CN113584983A

CN113584983A - Asphalt pavement structure capable of automatically collecting rainwater and construction method

Info

Publication number: CN113584983A
Application number: CN202110860260.6A
Authority: CN
Inventors: 卞佳
Original assignee: Zhangjiagang Jida Municipal Road And Bridge Engineering Co ltd
Current assignee: Zhangjiagang Jida Municipal Road And Bridge Engineering Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-11-02
Anticipated expiration: 2041-07-28
Also published as: CN113584983B

Abstract

The utility model relates to an automatic collect bituminous paving structure of rainwater, including laying the bituminous paving layer at the earth's surface, bituminous paving layer below is equipped with the permeable bed, part the permeable bed passes bituminous paving layer setting, the permeable bed is inside to be inlayed and is equipped with a plurality of pipes of permeating water, the below of permeable bed is equipped with the basic unit, be equipped with the water collection portion in the basic unit, the pipe of permeating water is linked together with the water collection portion, the top of water collection portion flushes with the upper surface of basic unit, the below of basic unit is equipped with the underlayment, the below of underlayment is equipped with the bed course, the bottom of water collection portion is located in the bed course. This application has partial permeable bed and passes the setting of pitch road surface layer, rainwater inflow permeable bed during rainy day, and the intraformational pipe that permeates water absorbs the rainwater and with its transmission to the water-collecting part to collect the rainwater, be convenient for carry out cyclic utilization's effect.

Description

Asphalt pavement structure capable of automatically collecting rainwater and construction method

Technical Field

The application relates to the field of asphalt pavement construction, in particular to an asphalt pavement structure capable of automatically collecting rainwater and a construction method.

Background

Asphalt pavement refers to various types of pavement that are made by incorporating into mineral materials a road asphalt material. The asphalt binder improves the capability of the paving aggregate to resist damage of traveling vehicles and natural factors to the pavement, and enables the pavement to be smooth, less in dust, impermeable and durable. Accordingly, asphalt pavement is one of the most widely used high-grade pavements in road construction.

The existing asphalt pavement is simple in structure, and asphalt is directly paved on a base layer. Because pitch does not possess the ability of permeating water, the road surface easily produces ponding when the rainy day, and ponding can't be got rid of from the road surface fast to lead to unable rainwater to be collected, reach rainwater cyclic utilization's effect.

Disclosure of Invention

In order to solve the problem that asphalt does not have the water permeability, the rainwater cannot be collected, and the rainwater recycling is achieved, the application provides an asphalt pavement structure capable of automatically collecting rainwater and a construction method.

First aspect, the application provides an automatic asphalt pavement structure of collection rainwater adopts following technical scheme:

the utility model provides an automatic collect bituminous paving structure of rainwater, is including laying the bituminous paving layer at the earth's surface, bituminous paving layer below is equipped with the permeable bed, part the permeable bed passes bituminous paving layer setting, the permeable bed is inside to be inlayed and is equipped with a plurality of pipes that permeate water, the below of permeable bed is equipped with the basic unit, be equipped with the water collection portion in the basic unit, the pipe that permeates water is linked together with the water collection portion, the top of water collection portion flushes with the upper surface of basic unit, the below of basic unit is equipped with the subbase, the below of subbase is equipped with the bed course, the bottom of water collection portion is located in the bed course.

Through adopting above-mentioned technical scheme, the setting of pitch pavement layer is passed to partial permeable bed, and rainwater inflow permeable bed during rainy day, the intraformational pipe that permeates water absorbs the rainwater and transmits it to the water-collecting part to collect the rainwater, be convenient for carry out cyclic utilization.

Preferably, the permeable layer comprises a permeable base layer and a permeable surface layer, the permeable base layer is formed by laying coarse aggregate with the thickness of 7-10cm, the permeable surface layer is formed by laying fine aggregate with the thickness of 3-5cm, and the permeable pipe is arranged inside the permeable base layer.

Through adopting above-mentioned technical scheme, the aggregate thickness on the top layer that permeates water is less to can play the stable effect in support road surface, permeate water the pipe and locate the basic unit inside that permeates water, can not influence the support effect on the top layer that permeates water.

Preferably, the water collecting part includes the water storage tank, the pipe of permeating water is linked together with the water storage tank, the both ends of pitch road surface layer all are equipped with the drain tank, the water storage tank be two and with the drain tank one-to-one, wear to be equipped with the drain pipe with the drain tank intercommunication on the water storage tank, the top of drain tank is higher than pitch road surface layer, the opening has been seted up on the drain tank, the opening is located the lateral wall of drain tank protrusion pitch road surface layer.

Through adopting above-mentioned technical scheme, the rainwater of being convenient for to the pipe collection of permeating water is stored in setting up of holding water tank, also can prevent that the rainfall is too big to lead to the drainage box to be irritated full, causes the condition emergence that the rainwater spilt.

Preferably, the top of the permeable layer that passes the pitch pavement layer setting is equipped with the apron, be equipped with a plurality of through-hole on the apron.

Through adopting above-mentioned technical scheme, the setting of apron has improved the planarization on road surface, avoids causing the road surface unevenness by the permeable bed that fine aggregate constitutes, influences normal driving.

Preferably, the top of the pipe of permeating water is equipped with the drainage board, the drainage board inlays and locates the superficial layer of permeating water, a plurality of drainage hole has been seted up on the drainage board, the drainage board is made by the soft foaming granule of polyurethane and the metal particle mixture, be equipped with a plurality of conducting strips on the drainage board.

Through adopting above-mentioned technical scheme, the soft foaming granule of polyurethane absorbs the rainwater and makes self be heated evenly through metal particle, accelerates the evaporation of moisture, carries out the drying to the drainage board.

Preferably, the periphery of the water storage tank is provided with a reinforcing beam, and the top end of the reinforcing beam is flush with the top end of the water storage tank.

Through adopting above-mentioned technical scheme, the stiffening beam structure is firm, can avoid the pressure of each layer of road surface that the water storage tank received too big, and the setting up of stiffening beam has protected the water storage tank to be difficult to by the crushing.

In a second aspect, the present application provides an asphalt pavement construction method for automatically collecting rainwater, which adopts the following technical scheme:

an asphalt pavement construction method for automatically collecting rainwater comprises the following steps:

s1, ramming plain soil layer: removing sundries on the original pavement and flattening soil on the original pavement;

s2, pouring a cushion layer: paving coarse-grained soil on the plain soil layer to form a cushion layer, embedding a water collecting part in the cushion layer and smoothing the upper surface of the cushion layer;

s3, pouring a bottom base layer: after water is sprayed on the gravels with the particle size not larger than 40ram, the wet gravels are paved on the cushion layer to form an underlayer, and the upper surface of the underlayer is smoothed;

s4, pouring a base layer: paving broken stones with the particle size not larger than 30ram on the subbase layer to form a base layer, and enabling the upper surface of the base layer to be flush with the upper surface of the water collecting part;

s5, pouring a water permeable layer: paving 7-10cm thick coarse aggregate on a base layer to form a permeable base layer, leveling the paved coarse aggregate, paving 3-5cm thick fine aggregate to form a permeable surface layer, embedding a plurality of permeable pipes in the permeable base layer, embedding a water filtering plate provided with a conducting sheet in the permeable surface layer, and embedding two drainage boxes at two ends of the permeable pipes in the permeable base layer;

s6, pouring an asphalt pavement layer: mixing asphalt materials and mineral aggregates to form asphalt concrete, paving the asphalt concrete on the permeable layer, flattening by a compactor, continuously paving the asphalt concrete at intervals, and compacting;

s7, pouring a permeable pavement layer: paving fine aggregates with the thickness of 3-5cm between adjacent asphalt pavement layers, placing a cover plate at the top end of the paved fine aggregates, and performing secondary compaction on the asphalt pavement layers through a compactor.

Through adopting above-mentioned technical scheme, the rainwater flows into permeable stratum and is collected by the pipe of permeating water of permeable stratum inside after falling to ground, and the rainwater of collecting is deposited into in the water storage tank, waits for cyclic utilization in the rivers of water storage tank advance the drainage case.

Preferably, the step of laying coarse aggregate with the thickness of 7-10cm on the base layer to form a permeable base layer, laying fine aggregate with the thickness of 3-5cm after floating the laid coarse aggregate to form a permeable surface layer, embedding a plurality of permeable pipes in the permeable base layer, embedding a water filter plate provided with a conducting strip in the permeable surface layer, and embedding two drainage boxes at two ends of each permeable pipe in the permeable base layer comprises: the water filtering plate is prepared by mixing polyurethane soft foaming particles and metal particles, and the proportion of the polyurethane soft foaming particles to the metal particles is regulated and controlled according to the environment.

Through adopting above-mentioned technical scheme, the hydroscopicity of the soft foaming granule of polyurethane is better, and metal particles's heat absorption effect is better, can make the soft foaming granule of polyurethane heat absorption more comprehensive through mixing the soft foaming granule of polyurethane with metal particles, has promoted the efficiency of moisture evaporation.

Preferably, the steps of mixing the bituminous material and the mineral aggregate to form bituminous concrete, laying the bituminous concrete on the water-permeable layer, pressing the bituminous concrete by the compactor, and continuing to lay the bituminous concrete at a distance and compact the bituminous concrete further comprise: and a high-pressure suction fan is arranged on one side of the permeable layer, and is opened when the asphalt concrete is laid, so that harmful gas emitted by the asphalt concrete is sucked by the high-pressure suction fan.

Through adopting above-mentioned technical scheme, asphalt concrete can give off harmful gas, inhales away harmful gas through the high-pressure suction fan and can avoid harmful gas to cause the harm to staff's health, has improved the security of construction.

Preferably, the step of paving fine aggregates with a thickness of 3-5cm between adjacent asphalt pavement layers, placing a cover plate on the top ends of the paved fine aggregates, and performing secondary compaction on the asphalt pavement layers through a compactor further comprises: the asphalt concrete is laid along the length direction of the pavement when being laid, the compactor moves along the length direction of the pavement, and the length of a compression roller of the compactor is smaller than the width of the asphalt concrete.

By adopting the technical scheme, the asphalt concrete laying direction is consistent with the moving direction of the compactor, the condition that the compactor presses the cover plate to cause the cover plate to be crushed can be avoided, and the integrity of the pressing plate is ensured.

In summary, the present application includes at least one of the following beneficial technical effects:

1. rainwater flows into the permeable layer in rainy days, and the permeable pipes in the permeable layer absorb the rainwater and transmit the rainwater to the water collecting part, so that the rainwater is collected and is convenient to recycle;

2. the water filtering plate supported by the soft polyurethane foaming particles and the metal particles in a mixed mode can absorb part of rainwater and enable the water filtering plate to be heated uniformly through the metal particles, evaporation of the absorbed rainwater is accelerated, and therefore the effect of cooling the pavement is achieved.

Drawings

Fig. 1 is a schematic cross-sectional structure view of an asphalt pavement structure for automatically collecting rainwater according to an embodiment of the present application.

Fig. 2 is an overall structure schematic diagram of an asphalt pavement structure capable of automatically collecting rainwater in the embodiment of the present application.

FIG. 3 is a schematic view of the overall structure of a water-permeable plate according to an embodiment of the present application.

Fig. 4 is a schematic flow chart of an asphalt pavement construction method for automatically collecting rainwater according to an embodiment of the present application.

Description of reference numerals: 1. an asphalt pavement layer; 2. a water permeable layer; 21. a water permeable base layer; 22. a water permeable surface layer; 3. a water permeable pipe; 4. a base layer; 5. a water collection part; 51. a water storage tank; 52. a drain tank; 6. an underlayer; 7. a cushion layer; 8. a drain pipe; 9. a port; 10. a cover plate; 11. a through hole; 12. a water filter plate; 13. water filtering holes; 14. a heat conductive sheet; 15. and reinforcing the beam.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an asphalt pavement structure capable of automatically collecting rainwater and a construction method.

Example 1

Referring to fig. 1 and 2, an asphalt pavement structure for automatically collecting rainwater includes a mat layer 7, a sub-base layer 6, a base layer 4, a permeable layer 2, and an asphalt pavement layer 1. The mat 7 is disposed on the original road surface, the mat 7 is composed of coarse earth, and the mat 7 is disposed along the length direction of the road. The surface of bed course 7 is level and smooth, and bed course 7 embeds is equipped with water-collecting part 5. Specifically, the sump portion 5 includes a water storage tank 51 and a reinforcing beam 15, the bottom of the water storage tank 51 is embedded in the bed 7, the reinforcing beam 15 is disposed around the sidewall of the water storage tank 51, and the top end of the reinforcing beam 15 is flush with the top end of the water storage tank 51. The subbase 6 is laid on the upper side of the cushion layer 7, the subbase 6 is composed of crushed stones with the grain diameter not larger than 40ram, and the water storage tank 51 is arranged through the subbase 6. The base course 4 is laid above the subbase 6, the base course 4 is composed of gravels with the grain diameter not larger than 30ram, and the top end of the water storage tank 51 is flush with the upper surface of the base course 4. The reinforcing beam 15 is composed of a plurality of reinforcing bars, the strength of the reinforcing bars is large, and the reinforcing beam 15 composed of the reinforcing bars can relieve the pressure applied to the water storage tank 51 by the peripheral gravels of the water storage tank 51, so that the water storage tank 51 is protected from being easily crushed.

Referring to fig. 1 and 2, the permeable layer 2 is laid on the surface of the base layer 4, and specifically, the permeable layer 2 includes a permeable base layer 21 and a permeable surface layer 22, and the permeable surface layer 22 is laid on the upper surface of the permeable base layer 21. The permeable base layer 21 is formed by paving coarse aggregates with the thickness of 7-10cm, and the permeable surface layer 22 is formed by paving fine aggregates with the thickness of 3-5 cm. The base layer 21 that permeates water is inside to be inlayed and is equipped with the pipe 3 that permeates water, and water storage tank 51 has two, and the both ends of the pipe 3 that permeates water are worn to establish respectively into two water storage tank 51 inside make the pipe 3 that permeates water be linked together with water storage tank 51.

In practice, the gaps between the fine aggregates constituting the permeable surface layer 22 are small, which can improve the stability of the foundation, and the gaps between the coarse aggregates constituting the permeable base layer 21 are large, which facilitates the penetration of rainwater. The water permeable pipe 3 collects rainwater and transmits the collected rainwater to the water storage tank 51, thereby realizing the collection of the rainwater.

Referring to fig. 1 and 3, a water filtering plate 12 is disposed above the water permeable pipe 3, the water filtering plate 12 is embedded inside the water permeable surface, and a plurality of water filtering holes 13 are disposed on the water filtering plate 12. Specifically, the strainer 12 is made by mixing soft polyurethane foam particles and metal particles, a strainer at the bottom end of the strainer 12 is located right below a strainer hole 13 on the strainer 12, and a plurality of heat-conducting fins 14 are arranged at the top end of the strainer 12. The polyurethane soft foaming particles have the effects of absorbing rainwater and evaporating the rainwater, and the metal particles have good thermal conductivity.

In practice, the water filtering plate 12 allows rainwater to flow through the water filtering holes 13 to the upper side of the water filtering pipe, so that the water filtering pipe can collect rainwater conveniently. The water filtering plate 12 absorbs rainwater and makes itself heated evenly through the metal particles, thereby accelerating the evaporation of the rainwater on the surface of the water filtering plate 12 and avoiding the rainwater from accumulating on the surface of the water filtering plate 12 to influence the structure of the permeable layer 2. The heat conductive sheet 14 absorbs heat of the asphalt pavement to accelerate evaporation of rainwater.

Referring to fig. 1 and 2, an asphalt pavement layer 1 is laid on the top of a permeable layer 2, the asphalt pavement layer 1 is arranged along the length direction of the pavement, a plurality of gaps are arranged along the width direction of the pavement, part of the permeable layer 2 penetrates through the asphalt pavement layer 1 and is arranged in the gaps, and the permeable layer 2 in the gaps is formed by laying fine aggregates with the thickness of 3-5 cm. Locate the inside permeable layer 2 top in gap and be equipped with apron 10, and seted up a plurality of through-hole 11 on the apron 10, the upper surface of apron 10 flushes with the upper surface of pitch road surface layer 1 mutually.

Referring to fig. 1 and 2, both ends of the asphalt pavement layer 1 are provided with drain tanks 52, and the upper surfaces of the drain tanks 52 are higher than the upper surface of the asphalt pavement layer 1. The two drain tanks 52 correspond to the two water storage tanks 51 one by one, and the drain pipes 8 communicating with the corresponding water storage tanks 51 are formed through the drain tanks 52. The side wall of the drainage tank 52 close to the asphalt pavement layer 1 is provided with a through hole 9, and the through hole 9 is positioned at the part of the side wall higher than the asphalt pavement layer 1. In operation, a part of rainwater on the road surface flows into the drain tank 52 through the through port 9, and another part of rainwater on the road surface passes through the water permeable layer 2 to be absorbed by the water permeable pipe 3 to flow into the water storage tank 51, thereby collecting the rainwater.

The implementation principle of the embodiment 1 is as follows: the rainwater sees through the permeable bed 2 between the adjacent asphalt concrete layer and flows to strainer plate 12 department, and the rainwater flows to the pipe 3 of permeating water through strainer plate 12's drainage hole 13, and the pipe 3 of permeating water transmits the rainwater of collecting to inside the reservoir 51 to the realization is to the collection of rainwater.

Example 2

Referring to fig. 4, a construction method of an asphalt pavement automatically collecting rainwater includes the steps of:

s1, ramming plain soil layer: the weeds on the original pavement are removed by a weeding machine, the pits of the original pavement are filled with soil, and the soil on the original pavement is flattened by a compactor.

S2, pouring the cushion layer 7: coarse soil is laid on the plain soil layer to form a mat 7, the water collection parts 5 are placed on top of the plain soil layer before the coarse soil is laid, so that the bottom ends of the water collection parts 5 are embedded in the mat 7, and the mat 7 is flattened by a compactor.

S3, pouring the bottom base layer 6: water is sprayed on crushed stones having a particle size of not more than 40ram and the sprayed crushed stones are laid on the upper surface of the mat 7 to form the base layer 4, and the upper surface of the subbase layer 6 is flattened by a flattening operation of the subbase layer 6 by a compactor.

S4, pouring the base layer 4: and paving broken stones with the grain size of not more than 30ram on the subbase 6 to form the base layer 4, wherein the upper surface of the base layer 4 is flush with the upper surface of the water collecting part 5.

S5, pouring the water permeable layer 2: coarse aggregate with the thickness of 7-10cm is paved on the base layer 4 to form a permeable base layer 21, and the permeable pipe 3 is paved in the permeable base layer 21 when the coarse aggregate is paved. Laying fine aggregate with the thickness of 3-5cm on a permeable base layer 21 to form a permeable surface layer 22, embedding and installing a water filtering plate 12 on the permeable surface layer 22 when laying the fine aggregate, enabling water filtering holes 13 on the water filtering plate 12 to be located right above permeable pipes 3, and embedding two drainage boxes 52 located at two ends of the permeable pipes 3 in the permeable base layer 21.

The water filter plate 12 is made by mixing polyurethane soft foaming particles and metal particles, and the proportion of the polyurethane soft foaming particles and the metal particles is regulated and controlled according to the environment. The metal particles have better heat conductivity, and the metal particles can be heated evenly with the soft foaming particles of polyurethane so that the water filtering plate 12 is heated evenly, thereby the evaporation of water content after the soft foaming particles of polyurethane absorb rainwater is accelerated, thereby the water filtering plate 12 is dried to avoid the rainwater on the surface of the water filtering plate 12 to pile up and influence the 2-layer structure of permeating water.

S6, pouring an asphalt pavement layer: mixing and stirring asphalt materials and mineral aggregates to form asphalt concrete, paving the stirred asphalt concrete on the permeable layer 2 along the length direction of the pavement to form an asphalt pavement layer 1, and compacting the asphalt concrete by a compactor; after the compaction is finished, asphalt concrete is continuously paved along the width direction of the pavement at intervals and the length direction of the pavement to form an asphalt pavement layer 1, and the asphalt pavement layer is compacted.

When laying the asphalt concrete, a high-pressure suction fan is arranged on one side of the permeable layer 2, and the high-pressure suction fan is opened when laying the asphalt concrete because the asphalt concrete can emit harmful gas. The high-pressure suction fan absorbs harmful gas emitted by the asphalt concrete, so that the harmful gas is prevented from damaging the bodies of workers, and the construction safety is improved.

S7, pouring a permeable pavement layer: paving fine aggregates with the thickness of 3-5cm between the adjacent asphalt pavement layers 1, placing a cover plate 10 at the top end of the paved fine aggregates, and carrying out secondary compaction on the asphalt pavement layers 1 through a compactor. The fine aggregate laid contacts with the fine aggregate of the water permeable surface layer 22, and both belong to the water permeable surface layer 22.

The direction of asphalt concrete laying is consistent with the direction of movement of the compactor, and the length of the compactor rolls is less than the width of asphalt concrete laying. The compactor will only roll the asphalt concrete layers and will not roll the water permeable layers 2 between adjacent asphalt concrete layers, thereby avoiding the situation that the compactor presses the cover plate 10 to cause the cover plate 10 to be crushed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an automatic collect bituminous paving structure of rainwater which characterized in that: including laying asphalt pavement layer (1) at the earth's surface, asphalt pavement layer (1) below is equipped with permeable bed (2), part permeable bed (2) pass asphalt pavement layer (1) and set up, permeable bed (2) inside inlays and is equipped with a plurality of pipes (3) of permeating water, the below of permeable bed (2) is equipped with basic unit (4), be equipped with water collection portion (5) in basic unit (4), permeate water pipe (3) and water collection portion (5) and be linked together, the top of water collection portion (5) flushes with the upper surface of basic unit (4), the below of basic unit (4) is equipped with subbase (6), the below of subbase (6) is equipped with bed course (7), the bottom of water collection portion (5) is located in bed course (7).

2. The asphalt pavement structure capable of automatically collecting rainwater according to claim 1, wherein: the permeable layer (2) comprises a permeable base layer (21) and a permeable surface layer (22), the permeable base layer (21) is formed by laying coarse aggregate with the thickness of 7-10cm, the permeable surface layer (22) is formed by laying fine aggregate with the thickness of 3-5cm, and the permeable pipe (3) is arranged inside the permeable base layer (21).

3. The asphalt pavement structure capable of automatically collecting rainwater according to claim 1, wherein: water collection portion (5) are including water storage tank (51), it is linked together with water storage tank (51) to permeate water pipe (3), the both ends of pitch road surface layer (1) all are equipped with drain tank (52), water storage tank (51) be two and with drain tank (52) one-to-one, wear to be equipped with drain pipe (8) with drain tank (52) intercommunication on water storage tank (51), the top of drain tank (52) is higher than pitch road surface layer (1), opening (9) have been seted up on drain tank (52), opening (9) are located on the lateral wall of drain tank (52) protrusion pitch road surface layer (1).

4. The asphalt pavement structure capable of automatically collecting rainwater according to claim 1, wherein: pass the top of the permeable layer (2) that pitch pavement layer (1) set up is equipped with apron (10), be equipped with a plurality of through-hole (11) on apron (10).

5. The asphalt pavement structure capable of automatically collecting rainwater according to claim 4, wherein: the top of tub (3) of permeating water is equipped with strainer plate (12), strainer plate (12) inlay and locate permeable surface layer (22), a plurality of drainage hole (13) have been seted up on strainer plate (12), strainer plate (12) are made by the soft foaming granule of polyurethane and metal particle mixture, be equipped with a plurality of conducting strips (14) on strainer plate (12).

6. The asphalt pavement structure capable of automatically collecting rainwater according to claim 1, wherein: the periphery of the water storage tank (51) is provided with a reinforcing beam (15), and the top end of the reinforcing beam (15) is flush with the top end of the water storage tank (51).

7. An automatic collect bituminous paving construction method of rainwater which characterized in that: the method comprises the following steps:

s2, pouring cushion layer (7): paving coarse-grained soil on the plain soil layer to form a cushion layer (7), embedding a water collecting part (5) in the cushion layer (7) and troweling the upper surface of the cushion layer (7);

s3, pouring the bottom base layer (6): after water is sprayed on the gravels with the grain diameter not larger than 40ram, the wet gravels are paved on the cushion layer (7) to form an underlayer (6), and the upper surface of the underlayer (6) is smoothed;

s4, pouring the base layer (4): paving broken stones with the particle size not larger than 30ram on the subbase layer (6) to form a base layer (4), so that the upper surface of the base layer (4) is flush with the upper surface of the water collecting part (5);

s5, pouring a water permeable layer (2): paving 7-10cm thick coarse aggregate on a base layer (4) to form a permeable base layer (21), leveling the paved coarse aggregate, paving 3-5cm thick fine aggregate to form a permeable surface layer (22), embedding a plurality of permeable pipes (3) in the permeable base layer (21), embedding a water filter plate (12) provided with a conductive sheet in the permeable surface layer (22), and embedding two drainage boxes (52) positioned at two ends of the permeable pipes (3) in the permeable base layer (21);

s6, pouring an asphalt pavement layer (1): mixing asphalt materials and mineral aggregates to form asphalt concrete, paving the asphalt concrete on the permeable layer (2), flattening by a compactor, continuously paving the asphalt concrete at intervals, and compacting;

s7, pouring a road surface water permeable layer (2): paving fine aggregates with the thickness of 3-5cm between the adjacent asphalt pavement layers (1), placing a cover plate (10) at the top end of the paved fine aggregates, and then compacting the asphalt pavement layers (1) for the second time by a compactor.

8. The asphalt pavement construction method for automatically collecting rainwater according to claim 1, wherein: lay thickness at 7-10 cm's coarse aggregate on basic unit (4) and form basic unit (21) that permeates water, lay the fine aggregate that thickness is 3-5cm after the coarse aggregate that will lay trowelling and form superficial layer (22) that permeates water, at the basic unit (21) that permeates water embedded a plurality of pipes (3) of permeating water of establishing, at the superficial layer (22) that permeates water embedded strainer (12) of installing the conducting strip of establishing, at basic unit (21) that permeates water embedded step of being equipped with two drainage tanks (52) that are located the pipe (3) both ends of permeating water includes: the water filtering plate (12) is prepared by mixing polyurethane soft foaming particles and metal particles, and the proportion of the polyurethane soft foaming particles to the metal particles is regulated and controlled according to the environment.

9. The asphalt pavement construction method for automatically collecting rainwater according to claim 1, wherein: the steps of mixing asphalt materials and mineral aggregates to form asphalt concrete, laying the asphalt concrete on the water permeable layer (2), flattening the asphalt concrete by a compactor, continuously laying the asphalt concrete at intervals, and compacting the asphalt concrete further comprise: a high-pressure suction fan is arranged on one side of the permeable layer (2), and is opened when asphalt concrete is laid, so that harmful gas emitted by the asphalt concrete is sucked by the high-pressure suction fan.

10. The asphalt pavement construction method for automatically collecting rainwater according to claim 1, wherein: paving fine aggregates with the thickness of 3-5cm between the adjacent asphalt pavement layers (1), placing a cover plate (10) at the top end of the paved fine aggregates, and performing secondary compaction on the asphalt pavement layers (1) through a compactor, wherein the step further comprises the following steps: the asphalt concrete is laid along the length direction of the pavement when being laid, the compactor moves along the length direction of the pavement, and the length of a compression roller of the compactor is smaller than the width of the asphalt concrete.