CN113106803A - Water-permeable pavement combined pavement structure and pavement method - Google Patents

Water-permeable pavement combined pavement structure and pavement method Download PDF

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Publication number
CN113106803A
CN113106803A CN202110393076.5A CN202110393076A CN113106803A CN 113106803 A CN113106803 A CN 113106803A CN 202110393076 A CN202110393076 A CN 202110393076A CN 113106803 A CN113106803 A CN 113106803A
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permeable
pavement
permeable layer
layer
unit
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CN113106803B (en
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李茂林
赵昕
李建业
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China Architecture Design and Research Group Co Ltd
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China Architecture Design and Research Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00Pavings made of prefabricated single units
    • E01C5/04Pavings made of prefabricated single units made of bricks
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00Details of pavings
    • E01C11/22Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
    • E01C11/224Surface drainage of streets
    • E01C11/225Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00Details of pavings
    • E01C11/22Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
    • E01C11/224Surface drainage of streets
    • E01C11/227Gutters; Channels ; Roof drainage discharge ducts set in sidewalks

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

The utility model relates to a permeable pavement combined pavement structure and a paving method, wherein the pavement structure comprises a semi-permeable waterway unit and a permeable pavement unit which are paved in parallel, the semi-permeable waterway unit and the permeable pavement unit respectively comprise a first permeable layer, a second permeable layer and a third permeable layer which are paved from top to bottom, the third permeable layer of the semi-permeable waterway unit is paved on an original foundation, and a fourth permeable layer is also paved between the third permeable layer of the permeable pavement unit and the original foundation; wherein, the water permeability of first permeable bed, second permeable bed, third permeable bed, fourth permeable bed strengthens in proper order, and the third permeable bed of semi-permeable pavement unit communicates with the fourth permeable bed of permeable pavement unit. The invention has the advantages of simple structure, simple construction, small workload and low cost, and can realize the reutilization of rainwater resources.

Description

Water-permeable pavement combined pavement structure and pavement method
Technical Field
The patent belongs to the technical field of permeable pavement, and particularly relates to a permeable pavement combined pavement structure and a pavement method.
Background
The water resource of China is characterized by being overall rich and small in occupied amount. In many areas, the situation of water shortage or water quality type water shortage exists. A large amount of surface pollutants are carried by rainwater in the processes of falling and collecting, and rivers are seriously polluted. Meanwhile, rainwater is a non-traditional water resource, rainwater infiltration can conserve underground water resources, rainwater recycling can make up for partial water resource shortage, and non-point source pollution of rivers can be reduced. Since the release of the technical guideline for sponge city construction, the construction of sponge city has been raised in China. The ultimate goal of sponge city construction is rain flood management, the comprehensive control goals of the sponge city construction include total rainwater amount control, rainwater resource utilization, rainwater pollution control and peak reduction, and the realization of the goals depends on implementation of low-impact development technology.
At present, permeable pavement is a emerging city form of mating formation, is applied to surface course, basic unit through adopting the higher material of void fraction to guarantee under the prerequisite of road surface intensity and durability, make the rainwater can get into shop front structure smoothly inside, through the basic unit that has interim water storage ability, directly permeate the soil matrix down or get into shop front inside drain pipe discharge, thereby reach the function such as moisturizing, improve urban environment and improve traffic safety travelling comfort.
However, the existing water-permeable paved road surface is not designed finely, and no matter the size of the water-permeable road surface, a structural mode is adopted, so that either the water permeability is not enough to bear the goal that daily rainfall can infiltrate, or the water permeability is surplus, and waste is caused. The longitudinal structure of the whole pavement of the existing permeable pavement is the same, the construction workload is huge, and the construction cost is high; when the rainfall is large and the infiltration cannot be carried out in time, the problem of road water accumulation still exists, and potential traffic hazards exist; and the filter function of permeable pavement is low, the purification effect on rainwater is poor, the non-point source pollution reduction effect is weak, and the non-point source pollution reduction target meeting the sponge city construction requirement is difficult.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a water permeable pavement combined pavement structure and a paving method, which are used to solve one or more of the problems of the existing water permeable pavement that the implementation is extensive, the function is single, the function of reducing the surface source pollution is limited, and the water resource waste is caused by the direct drainage of the roof rainwater.
The purpose of the invention is realized as follows:
on one hand, the permeable pavement combined pavement structure comprises a semi-permeable pavement unit and a permeable pavement unit which are laid in parallel, wherein the semi-permeable pavement unit and the permeable pavement unit respectively comprise a first permeable layer, a second permeable layer and a third permeable layer which are laid from top to bottom;
wherein, the water permeability of first permeable bed, second permeable bed, third permeable bed, fourth permeable bed strengthens in proper order, and the third permeable bed of semi-permeable pavement unit communicates with the fourth permeable bed of permeable pavement unit.
Furthermore, a plurality of semi-permeable pavement units are continuously paved to form a first side pavement, a plurality of permeable pavement units are continuously paved to form a second side pavement, and the first side pavement and the second side pavement form a bidirectional road.
Furthermore, the first permeable layer is laid by the brick that permeates water of polylith, has the clearance between two adjacent blocks of brick that permeate water.
Furthermore, the area of the gap accounts for 10% -30% of the area of the road surface, and gravel with the particle size of 10mm is filled in the gap.
Further, the second water permeable layer is packed by gravel of a first particle size, the third water permeable layer is packed by gravel of a second particle size, and the fourth water permeable layer is packed by gravel of a third particle size, the second particle size being larger than the first particle size and smaller than the third particle size.
Further, the first particle size is 10mm, the second particle size is 15-40mm, and the third particle size is 40-80 mm.
Furthermore, one side of the permeable pavement unit, which is close to the semi-permeable pavement unit, is provided with a drainage ditch, and the depth of the drainage ditch is equal to the distance from the top surface of the first permeable layer to the top surface of the fourth permeable layer;
a water inlet pipe is laid in the drainage ditch, and a water drainage hole is formed in the top surface of the fourth permeable layer in the drainage ditch.
Furthermore, the second permeable layer, the third permeable layer and the fourth permeable layer are wrapped with permeable geotextiles.
Furthermore, a perforated pipe is laid in the fourth permeable layer and used for leading water stored in the fourth permeable layer out to a water supply point for use.
Further, the perforated pipe is wrapped with a permeable geotextile for preventing the perforation of the perforated pipe from being blocked.
Furthermore, the thickness of the second permeable layer is not less than 50mm, the thickness of the third permeable layer is not less than 100mm, and the thickness of the fourth permeable layer is 300-600 mm.
Furthermore, concrete separation belts are arranged on the outer sides of the semi-permeable pavement units and/or the permeable pavement units, and the thickness of each concrete separation belt is at least larger than that of the first permeable layer.
Further, the gradient of the adjacent road surface was 2%.
On the other hand, the paving method of the water permeable paving combined pavement structure is also provided, and comprises the following steps:
determining the widths of the semi-permeable pavement unit and the thicknesses of the first permeable layer, the second permeable layer, the third permeable layer and the fourth permeable layer according to pavement design and foundation conditions;
screening gravels according to the ranges of the first particle size, the second particle size and the third particle size, and wrapping the gravels with the first particle size into a second water-permeable layer, wrapping the gravels with the second particle size into a third water-permeable layer and wrapping the gravels with the third particle size into a fourth water-permeable layer by using permeable geotextile;
excavating a first pavement space and a second pavement space, and sequentially paving a third permeable layer, a second permeable layer and a first permeable layer in the first pavement space from bottom to top to finish the paving of the semi-permeable waterway surface unit; lay fourth permeable bed, third permeable bed, second permeable bed and first permeable bed in proper order in the space of paving by the bottom up at the second, reserve when laying and establish the escape canal, escape canal and fourth permeable bed intercommunication to lay the inlet tube in the escape canal, accomplish the laying of permeable pavement unit.
Furthermore, a perforated pipe is laid inside the fourth permeable layer and connected with a drain pipe, and the drain pipe is connected with a ground water consumption point through a water pumping device.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
a) the invention provides a permeable pavement combined pavement structure, which is divided into a semi-permeable pavement unit and a permeable pavement unit, wherein the two parts of pavements have different water storage and drainage capacities, and the two parts of pavement permeable layers are communicated underground, when precipitation occurs, rainwater falling on the semi-permeable pavement unit enters a third permeable layer after being filtered by a first permeable layer and a second permeable layer, and the rainwater in the third permeable layer of the semi-permeable pavement unit overflows into the fourth permeable layer of the permeable pavement unit along with continuous infiltration of rainwater because the third permeable layer of the semi-permeable pavement unit is communicated with the fourth permeable layer of the permeable pavement unit, so that the rainwater is prevented from overflowing the top surface of the semi-permeable pavement unit, and the filtered rainwater is stored in the fourth permeable layer of the permeable pavement unit in a centralized manner, and the drainage requirement of large rainfall can be met.
b) The permeable pavement combined pavement structure provided by the invention has the advantages that the rainwater filtering effect of the multi-stage permeable layers is good, the filtered rainwater is stored in the fourth permeable layer to reach the recycling standard of domestic miscellaneous water, the perforated pipes are laid in the fourth permeable layer, so that the rainwater can be conveniently and uniformly discharged and used at water supply points, and the rainwater resource is fully utilized.
c) According to the permeable pavement combined pavement structure provided by the invention, the communication structure between the semi-permeable waterway surface unit and the permeable pavement unit is adopted, namely the semi-permeable waterway surface unit is communicated with the permeable pavement unit through the drainage ditch, and the water inlet pipe is laid in the drainage ditch, so that not only can rainwater on the pavement be received, but also accumulated water on the pavement is reduced; can also receive rainwater coming down from the roof; the rainwater of the semi-permeable waterway surface unit can be guided into the permeable pavement unit to be infiltrated together, so that the manufacturing cost is reduced.
d) The paving method of the permeable pavement combined pavement structure provided by the invention divides the pavement structure into two parts for respective construction, has simple construction and low cost, and overcomes the defects of huge construction workload, high construction cost and incapability of realizing rainwater resource reutilization of the existing permeable pavement.
e) According to the paving method of the permeable pavement combined pavement structure, the second permeable layer, the third permeable layer and the fourth permeable layer are wrapped into the square structure by the permeable geotextile, so that the construction is convenient, meanwhile, the soil can be prevented from permeating into the gravel layer to influence the porosity and permeability of the gravel layer, and meanwhile, the stability of the pavement structure can be ensured.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present specification, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic plan view of a water permeable pavement composite pavement structure of the present invention;
FIG. 2 is a schematic longitudinal sectional view of the water permeable pavement composite pavement structure of the present invention;
FIG. 3 is a schematic longitudinal sectional view of the water permeable pavement combined pavement structure of the present invention;
fig. 4 is a schematic view of the connection of the perforated pipe and the drain pipe of the present invention.
Reference numerals:
1-a semi-permeable waterway unit; 2-permeable pavement units; 3-a first water permeable layer; 4-a second water permeable layer; 5-a third water permeable layer; 6-a fourth water permeable layer; 7-undisturbed foundation; 8-gravel packing; 9-a drainage ditch; 10-a water inlet pipe; 11-a water drainage hole; 12-a concrete division strip; 13-adjacent pavement; 14-permeable geotextile; 15-perforated pipes; 16-a drain pipe.
Detailed Description
In order to make the objects, 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 with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.
A specific embodiment of the present invention, as shown in fig. 1 to 3, discloses a permeable pavement combined pavement structure, comprising a semi-permeable pavement unit 1 and a permeable pavement unit 2 which are laid side by side, wherein a plurality of semi-permeable pavement units 1 are continuously laid to form a first side pavement, a plurality of permeable pavement units 2 are continuously laid to form a second side pavement, and the first side pavement and the second side pavement form a bidirectional pavement; the semi-permeable pavement unit 1 and the permeable pavement unit 2 respectively comprise a first permeable layer 3, a second permeable layer 4 and a third permeable layer 5 which are laid from top to bottom, the third permeable layer 5 of the semi-permeable pavement unit 1 is laid on an original foundation 7, and a fourth permeable layer 6 is also laid between the third permeable layer 5 of the permeable pavement unit 2 and the original foundation 7; wherein, the water permeability of first permeable stratum 3, second permeable stratum 4, third permeable stratum 5, fourth permeable stratum 6 strengthens in proper order, and the third permeable stratum 5 of semi-permeable waterway unit 1 communicates with the fourth permeable stratum 6 of permeable pavement unit 2.
When rainfall occurs, rainwater permeates vertically downwards, and rainwater falling on the permeable pavement unit 2 enters the fourth permeable layer 6 after being filtered by the first permeable layer 3, the second permeable layer 4 and the third permeable layer 5; the rainwater that falls on semi permeable pavement unit 1, through first permeable stratum 3, second permeable stratum 4 filters the back and gets into in the third permeable stratum 5, because the third permeable stratum 5 of semi permeable pavement unit 1 and permeable pavement unit 2's fourth permeable stratum 6 intercommunication, along with the continuous infiltration of rainwater, rainwater in semi permeable pavement unit 1's the third permeable stratum 5 overflows to permeable pavement unit 2's fourth permeable stratum 6 in, in order to prevent that the rainwater from overflowing semi permeable pavement unit 1's top surface, through filterable rainwater centralized storage in permeable pavement unit 2's fourth permeable stratum 6, be convenient for unified discharge utilization, and this road surface structure is convenient for be under construction, construction cost reduces.
Since the roof rainwater is considered as a rainwater resource with better water quality, if the roof rainwater is directly discharged into the municipal pipe network, the rainwater resource is wasted, and the peak load of the rainwater pipe network is increased; if the waste water is directly dispersed to the ground, the waste water is polluted by ground pollutants, and the waste water needs to be purified again, which is unreasonable. Therefore, by combining the permeation function of the permeable pavement, clean roof rainwater can be introduced into the permeable pavement structure with a large area through the introducing pipe, and then is further treated and then is infiltrated or collected for recycling.
In a preferred embodiment of this embodiment, one side of the permeable pavement unit 2 close to the semi-permeable pavement unit 1 is provided with a drainage ditch 9, the depth of the drainage ditch 9 is equal to the distance from the top surface of the first permeable layer 3 to the top surface of the fourth permeable layer 6, because the infiltration speed of rainwater is slower, a water inlet pipe 10 is laid in the drainage ditch 9 for collecting the rainwater on the roof to purify the infiltration to the place, and the top surface of the fourth permeable layer 6 in the drainage ditch 9 is provided with a drainage hole 11. When the rain is large, part of roof rainwater can enter the structural layer of the permeable pavement combined pavement through the water inlet pipe 10 and the drainage ditch, and the drainage holes are used as infiltration channels, so that the infiltration speed is increased.
An optional implementation mode of this embodiment, first permeable bed 3 adopts the permeable pavement, preferably adopts the brick that permeates water, first permeable bed 3 is laid by the polylith brick that permeates water, has the clearance between two adjacent blocks of bricks that permeate water, and the clearance area accounts for 10% -30% of road surface area, and this parameter setting increases the permeability under the condition of guaranteeing road surface structural stability.
Although the brick that permeates water has certain water permeability, can accelerate the infiltration of water for traditional brick to reduce the deposit of ponding, nevertheless because there is the clearance between the brick that permeates water, long-time the use can make and persist impurity between the clearance, influence water permeability. Therefore, gravel packs 8 are arranged in gaps among the water permeable bricks, particularly gravel with the particle size of 10mm is filled in the gaps, so that the gaps are prevented from being filled with sundries, and the water permeability of the water permeable bricks is guaranteed.
In an alternative embodiment of this embodiment, the second water permeable layer 4 is packed with gravel of a first size, the third water permeable layer 5 is packed with gravel of a second size, and the fourth water permeable layer 6 is packed with gravel of a third size, the second size being larger than the first size and smaller than the third size. The permeable layer is not doped with other filtering materials, so that the filtering speed is prevented from being influenced, and in addition, gravel is the most common building material, so that the construction burden is not increased, the material source is wide, and the cost is low.
Furthermore, the first particle size is 10mm, the second particle size is 15-40mm, and the third particle size is 40-80mm, and the parameter setting not only ensures the filtering effect, but also has good filtering effect.
In this embodiment, permeable pavement unit 2's first permeable stratum 3, second permeable stratum 4, third permeable stratum 5 are the same with semi-permeable pavement unit 1's first permeable stratum 3, second permeable stratum 4, third permeable stratum 5's thickness, the construction of being convenient for.
Considering that the thickness and the particle diameter of different permeable layers influence the steadiness and the filterability on ground, the thickness of second permeable layer 4 is not less than 50mm, the thickness of third permeable layer 5 is not less than 100mm, the thickness of fourth permeable layer 6 is 300-600mm, and this thickness parameter combines the particle diameter parameter design of gravel, not only can promote ground steadiness and filterability, can also make the fourth permeable layer have sufficient rainwater storage space, guarantees the reliability of road surface drainage performance.
In an optional implementation manner of this embodiment, the second permeable layer 4, the third permeable layer 5, and the fourth permeable layer 6 are all wrapped with permeable geotextiles 14, and on one hand, the permeable geotextiles 14 can prevent soil in the original soil from entering a gravel layer to block a system, which leads to poor filtering and permeation effects, and simultaneously ensure that water can permeate into the original soil to permeate downwards to conserve a water source; on the other hand, utilize permeable type geotechnological cloth to wrap up into square structure with second permeable bed, third permeable bed and fourth permeable bed, convenient construction can also guarantee pavement structure's stability simultaneously.
In order to realize the reuse of rainwater resources, a perforated pipe 15 is laid inside the fourth permeable layer 6, the perforated pipe 15 is connected with a drain pipe 16, as shown in fig. 4, the drain pipe 16 is connected with a ground water consumption point through a pumping device, so that water stored in the fourth permeable layer 6 is led out to the water consumption point for use, and the reuse of rainwater resources is realized.
Further, the perforated pipe 15 is wrapped with a permeable geotextile for preventing the clogging of the perforated pipe 15.
In this embodiment, a concrete dividing strip 12 is provided outside the semi-permeable pavement unit 1 and/or the permeable pavement unit 2.
For example, as shown in fig. 1, if the border of the left semi-permeable pavement unit 1 is a building side, the thickness of the left concrete partition 12 is greater than the sum of the thicknesses of the first permeable layer 3, the second permeable layer 4 and the third permeable layer 5, that is, the concrete partition 12 is laid against the edge of the interlayer permeable layer, the concrete partition 12 is directly laid on the undisturbed foundation 7, the top surface of the concrete partition 12 is flush with the surface of the first permeable layer 3, and the concrete partition 12 with the thickness can effectively prevent rainwater from laterally permeating through the permeable layer, so as to avoid affecting the building.
If the place of the right side permeable pavement unit 2 is connected to other roads or greenbelts, the thickness of the concrete partition strip 12 on the right side is at least larger than that of the first permeable layer 3, so that the sides of the first permeable layer 3 to the fourth permeable layer 6 are not required to be blocked, and rainwater can permeate from the side of the second permeable layer 4 or the third permeable layer 5 to flow out. Of course, the concrete strips 12 can also completely block the side edges of the first to fourth permeable layers 3-6, that is, the thickness of the concrete strips 12 is greater than the sum of the thicknesses of the first permeable layer 3, the second permeable layer 4, the third permeable layer 5 and the fourth permeable layer 6, the concrete strips 12 on the right side are laid on the original foundation 7, the top surface of the concrete strips 12 is flush with the surface of the first permeable layer 3, and rainwater can only seep downwards but not laterally seep.
An optional implementation of this embodiment, the periphery of concrete median 12 is for closing on road surface 13, and the slope that closes on road surface 13 is 2%, and the rainwater on the road surface of being convenient for in time drains away, prevents surface gathered water when rainfall is big.
It should be noted that, in this embodiment, both the semi-permeable pavement unit 1 and the permeable pavement unit 2 may be used independently or in combination, and in particular, the two combinations of the "permeable pavement unit 2+ the permeable pavement unit 2" and the "semi-permeable pavement unit 1+ the permeable pavement unit 2" are used.
For the road surface with low original soil permeability, the road surface structure of the permeable road surface unit 2+ the permeable road surface unit 2 is adopted, so that the water permeability is good, the underground water storage space is large, and the water accumulation on the road surface is effectively prevented.
For the road surface with higher original soil permeability, a combined road surface structure of the semi-permeable waterway surface unit 1 and the semi-permeable waterway surface unit 1 can be adopted, so that the construction cost is low and the construction is convenient; the road surface structure of the semi-permeable pavement unit 1+ the permeable pavement unit 2 'is preferably adopted, the semi-permeable pavement unit is suitable for the pavement which can also meet the permeation requirement through semi-permeation, and the manufacturing cost is low compared with the road surface structure of the permeable pavement unit 2+ the permeable pavement unit 2'.
The embodiment also discloses a paving method of the permeable pavement combined pavement structure, the combined pavement structure adopts two combinations of the semi-permeable pavement unit 1 and the permeable pavement unit 2, and the paving method comprises the following steps:
the method comprises the following steps: determining the widths of the semi-permeable pavement units 1 and the permeable pavement units 2 and the thicknesses of the first permeable layer 3, the second permeable layer 4, the third permeable layer 5 and the fourth permeable layer 6 according to pavement design and foundation conditions;
step two: screening gravels according to the ranges of the first particle size, the second particle size and the third particle size, and wrapping the gravels with the first particle size into a second water-permeable layer 4, wrapping the gravels with the second particle size into a third water-permeable layer 5 and wrapping the gravels with the third particle size into a fourth water-permeable layer 6 by using a permeable geotextile 14;
step three: excavating a first pavement space and a second pavement space, and paving a third permeable layer 5, a second permeable layer 4 and a first permeable layer 3 in the first pavement space from bottom to top to finish the paving of the semi-permeable pavement unit 1; lay fourth permeable bed 6, third permeable bed 5, second permeable bed 4 and first permeable bed 3 in proper order in the space of second mating formation from bottom to top, reserve when laying and establish escape canal 9, escape canal 9 communicates with fourth permeable bed 6 to lay the inlet tube 10 that is used for collecting the roofing rainwater in escape canal 9, accomplish laying of permeable pavement unit 2.
In the second step, a perforated pipe 15 is laid inside the fourth permeable layer 6, and the perforated pipe 15 is connected with a drain pipe 16; the drain pipe 16 is connected to a ground water point through a pumping device.
Compared with the prior art, the permeable pavement combined pavement structure and the pavement method provided by the embodiment at least have the following beneficial effects:
1. the pavement structure is divided into two parts for construction respectively, the two parts of pavements have different water storage and drainage capacities, the two parts of pavement permeable layers are communicated underground, when precipitation occurs, rainwater falling on the semi-permeable waterway surface unit enters the third permeable layer after being filtered by the first permeable layer and the second permeable layer, as the third permeable layer of the semi-permeable pavement unit is communicated with the fourth permeable layer of the permeable pavement unit, the rainwater in the third permeable layer of the semi-permeable pavement unit overflows into the fourth permeable layer of the permeable pavement unit along with the continuous infiltration of the rainwater, the rainwater is prevented from overflowing the top surface of the semi-permeable pavement unit, the filtered rainwater is stored in the fourth permeable layer of the permeable pavement unit in a centralized manner, the drainage requirement of large rainfall can be met, the construction is simple, the cost is low, and the defects that the construction workload is huge, the construction cost is high and the rainwater resource cannot be recycled in the existing permeable pavement are overcome.
2. The rainwater filter effect on multistage permeable stratum is good, and the rainwater reservoir after filtering lays the perforated pipe in fourth permeable stratum, is convenient for unified discharge confession water spot uses, make full use of rainwater resource in fourth permeable stratum.
3. Utilize infiltration type geotechnological cloth to wrap up into square structure with second permeable bed, third permeable bed and fourth permeable bed, convenient construction can also prevent simultaneously that earth infiltration from getting into the gravel layer, influences the porosity and the permeability of gravel layer, can also guarantee road surface structure's stability simultaneously.
4. The semi-permeable water pavement unit can play a role in preliminarily reducing pollution, the permeable pavement unit is suitable for a pavement which has high requirement on rainwater drainage quality and low recycling requirement or soil permeability, equivalent to soil replacement at the bottommost layer, the penetration rate is increased, and the three-layer structure of the second permeable layer, the third permeable layer and the fourth permeable layer can effectively purify rainwater to reach the recycling standard of domestic miscellaneous water.
5. The communication structure between the semi-permeable waterway surface unit and the permeable pavement unit is characterized in that the semi-permeable waterway surface unit 1 is communicated with the permeable pavement unit through a drainage ditch, and a water inlet pipe is laid in the drainage ditch, so that the semi-permeable waterway surface unit can receive rainwater on a pavement and reduce water accumulated on the pavement; can also receive rainwater coming down from the roof; the rainwater of the semi-permeable waterway surface unit can be guided into the permeable pavement unit to be infiltrated together, so that the manufacturing cost is reduced.
The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1.一种透水铺装组合路面结构,其特征在于,包括并列铺设的半透水路面单元(1)和透水路面单元(2),半透水路面单元(1)和透水路面单元(2)均包括由上向下铺设的第一透水层(3)、第二透水层(4)、第三透水层(5),半透水路面单元(1)的第三透水层(5)铺设于原状基础(7)上,透水路面单元(2)的第三透水层(5)与原状基础(7)之间还铺设有第四透水层(6);1. A permeable pavement composite pavement structure, characterized in that it comprises a semi-permeable pavement unit (1) and a permeable pavement unit (2) laid side by side, and the semi-permeable pavement unit (1) and the permeable pavement unit (2) both comprise The first permeable layer (3), the second permeable layer (4), and the third permeable layer (5) laid from top to bottom, and the third permeable layer (5) of the semi-permeable pavement unit (1) are laid on the original foundation ( 7) On, a fourth permeable layer (6) is also laid between the third permeable layer (5) of the permeable pavement unit (2) and the original foundation (7); 其中,第一透水层(3)、第二透水层(4)、第三透水层(5)、第四透水层(6)的透水性依次增强,半透水路面单元(1)的第三透水层(5)与透水路面单元(2)的第四透水层(6)连通。The water permeability of the first permeable layer (3), the second permeable layer (4), the third permeable layer (5), and the fourth permeable layer (6) are sequentially enhanced, and the third permeable layer of the semi-permeable pavement unit (1) The layer (5) communicates with the fourth permeable layer (6) of the permeable pavement unit (2). 2.根据权利要求1所述的透水铺装组合路面结构,其特征在于,所述第一透水层(3)由多块透水砖铺设,相邻两块透水砖之间具有间隙。2 . The permeable pavement combined pavement structure according to claim 1 , wherein the first permeable layer ( 3 ) is laid by a plurality of permeable bricks, and there is a gap between two adjacent permeable bricks. 3 . 3.根据权利要求2所述的透水铺装组合路面结构,其特征在于,所述间隙的面积占路面面积的10%-30%,所述间隙内充填粒径10mm的砾石。3 . The permeable pavement combined pavement structure according to claim 2 , wherein the area of the gap accounts for 10%-30% of the pavement area, and the gap is filled with gravel with a particle size of 10 mm. 4 . 4.根据权利要求2或3所述的透水铺装组合路面结构,其特征在于,所述第二透水层(4)由第一粒径的砾石堆砌,所述第三透水层(5)由第二粒径的砾石堆砌,所述第四透水层(6)由第三粒径的砾石堆砌,第二粒径大于第一粒径且小于第三粒径。4. The permeable pavement composite pavement structure according to claim 2 or 3, characterized in that the second permeable layer (4) is made of gravel of the first particle size, and the third permeable layer (5) is made of The second particle size is piled up with gravel, and the fourth permeable layer (6) is piled up with the third particle size gravel, and the second particle size is larger than the first particle size and smaller than the third particle size. 5.根据权利要求4所述的透水铺装组合路面结构,其特征在于,第一粒径为10mm,第二粒径为15-40mm,第三粒径为40-80mm。5 . The permeable pavement composite pavement structure according to claim 4 , wherein the first particle size is 10 mm, the second particle size is 15-40 mm, and the third particle size is 40-80 mm. 6 . 6.根据权利要求5所述的透水铺装组合路面结构,其特征在于,第二透水层(4)的厚度不小于50mm、第三透水层(5)的厚度不小于100mm、第四透水层(6)的厚度为300-600mm。6. The permeable pavement composite pavement structure according to claim 5, wherein the thickness of the second permeable layer (4) is not less than 50mm, the thickness of the third permeable layer (5) is not less than 100mm, and the thickness of the fourth permeable layer is not less than 100mm. (6) The thickness is 300-600mm. 7.根据权利要求1所述的透水铺装组合路面结构,其特征在于,透水路面单元(2)靠近半透水路面单元(1)的一侧设有排水沟(9),排水沟(9)的深度等于第一透水层(3)的顶面至第四透水层(6)的顶面距离;7. The permeable pavement composite pavement structure according to claim 1, wherein the permeable pavement unit (2) is provided with a drainage ditch (9) on one side close to the semi-permeable pavement unit (1), and the drainage ditch (9) The depth is equal to the distance from the top surface of the first permeable layer (3) to the top surface of the fourth permeable layer (6); 排水沟(9)内铺设有进水管(10)。A water inlet pipe (10) is laid in the drainage ditch (9). 8.根据权利要求1所述的透水铺装组合路面结构,其特征在于,第二透水层(4)、第三透水层(5)、第四透水层(6)外均包裹有渗透型土工布(14)。8. The permeable pavement composite pavement structure according to claim 1, wherein the second permeable layer (4), the third permeable layer (5), and the fourth permeable layer (6) are all wrapped with permeable geotechnical engineering cloth (14). 9.根据权利要求8所述的透水铺装组合路面结构,其特征在于,所述第四透水层(6)的内部敷设有穿孔管(15),所述穿孔管(15)外包裹有渗透型土工布(14)。9 . The permeable pavement composite pavement structure according to claim 8 , wherein a perforated pipe ( 15 ) is laid inside the fourth permeable layer ( 6 ), and the perforated pipe ( 15 ) is wrapped with permeable pipes ( 15 ). 10 . type geotextile (14). 10.一种透水铺装组合路面结构的铺装方法,其特征在于,包括如下步骤:10. A paving method for a permeable pavement composite pavement structure, characterized in that it comprises the steps: 根据路面设计以及地基情况确定半透水路面单元(1)和透水路面单元(2)的宽度以及第一透水层(3)、第二透水层(4)、第三透水层(5)、第四透水层(6)的厚度;Determine the width of the semi-permeable pavement unit (1) and the permeable pavement unit (2), as well as the width of the first permeable layer (3), the second permeable layer (4), the third permeable layer (5), the fourth The thickness of the permeable layer (6); 按照第一粒径、第二粒径、第三粒径范围进行砾石筛分,利用渗透型土工布(14)将第一粒径的砾石包裹为第二透水层(4)、将第二粒径的砾石包裹为第三透水层(5)、将第三粒径的砾石包裹为第四透水层(6);Gravel is sieved according to the range of the first particle size, the second particle size and the third particle size, and the first particle size gravel is wrapped into a second permeable layer (4) by using a permeable geotextile (14), and the second The gravel of the diameter is wrapped into the third permeable layer (5), and the gravel of the third particle size is wrapped into the fourth permeable layer (6); 开挖第一铺装空间和第二铺装空间,在第一铺装空间内由下向上依次铺设第三透水层(5)、第二透水层(4)和第一透水层(3)完成半透水路面单元(1)的铺设;在第二铺装空间由下向上依次铺设第四透水层(6)、第三透水层(5)、第二透水层(4)和第一透水层(3),铺设时留设排水沟(9),排水沟(9)与第四透水层(6)连通,并在排水沟(9)内铺设进水管(10),完成透水路面单元(2)的铺设。The first paving space and the second paving space are excavated, and the third permeable layer (5), the second permeable layer (4) and the first permeable layer (3) are laid in sequence from bottom to top in the first paving space. Laying of the semi-permeable pavement unit (1); the fourth permeable layer (6), the third permeable layer (5), the second permeable layer (4) and the first permeable layer ( 3), a drainage ditch (9) is left when laying, the drainage ditch (9) is connected with the fourth permeable layer (6), and a water inlet pipe (10) is laid in the drainage ditch (9) to complete the permeable pavement unit (2) laying.
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* Cited by examiner, † Cited by third party
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DE20305149U1 (en) * 2003-03-28 2003-08-28 HÜBNER-LEE Ernst Hübner e.K., 87752 Holzgünz Drainage structure, especially for parking lots or driveways
JP2006144280A (en) * 2004-11-17 2006-06-08 Taisei Rotec Corp Water retention pavement structure
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