Combined assembly type drainage curb

Abstract

The utility model discloses a combined assembly type drainage curb, including the curb body of prefabrication, is equipped with drainage hole, internal drainage passage and the intercommunication drainage system of connecting drain pipe on the body to be equipped with the luminous warning tape made of light storage type luminous material. The curb body is composed of L type structure by vertical curbstone and flat curbstone, and the gutter bottom of flat curbstone top surface is equipped with the mounting groove, and the water permeable concrete block is arranged in it, and the drainage hole is distributed in the mounting groove side wall and vertical curbstone side. The utility model discloses through gutter, water permeable concrete block, vertical drainage groove, taper drainage hole, internal drainage passage and the intercommunication drainage system of adjustable drain pipe, can gather and remove the road surface water quickly, and effectively alleviate the urban waterlogging, and simultaneously through the luminous warning tape of built -in initiative luminous at night, the road traffic safety is improved significantly. The utility model has the advantages of high drainage efficiency, strong warning, convenient maintenance and convenient construction.

Description

Technical Field

[0001] This utility model relates to a modular prefabricated drainage curb. Background Technology

[0002] Curbstones, also known as curb stones or kerbstones, are marker stones placed between the road surface and other structures to distinguish between carriageways, sidewalks, and green space boundaries. Traditional curbstones are mostly made of concrete or stone, and current technologies generally have the following core problems: 1. Most curb stones only meet the basic separation function and do not have active drainage function. A few curb stones use porous concrete for water seepage, but the seepage is slower than active drainage and basically cannot solve the problem of water accumulation on municipal roads.

[0003] 2. Most curb stones have poor nighttime visibility, making it easy for pedestrians to trip and for drivers of approaching vehicles to accidentally hit them.

[0004] To address the aforementioned technical issues, this paper proposes a modular prefabricated drainage curb. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a combined prefabricated drainage curb stone that has both efficient active drainage function and active light-emitting warning function at night, so as to solve the problems of existing curb stone drainage relying on slow infiltration, low efficiency, poor visibility at night, and safety hazards.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a combined assembled drainage curbstone, including a curbstone body, a drainage hole provided on the curbstone body, the drainage hole leading to a drainage channel provided inside the curbstone body, and a drainage pipe connected to the drainage channel; the curbstone body is also provided with a luminous warning strip.

[0007] Furthermore, the curbstone body is a precast concrete component; the drainage holes, drainage channels, and drainage pipes constitute a connected drainage system for quickly draining surface runoff; and the luminous warning strip is a structure made of photoluminescent material.

[0008] Furthermore, the curbstone body is composed of a vertical curbstone and a flat curbstone, with the flat curbstone fixedly installed on the bottom side of one side of the vertical curbstone, so that the curbstone body as a whole forms an L-shaped structure; wherein, the drainage channel is arranged inside the vertical curbstone along the length direction of the vertical curbstone.

[0009] Furthermore, the top surface of the flat curbstone is provided with a water channel running through the curbstone body along its length. The bottom of the water channel is provided with a recessed mounting groove. The interior of the mounting groove is provided with a permeable concrete block. Several drainage holes are distributed on the side of the mounting groove near the drainage channel and on the side of the upright curbstone above the water channel. The porosity of the permeable concrete block is 15%-25%, and the compressive strength is not less than 15MPa. Several spaced pads are fixedly provided on the bottom of the mounting groove to raise and support the bottom of the permeable concrete block. The pads are prefabricated integrally with the mounting groove, and a bottom drainage gap is formed between adjacent pads.

[0010] Furthermore, vertical drainage channels are provided on both opposite walls of the installation groove, and the height of the vertical drainage channels is equal to the height of the installation groove; the vertical drainage channels extend through the upper and lower ends of the installation groove and also serve as openings for disassembling the permeable concrete blocks.

[0011] Furthermore, the permeable concrete block has a positioning hole on the side facing the drainage hole, and the mounting groove has a positioning pin hole on the groove surface where the drainage hole is located. The other end of the positioning pin hole is connected to the channel wall of the drainage channel. A positioning pin is inserted into the positioning hole along the drainage channel through the positioning pin hole. The positioning pin and the positioning pin hole are interference fit, and the positioning hole and the positioning pin are clearance fit.

[0012] Furthermore, the drain hole is a tapered hole that is narrow on the outside and wide on the inside, wherein the drain hole is connected to the drain channel through the wide opening on its inner side; the inner wall of the drain hole has a smooth transition and its expansion angle is 10°~25°.

[0013] Furthermore, the luminous warning strip is fixedly installed on the upper edge of the side of the upright curb stone near the flat curb stone, and is arranged in a strip shape along the length of the upright curb stone; the initial brightness of the luminous warning strip is greater than 1000 mcd / m², and the afterglow brightness is not less than 3 mcd / m² after 10 hours.

[0014] Furthermore, the curbstone body has an inspection port at the top of the drainage channel, the inspection port has an openable top cover, and the top cover has a knob for controlling the opening and closing of the top cover; a sealing structure is provided between the top cover and the inspection port, and the knob is locked to the inspection port through an internal crank mechanism and a stepped structure inside the inspection port.

[0015] Furthermore, the drain pipe includes a vertical drain pipe connected to the inner bottom of the drain channel, a vertical telescopic pipe connected to the bottom of the vertical drain pipe, a 90-degree elbow connected to the bottom of the vertical telescopic pipe, a horizontal telescopic pipe connected to the other end of the elbow, and a horizontal drain pipe connected to the other end of the horizontal telescopic pipe; the vertical telescopic pipe and the horizontal telescopic pipe are rubber expansion joints or stainless steel corrugated pipes, and the overall drain pipe is adjustable for ±50mm installation error.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Efficient drainage to solve urban flooding: The interconnected drainage system, consisting of water channels, permeable concrete blocks, vertical drainage channels, conical drainage holes, internal drainage channels, and adjustable drainage pipes, can quickly collect and remove surface water, far exceeding traditional drainage methods that rely on infiltration, effectively alleviating urban flooding problems.

[0017] 2. Proactive warning for enhanced safety: The built-in photoluminescent warning strip can actively emit light at night or in low-light conditions, clearly marking the outline of the curbstone, significantly improving the warning effect on pedestrians and vehicle drivers, and reducing tripping and collision accidents.

[0018] 3. Easy to maintain and durable: A dedicated inspection port and unique top cover locking structure facilitate cleaning and maintenance of the internal drainage channels. The permeable concrete blocks are secured with positioning pins and can be disassembled and replaced using vertical drainage channels, simplifying maintenance and reducing long-term operating costs.

[0019] 4. Prefabricated design, convenient construction: Adopting a factory prefabrication and on-site assembly mode, the expansion pipe design in the drainage pipe system can adjust the installation error by ±50mm, which improves construction efficiency and quality, and reduces on-site wet work and the impact on traffic.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 .

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 .

[0023] Figure 3 This is a partial cross-sectional view under the explosive state of an embodiment of the present invention. Figure 1 .

[0024] Figure 4 This is a partial cross-sectional view under the explosive state of an embodiment of the present invention. Figure 2 .

[0025] Figure 5 This is a cross-sectional view of an embodiment of the present utility model.

[0026] In the diagram: 1. Drainage hole; 2. Drainage channel; 3. Illuminated warning strip; 4. Anti-slip groove; 5. Vertical curb; 6. Flat curb; 7. Water channel; 8. Installation groove; 9. Permeable concrete block; 10. Pad block; 11. Vertical drainage channel; 12. Positioning insertion hole; 13. Positioning pin hole; 14. Positioning pin; 15. Inspection port; 16. Top cover; 17. Knob; 18. Finger grip groove; 19. Rotating shaft; 20. Hockey stick; 21. Supporting step; 22. Vertical drainage pipe; 23. Vertical telescopic pipe; 24. Elbow; 25. Horizontal telescopic pipe; 26. Horizontal drainage pipe. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] like Figures 1-5 As shown, this embodiment provides a modular prefabricated drainage curbstone, installed at the edge of a driveway to drain rainwater from the road. The curbstone is prefabricated in sections using vertical molding in a factory. Each section includes a curbstone body, on which a drainage hole 1 is provided. The drainage hole leads to a drainage channel 2 provided inside the curbstone body, and a drainage pipe is connected to the drainage channel. An illuminated warning strip 3 is also provided on the curbstone body.

[0031] In this embodiment of the utility model, the curbstone body is a precast concrete component; the drainage hole, drainage channel and drainage pipe constitute a connected drainage system for quickly draining surface runoff; the luminous warning strip is a structure made of photoluminescent material and is covered with glass microbeads.

[0032] In this embodiment of the utility model, anti-slip grooves 4 are provided on the front and rear side walls and the bottom surface of the curbstone body, which has a good anti-slip effect.

[0033] In this embodiment of the invention, the luminescent warning strip is made of a photoluminescent material, such as a photoluminescent coating. This coating typically consists of a film-forming substance (binder), fluorescent pigments (such as zinc sulfide, rare earth aluminates, etc.), and fillers. The film-forming substance ensures the coating adheres to the substrate surface, and the fluorescent pigment stores energy by absorbing external light energy and releases visible light in the dark.

[0034] In this embodiment of the invention, the corners inside the drainage channel are chamfered.

[0035] In this embodiment of the utility model, the curbstone body is composed of a vertical curbstone 5 and a flat curbstone 6. The flat curbstone is fixedly disposed on the bottom side of one side of the vertical curbstone, so that the curbstone body as a whole forms an L-shaped structure. The drainage channel is disposed inside the vertical curbstone along the length direction of the vertical curbstone.

[0036] The curbstone body is made of C30 or higher grade precast concrete and internally reinforced with N1~N3 structural steel bars.

[0037] In this embodiment of the utility model, the top surface of the flat curbstone is provided with a water channel 7 that runs through the curbstone body along its length. The bottom of the water channel is slightly lower than the road edge to facilitate road drainage into the water channel. The bottom of the water channel is provided with two downwardly recessed rectangular mounting grooves 8. Each mounting groove is provided with a rectangular permeable concrete block 9. The drainage holes are numerous and distributed on the side of the mounting groove near the drainage channel and on the side of the upright curbstone above the water channel. The porosity of the permeable concrete block is 15%-25%, and the compressive strength is not less than 15MPa.

[0038] In this embodiment of the utility model, a plurality of spaced pads 10 are fixedly provided on the bottom of the installation groove to raise and support the bottom of the permeable concrete block; the pads are prefabricated integrally with the installation groove, and bottom drainage gaps are formed between adjacent pads to facilitate drainage.

[0039] In this embodiment of the utility model, the bottom of the mounting groove slopes downwards from top to bottom towards the drainage channel, and the slope helps the water flow smoothly to the drainage hole.

[0040] In this embodiment of the invention, the bottom wall of the drain hole slopes downwards along the direction from the mounting groove to the drain channel, and the slope helps the water flow smoothly into the drain channel.

[0041] In this embodiment of the utility model, vertical drainage channels 11 are provided on both opposite walls of the mounting groove, and the height of the vertical drainage channels is equal to the height of the mounting groove; the vertical drainage channels pass through the upper and lower ends of the mounting groove and also serve as the disassembly port for the permeable concrete block.

[0042] Vertical drainage channels can be used as water channels and also as access points for disassembling precast permeable concrete blocks.

[0043] In this embodiment of the utility model, the permeable concrete block is provided with a positioning insertion hole 12 on the side facing the drainage hole, and the mounting groove is provided with a positioning pin hole 13 on the groove surface where the drainage hole is located. The other end of the positioning pin hole is connected to the channel wall of the drainage channel. A positioning pin 14 is inserted into the positioning insertion hole along the drainage channel through the positioning pin hole. The positioning pin and the positioning pin hole are interference fit, and the positioning insertion hole and the positioning pin are clearance fit. Slight force is required to insert or remove the positioning pin to prevent the positioning pin from falling off easily.

[0044] In this embodiment of the utility model, the drainage hole is a tapered hole that is narrow on the outside and wide on the inside. The drainage hole is connected to the drainage channel through the wide opening on its inner side, and the narrow opening on the outside can block large particles of impurities from entering the drainage hole. The inner wall of the drainage hole has a smooth transition, and its expansion angle is 10°~25°, preferably 15°.

[0045] In this embodiment of the invention, several drainage holes are arranged in a rectangular array or a plum blossom-shaped array.

[0046] In this embodiment of the utility model, the luminous warning strip is fixedly installed on the upper edge of the side of the upright curb stone near the flat curb stone, and is arranged in a strip shape along the length of the upright curb stone; the initial brightness of the luminous warning strip is greater than 1000mcd / m², and the afterglow brightness is not less than 3mcd / m² after 10 hours.

[0047] In this embodiment of the utility model, an inspection port 15 is provided on the top of the drainage channel on the curbstone body, and an operable top cover 16 is provided on the inspection port. A knob 17 for controlling the top cover opening and closing is provided on the top surface of the top cover, and the inspection port can be opened for inspection and flushing at any time.

[0048] The top surface of the top cover is provided with two oppositely arranged finger grip grooves 18, which are convenient for fingers to insert and put on the top cover.

[0049] The knob is fixedly connected to a vertical rotating shaft 19 at its bottom. The rotating shaft is mounted on the top cover and rotates. The bottom of the rotating shaft is fixedly connected to a hockey stick 20 located below the top cover.

[0050] A support step 21 is provided at the connection between the inspection port and the drainage channel to support the bottom of the top cover of the inspection port; the distance between two opposing support steps (step structure) in the width direction of the inspection port is less than the length of the lateral span of the hockey stick, so that the hockey stick can be rotated and locked at the bottom of the two support steps.

[0051] When the access panel needs to be sealed, simply put on the top cover and rotate the knob 90 degrees so that the two ends of the hockey stick are locked at the bottom of the two support steps. At this time, the top cover cannot be opened. To open the top cover, rotate the knob 90 degrees so that the two ends of the hockey stick are not locked at the bottom of the two support steps. Then, grip the finger grips at both ends with two fingers to lift the top cover.

[0052] When installing the permeable concrete block in the installation groove, simply place the side with the positioning hole facing the drainage hole side, ensuring the positioning hole is at the top. After placement, open the top cover on the inspection port and insert the positioning pin at the corresponding position of the positioning hole. At this time, the permeable concrete block is positioned in the installation groove by the positioning pin. To replace the permeable concrete block, lift the top cover and pull out the positioning pin. Then, use two steel bars or other tools with 90-degree small hooks to insert into the vertical drainage groove. After the tools are inserted to the bottom of the vertical drainage groove, rotate the small hooks 90 degrees towards the center of the installation groove. Then, lift both tools upwards simultaneously to lift the precast permeable concrete block for easy removal.

[0053] In this embodiment of the utility model, the drain pipe includes a vertical drain pipe 22 connected to the inner bottom of the drain channel, a vertical telescopic pipe 23 connected to the bottom of the vertical drain pipe, a 90-degree elbow 24 connected to the bottom of the vertical telescopic pipe, a horizontal telescopic pipe 25 connected to the other end of the elbow, and a horizontal drain pipe 26 connected to the other end of the horizontal telescopic pipe, so as to realize the diversion and discharge of water. The telescopic pipe is used to adjust the length error of the pipe installation.

[0054] The vertical and horizontal expansion joints are rubber expansion joints or stainless steel corrugated pipes, and the overall drainage pipe can be adjusted for an installation error of ±50mm.

[0055] A method for using a modular prefabricated drainage curb includes the following steps: 1. Active and rapid drainage of surface runoff: The water on the road surface first flows into the drainage ditch, and then flows into the installation trough through the permeable concrete blocks and vertical drainage channels. It then flows into the drainage channel through the drainage holes on the inner side wall of the installation trough, and is finally discharged through the drainage pipe. If the water level on the road surface is high, this part of the water can also be discharged into the drainage channel through the drainage holes on the side of the upright curb above the flat curb. 2. Proactive warning and enhanced safety: The built-in photoluminescent warning strip can actively emit light at night or in low-light conditions, clearly marking the outline of the curbstone, significantly improving the warning effect on pedestrians and vehicle drivers, and reducing tripping and collision accidents.

[0056] A maintenance method for a modular prefabricated drainage curbstone includes disassembly and installation steps. It allows for convenient replacement via the use of inspection ports, locating pins, and vertical drainage channels. Specifically, it includes the following steps: Disassembly steps: S1. Open the top cover of the inspection port located at the top of the drainage channel; S2. Reach inside the drainage channel and pull out the positioning pin inserted into the positioning hole of the permeable concrete block. S3. Insert a tool with a hook into the vertical drainage channel on the side wall of the installation groove to the bottom of the permeable concrete block; S4. Rotate the tool so that the hook catches the bottom of the permeable concrete block, and then pull the tool upward to remove the permeable concrete block from the installation groove. Installation steps: S5. Place the new permeable concrete block into the installation groove and ensure that the positioning holes on it are aligned with the positioning pin holes on the groove wall. S6. From inside the drainage channel, pass the positioning pin through the positioning pin hole and insert it into the positioning socket to fix the permeable concrete block. S7. Close and lock the top cover.

[0057] This modular prefabricated drainage curb has good prospects for promotion in municipal and landscaping fields.

[0058] In this embodiment of the invention, the permeable concrete block is composed of aggregate, cementitious material, admixture, and built-in permeable channels. The aggregate uses basalt with a single particle size or narrow gradation, close to cubic, multi-faceted, and high hardness and compressive strength, typically with a Mohs hardness between 5 and 7. The mud content and stone powder content are strictly controlled (usually required to be <1%), and sufficient strength and hardness (low crushing value). The cementitious material uses high-strength cement (such as PO 42.5 or higher), and may be mixed with appropriate amounts of silica fume, high-quality fly ash, or slag powder (usually 3-8%) to increase and unblock pore channels while ensuring strength. The addition of a high-efficiency water-reducing agent (polycarboxylate-based is best) is crucial. It can significantly reduce the amount of mixing water (lowering the water-cement ratio), making the slurry more viscous and with better encapsulation, thereby reducing the risk of slurry flowing into pores and clogging channels, and significantly improving permeability and strength.

[0059] Thickeners / water-retaining agents: Used when it is necessary to improve the coating properties of the slurry, prevent segregation, and reduce slurry settling. They help stabilize the pore structure and prevent the pores from being partially blocked by the slurry during construction. Careful selection and control of the dosage are necessary to avoid excessive thickening that could affect permeability.

[0060] Reinforcing agents: Special permeable concrete reinforcing agents (usually containing polymers, fibers, etc.) can improve the adhesion and toughness of the slurry and protect the pore structure from damage under load.

[0061] Topcoat agent: After the precast permeable concrete blocks have been cured, a high-performance topcoat agent such as propylene polyurethane sealant is sprayed on to form a protective film on the pore walls of the permeable concrete, which enhances the surface wear resistance, reduces the shedding of internal cement particles, and makes the surface hydrophobic. Water can pass through, but oil, clay and other pollutants are not easy to adhere to and are easily washed away by rainwater.

[0062] Mix design of precast permeable concrete blocks: Reasonable porosity (usually between 15% and 25%), low water-cement ratio (usually between 0.28 and 0.35), minimize gel usage, and control the amount at 250-400 kg / m³.

[0063] Construction process: Using a forced mixer, first dry mix the aggregate and part of the cement (or cement + admixture) for about 30 seconds, then add most of the water and water-reducing agent solution and mix for 60-90 seconds. Observe the coating of the slurry; if necessary, add a small amount of the remaining water to adjust (be very careful). The total mixing time should not be too long to prevent segregation of the slurry.

[0064] The goal is for the mixture to be in a state where it can be formed into a ball by hand but crumbles when dropped, with the aggregate surface evenly covered with a glossy cement paste film, no exposed stones, and no free paste separation.

[0065] Use a light roller or a dedicated vibrator at a low frequency for a short time to achieve a smooth surface, stable aggregate arrangement, and good slurry coating. Over-compaction is strictly prohibited! After compaction, a power trowel (with or without low-frequency vibration) may be used for a very short time to finish the surface.

[0066] After compaction, immediately cover the surface tightly with plastic film (preferred) or permeable geotextile, and spray water to keep it moist. The recommended curing time is 14 days. After curing, the compressive strength of the permeable concrete precast blocks can reach 15 MPa or above.

[0067] Drainage efficiency calculation: Taking the rainfall intensity in Fuzhou, Fujian Province as an example, the maximum hourly rainfall intensity is 148.9 mm / h. Calculating a 100m wide road, the flow rate per meter of road length is 4.125 L / s, while the maximum drainage capacity that can pass through the holes in the side wall of the curb per meter is 73.85 L / s. Even on a road surface with a water depth of 20 cm, it can be drained in just 1.8 minutes.

[0068] With four precast permeable concrete blocks and a vertically reserved discharge outlet per linear meter, the discharge flow rate is 3.37 L / s.

[0069] Road curbs without drainage function usually require manual pumping. If relying on natural evaporation or infiltration to remove accumulated water, it takes about 20-40 days in summer and 2-6 months in autumn and winter. However, with this new design, accumulated water can be removed in less than 2 minutes, demonstrating a significant drainage effect.

[0070] Performance data of luminous warning tape: Hot-melt fluorescent coatings are used, with a typical coating thickness of 1.2mm-1.5mm for the scraping type. Weather-resistant rare-earth long-afterglow phosphors are selected. Inorganic fluorescent materials use alkaline earth metal sulfides (such as ZnS, CaS) and aluminates (SrAl2O4, CaAl2O4, BaAl2O4) as the luminescent matrix, and rare-earth lanthanide elements [Eu, Sm, Erbium, Nd, etc.] as activators and co-activators. Methyl methacrylate (MMA) resin, high-quality aliphatic polyurethane resin, or specially modified epoxy resin are selected to improve weather resistance. The use of UV-resistant resins (such as MMA, modified epoxy, and aliphatic polyurethane), stabilized phosphors (strontium aluminate, surface-coated), and high-efficiency additives (UVA absorbers and light stabilizers) further enhances weather resistance. UVA effectively absorbs harmful ultraviolet rays and converts them into harmless heat energy. The coating process also includes layers such as silica and alumina nanofilms.

[0071] After the fluorescent paint markings are applied, glass microspheres are sprinkled on top to achieve directional retroreflection. The glass microspheres have a refractive index of 1.93 or higher and a sphericity of over 97%. The initial brightness (10 minutes after excitation) is >1000 mcd / m², and the afterglow brightness is ≥3 mcd / m² after 10 hours.

[0072] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A modular prefabricated drainage curbstone, characterized in that: The curbstone body comprises a vertical curbstone and a horizontal curbstone. The horizontal curbstone is fixedly mounted on the bottom side of one side of the vertical curbstone, forming an L-shaped structure. A drainage channel is provided inside the curbstone body, extending along its length. A water channel running through the curbstone body along its length is provided on the top surface of the horizontal curbstone. A recessed mounting groove is provided at the bottom of the water channel, containing a permeable concrete block. Several spaced pads are fixedly mounted on the bottom of the mounting groove to elevate and support the bottom of the permeable concrete block. The pads are prefabricated integrally with the mounting groove, forming bottom drainage gaps between adjacent pads. Vertical drainage channels are provided on both opposite walls of the mounting groove, with the height of the vertical drainage channels equal to the height of the mounting groove. The vertical drainage channels extend through the upper and lower ends of the mounting groove and also serve as access ports for disassembling tools of the permeable concrete block. The mounting groove has drainage holes on its surface. The permeable concrete block has a positioning pin hole, the other end of which is connected to the channel wall of the drainage channel. A positioning insertion hole is provided on the side of the permeable concrete block facing the drainage hole. A positioning pin is inserted into the positioning insertion hole from inside the drainage channel through the positioning pin hole to achieve assembly and fixation. The positioning pin and the positioning pin hole are interference-fitted, and the positioning insertion hole and the positioning pin are clearance-fitted. Several drainage holes are provided on the curbstone body, distributed on the side of the mounting groove near the drainage channel and on the side of the curbstone above the water trough. The drainage holes lead to the drainage channel, and a drainage pipe is connected to the drainage channel. A luminous warning strip is also provided on the curbstone body. An inspection port is provided on the top of the drainage channel on the curbstone body. The inspection port has an openable top cover, and the top surface of the top cover has a grip groove for fingers to hold. A knob for controlling the top cover's opening and closing is provided on the top cover. A sealing structure is provided between the top cover and the inspection port, and the knob is locked by an internal crank and a stepped structure inside the inspection port.

2. The modular prefabricated drainage curbstone according to claim 1, characterized in that: The curbstone body is a precast concrete component; the drainage holes, drainage channels and drainage pipes constitute a connected drainage system for quickly draining surface runoff; the luminous warning strip is a structure made of photoluminescent material.

3. The modular prefabricated drainage curbstone according to claim 1, characterized in that: The permeable concrete block has a porosity of 15%-25% and a compressive strength of not less than 15MPa.

4. The combined prefabricated drainage curbstone according to any one of claims 1-3, characterized in that: The drain hole is a tapered hole that is narrow on the outside and wide on the inside, wherein the drain hole is connected to the drain channel through the wide opening on its inner side; the inner wall of the drain hole is smoothly transitioned, and its expansion angle is 10°~25°.

5. The modular prefabricated drainage curbstone according to claim 1, characterized in that: The luminous warning strip is fixedly installed on the upper edge of the side of the upright curb stone near the flat curb stone, and is arranged in a strip shape along the length of the upright curb stone; the initial brightness of the luminous warning strip is greater than 1000 mcd / m², and the afterglow brightness is not less than 3 mcd / m² after 10 hours.

6. The modular prefabricated drainage curbstone according to claim 1, characterized in that: The drain pipe includes a vertical drain pipe connected to the inner bottom of the drain channel, a vertical telescopic pipe connected to the bottom of the vertical drain pipe, a 90-degree elbow connected to the bottom of the vertical telescopic pipe, a horizontal telescopic pipe connected to the other end of the elbow, and a horizontal drain pipe connected to the other end of the horizontal telescopic pipe. The vertical telescopic pipe and the horizontal telescopic pipe are rubber expansion joints or stainless steel corrugated pipes. The overall drain pipe is adjustable for installation error of ±50mm.

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