A method for using a permeable water storage road and water storage system

Abstract

This application provides a permeable water-storage road and a method for using a water storage system. The water collection structure is located along the length of the permeable water-storage road body on one side and is connected to the permeable water-storage road body, a green belt planting structure, and a water storage structure. It collects rainwater infiltrating from the permeable water-storage road body and the green belt planting structure, and transports the collected rainwater to the water storage structure for storage. The water storage structure is located in the middle of the water collection structure and is connected to both the water collection structure and the green belt planting structure. It irrigates the root systems of the plants in the green belt planting structure with rainwater collected from the water collection structure. The green belt planting structure is located on one side of the permeable water-storage road body and surrounds the outer perimeter of the water collection structure. This type of road solves the problem of road surfaces being unable to store rainwater and urban flooding, increases rainwater utilization, and reduces investment costs and subsequent operation and management expenses.

Description

Technical Field

[0001] This application relates to the field of roads, and more particularly to a permeable water storage road and a method for using a water storage system. Background Technology

[0002] In traditional sponge city theory, permeable roads are an important way to slow down rainwater flow. Common materials used in both ordinary and permeable roads are ordinary silicate cement and asphalt. While ordinary silicate cement can resist the acidic erosion of normal rainwater, rainwater is prone to deterioration under long-term exposure. Therefore, it is necessary to explore a permeable water-storage road system to form a load-bearing water-storage road and its water storage system, which has better permeability and water storage capabilities than traditional roads.

[0003] Patent 202110860260.6 describes a permeable layer located beneath the asphalt pavement layer, partially penetrating the asphalt pavement. Several permeable pipes are embedded within the permeable layer. During rainy weather, rainwater flows into the permeable layer, where the permeable pipes absorb the rainwater and transport it to a collection point, thus collecting the rainwater for recycling. This addresses the problem of asphalt's lack of permeability, which hinders rainwater collection and recycling. However, the permeable layer's penetration through the asphalt surface and the covering plate on top can easily cause uneven road surface settlement and vehicle bouncing under prolonged traffic loads, affecting driving safety. Furthermore, the water tank is located below the road surface, requiring road surface demolition for maintenance, resulting in high maintenance costs. Additionally, the enclosed road structure can lead to water accumulation when the water tank is full during periods of heavy rainfall.

[0004] Patent 202123109389.8 describes a permeable pavement consisting of a base layer, a sealing layer, a permeable and water-retaining polymer base layer, and a permeable surface layer, laid sequentially from bottom to top. The permeable and water-retaining polymer base layer has drainage ditches along its sides. The permeable surface layer uses large internal pores to guide rainwater into the drainage ditches, allowing for rapid drainage and preventing road flooding. This addresses the problems of poor drainage performance and short service life in existing permeable pavements. However, the permeable cover plate beneath the base layer is prone to damage during construction and road use, leading to structural damage. The drainage ditches lack sealing measures, causing rainwater to remain submerged in the base layer for extended periods, affecting the strength of the permeable and water-retaining polymer base layer. Furthermore, the drainage ditches are below the road surface, requiring road surface demolition for maintenance, resulting in high maintenance costs.

[0005] Patent 202311858543.2 describes a road surface structure consisting of, from bottom to top: a soil layer, a permeable and water-retaining geopolymer base layer, a porous permeable subbase, and an impermeable surface layer. The surface layer has higher strength than the permeable subbase and can directly withstand vehicle pressure. Water collection ditches are located on both sides of the permeable subbase, above the permeable and water-retaining geopolymer base layer, and their collection spaces are connected to the sides of the permeable subbase. This design addresses the problems of reduced surface strength, lower load-bearing capacity, increased road damage, and high maintenance costs associated with porous permeable structures. However, the addition of water collection ditches along the roadside encroaches on green space and pedestrian walkways; the large amount of concrete work required for these ditches is also prohibitively expensive; furthermore, heavy rainfall can lead to road flooding. Summary of the Invention

[0006] One of the purposes of this application is to provide a method for using a permeable water storage road and water storage system, which can achieve rainwater collection and utilization with zero energy consumption. It can be widely used in roads, squares and other places, effectively regulating and utilizing rainwater resources while reducing the operation and maintenance costs of urban roads, and greatly contributing to the construction of sponge cities.

[0007] The technical solution of this application is:

[0008] A permeable and water-storing road includes a permeable and water-storing road body, a green belt planting structure, a water collection structure, and a water storage structure. The water collection structure is located along the length of the permeable and water-storing road body on one side and is connected to the permeable and water-storing road body, the green belt planting structure, and the water storage structure, respectively. It is used to collect rainwater infiltrating from the permeable and water-storing road body and the green belt planting structure, and to transport the collected rainwater to the water storage structure for storage. The water storage structure is located in the middle of the water collection structure and is connected to the water collection structure and the green belt planting structure, respectively. It is used to irrigate the plant roots in the green belt planting structure with rainwater collected from the water collection structure. The green belt planting structure is located along the length of the permeable and water-storing road body on one side and surrounds the outer periphery of the water collection structure.

[0009] As one technical solution of this application, the permeable road body includes, from bottom to top, an earthen roadbed, an impermeable concrete subbase, a permeable polymer base layer, and a permeable asphalt surface layer. A concrete backrest and a curb are laid from bottom to top on the permeable polymer base layer, with both the concrete backrest and the curb located on one side of the permeable asphalt surface layer. The concrete backrest has inclined reserved channels inside. The top end of the reserved channels is connected to the permeable polymer base layer, and the bottom end is connected to the water collection structure.

[0010] As a technical solution of this application, the permeable asphalt surface layer, the permeable and water-retaining geopolymer base layer, the impermeable concrete subbase layer, and the earth subgrade are all provided with cross slopes so that rainwater can flow into the water collection structure and rainwater can infiltrate into the permeable and water-retaining geopolymer base layer through the permeable asphalt surface layer.

[0011] As one technical solution of this application, the permeable and water-retaining geopolymer base layer is laid by mixing gel and open-graded crushed stone aggregate together to form a base layer, and the gel is made by using metakaolin as aluminum silicon oxide and a mixed solution of sodium hydroxide, sodium silicate solution and water as an alkali activator.

[0012] As one technical solution of this application, the reserved channels are multiple and are spaced apart in the concrete backing along the length direction of the permeable water storage road body.

[0013] As one technical solution of this application, the green belt planting structure includes a planting soil layer, a first impermeable geotextile, and a first permeable geotextile; the planting soil layer is set along the length direction of the permeable water storage road body on one side of the permeable water storage road body and surrounds the outer periphery of the water collection structure; the first impermeable geotextile is laid at the interface between the planting soil layer and the permeable water storage road body, and extends from the bottom of the planting soil layer to the bottom of the concrete backing, to prevent rainwater in the planting soil layer from seeping into the soil subgrade; the first permeable geotextile is laid at the interface where the reserved channel connects to the water collection structure, to filter rainwater flowing into the water collection structure from the permeable water storage geopolymer base layer.

[0014] As one technical solution of this application, the water collection structure includes a gravel layer, a second impermeable geotextile, and a second permeable geotextile; the gravel layer is disposed along the length direction of the permeable water storage road body on one side of the permeable water storage road body, and is connected to the planting soil layer and the water storage structure respectively; the second impermeable geotextile is laid along the length direction of the permeable water storage road body at the bottom and side wall of the interface between the gravel layer and the planting soil layer, to prevent rainwater in the gravel layer from seeping into the planting soil layer, so that the rainwater in the gravel layer can flow into the water storage structure; the second permeable geotextile is laid on top of the gravel layer.

[0015] As one technical solution of this application, the water storage structure includes a water storage tank; an irrigation pipe is connected to the lower part of one side of the water storage tank, which is arranged along the length of the permeable water storage road body. Multiple capillary ropes are connected to the irrigation pipe, spaced apart along the length of the permeable water storage road body. The tops of the capillary ropes extend from the green belt planting structure to the water collection structure, used for irrigating the plant roots along the road. Multiple reserved holes for collecting rainwater are opened in the upper part of the water storage tank, and these reserved holes are connected to the water collection structure. The bottom of the water storage tank is connected to a municipal rainwater pipe through an outlet pressure valve, and an inlet pressure valve is provided at the bottom, and a water supply valve is provided at the top. An openable and closable cover is provided on the top of the water storage tank.

[0016] A method for using a water storage system, comprising regulating water storage using the permeable water storage road described above, including:

[0017] When rainfall is light, water seeps into the permeable polymer base layer through the permeable asphalt surface layer of the permeable road body. At this time, the inlet pressure valve in the water storage structure is closed, and the permeable polymer base layer begins to store water. As rainfall continues, the water level in the permeable polymer base layer rises continuously. When the water level is higher than the reserved holes on the concrete backrest of the permeable road body, rainwater flows into the gravel layer in the water collection structure through the reserved holes and flows into the water storage tank in the water storage structure. At this time, the inlet pressure valve and outlet pressure valve are closed, the permeable polymer base layer is full of water, and the water storage tank begins to store water. As rainfall gradually increases, the water level in the water storage tank reaches the reserved holes. At this time, the inlet pressure valve and outlet pressure valve automatically open, and rainwater begins to flow into the municipal stormwater pipe through the outlet pressure valve.

[0018] When it is not raining, the rainwater in the reservoir automatically irrigates the plant roots in the planting soil of the green belt planting structure through the irrigation pipe and using the capillary rope.

[0019] When there is no rain for a long period of time and the water storage tank is empty, water is replenished to the water storage tank through the water supply valve in the water storage structure.

[0020] The beneficial effects of this application are:

[0021] This application provides a method for using a permeable water storage road and water storage system, which can achieve rainwater collection and utilization with zero energy consumption. It can be widely used in roads, squares and other places, effectively regulating and utilizing rainwater resources while reducing the operation and maintenance costs of urban roads, and greatly contributing to the construction of sponge cities.

[0022] (1) The overall system is constructed with a permeable and water-retaining geopolymer base layer and a water storage structure is set along the road green belt to solve the problem that the road surface cannot store rainwater and the city is prone to waterlogging, thereby increasing the rainwater utilization rate and reducing the investment cost and subsequent operation and management costs.

[0023] (2) The water storage structure adopts a water storage tank, and inlet pressure valve and outlet pressure valve are used at the inlet and outlet. It can solve the problem of road water accumulation caused by heavy rainfall, and can open different water flow paths for different rainfall intensities, playing a multi-level regulation and storage function.

[0024] (3) It can replenish water to the reservoir by using water supply pipes and water supply valves, and can also use capillary ropes to connect the green belt planting structure and the water storage structure, and use the water in the water storage structure to automatically irrigate the plant roots through capillary action, thus solving the problem of needing to manually replenish water when there is no rain for a long time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the first cross section of a permeable water storage road provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the second cross section of a permeable water storage road provided in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the longitudinal section of a permeable water storage road provided in an embodiment of this application.

[0029] Icons: 1-Permeable asphalt surface layer; 2-Permeable and water-retaining geopolymer base layer; 3-Imperible concrete subbase; 4-Curve stone; 5-Concrete backing; 6-Reserved duct; 7-Earth subgrade; 8-Planting soil layer; 9-First impermeable geotextile; 10-First permeable geotextile; 11-Second impermeable geotextile; 12-Gravel layer; 13-Second permeable geotextile; 14-Water storage tank; 15-Irrigation pipe; 16-Capillary rope; 17-Reserved hole; 18-Water supply valve; 19-Inlet pressure valve; 20-Outlet pressure valve; 21-Modible cover plate; 22-Municipal rainwater pipe. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only used to facilitate the description of this application and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, in this application, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Example:

[0038] Please refer to Figure 1 (Refer to) Figures 2 to 3 This application provides a permeable water storage road, which includes a permeable water storage road body, a green belt planting structure, a water collection structure, and a water storage structure. The water collection structure is located along the length of the permeable water storage road body on one side and is connected to the permeable water storage road body, the green belt planting structure, and the water storage structure. It collects rainwater infiltrating from the permeable water storage road body and the green belt planting structure and transports the collected rainwater to the water storage structure for storage. Simultaneously, the water storage structure is located in the middle of the water collection structure and is connected to both the water collection structure and the green belt planting structure. It irrigates the plant roots in the green belt planting structure with rainwater collected from the water collection structure. Furthermore, the green belt planting structure is located along the length of the permeable water storage road body on one side and surrounds the outer periphery of the water collection structure.

[0039] Furthermore, the permeable road body includes, from bottom to top, an earthen roadbed 7, an impermeable concrete subbase 3, a permeable polymer base 2, and a permeable asphalt surface layer 1. On the permeable polymer base 2, from bottom to top, a concrete backrest 5 and a curb stone 4 are laid, with both the concrete backrest 5 and the curb stone 4 located on one side of the permeable asphalt surface layer 1. The interior of the concrete backrest 5 is provided with inclined reserved channels 6. The top of the reserved channels 6 is connected to the permeable polymer base 2, and the bottom is connected to the water collection structure.

[0040] It should be noted that the permeable asphalt surface layer 1, the permeable and water-retaining polymer base layer 2, the impermeable concrete subbase layer 3, and the earthen roadbed 7 are all equipped with cross slopes to allow rainwater to flow into the water collection structure and to allow rainwater to infiltrate into the permeable and water-retaining polymer base layer 2 through the permeable asphalt surface layer 1. Meanwhile, the permeable and water-retaining polymer base layer 2 is laid out by mixing gel with approximately 10mm open-graded crushed stone aggregate. The gel is made using metakaolin as an aluminum-silicon oxide and a mixed solution of sodium hydroxide, sodium silicate, and water as an alkali activator. Therefore, this permeable and water-retaining polymer base layer 2 has advantages such as acid resistance and high strength, forming a load-bearing and water-retaining base layer. The impermeable concrete subbase 3 prevents rainwater from naturally seeping into the soil subgrade 7, ensuring the stability of the soil subgrade 7, while also ensuring the water storage function of the permeable polymer base layer 2; the curbstone 4 prevents vehicles from driving into the topsoil layer 8, ensuring driving safety; the reserved channels 6 are multiple and are spaced apart in the concrete backrest 5 along the length of the permeable road body; the concrete backrest 5 ensures the stability of the curbstone 4, and the reserved channels 6 ensure that rainwater with large rainfall volume can flow into the gravel layer 12 after the permeable polymer base layer 2 is full, and finally flow into the water storage tank 14 through the water collection structure.

[0041] The green belt planting structure includes a planting soil layer 8, a first impermeable geotextile 9, and a first permeable geotextile 10. The planting soil layer 8 is set along the length of the permeable road body on one side and surrounds the outer periphery of the gravel layer 12. The first impermeable geotextile 9 is laid at the interface between the planting soil layer 8 and the permeable road body, and extends from the bottom of the planting soil layer 8 to the bottom of the concrete backing 5. It is used to prevent rainwater in the planting soil layer 8 from seeping into the soil subgrade 7, so as to ensure the stability of the soil subgrade 7 and ensure the moisture of the planting soil layer 8. The first permeable geotextile 10 is laid at the interface where the reserved channel 6 connects to the gravel layer 12, so as to filter the rainwater flowing into the gravel layer 12 from the permeable polymer base layer 2. It can ensure that the water stored in the permeable polymer base layer 2 can flow into the gravel layer 12 through the reserved channel 6, while preventing debris from entering the gravel layer 12 and causing damage to the gravel layer 12.

[0042] In addition, the water collection structure includes a gravel layer 12, a second impermeable geotextile 11, and a second permeable geotextile 13. The gravel layer 12 is located on one side of the permeable water storage road body along its length and is connected to the planting soil layer 8 and the water storage tank 14. It has good permeability, allowing rainwater to flow into the water storage tank 14 through the reserved holes 17 along the gravel layer 12. The second impermeable geotextile 11 is laid on the gravel layer 12 along its length. At the bottom and side walls of the interface between the gravel layer 12 and the planting soil layer 8, rainwater in the gravel layer 12 is prevented from seeping into the planting soil layer 8, so that the rainwater in the gravel layer 12 can flow into the water storage tank 14; the second permeable geotextile 13 is laid on top of the gravel layer 12, which allows rainwater in the planting soil layer 8 to flow into the gravel layer 12 from the second permeable geotextile 13. At the same time, when the rainfall is large, it can flow from the gravel layer 12 to the planting soil layer 8 and finally be discharged into the municipal stormwater pipe 22.

[0043] Meanwhile, the water storage structure includes a precast concrete water storage tank 14, which is located at the lowest point of the road. Rainwater is collected and stored through pre-drilled holes 17. An irrigation pipe 15, extending along the length of the permeable road, is connected to the lower side of the water storage tank 14. Multiple capillary ropes 16, spaced apart along the length of the permeable road, are connected to the irrigation pipe 15. The tips of the capillary ropes 16 extend from the planting soil layer 8 into the gravel layer 12, used for irrigating the plant roots along the road. Multiple collection points are located at the top of the water storage tank 14. The reserved holes 17 for rainwater are connected to the water collection structure; the bottom of the water storage tank 14 is connected to the municipal rainwater pipe 22 through the outlet pressure valve 20, and an inlet pressure valve 19 is set at the bottom and a water supply valve 18 is set at the top. When there is no rain for a long time, the water supply valve 18 can be opened to manually replenish water and the water storage tank 14 can automatically irrigate the plants along the line, reducing manual irrigation; the top of the water storage tank 14 is equipped with an openable and closable movable cover 21, which is installed on the water storage tank 14 by tenon and mortise and tenon joints for later maintenance.

[0044] Furthermore, this embodiment also provides a method for using a water storage system, which employs the above-mentioned permeable water storage road to regulate water storage, and mainly includes:

[0045] When rainfall is light, water seeps through the permeable asphalt surface layer 1 into the permeable polymer base layer 2. At this time, the inlet pressure valve 19 in the water storage structure is closed, and the permeable polymer base layer 2 begins to store water. As rainfall continues, the water level in the permeable polymer base layer 2 rises continuously. When the water level is higher than the reserved channel 6 on the concrete backrest 5 in the permeable road body, rainwater flows into the gravel layer 12 through the reserved channel 6 and flows into the water storage tank 14 along the gravel layer 12. At this time, the inlet pressure valve 19 and the outlet pressure valve 20 are closed, the permeable polymer base layer 2 is full of water, and the water storage tank 14 begins to store water. When rainfall gradually increases, the water level in the water storage tank 14 reaches the reserved channel 6. At this time, the inlet pressure valve 19 and the outlet pressure valve 20 automatically open, and rainwater begins to flow into the municipal rainwater pipe 22 through the outlet pressure valve 20.

[0046] When it is not raining, rainwater in the reservoir 14 automatically irrigates the plant roots in the planting soil through the irrigation pipe 15 and the capillary rope 16.

[0047] When there is no rain for a long period of time and the water storage tank 14 is empty, water is replenished to the water storage tank 14 through the water supply valve 18 in the water storage structure.

[0048] In summary, this application provides a permeable water-storage road and a method for using a water storage system, which can achieve rainwater collection and utilization with zero energy consumption. It can be widely used in roads, squares, and other places, effectively regulating and utilizing rainwater resources while reducing urban road operation and maintenance costs, and greatly contributing to the construction of sponge cities. The overall system structure adopts a permeable geopolymer base layer 2, and water storage structures are set along the road green belt, solving the problem of road surfaces being unable to store rainwater and urban flooding, increasing rainwater utilization rate, and reducing investment costs and subsequent operation and management expenses. Meanwhile, its water storage structure adopts a water storage tank 14, and uses an inlet pressure valve 19 and an outlet pressure valve 20 at the inlet and outlet. It can solve the problem of road water accumulation caused by heavy rainfall, and can open different water flow paths for different rainfall intensities, playing a multi-functional regulation and storage role. In addition, it can use water supply pipes and water supply valves 18 to replenish water to the water storage tank 14, and can also use capillary ropes 16 to connect the green belt planting structure and the water storage structure, and use the water in the water storage structure to automatically irrigate the plant roots through capillary action, solving the problem of needing to manually replenish water when there is no rain for a long time.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A permeable water storage road, characterized in that, The system includes a permeable and water-retaining road body, a green belt planting structure, a water collection structure, and a water storage structure. The water collection structure is located along the length of the permeable and water-retaining road body on one side and is connected to the permeable and water-retaining road body, the green belt planting structure, and the water storage structure. It collects rainwater infiltrating from the permeable and water-retaining road body and the green belt planting structure, and transports the collected rainwater to the water storage structure for storage. The water storage structure is located in the middle of the water collection structure and is connected to both the water collection structure and the green belt planting structure. It irrigates the plant roots in the green belt planting structure with rainwater collected from the water collection structure. The green belt planting structure is located along the length of the permeable and water-retaining road body on one side and surrounds the outer periphery of the water collection structure. The permeable and water-retaining road body comprises, from bottom to top, a series of... The road consists of an earthen subgrade, an impermeable concrete base layer, a permeable polymer base layer, and a permeable asphalt surface layer. A concrete backrest and curbstone are laid sequentially from bottom to top on the permeable polymer base layer, with both the concrete backrest and the curbstone located on one side of the permeable asphalt surface layer. The concrete backrest has inclined pre-reserved channels inside; the top of the pre-reserved channels connects to the permeable polymer base layer, and the bottom connects to the water collection structure. The green belt planting structure includes a planting soil layer, a first impermeable geotextile, and a first permeable geotextile. The planting soil layer is located along the length of the permeable road body on one side and surrounds the outer periphery of the water collection structure. The first impermeable geotextile is laid at the interface between the planting soil layer and the permeable road body, extending from the bottom of the planting soil layer to the bottom of the concrete backrest, to prevent rainwater from the planting soil layer from seeping into the earthen subgrade. The first permeable geotextile is laid at the interface where the reserved channel connects to the water collection structure to filter rainwater flowing into the water collection structure from the permeable and water-storage geopolymer base layer. The water collection structure includes a gravel layer, a second impermeable geotextile, and a second permeable geotextile. The gravel layer is located along the length of the permeable and water-storage road body on one side of the road body and is connected to the planting soil layer and the water storage structure. The second impermeable geotextile is laid along the length of the permeable and water-storage road body at the bottom and sidewalls of the interface between the gravel layer and the planting soil layer to prevent rainwater in the gravel layer from seeping into the planting soil layer, so that the rainwater in the gravel layer can flow into the water storage structure. The second permeable geotextile is laid on top of the gravel layer.

2. The permeable water storage road according to claim 1, characterized in that, The permeable asphalt surface layer, the permeable and water-retaining polymer base layer, the impermeable concrete subbase layer, and the earth subgrade are all provided with cross slopes to allow rainwater to flow into the water collection structure and to allow rainwater to infiltrate into the permeable and water-retaining polymer base layer through the permeable asphalt surface layer.

3. The permeable water storage road according to claim 1, characterized in that, The permeable and water-retaining geopolymer base layer is laid by mixing gel with open-graded crushed stone aggregate. The gel is made by using metakaolin as an aluminum-silicon oxide and a mixed solution of sodium hydroxide, sodium silicate solution and water as an alkali activator.

4. The permeable water storage road according to claim 1, characterized in that, The reserved channels are multiple and are spaced apart in the concrete backing along the length of the permeable water storage road body.

5. The permeable water storage road according to claim 1, characterized in that, The water storage structure includes a water storage tank; an irrigation pipe is connected to the lower part of one side of the water storage tank, which is arranged along the length of the permeable water storage road body. Multiple capillary ropes are connected to the irrigation pipe, spaced apart along the length of the permeable water storage road body. The tips of the capillary ropes extend from the green belt planting structure to the water collection structure, used for irrigating the plant roots along the road. Multiple reserved holes for collecting rainwater are opened in the upper part of the water storage tank, and these reserved holes are connected to the water collection structure. The bottom of the water storage tank is connected to the municipal rainwater pipe through an outlet pressure valve, and an inlet pressure valve is provided at the bottom, and a water supply valve is provided at the top. An openable and closable cover is provided on the top of the water storage tank.

6. A method of using a water storage system, comprising regulating water storage using a permeable water storage road as described in any one of claims 1 to 5, characterized in that, include: When rainfall is light, water seeps into the permeable polymer base layer through the permeable asphalt surface layer of the permeable road body. At this time, the inlet pressure valve in the water storage structure is closed, and the permeable polymer base layer begins to store water. As rainfall continues, the water level in the permeable polymer base layer rises continuously. When the water level is higher than the reserved holes on the concrete backrest of the permeable road body, rainwater flows into the gravel layer in the water collection structure through the reserved holes and flows into the water storage tank in the water storage structure. At this time, the inlet pressure valve and outlet pressure valve are closed, the permeable polymer base layer is full of water, and the water storage tank begins to store water. As rainfall gradually increases, the water level in the water storage tank reaches the reserved holes. At this time, the inlet pressure valve and outlet pressure valve automatically open, and rainwater begins to flow into the municipal stormwater pipe through the outlet pressure valve. When it is not raining, the rainwater in the reservoir automatically irrigates the plant roots in the planting soil of the green belt planting structure through the irrigation pipe and using the capillary rope. When there is no rain for a long period of time and the water storage tank is empty, water is replenished to the water storage tank through the water supply valve in the water storage structure.

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