schematic plan view of the composite pavement facility provided by the present invention;

Fig. 2 is the schematic cross-sectional structure diagram of the composite pavement facility provided by the present invention;

Fig. 3 is a schematic diagram of A-A section structure in Fig. 1;

Fig. 4 is the B-B sectional structure schematic diagram among Fig. 1;

Fig. 5 is a schematic structural view of the backwashing pipe provided by the present invention.

Reference signs:

1. The first road surface; 2. The second road surface; 3- gravel layer; 4- seepage inspection well; 2. Water inlet; 6-3. First water seepage hole; 6-4. Cleaning port; 7. Lighting device;

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In order to facilitate the understanding of the embodiments of the present application, the following will further explain and illustrate with specific embodiments in conjunction with the accompanying drawings, and the embodiments do not constitute a limitation to the embodiments of the present application.

In the description of the embodiments of the present invention, it should be noted that unless otherwise specified and limited, the term "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

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

Example 1

A specific embodiment of the present invention, as shown in Figures 1 to 4, discloses a composite pavement facility, comprising:

The first road surface 1, the first road surface 1 is impermeable;

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

A gravel layer 3, the gravel layer 3 is located below the second road surface 2, capable of storing and infiltrating rainwater;

A linear drainage structure, the linear drainage structure is arranged 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 In the gravel layer 3 , the rainwater in the gravel layer 3 infiltrates into the soil layer below and around the gravel layer 3 . Wherein, the linear drainage structure is arranged along the advancing direction of the road surface, and the linear drainage structure can also be understood as the boundary line between the first road surface 1 and the second road surface 2 .

In the present embodiment, the first road surface 1 is a roadway, and the second road surface 2 can be permeable, such as a green space next to the roadway, and the green space directly infiltrates rainwater into the gravel layer 3 below; the second road surface 2 can also be impermeable, such as The second road surface 2 is a sidewalk. It can be understood that the composite pavement facilities of this embodiment can be installed in multiple locations such as driveways, sidewalks, parking lots, parks, squares, and footpaths.

In this embodiment, the porosity of the gravel layer 3 is ≥ 25%, and a permeable geotextile is arranged between the gravel layer 3 and the soil layer. The thickness of the permeable geotextile is 1.5mm, and the mass per unit area is 100-300g/m ² . It must be greater than the maximum water seepage requirement of the covered infiltration facilities, and it must have better soil retention, water permeability and anti-blocking properties.

In this example, the first road surface 1 and the second road surface 2 can use traditional materials such as ordinary concrete, prefabricated concrete modules, stone, floor tiles, ceramic tiles, and ashlar. Preferably, at least one of the first road surface 1 and the second road surface 2 is assembled from a plurality of road surface modules, the road surface modules are prefabricated structures, and the road surface modules are rectangular concrete blocks, which meet the requirements of assembly, load bearing, Basic road surface functions such as friction. By designing the pavement as a prefabricated structure, various specifications of stereotyped modular standard products can be prepared, which can meet the assembly of pavements of different sizes and improve construction efficiency.

In this embodiment, the linear drainage structure has a rainwater inlet, a drainage channel and a seepage inspection well 4, the rainwater inlet allows rainwater to flow into the drainage channel, and the upper part of the seepage inspection well 4 communicates with the drainage channel, so The lower part of the seepage inspection well 4 communicates with the gravel layer 3 . The seepage inspection well is preferably a finished product. The distance between the bottom of the well and the groundwater level is greater than or equal to 1.5m. Holes are opened on the well wall and the bottom of the well. Rainwater seeps into the ground after passing through the gravel layer.

Since there are sundries in the rainwater, in order to prevent the sundries from blocking the drainage channel, a dirt intercepting frame 5 is provided in the seepage inspection well 4 to filter the sundries in the rainwater flowing into the seepage check well 4, and the dirt intercepting frame 5 A cap 5-1 capable of opening and closing is provided. The trash catch frame is made of stainless steel or plastic, lined with non-woven fabric, which can play a role in intercepting sundries and suspended solids in rainwater, and reduce SS and other indicators in rainwater. The rainwater flowing out from the drainage channel is first filtered through the sewage intercepting frame 5, and the filtered rainwater flows to the lower part of the seepage inspection well 4, flows into the gravel layer 3, and then infiltrates into the soil layer.

Further, a drainage pipe is also connected to the seepage inspection well 4, and the drainage pipe is connected to the municipal rainwater drainage pipe network, and the rainwater that is too late to infiltrate is discharged into the municipal drainage pipe through the drainage pipe.

Preferably, the dirt intercepting frame 5 is suitable for the mechanical operation of municipal garbage transport vehicles, including a series of actions such as mechanical lifting, turning, and resetting, so as to meet the necessary mechanical strength and have a service life not lower than that of urban garbage bins. When the garbage in the dirt intercepting frame 5 needs to be cleaned up, the municipal garbage truck can be directly used to complete the automatic operation.

In one optional implementation manner, a water distribution pipe is connected to the side wall of the drainage channel, and the rainwater in the drainage channel is diverted to a distant gravel layer area through the water distribution pipe. Specifically, the water distribution pipe is laid in the gravel layer 3, the water distribution pipe is a perforated pipe, and a plurality of through holes are arranged on the water distribution pipe, which can evenly guide rainwater to different positions in the gravel layer. Further, the water distribution pipe intersects the water flow direction of the drainage channel vertically or at a large angle. By connecting the water distribution pipe on the side wall of the drainage channel, the rainwater will be drawn out in time when the rainfall is heavy, and the rainwater will be drawn to a farther place for infiltration, expanding the infiltration area and improving the infiltration capacity.

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

The linear drainage structure of the first structure includes a hollow curbstone 6, and a plurality of the hollow curbstones 6 are combined and arranged to form the linear drainage structure; wherein, the hollow curbstone 6 has a drainage space 6-1 and a water inlet 6 -2 and the first water seepage hole 6-3, 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 The rainwater inlet of the linear drainage structure, the drainage space 6-1 is the drainage channel of the linear drainage structure; the first seepage hole 6-3 is located below the water inlet 6-2, and is connected to the The gravel layer 3 is connected. The first road surface 1 is lower than the second road surface 2, and the top of the hollow curbstone 6 is flat with the top surface of the second road surface 2. When it rains, the rainwater on the first road surface 1 can pass through the hollow curbstone 6. The water inlet 6-2 flows into the drainage space 6-1, which will not cause water accumulation on the first road surface 1.

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 communicate with the municipal pipeline; the second overflow port is parallel to the linear drainage The main overflow pipeline of the structure communicates with each of the hollow curb stones 6, that is, the second overflow port of each of the hollow curb stones 6 is connected to the main overflow pipeline through a branch overflow pipe, so that in it When some of the hollow stones 6 are clogged, rainwater adaptively overflows from the hollow stones 6 at non-blocked places through branch overflow pipes and main overflow pipes, which improves the reliability of drainage work.

Further, the drainage space 6-1 of the hollow curbstone 6 is provided with an illuminating device 7 and/or a fogging system 8, and the water inlet 6-2 also serves as a light-transmitting hole and a mist-penetrating hole. Through the lighting device in the hollow curb, the landscape lighting function is realized; the fog forest and lighting are buried underground in the non-motorized vehicle lane, which meets the relevant national regulations. The terminal device can be installed in the curb, and the nearest hole is used to enter the interior.

Composite pavement facilities using empty road stone 6 are also equipped with a cleaning system. The cleaning system uses a vehicle-mounted mobile high-pressure washing vehicle. A cleaning port 6-4 is set on the top of the hollow road stone 6. The cleaning port 6-4 is connected to the drainage space 6-1. Connected to flush the inside of the drainage space 6-1 through the cleaning port 6-4.

Further, a backwash pipe 9 is provided in the drainage space 6-1, and the backwash pipe 9 is connected to a flushing power source and a backwash controller, and the backwash pipe 9 is used for flushing the bottom of the drainage space 6-1. The wall and side wall, the washing power source can be a high-pressure washing car, and the backwashing controller is used to control the backwashing operation. Wherein, the backwash pipe 9 can extend into the drainage space 6-1 through the cleaning port 6-4. Of course, when the hollow curb 6 is assembled, the backwash pipe 9 can be fixedly arranged in the drainage space 6-1. The water inlet end of the flushing pipe 9 is provided with an interface, which can be quickly disassembled and connected to the outlet pipe of the high-pressure washing vehicle.

Further, the composite pavement facility also includes a water storage area, the water storage area communicates with the gravel layer 3, and the rainwater infiltrated in the gravel layer 3 partially flows to the water storage area for storage, and the filtered water in the water storage area is connected with the The backwash pipe 9 communicates. When flushing, use the infiltrated rainwater to save water.

Preferably, the backwashing pipe 9 is a perforated pipe with multiple flushing holes 9-1, as shown in FIG. 5 .

In one of the optional implementations, the hollow curbstone 6 has a U-shaped section, the backwash pipe 9 is close to the inner wall of the hollow curbstone 6, and the flushing direction of at least a part of the flushing holes 9-1 is vertically downward. The water flow tangentially enters the arc-shaped bottom of the U-shaped section, which ensures the cleaning effect.

In this embodiment, the backwashing operation can be carried out in any of the following two ways:

In the first backwashing mode, the backwashing controller controls the backwashing pipe (9) to flush twice a year in March and June. It adopts timing control and restarts once a year in March and June, which is easy to operate and low in cost.

In the second backwashing method, an illuminance sensor is installed in the drainage space 6-1 of the hollow curb 6. The inner wall of the hollow curb 6 can reflect light to a certain extent. If the lighting intensity value is large, when the inner wall is polluted by silt, the silt covers the inner wall or the lamp, which will reduce the lighting intensity, so as to judge the degree of silting, and then perform cleaning operations. Specifically, the backwashing controller individually controls the backwashing water pressure and flow in each hollow curbstone 6 based on the clogging degree corresponding to the illumination intensity value detected by the illumination sensor in each hollow curbstone 6 . Among them, the lighting intensity value and the degree of silting are the corresponding relationship table obtained through the training of the model data in advance; the corresponding relationship table also includes the corresponding values of different silting degree values and backwash pressure and flow; The backwash pressure and flow obtained in the relationship table control the flushing power source to achieve accurate and low-energy backwashing actions.

Further, a water pressure sensor is also provided in the drainage space 6-1, and the water pressure sensor is used to monitor the water pressure in the drainage space 6-1. According to the monitored water pressure value, it can be judged that the water pressure in the drainage space is Whether it is draining or not, when it is draining and the water pressure value is high, there is no need to flush, and when the water pressure value is low or even 0, flushing may be required. When the water pressure sensor detects that the water pressure is lower than the water pressure threshold, then judge the illumination intensity value of the illumination sensor, and control the opening of the illumination device 7 according to whether the illumination intensity value is lower than the minimum illumination value, and further Detect whether the lighting intensity value after turning on meets the flushing requirement.

In this embodiment, the hollow curbstone 6 is made of plastic material, metal material or high-density resin concrete material, which has better water flow capacity and better ring stiffness, and also has the functions of drainage, pollution prevention, water distribution and penetration. 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 the size of the first seepage hole 6-3, such as the diameter of the opening of the water inlet 6-2 is 30-50mm , the diameter of the first seepage hole 6-3 is 15-30 mm. Among them, the water intake of the hollow curbstone 6, the drainage capacity of the hollow part, and the drainage capacity of the branch pipes connected to the municipal drainage pipes shall meet the requirements for the calculated drainage volume of the road, and shall meet the provisions of the current national regulations, and shall not be lower than the once-in-10-year calculation. displacement. Through the installation of lighting, cleaning and fogging systems in the hollow curb, the main pipes are all set in the soil on the right side of the curb to meet the multiple requirements of landscape fogging, cooling and dust removal, and road cleaning. According to the air pollution and road pollution conditions, regular or Automatic spraying, the water source can use miscellaneous water sources such as rainwater storage tanks, landscape water, and reclaimed water.

The linear drainage structure of the second structure includes a drainage ditch, the mouth of the drainage ditch is a rainwater inlet, the side wall of the drainage ditch is provided with a second water seepage hole, and the drainage ditch is also connected with a water guide pipe. The two seepage holes and the aqueduct are all communicated with the gravel layer 3; the side walls of the drainage ditch are connected with water distribution pipes, which can lead rainwater to the far gravel layer 3 for infiltration. The seepage ditch is made of perforated resin concrete, the opening rate of the second seepage hole is 1.5%-3%, and the opening diameter of the second seepage hole is 30-50mm. When it rains, the drainage channels lead the rainwater into the sidewalk gravel layer through the permeable holes and aqueducts. The gravel cushion and the underground soil are made of permeable non-woven fabrics. There are gaps in the gravel layer, slowly infiltrating into the ground, and the rainwater that is too late to infiltrate is discharged into the municipal drainage pipe through the drainage ditch (rainwater outlet).

In this embodiment, the seepage ditch is made of perforated resin concrete, the opening ratio should not be less than 1.5%-3%, and the laying slope between inspection wells is 0.01-0.02.

In an optional embodiment, the linear drainage structure includes hollow curbstones 6 and drainage ditches, and the hollow curbstones 6 and drainage ditches are arranged alternately. That is to say, the pavement facilities can adopt the drainage method of the combination of hollow curbstone 6 and drainage ditches.

The working process of the composite pavement facility of this embodiment: when rainfall occurs, the rainwater first falls on the road surface and the roof, and then enters the hollow curb or drainage ditch after confluence, flows into the seepage inspection well, and first passes through the interception frame in the seepage inspection well. , Filtration, after filtration, the rainwater is filled in the gravel layer, and at the same time, it infiltrates into the soil layer continuously. As the rainfall continues, the rainwater continues to increase, and the rainwater infiltrates while being stored, and the excess rainwater will overflow the outlet of the infiltration inspection well. After entering the seepage ditch, the rainwater is stored and infiltrated in the seepage ditch, and so on to the next seepage inspection well, that is, it is continuously stored and infiltrated in the whole infiltration-drainage integration. When the maximum rainwater load of the system is exceeded, The system drains excess stormwater into the downstream municipal pipe network.

The composite pavement facility provided by this embodiment has multiple functions of rainwater collection, infiltration, discharge, and landscape lighting, and can also use embedded light-emitting devices for road lighting. This composite pavement facility can be used in driveways, sidewalks, parking lots, and parks. It is also suitable for rainwater utilization systems in moderate-scale building communities. The entire system is a complete set of equipment products. In a specific project, the amount of rainwater infiltration, storage, discharge, and project scale must be calculated and determined according to the "Technical Specifications for Rainwater Utilization Engineering in Buildings and Residential Areas".

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

1. The design principle of the present invention is simple, and the construction is convenient. It can not only realize the collection of rainwater, the initial interception of sewage, but also realize the penetration of rainwater, conserve groundwater sources and beautify the surrounding ecological environment, and can also discharge excess rainwater normally, with conventional drainage The drainage function of the pipe; it has multiple energy-saving, environmental protection, low-carbon, and ecological effects, and is suitable for the construction of sponge cities for non-motorized roads such as municipal roads, buildings, and residential areas.

2. Composite pavement facilities can be prefabricated in factories, and the finished modules are standard modules, which improves construction efficiency and can meet the assembly of pavements of different sizes, and is widely used.

3. The intelligent pavement facility coupled with the sponge city function of the present invention can not only realize the initial purification of rainwater, but also realize the infiltration of rainwater, and can also discharge and collect excess rainwater normally. The invention can replace or reduce traditional rainwater pipes, rainwater outlets, and rainwater inspection wells, and use infiltration open ditch to realize rainwater collection and discharge, reduce the traditional rainwater inspection wells on the road surface, and improve the landscape effect of the road surface in the building community; reduce traditional deep-buried rainwater pipes, reduce It reduces the difficulty of laying the outdoor pipe network; the seepage ditch is easy to clean and manage, and avoids the harm caused by the blockage of traditional rainwater pipes.

The specific implementation described above has further described the purpose, technical solutions and beneficial effects of the application in detail. It should be understood that the above description is only a specific implementation of the application, and is not intended to limit the scope of the application. Scope of protection: All modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims (10)

1. A compound pavement facility, characterized in that it comprises: A first road surface (1), the first road surface (1) is impermeable; a second road surface (2), located on one side of the first road surface (1); a gravel layer (3), the gravel layer (3) is located below the second road surface (2), capable of storing and infiltrating rainwater; a linear drainage structure, the linear drainage structure is arranged between the first road surface (1) and the second road surface (2), and is configured to collect water on the first road surface (1) and the second road surface (2) rainwater, and the collected rainwater is introduced into the gravel layer (3), and the rainwater in the gravel layer (3) infiltrates into the soil layer. 2. The compound pavement facility according to claim 1, characterized in that, the linear drainage structure comprises a hollow curb (6), and the hollow curb (6) has a drainage space (6-1), a water inlet ( 6-2) and the first water seepage hole (6-3), 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 the rainwater inlet of the linear drainage structure, and the drainage space (6-1) is the drainage channel of the linear drainage structure; the first seepage hole (6-3 ) is located below the water inlet (6-2) and communicates with the gravel layer (3). 3. The compound pavement facility according to claim 2, characterized in that, the first pavement (1) is lower than the second pavement (2), and the top of the hollow curb (6) is in contact with the second pavement (2). The top faces of the two road surfaces (2) are flat. 4. The composite pavement facility according to any one of claims 1 to 3, characterized in that a plurality of hollow curbstones (6) are arranged in combination to form the linear drainage structure; Wherein, 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 communicates with the municipal pipeline; The second overflow port communicates with each of the hollow curbstones (6) through a main overflow pipeline parallel to the linear drainage structure, so that in the case where a part of the hollow curbstone (6) is blocked Rainwater adaptively overflows from the hollow curbstone (6) at the non-silting place. 5. The compound pavement facility according to claim 4, characterized in that, the drainage space (6-1) is provided with a lighting device (7) and/or a mist system, and the water inlet is also used as a light-transmitting hole and and fog holes. 6. The compound pavement facility according to claim 5, characterized in that, a backwash pipe (9) is provided in the drainage space (6-1), and the backwash pipe (9) is used to flush the drainage The bottom wall and the side wall of the space (6-1); The backwashing pipe (9) is connected with a washing power source and a backwashing controller, and the backwashing controller is configured to control the backwashing operation. 7. The composite pavement facility according to claim 6, further comprising a water storage area, the rainwater infiltrated in the gravel layer (3) partially flows to the water storage area for storage, and the water storage area The filtered water is communicated with the backwash pipe (9). 8. The compound pavement facility according to claim 1, characterized in that at least one of the first pavement (1) and the second pavement (2) is assembled from a plurality of pavement modules, the The pavement modules are prefabricated structures. 9. The composite pavement facility according to claim 1, characterized in that, the linear drainage structure has a rainwater inlet, a drainage channel and a seepage inspection well (4), and the rainwater inlet is for rainwater to flow into the drainage channel, and the The upper part of the seepage inspection well (4) communicates with the drainage channel, and the lower part of the seepage inspection well (4) communicates with the gravel layer (3); The penetration inspection well (4) is provided with a dirt interception frame (5) for filtering rainwater flowing into the penetration inspection well (4); The dirt intercepting frame (5) is adapted to the mechanical operation of municipal garbage transport vehicles. 10. The composite pavement facility according to claim 1, wherein the linear drainage structure comprises a drainage ditch, the mouth of the drainage ditch is a rainwater inlet, and a second seepage hole is arranged on the side wall of the drainage ditch , the drainage ditch is also connected with an aqueduct, and both the second seepage hole and the aqueduct are in communication with the gravel layer (3); Alternatively, the linear drainage structure includes hollow curbstones (6) and drains, and the hollow curbstones (6) and drains are arranged alternately.

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