Municipal road energy-saving drainage construction method

Abstract

The invention relates to the technical field of road drainage construction, and provides a municipal road energy-saving drainage construction method which comprises the following steps: S1, tamping and flattening the surface of a roadbed; s2, a drainage ditch and a water collecting well are buried in the two sides of the roadbed, and the drainage ditch communicates with the water collecting well; s3, graded broken stones are laid on the surface of the roadbed to form a broken stone hardcore; s4, auxiliary drainage component installation, wherein a plurality of auxiliary drainage pipes are laid on the broken stone hardcore, and the two ends of the auxiliary drainage pipes communicate with drainage ditches in the two sides of the roadbed correspondingly; a plurality of water seepage holes are formed in the top of the wall of the auxiliary drainage pipe; and S5, water-permeable pavement structure construction: pouring water-permeable concrete on the broken stone hardcore and performing maintenance so as to form the water-permeable pavement structure. The road drainage system has the effect of improving the rainwater utilization rate of the road drainage system.

Description

Technical Field

[0001] The present application relates to the field of road drainage construction, and in particular to an energy-saving drainage construction method for a municipal road. Background Art

[0002] The existing urban road drainage system is mostly composed of stormwater and sewage wells and sewage pipe networks. On rainy days, rainwater from the road surface is concentrated into the sewage pipe network through the stormwater and sewage wells, and then discharged into the sewage treatment plant for treatment.

[0003] With regard to the above-mentioned related technologies, the current drainage systems of urban roads generally lack effective utilization of rainwater as a water resource, resulting in a waste of rainwater as a water resource; on the other hand, during the rainy season, a large amount of rainwater is directly discharged into the sewage treatment plant through the sewage pipe network, which can easily increase the treatment burden of the sewage treatment plant. Therefore, there is room for improvement. Summary of the invention

[0004] In order to improve the utilization rate of rainwater in urban road drainage systems, the present application provides a municipal road energy-saving drainage construction method.

[0005] This application provides a municipal road energy-saving drainage construction method, which adopts the following technical solutions: A municipal road energy-saving drainage construction method comprises the following steps: S1: compacting and flattening the roadbed surface; S2: Installation and construction of drainage collection components: Drainage ditches and water collection wells are buried on both sides of the roadbed, and the drainage ditches and water collection wells are connected; a seepage port is opened on the side of the drainage ditch facing the roadbed; a submersible pump is installed in the water collection well; an overflow pipe is connected to the top of the water collection well, and the overflow pipe is connected to the sewage pipe network; S3: gravel cushion layer laying: graded gravel is laid on the roadbed surface to form a gravel cushion layer; S4: Installation of auxiliary drainage components: laying a number of auxiliary drainage pipes on the gravel cushion layer, and connecting the two ends of the auxiliary drainage pipes to the drainage ditches on both sides of the roadbed respectively; a number of seepage holes are opened on the top of the auxiliary drainage pipe wall; S5: Permeable pavement structure construction: pour permeable concrete on the gravel cushion layer and maintain it to form a permeable pavement structure.

[0006] By adopting the above technical solution, after entering the permeable pavement structure, rainwater can enter the drainage ditch through the seepage port on the side of the drainage ditch, and then flow into the water collection well for storage through the drainage ditch. The rainwater stored in the water collection well can be pumped out by a submersible pump installed in the water collection well to be used as water for green belt irrigation or road washing, thereby improving the utilization rate of rainwater and saving water resources. By setting an overflow pipe in the water collection well, the excess rainwater in the water collection well can be discharged into the sewage pipe network through the overflow pipe, which is conducive to reducing the situation where too much rainwater in the water collection well flows back to the road surface. By burying an auxiliary drainage pipe in the permeable pavement structure, part of the rainwater that enters the permeable pavement structure can flow into the auxiliary drainage pipe through the water permeable holes on the auxiliary drainage pipe, and then flow into the drainage ditch through the auxiliary drainage pipe, which is conducive to improving the overall drainage capacity of the road.

[0007] Preferably, the drainage ditch is connected to a plurality of connecting pipes on the side facing the roadbed, and the ends of the connecting pipes and both ends of the auxiliary drainage pipes are connected to first connecting flanges; In step S4, when installing the auxiliary drain pipe, the first connecting flange at the end of the auxiliary drain pipe is connected to the first connecting flange at the end of the connecting pipe by bolts and nuts.

[0008] By adopting the above technical solution, on the one hand, the auxiliary drainage pipe can be stably supported between the drainage ditches on both sides of the roadbed; on the other hand, the drainage ditches on both sides of the roadbed can be supported and limited by the auxiliary drainage pipe to reduce the displacement of the drainage ditches on both sides of the roadbed under the action of external forces.

[0009] Preferably, in step S4, after completing the installation of the auxiliary drainage pipes, an air pipe is laid above the auxiliary drainage pipes and connected to the auxiliary drainage pipes; an equipment well is installed on the gravel cushion layer and an air pump is installed in the equipment well, and the air pump is connected to the air pipe.

[0010] By adopting the above technical solution, on rainy days, an air pump can be used to evacuate several auxiliary drainage pipes through the air pipe to create a negative pressure state in the auxiliary drainage pipes, which is beneficial to accelerate the entry of rainwater in the permeable pavement structure into the auxiliary drainage pipes; on sunny days, an air pump can be used to blow air into the auxiliary drainage pipes through the air pipe to discharge rainwater and silt remaining in the auxiliary drainage pipes out of the auxiliary drainage pipes, which is beneficial to reduce blockages in the auxiliary drainage pipes.

[0011] Preferably, in step S4, before installing the auxiliary drainage pipe, a rubber airbag is inserted into the auxiliary drainage pipe, and two ends of the rubber airbag are respectively extended out of two ends of the auxiliary drainage pipe; When installing the auxiliary drainage pipe, insert the two ends of the rubber airbag extending out of the auxiliary drainage pipe into the connecting pipes corresponding to the drainage ditches on both sides of the roadbed; inflate the rubber airbag and expand the rubber airbag to press against the inner cavities of the connecting pipe and the auxiliary drainage pipe; In step S5, after the pouring construction of the permeable pavement structure is completed, the gas in the rubber airbag is released, and the rubber airbag is removed from the connecting pipe and the auxiliary drainage pipe.

[0012] By adopting the above technical scheme, the water-permeable holes on the auxiliary drainage pipe can be temporarily blocked by the inflated rubber airbag, which is helpful to reduce the situation where concrete slurry flows into the auxiliary drainage pipe during the subsequent pouring of permeable concrete; at the same time, the inflated rubber airbag is pressed against the inner cavity of the connecting pipe and the auxiliary drainage pipe, and the rubber airbag is used to assist in supporting and limiting the auxiliary drainage pipe, which is helpful to reduce the displacement of the auxiliary drainage pipe when the first connecting flange at the adjacent end of the auxiliary drainage pipe is subsequently connected to the connecting pipe.

[0013] Preferably, the outer side surface of the drainage ditch on the side where the seepage outlet is opened is paved with a permeable geotextile, and the permeable geotextile covers a plurality of the seepage outlets.

[0014] By adopting the above technical solution and setting the permeable geotextile, the permeable geotextile can be used to restrict the crushed stone cushion layer and the permeable pavement structure from entering the drainage ditch through the seepage port.

[0015] Preferably, a first cover plate and a second cover plate are respectively installed at the top openings of the drainage ditch and the water collection well, and long through holes are provided on the first cover plate and the second cover plate.

[0016] By adopting the above technical solution, the first cover plate and the second cover plate are used to respectively shield and protect the top of the drainage ditch and the water collection well, which helps to reduce the subsequent pedestrians falling into the drainage ditch and the water collection well; by setting the long through holes on the first cover plate and the second cover plate, when it rains, rainwater can directly enter the drainage ditch and the water collection well through the first cover plate and the second cover plate, which helps to improve the overall drainage efficiency of the road.

[0017] Preferably, a mud-carrying plate is laid on the bottom wall of the drainage ditch, and a plurality of connecting rods are connected to the surface of the mud-carrying plate.

[0018] By adopting the above technical solution and setting a mud-carrying board in the drainage ditch, silt and debris carried in daily rainwater can be accumulated on the mud-carrying board, and then the mud-carrying board can be moved out of the drainage ditch through the connecting rod, so as to clean up the accumulated debris in the drainage ditch.

[0019] Preferably, one end of the connecting rod away from the mud carrying plate is connected to the bottom of the first cover plate.

[0020] By adopting the above technical solution, when the first cover plate on the drainage ditch is subsequently removed from the drainage ditch, the first cover plate can drive the mud carrying plate together with the silt and debris accumulated on the mud carrying plate to be moved out of the drainage ditch through the connecting rod, so as to facilitate the cleaning of the silt and debris in the drainage ditch; at the same time, the mud carrying plate and the connecting rod can cooperate to provide auxiliary support for the first cover plate, which is beneficial to improve the overall structural strength of the first cover plate.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. During rainfall, rainwater entering the permeable pavement structure can flow into the drainage ditch through the seepage port on the drainage ditch, and then flow into the collection well for storage, thereby realizing the centralized collection of rainwater. Subsequently, the rainwater in the collection well can be pumped out through the submersible pump in the collection well for use as water for greening irrigation, which improves the utilization rate of rainwater and helps save water resources.

[0022] 2. By burying auxiliary drainage pipes in the permeable pavement structure and connecting the two ends of the auxiliary drainage pipes with the drainage ditches on both sides of the roadbed, rainwater that subsequently enters the permeable pavement structure can enter the auxiliary permeable holes through the permeable holes on the auxiliary drainage pipes, and then be discharged into the drainage ditch through the auxiliary drainage pipes, which is beneficial to improving the overall drainage capacity of the road.

[0023] 3. On rainy days, the air pump in the equipment well can pump air through the air pipe to several auxiliary drainage pipes in the permeable pavement structure, so that the inside of the auxiliary drainage pipes is in a negative pressure state, which is convenient for the rainwater in the permeable pavement structure to accelerate through the permeable holes into the auxiliary drainage pipes, which is beneficial to further improve the drainage capacity of the permeable pavement structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of an embodiment of the present application used to illustrate the state of constructing drainage ditches and water collection wells on both sides of the roadbed.

[0025] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0026] Figure 3 It is a schematic diagram of the structure of the drainage ditch used in the embodiment of the present application.

[0027] Figure 4 yes Figure 3 Enlarged schematic diagram of part B in the middle.

[0028] Figure 5 It is a schematic diagram of the embodiment of the present application for illustrating the state of laying a crushed stone cushion layer on a roadbed.

[0029] Figure 6 It is a schematic diagram of an embodiment of the present application used to illustrate the state of applying an auxiliary drainage component on a gravel cushion layer.

[0030] Figure 7 yes Figure 6 Enlarged schematic diagram of part C in the middle.

[0031] Figure 8 It is an enlarged schematic diagram used in the embodiment of the present application to illustrate the construction of a permeable cushion layer on a crushed stone cushion layer.

[0032] Description of reference numerals: 1. Roadbed; 11. Gravel cushion layer; 12. Permeable pavement structure; 2. Drainage ditch; 20. Seepage outlet; 21. First cover plate; 22. Connecting pipe; 23. Mud-carrying plate; 231. Limiting plate; 24. Connecting rod; 3. Water collection well; 31. Second cover plate; 4. Auxiliary drainage pipe; 41. Water permeable hole; 5. Air pipe; 6. Equipment well; 61. Air pump; 62. Third cover plate. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-8 This application is described in further detail.

[0034] The embodiment of the present application discloses a municipal road energy-saving drainage construction method, comprising the following steps: S1: Roadbed 1 surface compaction and flattening: refer to Figure 1 , the specific steps are as follows: S1.1: Clean up debris on the surface of roadbed 1; S1.2: Use a tamping machine to compact and flatten the surface of the roadbed 1 S2: Collection and drainage component burial: refer to Figure 1 , the specific steps are as follows: S2.1: Digging trenches for burying drainage ditches 2 and water collection wells 3 on both sides of the roadbed 1 by an excavator; S2.2: Use a crane to hoist the prefabricated drainage ditch 2 and water collection well 3 to the designated position of the ditch; S2.3: Fill the gaps between the drainage ditch 2, the water collection well 3 and the trench with soil and compact it.

[0035] Reference Figure 1 and Figure 2 A plurality of seepage openings 20 are provided on the side of the drainage ditch 2 facing the roadbed 1. A permeable geotextile is also laid on the outer side of the side of the drainage ditch 2 where the seepage openings 20 are provided; the permeable geotextile is fixed to the drainage ditch 2 by adhesive, and the permeable geotextile covers a plurality of permeable holes 41.

[0036] Reference Figure 2 and Figure 3A plurality of first cover plates 21 are installed on the top of the gutter 2. The plurality of first cover plates 21 are arranged to block the top opening of the gutter 2. The first cover plates 21 are used to shield and protect the top opening of the gutter 2 to prevent subsequent pedestrians from falling into the gutter 2. The first cover plates 21 are provided with a plurality of long through holes to facilitate rainwater to fall into the gutter 2 through the first cover plates 21.

[0037] Reference Figure 3 and Figure 4 , a number of mud-carrying plates 23 are also laid at the bottom of the inner cavity of the drainage ditch 2. The mud-carrying plates 23 correspond to the first cover plates 21 one by one, and are all located below the corresponding first cover plates 21; a number of connecting rods 24 are vertically welded on the upper surface of the mud-carrying plates 23. The ends of the connecting rods 24 away from the mud-carrying plates 23 are welded to the bottom of the corresponding first cover plates 21. Through the above arrangement, the silt and debris that enter the drainage ditch 2 with rainwater on a daily basis can be accumulated on the mud-carrying plates 23. When cleaning the drainage ditch 2 later, the first cover plate 21 is removed from the drainage ditch 2, and the mud-carrying plates 23 and the silt and debris accumulated on the mud-carrying plates 23 are moved out of the drainage ditch 2 together by using the first cover plate 21, so as to realize the cleaning of the mud and debris inside the drainage ditch 2, which is conducive to reducing the difficulty of cleaning the mud and debris accumulated inside the drainage ditch 2. Limiting plates 231 are vertically welded on the opposite sides of the mud-carrying plates 23, and the limiting plates 231 on the opposite sides of the mud-carrying plates 23 are respectively arranged to fit the opposite inner walls of the drainage ditch 2.

[0038] Reference Figure 1 and Figure 2 A submersible pump is installed at the bottom of the inner cavity of the water collection well 3; the water outlet of the submersible pump is connected to a water outlet pipe, and the end of the water outlet pipe away from the submersible pump is penetrated through the wall of the water collection well 3 and extends to the ground. The rainwater collected in the water collection well 3 can be pumped out by the submersible pump later.

[0039] A second cover plate 31 is installed at the top of the water collection well 3 to shield and protect the wellhead of the water collection well 3 to prevent subsequent pedestrians from falling into the water collection well 3. The second cover plate 31 is also provided with a plurality of long through holes to facilitate subsequent rainwater and road surface water to fall into the water collection well 3 through the second cover plate 31.

[0040] The top wall of the water collection well 3 is connected to an overflow pipe, which is connected to the sewage network. The excess rainwater in the water collection well 3 can be discharged into the sewage network in time through the overflow pipe, reducing the situation where excessive rainwater in the water collection well 3 flows back onto the road surface.

[0041] S3: gravel cushion layer 11 laying: refer to Figure 1 and Figure 5 , laying graded crushed stones on the surface of the roadbed 1 to form a crushed stone cushion layer 11; S4: Auxiliary drainage component installation: refer to Figure 5 and Figure 6, lay a number of auxiliary drainage pipes 4 on the gravel cushion layer 11, and make the two ends of the auxiliary drainage pipes 4 connected with the drainage ditches 2 on both sides of the roadbed 1 respectively; after the auxiliary drainage pipes 4 are installed, lay the air pipe 5 above the several auxiliary drainage pipes 4 and connect the air pipe 5 with the several auxiliary drainage pipes 4; install the equipment well 6 on the gravel cushion layer 11 and install the air pump 61 in the equipment well 6, and connect the air pump 61 with the air pipe 5.

[0042] Reference Figure 6 and Figure 7 A plurality of water-permeable holes 41 are provided on the top of the wall of the auxiliary drainage pipe 4 ; the plurality of water-permeable holes 41 are evenly distributed along the length direction of the auxiliary drainage pipe 4 .

[0043] The drainage ditch 2 is evenly connected to a plurality of connecting pipes 22 along its own extension direction on one side facing the roadbed 1. The ends of both ends of the auxiliary drainage pipe 4 and the end of the connecting pipe 22 away from the drainage ditch 2 are coaxially welded with a first connecting flange.

[0044] The top of the auxiliary water supply pipe is connected to the corresponding air pipe 5 with a first branch pipe; the bottom of the air pipe 5 is connected to several auxiliary water supply pipes corresponding to a second branch pipe; the end of the first branch pipe away from the auxiliary drainage pipe 4 and the end of the second branch pipe away from the air pipe 5 are coaxially welded with a second connecting flange.

[0045] The specific steps of step S4 are as follows: S4.1: Rubber airbag installation: insert the rubber airbag into the auxiliary drainage pipe 4, and make the two ends of the rubber airbag extend out of the two ends of the auxiliary drainage pipe 4 respectively; S4.2: Hang the auxiliary drainage pipe 4 onto the gravel cushion layer 11 and place both ends of the auxiliary drainage pipe 4 close to the corresponding connecting pipes 22 on the two drainage ditches 2; S4.3: Insert the two ends of the rubber airbag extending out of the auxiliary drainage pipe 4 into the connecting pipes 22 on the two drainage ditches 2 respectively; S4.4: docking the auxiliary drainage pipe 4: move the auxiliary drainage pipe 4 so that the auxiliary drainage pipe 4 and the connecting pipe 22 are docked at their adjacent ends, and at the same time, inflate the rubber airbag so that the rubber airbag expands and presses against the connecting pipe 22; S4.5: Connect and fix the first connecting flange at one end of the auxiliary drain pipe 4 and the connecting pipe 22 by means of bolts and nuts; S4.6: Hoisting the air pipe 5 into place: hoist the air pipe 5 above a number of auxiliary water supply pipes, and connect the second branch pipe of the air pipe 5 with the first branch pipe of the corresponding auxiliary drainage pipe 4; S4.7: Install and fix the air pipe 5: Connect and fix the second connecting flanges at the adjacent ends of the first branch pipe and the second branch pipe by means of bolts and nuts; S4.8: Lift the equipment well 6 onto the gravel cushion 11, and install an air pump 61 in the equipment well 6; S4.9: Connect the air pipe 5 to the air pump 61.

[0046] S5: Permeable pavement structure 12 construction: refer to Figure 6 and Figure 8 , pouring permeable concrete on the surface of the crushed stone cushion layer 11 to form a permeable pavement structure 12; the specific steps are as follows: S5.1: Spread the mixed permeable concrete evenly on the gravel cushion layer 11 through a paving device; S5.2: Use a trowel to compact and level the surface of the permeable concrete; S5.3: Permeable concrete maintenance: watering and film laying on the surface of permeable concrete for maintenance; S5.4: Spray a finishing agent on the surface of permeable concrete.

[0047] S5.5: Release the gas in the rubber airbag located in the inner cavities of the connecting pipe 22 and the auxiliary drainage pipe 4, and move the rubber airbag out of the drainage ditch 2 through the connecting pipe 22.

[0048] Reference Figures 6 to 8 On rainy days, after entering the permeable pavement structure 12, rainwater can enter the drainage ditch 2 through the seepage ports 20 on the drainage ditch 2 on both sides of the roadbed 1, and then be concentrated and converged into the collection well 3 for storage through the drainage ditch 2. Subsequently, the rainwater stored in the collection well 3 can be pumped out by a submersible pump in the collection well 3 to be used as water for irrigation of the green belts on both sides of the road or water for road cleaning.

[0049] By burying an auxiliary drainage pipe 4 in the permeable pavement structure 12 and connecting the two ends of the auxiliary drainage pipe 4 to the drainage ditches 2 on both sides of the roadbed 1, part of the rainwater that subsequently enters the permeable pavement structure 12 can enter the auxiliary drainage pipe 4 through the permeable holes 41 on the auxiliary drainage pipe 4, and then flow into the drainage ditch 2 through the auxiliary drainage pipe 4, which is beneficial to improving the overall drainage capacity of the road.

[0050] By laying air pipes 5 on several auxiliary drainage pipes 4, and connecting the air pipes 5 with the auxiliary drainage pipes 4 and the air pump 61 in the equipment well 6; during the subsequent rainfall period, the air pump 61 in the equipment well 6 will evacuate the auxiliary water supply pipes at various locations through the air pipes 5, so that the inner cavity of the auxiliary drainage pipe 4 is in a negative pressure state as a whole, which is beneficial to accelerate part of the rainwater in the permeable pavement structure 12 to enter the auxiliary drainage pipe 4 through the permeable holes 41, which is beneficial to further improve the overall drainage effect of the permeable pavement structure 12; at the same time, on subsequent sunny days, the air pump 61 can blow air into the auxiliary drainage pipe 4 through the air pipe 5 to drive the rainwater and silt accumulated in the auxiliary drainage pipe 4 to be discharged into the drainage ditch 2 through the connecting pipe 22, which is beneficial to keep the auxiliary drainage pipe 4 unobstructed.

[0051] By inserting a rubber airbag into the auxiliary drainage pipe 4, and inserting the two ends of the rubber airbag into the connecting pipes 22 corresponding to the drainage ditches 2 on both sides of the roadbed 1, and then inflating the rubber airbag to expand the rubber airbag and press against the inner cavity of the connecting pipe 22 and the auxiliary drainage pipe 4; on the one hand, the several water-permeable holes 41 on the auxiliary drainage pipe 4 are blocked to limit the subsequent pouring of permeable concrete from entering the auxiliary drainage pipe 4 through the water-permeable holes 41, causing the auxiliary drainage pipe 4 to be blocked. On the other hand, the auxiliary drainage pipe 4 can be auxiliary supported and positioned by the inflated rubber airbag, so as to limit the displacement of the auxiliary drainage pipe 4 when connecting the first connecting flange at one end of the auxiliary drainage pipe 4 and the connecting pipe 22.

[0052] The present application can collect rainwater from the road through the coordinated cooperation of the drainage ditch 2, the collection well 3 and the permeable pavement structure 12 on the roadbed 1. Compared with the traditional method of directly discharging rainwater from the road into the sewage pipe network, it is helpful to reduce the waste of rainwater. At the same time, the collected rainwater can be used as water for irrigation of road green belts or water for road flushing and cleaning, which effectively improves the utilization rate of rainwater.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A municipal road energy-saving drainage construction method, characterized in that: The following steps are involved: S1: compacting and flattening the roadbed surface; S2: Installation and construction of drainage collection components: Drainage ditches (2) and water collection wells (3) are buried on both sides of the roadbed (1), and the drainage ditches (2) and the water collection wells (3) are connected; a seepage port (20) is opened on the side of the drainage ditch (2) facing the roadbed (1); a submersible pump is installed in the water collection well (3); an overflow pipe is connected to the top of the water collection well (3), and the overflow pipe is connected to the sewage pipe network; S3: laying of crushed stone cushion layer (11): laying graded crushed stones on the surface of the roadbed (1) to form a crushed stone cushion layer (11); S4: Installation of auxiliary drainage components: laying a plurality of auxiliary drainage pipes (4) on the gravel cushion layer (11), and making the two ends of the auxiliary drainage pipes (4) communicate with the drainage ditches (2) on both sides of the roadbed (1); a plurality of seepage holes are opened on the top of the wall of the auxiliary drainage pipes (4); S5: Construction of permeable pavement structure (12): pouring permeable concrete on the crushed stone cushion layer (11) and curing to form a permeable pavement structure (12).

2. A municipal road energy-saving drainage construction method according to claim 1, characterized in that: The drainage ditch (2) is connected to a plurality of connecting pipes (22) on the side facing the roadbed (1), and the ends of the connecting pipes (22) and the ends of both ends of the auxiliary drainage pipe (4) are connected to a first connecting flange; In step S4, when installing the auxiliary drainage pipe (4), the first connection flange at the end of the auxiliary drainage pipe (4) is connected to the first connection flange at the end of the connection pipe (22) by means of bolts and nuts.

3. A municipal road energy-saving drainage construction method according to claim 2, characterized in that: In step S4, after the installation of the auxiliary drainage pipes (4) is completed, an air pipe (5) is laid above the plurality of auxiliary drainage pipes (4) and the air pipe (5) is connected to the plurality of auxiliary drainage pipes (4); an equipment well (6) is installed on the gravel cushion layer (11) and an air pump (61) is installed in the equipment well (6), and the air pump (61) is connected to the air pipe (5).

4. A municipal road energy-saving drainage construction method according to claim 3, characterized in that: In step S4, before installing the auxiliary drainage pipe (4), a rubber airbag is inserted into the auxiliary drainage pipe (4), and the two ends of the rubber airbag are respectively extended out of the two ends of the auxiliary drainage pipe (4); When installing the auxiliary drainage pipe (4), the two ends of the rubber airbag extending out of the auxiliary drainage pipe (4) are respectively inserted into the corresponding connecting pipes (22) of the drainage ditches (2) on both sides of the roadbed (1); the rubber airbag is inflated and expanded to press against the inner cavities of the connecting pipe (22) and the auxiliary drainage pipe (4); In step S5, after the pouring construction of the permeable pavement structure (12) is completed, the gas in the rubber airbag is released, and the rubber airbag is removed from the connecting pipe (22) and the auxiliary drainage pipe (4).

5. A municipal road energy-saving drainage construction method according to claim 1, characterized in that: The outer side surface of the drainage ditch (2) on the side where the seepage opening (20) is opened is paved with a permeable geotextile, and the permeable geotextile is arranged to cover a plurality of the seepage openings (20).

6. A municipal road energy-saving drainage construction method according to claim 1, characterized in that: A first cover plate (21) and a second cover plate (31) are respectively installed at the top openings of the drainage ditch (2) and the water collection well (3), and long through holes are provided on the first cover plate (21) and the second cover plate (31).

7. A municipal road energy-saving drainage construction method according to claim 6, characterized in that: The bottom wall of the drainage ditch (2) is paved with a mud carrying plate (23), and the surface of the mud carrying plate (23) is connected to a plurality of connecting rods (24).

8. A municipal road energy-saving drainage construction method according to claim 7, characterized in that: One end of the connecting rod (24) away from the mud carrying plate (23) is connected to the bottom of the first cover plate (21).

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