A road structure for reducing water accumulation and a construction method thereof

Abstract

The application relates to a road structure for reducing accumulated water and a construction method thereof. The road structure for reducing accumulated water comprises a road body, a municipal drainage pipe and a peripheral sponge body. An overflow pipeline and a filling sealing body are arranged in a rainwater well of the road body. The overflow pipeline comprises a communication pipe and an overflow pipe. The two ends of the communication pipe are respectively communicated with the municipal drainage pipe. The overflow pipe is inserted into the communication pipe. The filling sealing body blocks the gap between the communication pipe and the municipal drainage pipe. The road body is provided with a drainage pipe. The drainage pipe is used for communicating the rainwater well and the peripheral sponge body. The drainage height of the drainage pipe is lower than the overflow height of the overflow pipe. The edge part of the road body is embedded with an accumulated water drainage pipeline. The accumulated water drainage pipeline is located between two adjacent rainwater wells. The accumulated water drainage pipeline comprises an accumulated water discharge main pipe and a plurality of water guide short pipes. The two ends of the accumulated water discharge main pipe are respectively communicated with two adjacent rainwater wells. The water guide short pipes are used for guiding rainwater into the accumulated water discharge main pipe. The application can improve the accumulated water problem of urban roads at a low cost.

Description

Technical Field

[0001] This application relates to the field of municipal road construction technology, and in particular to a road structure that reduces water accumulation and its construction method. Background Technology

[0002] Sponge city is a new generation of urban stormwater management concept, referring to a city's ability to adapt to environmental changes and cope with natural disasters caused by rainwater, much like a sponge. Municipal roads are crucial to citizens' daily travel, making sponge city transformation particularly important.

[0003] Traditional municipal road drainage relies primarily on the road's cross slope to direct rainwater into storm drains and then into the municipal sewer network. However, due to road settlement and construction unevenness, roads often become flooded during rainy days, severely impacting residents' daily lives and wasting rainwater resources. Therefore, finding better ways to direct road water into storm drains has become an important direction for sponge city development and research.

[0004] In the construction of conventional municipal road sponge city renovation, large areas of the original road surface are often broken up to complete the construction of permeable structures. However, this has a significant impact on the surrounding environment, and the construction process is complex and costly. Summary of the Invention

[0005] To address the issues of complex construction processes and high costs associated with sponge city road renovation, this application provides a road structure and its construction method that reduces water accumulation.

[0006] This application provides a road structure and construction method for reducing water accumulation, which adopts the following technical solution:

[0007] A road structure for reducing water accumulation includes a road body, a municipal drainage pipe, and surrounding sponge structures. The surrounding sponge structures are arranged horizontally alongside the road body. The municipal drainage pipe is buried within the road body, and the road body is intermittently equipped with storm drains for connecting to the municipal drainage pipe. Each storm drain in the road body contains an overflow pipe and a sealing filler. The overflow pipe includes a connecting pipe and an overflow pipe, with both ends of the connecting pipe connected to the municipal drainage pipe. The overflow pipe is inserted into the connecting pipe, with the end of the overflow pipe furthest from the connecting pipe facing upwards. The sealing filler fills the bottom of the storm drain and seals the connection between the connecting pipe and the municipal drainage pipe. The gaps between water pipes; the road body is equipped with drainage pipes, which are used to connect rainwater wells and surrounding sponge bodies. The drainage height of the drainage pipes is lower than the overflow height of the overflow pipes; the edge of the road body is equipped with drainage pipes, which are located between two adjacent rainwater wells. The drainage pipes include a main drainage pipe and multiple short water guide pipes. The short water guide pipes are inserted into the main drainage pipe. The multiple short water guide pipes are arranged at intervals along the length of the main drainage pipe. The two ends of the main drainage pipe are connected to two adjacent rainwater wells respectively. The short water guide pipes are used to guide rainwater into the main drainage pipe.

[0008] By adopting the above technical solution, drainage pipes are installed along the edge of the road and connected to storm drains, allowing water accumulated in recessed areas along the road edge to drain into the storm drains. Drainage outlets in the storm drains are connected to the surrounding sponge city structure, and overflow pipes are also installed to connect to the municipal drainage system. During periods of light rainfall, rainwater flows into the sponge city structure; during periods of heavy rainfall, rainwater flows through the overflow pipes to the municipal drainage system. This method not only effectively solves the problem of road flooding during rainy days, but also better conserves groundwater through the accumulation, infiltration, and purification of rainwater within the surrounding sponge city structure. This application represents a minimally invasive modification of stormwater collection points, which can improve urban road flooding problems at a relatively low cost.

[0009] Optionally, the rainwater well cover is provided with a rainwater grate, and the lower surface of the rainwater grate is provided with a filter screen.

[0010] By adopting the above technical solution, the rainwater well mainly filters garbage and debris through the rainwater grate. By setting a filter screen on the lower surface of the rainwater grate, smaller garbage and debris can be filtered out, which helps to keep the overflow pipe and municipal drainage pipe unobstructed.

[0011] Optionally, a filter cap is provided at the upper end of the overflow pipe.

[0012] By adopting the above technical solution, the filter cap at the top of the overflow pipe can have a filtering function. When the filter screen is damaged, the filter cap can play a filtering role, reducing the entry of large-sized garbage and debris into the overflow pipe and municipal drainage pipe.

[0013] Optionally, the main drain pipe is provided with several maintenance pipes at intervals, and the diameter of the maintenance pipes is larger than the diameter of the short drain pipes.

[0014] By adopting the above technical solution, the inspection pipe has a larger opening, and pressurized water can be injected into the main drain pipe through the inspection port to flush the main drain pipe.

[0015] Optionally, the drainage pipe further includes a conduit, which is arranged side by side with the main drainage pipe. A rope is threaded through the conduit and connected to the main drainage pipe. The two ends of the rope are connected to form a closed path.

[0016] By employing the above technical solution, the rope is simultaneously connected to both the conduit and the main drainage pipe, forming a closed path. When the main drainage pipe becomes blocked, the rope is pulled back and forth, causing friction to move the blockage within the pipe, thus clearing the blockage. Furthermore, when two people simultaneously hold the rope at the outer ends of the main drainage pipe, the rope can be moved radially, pressing and dislodging the blockage and further loosening it.

[0017] Optionally, the rope is detachably connected to a debris removal component, which has an outwardly convex arc surface that is adapted to the inner wall of the main drainage pipe. The rope is used to pull the debris removal component to move along the axial direction of the main drainage pipe.

[0018] By adopting the above technical solution, the rope pulls the impurity removal component to move along the axial direction of the main drain pipe. As the impurity removal component moves from one end of the main drain pipe to the other end, it can push out the impurities in the main drain pipe.

[0019] Optionally, a spare rope is threaded through the conduit, and the spare rope is simultaneously threaded and connected to the main drain pipe, with the two ends of the spare rope forming a closed path.

[0020] By adopting the above technical solution, when a rope breaks, the broken rope can be removed. Subsequently, one end of another replacement rope can be tied to the spare rope. The spare rope is used to pull the replacement rope through the main drainage pipe and the conduit in sequence. Then, the replacement rope is separated from the spare rope, and the two ends of the replacement rope are connected to each other to form a closed path to replace the broken old rope.

[0021] Optionally, the length of the conduit is greater than the length of the main drain pipe, and the main drain pipe is located between the two ends of the conduit.

[0022] By adopting the above technical solution, the length of the conduit is greater than the length of the main drain pipe, so that the part of the rope between the end face of the main drain pipe and the end face of the conduit is exposed, allowing workers to hold and pull the rope, making it more convenient to pull the rope.

[0023] Optionally, the rainwater well is provided with a hook on the side wall corresponding to the main drainage pipe. The installation position of the hook is higher than the center line of the main drainage pipe. When the rope is hooked to the hook, the rope is in a taut state.

[0024] By adopting the above technical solution, the installation height of the hanger is higher than the center of the main drain pipe. When the rope is attached to the hanger and tightened, the rope abuts against the upper part of the inner wall of the main drain pipe, making it less likely for the rope to obstruct the flow of water in the main drain pipe. This helps to ensure the smooth flow of water in the main drain pipe and reduce the retention of impurities.

[0025] A construction method for a road structure that reduces water accumulation includes the following steps:

[0026] The edges of the road body are excavated with longitudinal trenches for laying drainage pipes, and the two ends of the longitudinal trenches are connected to two adjacent rainwater wells respectively.

[0027] Lay the main drainage pipe in the longitudinal trench, and insert short water guide pipes at intervals in the main drainage pipe;

[0028] Backfilling longitudinal trenches with fine aggregate concrete;

[0029] Install a connecting pipe inside the rainwater well, insert an overflow pipe into the connecting pipe, and pour concrete at the bottom of the rainwater well to form a filling seal.

[0030] A transverse trench for laying drainage pipes is excavated at the edge of the road body corresponding to the rainwater well. The transverse trench extends to the surrounding sponge body.

[0031] Installation holes for installing drainage pipes are made on the side wall of the rainwater well near the surrounding sponge body;

[0032] Lay drainage pipes and backfill the transverse trenches.

[0033] By adopting the above technical solution, this construction method can make minimally invasive modifications to rainwater collection inlets, thereby improving the problem of water accumulation on urban roads at a lower cost.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. Drainage pipes are installed along the edge of the road and connected to storm drains, allowing water accumulated in recessed areas along the road edge to drain into the storm drains. Drainage outlets in the storm drains connect to the surrounding sponge city infrastructure, and overflow pipes connect to the municipal drainage system. During light rainfall, rainwater flows into the sponge city infrastructure; during heavy rainfall, rainwater flows through the overflow pipes to the municipal drainage system. This application involves a minimally invasive modification to the stormwater collection inlet, which can improve urban road flooding problems at a relatively low cost.

[0036] 2. By setting up a rope that passes through both the conduit and the main drain pipe, when the main drain pipe becomes blocked, the rope is pulled back and forth, causing friction to move the blockage inside the main drain pipe, thus facilitating the unblocking of the main drain pipe. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of this embodiment.

[0038] Figure 2 This is a schematic diagram illustrating the connection between the overflow pipe and the municipal drainage pipe in this embodiment.

[0039] Figure 3 This is a schematic diagram of the drainage pipe in this embodiment.

[0040] Figure 4 This is a schematic diagram used in this embodiment to illustrate the connection state between the rope and the hanger.

[0041] Figure 5 This is a schematic diagram of the construction method for reducing water accumulation in the road structure of this embodiment.

[0042] Explanation of reference numerals in the attached drawings: 1. Road body; 11. Stormwater well; 2. Municipal drainage pipe; 3. Surrounding sponge body; 4. Overflow pipe; 41. Connecting pipe; 42. Overflow pipe; 421. Filter cap; 43. T-joint; 5. Filler sealant; 51. Concrete body; 52. Waterproof cement surface layer; 6. Stormwater grate; 61. Filter screen; 7. Drainage pipe; 71. Main drainage pipe; 72. Short water guide pipe; 73. Inspection pipe; 731. Inspection port; 74. Conduit; 75. Rope; 76. Debris removal parts; 761. Through groove; 762. Limiting bolt; 763. Limiting washer; 77. Spare rope; 8. Hanging piece; 81. Pole; 82. Circular cap; 9. Drainage pipe. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0044] This application discloses a road structure that reduces water accumulation. (Refer to...) Figure 1The road structure for reducing water accumulation includes the road body 1, municipal drainage pipes 2, and surrounding sponge structures 3. The road body 1 includes the roadbed and concrete pavement. The surrounding sponge structures 3 are arranged horizontally alongside the road body 1. The surrounding sponge structures 3 can be existing or specially constructed permeable embankment structures. The municipal drainage pipes 2 are buried in the road body 1 and located at the edge of the road body 1. The road body 1 is provided with rainwater wells 11 at intervals to connect with the municipal drainage pipes 2. The road body 1 is provided with multiple drainage pipes 9, each drainage pipe 9 corresponding to a rainwater well 11. The drainage pipes 9 are used to connect the rainwater wells 11 and the surrounding sponge structures 3. Rainwater in the rainwater wells 11 can be discharged to the surrounding sponge structures 3 through the drainage pipes 9.

[0045] Reference Figure 1 and Figure 2 The storm drain 11 of the road body 1 is equipped with an overflow pipe 4 and a filling seal 5. The overflow pipe 4 includes a connecting pipe 41 and an overflow pipe 42. The diameter of the overflow pipe 42 is larger than that of the connecting pipe 41. Both ends of the connecting pipe 41 are connected to the municipal drainage pipe 2. The overflow pipe 42 is vertically inserted into the connecting pipe 41, with the end of the overflow pipe 42 away from the connecting pipe 41 facing upwards. The upper end of the overflow pipe 42 is higher than the laying height of the inner wall of the drainage pipe 9, and the drainage height of the drainage pipe 9 is lower than the overflow height of the overflow pipe 42. The filling seal 5 fills the bottom of the storm drain 11 and seals the gap between the connecting pipe 41 and the municipal drainage pipe 2. The filling seal 5 includes a concrete body 51 and a waterproof cement surface layer 52. The connecting pipe 41 is wrapped around the concrete body 51, and the waterproof cement surface layer 52 is located above the concrete body 51.

[0046] After rainwater enters the rainwater well 11, it first flows through the drainage pipe 9 to the surrounding sponge body 3. As the water level continues to rise, the rainwater flows through the overflow pipe 4 into the municipal drainage pipe 2.

[0047] In this embodiment, both the connecting pipe 41 and the overflow pipe 42 are PVC pipes. When connecting the connecting pipe 41 and the overflow pipe 42, the two PVC pipe sections serving as the connecting pipe 41 are respectively inserted into the interface of the municipal drainage pipe 2 connecting the rainwater well 11, and then the two PVC pipe sections are connected to the overflow pipe 42 using the tee connector 43.

[0048] In another embodiment, two PVC pipe segments serving as connecting pipes 41 can be inserted into the interfaces of the municipal drainage pipe 2 that connects to the rainwater well 11, and then the ends of the two PVC pipe segments can be aligned and joined together. One of the PVC pipe segments has an insertion interface on its outer peripheral wall that is compatible with the overflow pipe 42. When the overflow pipe 42 is inserted into the insertion interface, a bypass overflow pipe 4 can be formed.

[0049] Reference Figure 2The storm drain 11 is covered with a storm drain grate 6, and the lower surface of the storm drain grate 6 is equipped with a filter screen 61, which is made of galvanized and powder-coated steel wire mesh. The upper end of the overflow pipe 42 is equipped with a filter cap 421. Both the storm drain grate 6 and the filter screen 61 can filter debris in the rainwater. The filter screen 61 can filter smaller debris. When the filter screen 61 is damaged, the filter cap 421 can perform the filtering function, reducing the entry of large debris into the overflow pipe 4 and the municipal drainage pipe 2.

[0050] Reference Figure 1 and Figure 3 A drainage pipe 7 is buried at the edge of the road body 1, and the drainage pipe 7 is set according to the existing water accumulation situation of the road surface. The drainage pipe 7 is located between two adjacent rainwater wells 11. The drainage pipe 7 includes a main drainage pipe 71 and multiple short water guide pipes 72. The two ends of the main drainage pipe 71 are connected to the two adjacent rainwater wells 11 respectively. The short water guide pipes 72 are inserted into the main drainage pipe 71. The multiple short water guide pipes 72 are arranged at equal intervals along the length of the main drainage pipe 71. The ends of the short water guide pipes 72 are vertically upward, and the upper ends of the short water guide pipes 72 are connected to the upper surface of the road body 1. The short water guide pipes 72 can drain the rainwater on the surface of the road body 1 into the rainwater wells 11 through the main drainage pipe 71, so that the road is less likely to accumulate water in the depressions.

[0051] In this embodiment, the main drainage pipe uses a DN65 PPR seepage pipe with seepage holes evenly distributed, and the short water pipe 72 uses a DN20 PVC seepage pipe with seepage holes evenly distributed.

[0052] Reference Figure 3 The main drainage pipe 71 is interspersed with several inspection pipes 73. The diameter of the inspection pipes 73 is smaller than that of the main drainage pipe 71 but larger than that of the short water pipe 72. The opening of the inspection pipe 73 serves as an inspection port 731. The inspection port 731 is provided to allow for periodic flushing of the main drainage pipe 71 with high-pressure water, which helps to keep the drainage pipe 7 unobstructed.

[0053] Reference Figure 3 The drainage pipe 7 also includes a conduit 74, the length of which is greater than the length of the main drainage pipe 71. The main drainage pipe 71 is located between the two ends of the conduit 74, and the two ends of the conduit 74 extend into two adjacent rainwater wells 11 respectively. The conduit 74 and the main drainage pipe 71 are arranged side by side, and a rope 75 is threaded through the conduit 74. The rope 75 is also threaded and connected to the main drainage pipe 71, and the two ends of the rope 75 are connected to form a closed path. In this embodiment, the rope 75 is a steel wire rope, and the two ends of the steel wire rope are connected by a metal crimped joint.

[0054] Reference Figure 3The rope 75 is detachably connected to a debris removal component 76. The debris removal component 76 has a semi-circular or truncated cross-section and an outwardly convex arc surface that fits into the inner wall of the main drainage pipe 71. A through groove 761 for accommodating the rope 75 is provided on the side of the debris removal component 76 away from the outwardly convex arc surface. Two limiting bolts 762 are threadedly connected to the side of the debris removal component 76 away from the outwardly convex arc surface. Limiting washers 763 are fitted onto the limiting bolts 762, and the limiting washers 763 press against the rope 75.

[0055] By dragging the rope 75, impurities adhering to the inner wall of the drain pipe 71 can be scraped away, thereby improving the cleaning effect of the drain pipe 71. Furthermore, when the debris removal component 76 connected to the rope 75 is inserted into the drain pipe 71, the rope 75 pulls the debris removal component 76 to move along the axial direction of the drain pipe 71, so that the debris removal component 76 moves from one end of the drain pipe 71 to the other end, allowing the debris removal component 76 to remove stubborn blockages adhering to the drain pipe 71.

[0056] Reference Figure 3 A spare rope 77 is threaded through the conduit 74 and is simultaneously connected to the main drain pipe 71. The two ends of the spare rope 77 are connected to form a closed path. The spare rope 77 is kept taut, and its position inside the main drain pipe 71 is higher than the lowest point of the inner wall of the main drain pipe 71. When the rope 75 breaks, one end of the replacement rope 75 can be tied to the spare rope 77, and then the spare rope 77 can be used to pull the rope through the main drain pipe 71 and the conduit 74 in sequence. Subsequently, the replacement rope 75 is separated from the spare rope 77, and the two ends of the replacement rope 75 are connected to each other to form a closed path to replace the broken old rope 75.

[0057] Reference Figure 4 The rainwater well 11 is provided with a hook 8 on the side wall corresponding to the main drainage pipe 71. The hook 8 includes a rod 81 and a circular cap 82. The rod 81 is embedded in the side wall of the rainwater well 11. A gap is left between the circular cap 82 and the side wall of the rainwater well 11 for the placement of the rope 75. The installation position of the hook 8 is higher than the center line of the main drainage pipe 71 and is offset from the main drainage pipe 71 in the horizontal direction. When the rope 75 is hooked to the hook 8, the rope 75 is in a taut state.

[0058] Since the installation height of the hanger 8 is higher than the center line of the main drain pipe, when the rope 75 is attached to the hanger 8 and tightened, the rope 75 abuts against the upper part of the inner wall of the main drain pipe 71, making it less likely for the rope 75 to obstruct the flow of water in the main drain pipe 71, which helps to reduce the accumulation of debris in the main drain pipe 71.

[0059] This implementation also discloses a construction method for road structures that reduce water accumulation, including the following steps:

[0060] Step 1: A longitudinal trench is excavated at the edge of the road body 1 to lay the drainage pipe 7. The longitudinal trench is 10cm high and 10cm wide. The two ends of the longitudinal trench are connected to two adjacent rainwater wells 11 respectively.

[0061] Step 2, lay drainage pipe 7; lay main drainage pipe 71 in longitudinal trench, insert short water guide pipe 72 at intervals of 25cm in the main drainage pipe 71, and insert maintenance pipe 73 at intervals of 4m in the main drainage pipe 71.

[0062] Step 3: Backfill the longitudinal trench with fine aggregate concrete and smooth and slope the fine aggregate concrete. After the fine aggregate concrete has solidified, cut and grind the protruding water guide pipe 72 and maintenance pipe 73.

[0063] Step 4: Install overflow pipe; install connecting pipe 41 in rainwater well 11, insert overflow pipe into connecting pipe 41, and pour filling seal 5 at the bottom of rainwater well 11;

[0064] Step 5: Excavate a transverse trench for laying drainage pipe 9 at the location corresponding to the rainwater well 11 on the edge of the road body 1. The transverse trench extends to the surrounding sponge body 3. The excavation of the transverse trench includes cutting and excavating the road body and excavating the earthwork outside the road body 1.

[0065] Step 6: Make an installation hole for installing the drain pipe 9 on the side wall of the rainwater well 11 near the surrounding sponge body 3;

[0066] Step 7: Lay the drainage pipe 9, backfill the excavated soil required for laying the drainage pipe 9, and backfill the transverse trench.

[0067] In the above steps, steps 4-7 can be performed before steps 1-3.

[0068] The implementation principle of the road structure and construction method for reducing water accumulation in this application embodiment is as follows: a drainage pipe 7 is installed along the edge of the road body 1 and connected to a rainwater well 11, allowing water accumulated in the recessed areas of the road edge to be discharged into the rainwater well 11 through the drainage pipe 7. A drainage outlet is installed in the rainwater well 11 and connected to the surrounding sponge body 3, while an overflow pipe 42 is installed and connected to the municipal drainage pipe 2. When rainfall is light, rainwater flows into the sponge body; when rainfall is heavy, rainwater can flow through the overflow pipe 4 to the municipal drainage pipe 2. This method not only effectively solves the problem of road water accumulation during rainy days, but also better conserves groundwater through the accumulation, infiltration, and purification of rainwater in the surrounding sponge body 3. This application involves a minimally invasive modification of the rainwater collection inlet, which can improve the problem of water accumulation on urban roads at a lower cost.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A road structure for reducing water accumulation, characterized in that, The road includes a road body (1), a municipal drainage pipe (2), and a surrounding sponge body (3). The surrounding sponge body (3) is arranged horizontally alongside the road body (1). The municipal drainage pipe (2) is buried in the road body (1). The road body (1) is provided with rainwater wells (11) at intervals for connecting the municipal drainage pipe (2). The rainwater wells (11) of the road body (1) are provided with overflow pipes (4) and filling seals (5). The overflow pipes (4) include connecting pipes (41) and overflow pipes (42). The two ends of the connecting pipes (41) are... The overflow pipe (42) is inserted into the connecting pipe (41) and is not connected to the municipal drainage pipe (2). The port of the overflow pipe (42) away from the connecting pipe (41) faces upward. The filling seal (5) fills the bottom of the rainwater well (11) and seals the gap between the connecting pipe (41) and the municipal drainage pipe (2). The road body (1) is provided with a drainage pipe (9). The drainage pipe (9) is used to connect the rainwater well (11) and the surrounding sponge body (3). The drainage height of the drainage pipe (9) is lower than the overflow height of the overflow pipe (42). A drainage pipe (7) is buried at the edge of the road body (1). The drainage pipe (7) is located between two adjacent rainwater wells (11). The drainage pipe (7) includes a main drainage pipe (71) and multiple short water pipes (72). The short water pipes (72) are inserted into the main drainage pipe (71). The multiple short water pipes (72) are arranged at intervals along the length of the main drainage pipe (71). The two ends of the main drainage pipe (71) are respectively connected to two adjacent rainwater wells (11). The short water pipes (72) are used to guide rainwater into the main drainage pipe (71). The drainage pipe (7) also includes a conduit (74), which is arranged side by side with the main drainage pipe (71). A rope (75) is threaded through the conduit (74), and the rope (75) is connected to the main drainage pipe (71). The two ends of the rope (75) are connected to form a closed path. The rope (75) is detachably connected to a debris removal component (76), which has an outwardly convex arc surface that is adapted to the inner wall of the main drain pipe (71). The rope (75) is used to pull the debris removal component (76) to move along the axial direction of the main drain pipe (71).

2. The road structure for reducing water accumulation according to claim 1, characterized in that: The rainwater well (11) is covered with a rainwater grate (6), and the lower surface of the rainwater grate (6) is provided with a filter screen (61).

3. The road structure for reducing water accumulation according to claim 1, characterized in that: The upper end of the overflow pipe (42) is provided with a filter cap (421).

4. The road structure for reducing water accumulation according to claim 1, characterized in that: The main drain pipe (71) is provided with several maintenance pipes (73) at intervals, and the diameter of the maintenance pipes (73) is larger than the diameter of the short water pipe (72).

5. The road structure for reducing water accumulation according to claim 1, characterized in that: The conduit (74) is fitted with a spare rope (77), which is connected to the main drain pipe (71) for water accumulation. The two ends of the spare rope (77) are connected to form a closed path.

6. The road structure for reducing water accumulation according to claim 1, characterized in that: The length of the conduit (74) is greater than the length of the main drain pipe (71), and the main drain pipe (71) is located between the two ends of the conduit (74).

7. The road structure for reducing water accumulation according to claim 1, characterized in that: The rainwater well (11) is provided with a hook (8) on the side wall corresponding to the main drain pipe (71). The installation position of the hook (8) is higher than the center line of the main drain pipe (71). When the rope (75) is hooked to the hook (8), the rope (75) is in a taut state.

8. The construction method for reducing water accumulation in road structures according to any one of claims 1-7, characterized in that: Includes the following steps: The edge of the road body (1) is excavated to create a longitudinal trench for laying drainage pipes (7), and the two ends of the longitudinal trench are connected to two adjacent rainwater wells (11). A main drain pipe (71) is laid in the longitudinal trench, and short water pipes (72) are inserted at intervals in the main drain pipe (71). Backfilling longitudinal trenches with fine aggregate concrete; Install a connecting pipe (41) inside the rainwater well (11), insert an overflow pipe into the connecting pipe (41), and pour concrete at the bottom of the rainwater well (11) to form a filling seal (5). A transverse trench for laying drainage pipes (9) is excavated at the edge of the road body (1) corresponding to the rainwater well (11), and the transverse trench extends to the surrounding sponge body (3). An installation hole for installing a drain pipe (9) is made on the side wall of the rainwater well (11) near the surrounding sponge body (3); Lay drainage pipes (9) and backfill the transverse trench.

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