Drainage system of temporary road pavement

Abstract

The invention discloses a temporary road pavement drainage system which comprises a temporary water collecting part, a transition part and a rainwater main pipe which are sequentially connected, the temporary water collecting part is located at the low point of a temporary road, rainwater enters the temporary water collecting part and then is drained into the transition part to be deposited, and the transition part drains deposited secondary rainwater into the rainwater main pipe. And the temporary water collecting part is arranged below a motor vehicle lane of the temporary road. Through the interaction of the temporary water collecting part, the transition part and the rainwater main pipe, the problem that traditional water collecting measures cannot be safely applied to pavement drainage of a V-shaped structure of a temporary road pavement can be solved, the pavement cross slope design of the temporary road is affected, and the pavement drainage problem that the low point of the cross slope of the temporary road is not arranged on a vertical road tooth edge is solved.

Description

Technical Field

[0001] This invention relates to the field of temporary road drainage technology, and more particularly to a drainage system for a temporary road surface. Background Technology

[0002] For the construction of large-scale projects such as subways, intercity railways, and tunnels, temporary roads are often needed during construction to alleviate traffic congestion. Traditionally, road surface drainage inlets are storm drains, typically located at the curb edge and the lowest point of the road's cross slope. However, temporary roads often cannot have their cross slope lowest point placed at the curb edge due to various factors, or they may be affected by existing pipelines, preventing the installation of temporary storm drains. This results in water accumulation and impeded drainage. Currently, drainage methods mainly include storm drains, cross ditches, and linear drainage systems in plazas. While storm drains are used under municipal roads, this method is limited by the requirement to be placed at the curb edge, making it unsafe to install under temporary roads with a "V"-shaped cross slope. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, the present invention provides a drainage system for temporary road surfaces, wherein the interaction of a temporary water collection section, a transition section and a rainwater trunk line can solve the problem that traditional water collection measures cannot be safely applied to the drainage of "V"-shaped structures of temporary road surfaces, and affect the cross slope design of temporary roads, thereby solving the drainage problem of temporary roads where the lowest point of the cross slope is not located at the curb.

[0005] Specifically, the following technical solutions are included: The present invention provides a drainage system for a temporary road surface. The drainage system includes a temporary water collection section, a transition section and a rainwater main pipe connected in sequence. The temporary water collection section is located at the lowest point of the temporary road. After rainwater enters the temporary water collection section, it is discharged into the transition section for deposition. The transition section discharges the deposited secondary rainwater into the rainwater main pipe. The temporary water collection section is located below the motor vehicle lane of the temporary road.

[0006] Optionally, the temporary water collection section is a prefabricated drainage ditch, the transition section is a sedimentation tank, the sedimentation tank is provided with an inlet and an outlet, one end of the prefabricated drainage ditch is located in the inlet, and the outlet is connected to the rainwater main pipe.

[0007] Optionally, the outlet is connected to the rainwater main pipe via a rainwater pipe, the rainwater pipe being located below the water inlet, and the outlet being positioned higher than the rainwater main pipe.

[0008] Optionally, the rainwater pipe is of type DN400, and the diameter of the rainwater main pipe is not less than the diameter of the DN400 pipe.

[0009] Optionally, the drainage system includes a plurality of the prefabricated drainage ditches, the prefabricated drainage ditches comprising: A receiving trough for holding rainwater on the temporary road; A water inlet is provided above the receiving tank and is connected to the receiving tank. The width of the water inlet is smaller than the width of the receiving tank. A cover is provided at the end of the water inlet away from the receiving tank, and the cover is provided with a water leakage hole. The cover is flush with the road surface of the temporary road.

[0010] Optionally, the inlet is connected to the receiving trough, and in the projection of the prefabricated drainage ditch in the width direction of the temporary road, the centerline of the inlet coincides with the centerline of the receiving trough.

[0011] Optionally, the inlet, the receiving trough, and the cover are integrally formed, and the prefabricated drainage ditch includes a steel reinforcement layer and a concrete layer.

[0012] Optionally, the receiving trough includes a side wall and a bottom wall, the reinforcing steel layer includes an outer reinforcing steel layer, the cap is U-shaped, the cap is fitted over the inlet end, the distance between the side wall and the outer reinforcing steel layer is 150mm to 200mm, the distance between the bottom wall and the outer reinforcing steel layer is 200mm to 250mm, and the concrete layer is provided between the bottom wall and the outer reinforcing steel layer, and between the side wall and the outer reinforcing steel layer.

[0013] Optionally, the reinforcing steel layer further includes an intermediate reinforcing steel layer, which includes a plurality of cylindrical reinforcing steel bars. The axis of the cylindrical reinforcing steel bars is perpendicular to the axis of the outer reinforcing steel layer, and the intermediate reinforcing steel layer is fixedly connected to the outer reinforcing steel layer and / or the inner reinforcing steel layer. The distance between two adjacent cylindrical reinforcing steel bars is 90mm to 110mm.

[0014] Optionally, two adjacent prefabricated drainage edges are connected by an expansion joint, the expansion joint being 3cm wide and containing elastic material.

[0015] The drainage system for temporary road surfaces provided in this invention includes a temporary water collection section, a transition section, and a stormwater main pipe connected in sequence. This system collects rainwater from the temporary road surface, preventing it from accumulating and affecting driving safety. The transition section filters and deposits impurities in the rainwater, reducing wear on the subsequent stormwater main pipe and extending its service life. The temporary water collection section is located below the temporary road's driveway, and a sedimentation tank is installed at the lowest point of the road's longitudinal profile. Rainwater from the temporary water collection section is discharged into the stormwater main pipe after passing through the sedimentation tank. This solves the problem that traditional water collection methods cannot be safely applied to the drainage of "V"-shaped temporary road surfaces, affecting the cross slope design of temporary roads and addressing the drainage issue when the lowest point of the cross slope is not located at the curb.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a drainage system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a prefabricated drainage ditch according to an embodiment of the present invention; Figure 3 This is a top view of a prefabricated drainage ditch according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a sedimentation tank according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a cross-section of a drainage system according to an embodiment of the present invention.

[0019] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100 Drainage system, 110 Prefabricated drainage ditch, 111 Inlet, 112 Reception tank, 1121 Side wall, 1122 Bottom wall, 113 Cover, 114 Concrete layer, 116 Outer layer of steel reinforcement, 117 Middle layer of steel reinforcement, 120 Sedimentation tank, 121 Inlet installation port, 122 Outlet, 130 Rainwater main pipe, 140 Rainwater pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Before providing a further detailed description of the embodiments of the present invention, the directional terms used in the embodiments of the present invention, such as "upper part", "lower part" and "side part", are not intended to limit the scope of protection of the present invention.

[0022] To make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 5 As shown, one embodiment of the present invention provides a drainage system 100 for a temporary road surface. The drainage system includes a temporary water collection section, a transition section, and a rainwater main pipe 130 connected in sequence. The temporary water collection section is located at the lowest point of the temporary road. After entering the temporary water collection section, rainwater is discharged into the transition section for deposition. The transition section discharges the deposited secondary rainwater into the rainwater main pipe 130. The temporary water collection section is located below the motor vehicle lane of the temporary road.

[0024] The drainage system 100 includes a temporary water collection section, a transition section, and a rainwater main pipe 130 connected in sequence. This system collects rainwater from the temporary road surface, preventing it from accumulating and affecting driving safety. The transition section filters and deposits impurities in the rainwater, reducing wear on the subsequent rainwater main pipe 130 and extending its service life. The temporary water collection section is located below the motor vehicle lanes of the temporary road, with the transition section positioned at the lowest point of the road's longitudinal profile. Rainwater from the temporary water collection section is then discharged into the rainwater main pipe 130 through the transition section. This addresses the issue that traditional water collection methods cannot be safely applied to the "V"-shaped road surface structure of temporary roads, and also addresses the issue of drainage when the lowest point of the temporary road's cross slope is not located at the curb.

[0025] Figure 1 This is a schematic diagram of a drainage system according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a cross-section of a drainage system according to an embodiment of the present invention.

[0026] In one feasible implementation, such as Figure 1 and Figure 5As shown, the temporary water collection section is a prefabricated drainage ditch 110, and the transition section is a sedimentation tank 120. The sedimentation tank 120 is provided with an inlet 121 and an outlet 122. One end of the prefabricated drainage ditch 110 is located in the inlet 121, and the outlet 122 is connected to the rainwater main pipe 130.

[0027] Specifically, using prefabricated drainage ditches 110 as temporary water collection units allows for selection and fabrication based on the actual conditions of temporary roads, followed by direct on-site installation. This improves construction efficiency and enables large-scale factory production, ensuring that each product meets uniform specifications and quality standards. This production method significantly shortens on-site construction time, reduces errors and delays caused by on-site fabrication, and lowers reliance on the skill level of construction personnel, thereby significantly improving overall construction efficiency. Furthermore, compared to traditional on-site cast-in-place or hand-made drainage ditches and troughs, prefabricated drainage ditches produced using prefabricated molds possess higher structural strength and stability. During the mold forming process, materials are evenly distributed and fully compacted, effectively avoiding quality problems such as cracks and voids. This allows the prefabricated drainage ditches 110 to withstand greater water flow impact and soil pressure, greatly extending their service life and reducing the frequency of later maintenance and replacement. The prefabricated drainage ditches 110 can also be reused, improving economic efficiency. When damaged, they are easy to disassemble and replace, reducing maintenance difficulty and costs.

[0028] It should be noted that the transition section is a grit chamber 120. The prefabricated drainage ditch 110 first discharges the collected rainwater into the grit chamber 120. Through the gravity of large suspended particles, the large suspended particles settle to the bottom of the grit chamber 120. The relatively clear rainwater in the upper part away from the grit chamber 120 is discharged into the rainwater main pipe 130 through the outlet 122. The setting of the grit chamber 120 can settle large particles of impurities, preventing them from being discharged into the rainwater main pipe 130 through the outlet 122, which would cause wear on the inner wall of the rainwater main pipe 130 and damage to the subsequent power mechanism. This improves the service life of the rainwater main pipe 130 and extends the maintenance interval of the subsequent power mechanism.

[0029] It is understandable that a filter screen can be installed at the outlet 122. By controlling the size of the filter screen, particulate impurities entering the rainwater main pipe 130 can be further reduced. The distance between the bottom wall of the sedimentation tank 120 and the outlet 122 is 450mm to 550mm. In this embodiment, the distance is 500mm, which allows for better sedimentation of large particulate impurities in the water, effectively reducing the amount of impurities entering the rainwater main pipe 130.

[0030] Figure 4This is a schematic diagram of a sedimentation tank according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a cross-section of a drainage system according to an embodiment of the present invention.

[0031] In one feasible implementation, such as Figure 4 and Figure 5 As shown, the outlet 122 is connected to the rainwater main pipe 130 through the rainwater pipe 140. The rainwater pipe 140 is located below the water inlet 121, and the outlet 122 is located higher than the rainwater main pipe 130.

[0032] The outlet 122 is connected to the rainwater main pipe 130 via the rainwater pipe 140. In other words, both ends of the rainwater pipe 140 are fixedly connected to the rainwater main pipe 130 and the sedimentation tank 120, respectively. They can be connected by flange plates, and sealing rings are installed on the flange plates to prevent rainwater leakage.

[0033] It should be noted that the rainwater pipe 140 is located below the water inlet 121, and the outlet 122 is located higher than the rainwater main pipe 130. This arrangement is based on the principle of "water flows downhill", allowing rainwater to enter the prefabricated drainage ditch 110, sedimentation tank 120 and rainwater main pipe 130 in sequence without the need for an additional power mechanism, reducing the complexity of construction, reducing the difficulty of subsequent maintenance and repair, and improving construction efficiency.

[0034] In one feasible implementation, the rainwater pipe 140 is of type DN400, and the diameter of the rainwater main pipe 130 is not less than the diameter of the DN400 pipe.

[0035] Among them, the 140 model of rainwater pipe adopts DN400, which can ensure a stable flow of rainwater while reducing construction costs. At the same time, DN400 pipes also have the advantages of good chemical resistance and corrosion resistance, as well as convenient installation and maintenance, making them fully capable of working in drainage systems.

[0036] It should be noted that the diameter of the rainwater main pipe 130 is not less than that of a DN400 pipe. It can promptly transport rainwater from the prefabricated drainage ditch 110 and sedimentation tank 120, preventing rainwater accumulation and the formation of waterlogged roads on temporary drainage surfaces.

[0037] Figure 2 This is a schematic diagram of a prefabricated drainage ditch according to an embodiment of the present invention; Figure 3 This is a top view of a prefabricated drainage ditch according to an embodiment of the present invention.

[0038] In one feasible implementation, such as Figure 2 and Figure 3 As shown, the drainage system 100 includes multiple prefabricated drainage ditches 110, each prefabricated drainage ditch 110 comprising: The receiving trough 112 is used to collect rainwater on temporary roads; The inlet 111 is located above the receiving tank 112 and is connected to the receiving tank 112. The width of the inlet 111 is smaller than the width of the receiving tank 112. A cover 113 is located at the end of the inlet 111 away from the receiving trough 112. The cover 113 has a water leakage hole and is flush with the road surface of the temporary road.

[0039] Due to the construction of temporary roads, the lowest point of these roads is usually located under motor vehicles. Existing prefabricated drainage ditches 110 are prone to damage under the dynamic load of motor vehicles, leading to vehicles getting stuck and road surface collapse, threatening driving safety. Therefore, the prefabricated waterproof drainage ditch 110 described in this application can avoid these problems.

[0040] The prefabricated drainage ditch 110 includes an inlet 111 and a receiving trough 112 connected to each other. Water enters through the inlet 111 and is stored in the receiving trough 112. Water is then discharged through the receiving trough 112 to a sedimentation tank 120 and finally into a stormwater main 130, ensuring timely drainage of surface water on temporary roads. Even when the prefabricated drainage ditch 110 is placed on a motor vehicle lane, the dynamic load exerted by motor vehicles on the prefabricated drainage ditch 110 is reduced because the width of the inlet 111 is smaller than the width of the receiving trough 112. This reduces damage to the prefabricated drainage ditch 110, extends its service life, increases its usage frequency, and improves its economic efficiency. By setting up a cover 113 and providing drainage holes on the cover 113, rainwater can be collected while preventing leaves, paper scraps and other small objects from falling into the prefabricated drainage ditch 110, thus avoiding blockage of subsequent pipes and ensuring the reliability of rainwater collection on temporary road surfaces.

[0041] Specifically, this application sets the inlet 111 to a small diameter, typically with a width of 1 / 6 to 1 / 10 of the width of the receiving trough 112. This reduces the contact area between the prefabricated drainage ditch 110 and vehicles, thereby reducing the dynamic load received by the prefabricated drainage ditch 110, extending its service life, reducing road construction costs, and improving economic efficiency. Furthermore, even if the inlet 111 is damaged, its small size will prevent vehicles from getting stuck, thus improving driving safety.

[0042] It should be noted that the projection of the inlet 111 in the width direction of the temporary road can be a rectangle or an isosceles trapezoid. When the projection of the inlet 111 is an isosceles trapezoid, the upper base (short side) is flush with the upper surface of the temporary road after the cap 113 is added, and the lower base (long side) is fixedly connected to the receiving groove 112. The projection of the receiving groove 112 in the width direction of the temporary road can be a square or a rectangle. In this embodiment, the projection of the inlet 111 is rectangular, and the projection of the receiving groove 112 is square. The height of the inlet 111 is 200mm and the width is 50mm. Correspondingly, the height of the receiving groove 112 is 300mm and the width is 300mm. The maximum water collection length of a single prefabricated drainage ditch 110 can be calculated based on the longitudinal section of the temporary road and the catchment area. According to road design specifications, the maximum longitudinal slope of the road is not less than 3‰. Under a 3‰ slope, the flow capacity of a 300×300 linear ditch is 0.052m. 3 / s, the catchment area is measured according to the road width, and the required catchment flow of the road section is calculated by combining the rainstorm intensity formula. The maximum water collection length of a single prefabricated drainage ditch under different road grades is calculated by extrapolation.

[0043] It is understandable that the connection between the receiving trough 112 and the inlet 111 is an opening, so that accumulated water can enter the receiving trough 112 through the inlet 111. The inlet 111 has a certain height, so that even if the inlet 111 is damaged due to vehicle dynamic load, there is an arc transition as the road surface at both ends of the inlet 111 collapses, which prevents vehicles from getting stuck and causing safety accidents, and improves the driving safety of the temporary road.

[0044] In one feasible implementation, the inlet 111 is connected to the receiving trough 112, and in the projection of the prefabricated drainage ditch 110 in the width direction of the temporary road, the center line of the inlet 111 coincides with the center line of the receiving trough 112.

[0045] In the projection of the prefabricated drainage ditch 110 in the width direction of the temporary road, the center line of the inlet 111 coincides with the center line of the receiving trough 112. This ensures the balance of the dynamic load of motor vehicles on the prefabricated drainage ditch 110 and further improves the service life of the prefabricated drainage ditch 110.

[0046] In one feasible implementation, the inlet 111, the receiving trough 112 and the cover 113 are integrally formed, and the prefabricated drainage ditch 110 includes a steel reinforcement layer and a concrete layer.

[0047] The inlet 111 and the receiving trough 112 are integrally formed, which can effectively improve the strength of the prefabricated drainage ditch 110, improve the load-bearing capacity of the prefabricated drainage ditch 110 for vehicles, and effectively improve the service life of the prefabricated drainage ditch 110.

[0048] It should be noted that the prefabricated drainage ditch 110 is made of steel bars and concrete in one piece. The prefabricated drainage ditch 110 made of reinforced concrete is strong and durable, can withstand large loads, and is suitable for use under motor vehicle lanes. It has good seismic performance, which makes it suitable for use under motor vehicle lanes, avoiding the impact of vibrations from passing vehicles on the service life of the prefabricated drainage ditch 110. At the same time, it also has good fire resistance, construction flexibility and good economy.

[0049] In one feasible embodiment, the receiving trough 112 includes a side wall 1121 and a bottom wall 1122, the reinforcing layer includes an outer reinforcing layer 116, the cover 113 is U-shaped and is fitted over the end of the inlet 111, the distance between the side wall 1121 and the outer reinforcing layer 116 is 150mm to 200mm, the distance between the bottom wall and the outer reinforcing layer 116 is 200mm to 250mm, and a concrete layer 114 is provided between the side wall 1121 and the outer reinforcing layer 116, and between the bottom wall 1122 and the outer reinforcing layer 116.

[0050] When the inlet 111 and the receiving trough 112 are integrally formed, the outer layer 116 of the reinforcing steel is convex in shape. The side wall 1121 and the bottom wall 1122 can be formed by steel plates, or the bottom wall 1122 and the side wall 1121 can be formed after the concrete layer 114 is poured. The outer layer 116 of the reinforcing steel forms a pouring groove with the bottom wall 1122, the side wall 1121 and the inlet 111, respectively, for pouring the concrete layer 114, so that the outer layer 116 of the reinforcing steel, the receiving trough 112 and the inlet 111 form an integral structure.

[0051] It should be noted that concrete layer 114 uses C30 concrete with a permeability resistance grade of P6. C30 indicates a bearing capacity of 30 kg per square centimeter, and P6 indicates the waterproofing grade, meaning a working pressure exceeding 0.6 MPa. This standard of concrete has high permeability resistance, capable of resisting certain water pressure and preventing moisture penetration, which is particularly important for precast drainage ditches. It also possesses good durability and high safety, extending the service life of the precast drainage ditch 110, and can even be recycled, improving construction economy. The reinforcing steel layer uses HRB400 steel. HRB400 steel has a high yield strength, with a standard yield strength value of 400 MPa, allowing it to withstand greater pressure while maintaining stable performance, ensuring the quality and safety of the precast drainage ditch 110. HRB400 steel also has good weldability, contributing to welding reliability. Furthermore, HRB400 steel has good seismic resistance, able to withstand vibrations generated by passing vehicles, ensuring the quality of the precast drainage ditch 110 and extending its service life.

[0052] It is understandable that the outer layer 116 of the steel bars is formed by welding multiple steel bars bent into a convex shape along the length of the prefabricated drainage ditch 110, so that the outer layer 116 of the steel bars forms a casting groove along the length, and concrete is poured into it to form a concrete layer 114, which ultimately forms the whole prefabricated drainage ditch 110.

[0053] The cap 113 is U-shaped and is inverted onto the inlet 111. In other words, the cap 113 is wrapped around the outer end of the inlet 111. After pouring concrete, the cap 113, the inlet 111, and the receiving trough 112 are integrally formed. This avoids the loss of the cap 113 due to separate transportation, which would affect construction efficiency and increase construction costs.

[0054] In one feasible implementation, the receiving groove 112 and the inlet 111 can be detachably connected. In this case, the inlet 111 has a protruding post or a slot on the side facing the receiving groove 112, and the receiving groove 112 has a slot or a protruding post on the side facing the inlet 111, with the slot matching the protruding post; or the inlet 111 has a connecting block or a mounting groove on the side facing the receiving groove 112, and the receiving groove 112 has a mounting groove or a connecting block on the side facing the inlet 111, with the mounting groove matching the connecting block.

[0055] The detachable connection method facilitates disassembly and transportation, improving the neatness of placement during transport. The multiple protruding pillars increase both processing and transportation difficulties, making them prone to breakage during transport. Therefore, a connecting block can be installed on the side of the inlet 111 facing the receiving groove 112, and correspondingly, an installation groove can be provided on the side of the receiving groove 112 facing the inlet 111. The connecting block is elongated, increasing its strength and thus reducing processing and transportation difficulties. Similarly, an installation groove can be provided on the side of the inlet 111 facing the receiving groove 112, and a connecting block can be provided on the side of the receiving groove 112 facing the inlet 111. The fixed connection between the inlet 111 and the receiving groove 112 is achieved through the matching of the connecting block and the installation groove. The connection method between the inlet 111 and the receiving groove 112 can be selected as needed, and is not limited to the two methods mentioned above, which will not be elaborated further.

[0056] It should be noted that since the inlet 111 and the receiving trough 112 are detachably connected, a gasket layer, i.e., a rubber gasket, needs to be installed at the connection between the inlet 111 and the receiving trough 112 to improve the sealing performance of the connection and prevent water leakage, thus affecting the working effect of the prefabricated drainage ditch 110. Because the inlet 111 has a certain weight, it compresses the rubber gasket, thereby improving the sealing between the inlet 111 and the receiving trough 112. Additionally, a steel reinforcement outer layer 113, a steel reinforcement middle layer 117, and a concrete layer 114 are installed outside the detachable inlet 111 and the receiving trough 112; these details will not be repeated here.

[0057] It is understandable that when the inlet 111 and the receiving trough 112 are detachably connected, the cover 113 is integrally formed with the inlet 111. When the inlet 111 and the receiving trough 112 are detachably connected, they are also made through a steel reinforcement layer and a concrete layer 114 to improve the strength and service life of the prefabricated drainage ditch 110.

[0058] In one feasible embodiment, the reinforcing layer further includes a reinforcing intermediate layer 117, which includes a plurality of cylindrical reinforcing bars. The axis of the cylindrical reinforcing bars is perpendicular to the axis of the outer reinforcing layer 116, and the reinforcing intermediate layer 117 is fixedly connected to the outer reinforcing layer 116. The distance between two adjacent cylindrical reinforcing bars is 90mm to 110mm.

[0059] In this design, a secondary reinforcing bar layer 117 is provided on the side of the outer reinforcing bar layer 116 facing the receiving groove 112 and the water inlet 111. The secondary reinforcing bar layer 117 comprises multiple cylindrical reinforcing bars, spaced apart on the side of the outer reinforcing bar layer 116 facing the receiving groove 112 and the water inlet 111. The outer reinforcing bar layer 116 is welded to the multiple cylindrical reinforcing bars, which are spaced apart. Typically, the axis of the cylindrical reinforcing bars is perpendicular to the axis of the outer reinforcing bar layer 116 to ensure parallel arrangement of the multiple cylindrical reinforcing bars, further improving the strength of the prefabricated drainage ditch 110. In this embodiment, the distance between two adjacent cylindrical reinforcing bars in the secondary reinforcing bar layer 117 is 100mm. A denser spacing between the cylindrical reinforcing bars results in greater strength of the prefabricated drainage ditch 110, but increases manufacturing costs; therefore, the spacing can be selected according to needs.

[0060] In this embodiment, based on the statistics of the actual types and numbers of vehicles passing through, a method of welding a middle layer of reinforcing bars 117 onto the outer layer 116 of the reinforcing bars is adopted, without the need to set an additional inner layer of reinforcing bars 115, so as to reduce the production cost of the prefabricated drainage ditch 110 and improve its economic efficiency.

[0061] It should be noted that the distance between two adjacent cylindrical steel bars is 100mm. This spacing setting can reduce the production cost of the prefabricated drainage ditch 110 and improve the economic efficiency of construction while ensuring the load-bearing capacity of the prefabricated drainage ditch 110.

[0062] In one feasible implementation, along the length of the temporary dredging road, two adjacent prefabricated drainage ditches 110 are connected by an expansion joint with a width of 3 cm and an elastic material inside.

[0063] Expansion joints can alleviate deformation caused by temperature stress, concrete shrinkage, and vehicle pressure. Elastic materials such as asphalt-impregnated hemp fibers, rubber strips, or polyurethane sealant can be used to fill the expansion joints. In this embodiment, asphalt-impregnated hemp fibers are used. These fibers are made of asphalt-impregnated hemp fibers or plant fibers, possessing a certain degree of flexibility and elasticity, capable of adapting to minor expansion and contraction deformations caused by temperature changes, settlement, or vibration. They are generally suitable for joints ≤30mm wide. After filling, they effectively alleviate the compressive or tensile stress on both sides of the joint, preventing cracking of the concrete layer 114. Asphalt itself has strong waterproof properties, effectively preventing rainwater and groundwater from seeping into the structure through the expansion joint. The interwoven hemp fibers form a dense layer, which, when combined with asphalt, can seal gaps and reduce the risk of leakage. Asphalt has a certain resistance to weak acids, weak alkalis, and salts, making it suitable for corrosive environments such as humid and coastal areas. Compared to ordinary rubber strips, asphalt-impregnated hemp fibers have a longer service life in concealed areas with insufficient ultraviolet radiation (such as indoor joints and underground projects). Asphalt-impregnated hemp rope can be filled manually without special equipment, making it especially suitable for narrow or irregularly shaped expansion joints. Asphalt and hemp are both common building materials, and the cost is much lower than metal expansion joint devices or polymer sealants, thus reducing costs and improving economic efficiency.

[0064] By setting up the prefabricated drainage ditch 110 of this application, rapid shallow burial construction can be achieved, solving the problem that existing water collection measures cannot be safely applied to the drainage of temporary road surface “V” shaped structures, affecting the cross slope design of temporary roads, solving the road surface drainage problem where the low point of the road cross slope is not set at the edge of the road curb, and also solving the problem that the placement of rainwater inlets in the middle of the road affects driving safety.

[0065] Specifically, first, a trench is dug, and the sedimentation tank 120 is placed in the required location. Then, the prefabricated drainage ditch 110 is placed in the trench according to the required length and fixed at the water inlet 121 of the sedimentation tank 120. Simultaneously, the outlet 122 of the sedimentation tank 120 is fixedly connected to the rainwater main pipe 130 via a rainwater pipe 140. Then, backfilling is carried out, with the following layers from bottom to top: 15cm high graded crushed stone, 26cm C25 plain concrete base layer, 5cm medium-grained asphalt concrete AC-20C, and 4cm fine-grained modified asphalt concrete AC-13C. In this embodiment, the dimensions of the prefabricated drainage ditch 110 are such that the lower part of the prefabricated drainage ditch 100 can be backfilled with the existing plain soil, which is located below the graded crushed stone. It is understood that the backfill layer can also be modified as needed.

[0066] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "a plurality" refers to two or more unless otherwise expressly defined.

[0067] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0068] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drainage system for a temporary road surface, characterized in that, The drainage system includes a temporary water collection section, a transition section, and a rainwater main pipe connected in sequence. The temporary water collection section is located at the lowest point of the temporary road. After entering the temporary water collection section, rainwater is discharged into the transition section for sedimentation. The transition section discharges the sedimented secondary rainwater into the rainwater main pipe. The temporary water collection section is located below the motor vehicle lane of the temporary road.

2. The drainage system for temporary road surfaces according to claim 1, characterized in that, The temporary water collection section is a prefabricated drainage ditch, the transition section is a sedimentation tank, the sedimentation tank is provided with an inlet and an outlet, one end of the prefabricated drainage ditch is set in the inlet, and the outlet is connected to the rainwater main pipe.

3. The drainage system for temporary road surfaces according to claim 2, characterized in that, The outlet is connected to the main rainwater pipe via a rainwater pipe, the rainwater pipe being located below the inlet, and the outlet being positioned higher than the main rainwater pipe.

4. The drainage system for temporary road surfaces according to claim 3, characterized in that, The rainwater pipe is of model DN400, and the diameter of the rainwater main pipe is not less than the diameter of the DN400 pipe.

5. The drainage system for temporary road surfaces according to claim 2, characterized in that, The drainage system includes multiple prefabricated drainage ditches, each prefabricated drainage ditch comprising: A receiving trough for holding rainwater on the temporary road; A water inlet is provided above the receiving tank and is connected to the receiving tank. The width of the water inlet is smaller than the width of the receiving tank. A cover is provided at the end of the water inlet away from the receiving tank, and the cover is provided with a water leakage hole. The cover is flush with the road surface of the temporary road.

6. The drainage system for temporary road surfaces according to claim 5, characterized in that, The inlet is connected to the receiving trough, and in the projection of the prefabricated drainage ditch in the width direction of the temporary road, the center line of the inlet coincides with the center line of the receiving trough.

7. The drainage system for temporary road surfaces according to claim 5, characterized in that, The inlet, the receiving trough, and the cover are integrally formed, and the prefabricated drainage ditch also includes a steel reinforcement layer and a concrete layer.

8. The drainage system for temporary road surfaces according to claim 7, characterized in that, The receiving trough includes a side wall and a bottom wall, the reinforcing steel layer includes an outer layer of reinforcing steel, the cap is U-shaped and is fitted over the inlet end, the distance between the side wall and the outer layer of reinforcing steel is 150mm to 200mm, the distance between the bottom wall and the outer layer of reinforcing steel is 200mm to 250mm, and the concrete layer is provided between the bottom wall and the outer layer of reinforcing steel, and between the side wall and the outer layer of reinforcing steel.

9. The drainage system for temporary road surfaces according to claim 8, characterized in that, The reinforcing steel layer also includes an intermediate reinforcing steel layer, which includes a plurality of cylindrical reinforcing steel bars. The axis of the cylindrical reinforcing steel bars is perpendicular to the axis of the outer reinforcing steel layer, and the intermediate reinforcing steel layer is fixedly connected to the outer reinforcing steel layer. The distance between two adjacent cylindrical reinforcing steel bars is 90mm to 110mm.

10. The drainage system for a temporary road surface according to any one of claims 5 to 9, characterized in that, The two adjacent prefabricated drainage sideways are connected by an expansion joint, which is 3cm wide and contains elastic material.

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