Highway electric heating system

Abstract

The invention provides a highway electric heating system which comprises a roadbed, a pavement cushion layer structure, a pavement base layer structure, a permeable layer, a sealing layer, a pavement surface layer structure lower surface layer, a bonding layer, a pavement surface layer structure middle surface layer, an electric heating waterproof roll layer and a pavement surface layer structure upper surface layer which are laid from bottom to top to form a highway lane body. And an electric heating module connecting system, a clean energy and electric heating system connecting line and a clean energy power supply module system. The clean energy power supply module system is arranged in a middle zone and a roadside slope of an expressway, and the electric heating waterproof coiled material layer is also used as a sealing layer to be arranged between a middle surface layer of a pavement surface layer structure and an upper surface layer of the pavement surface layer structure and is a core component of the electric heating module system. The invention relates to the technical field of highway engineering construction, and aims to solve the problems of high investment, poor effect and non-ideal effect of ice shoveling and snow removal of urban roads and highways in the prior art, unsuitability for large-range and full-road-area highway pavement of electric tracing bands and high energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of highway engineering construction, and in particular to a highway electric heating system. BACKGROUND

[0002] China has a vast territory, and many areas are affected by snow and ice weather in winter. Almost every year, snow and ice disasters will cause great damage to China's social and economic development, resulting in huge direct economic losses in the field of road transportation, causing great traffic safety hazards, and increasing immeasurable social costs.

[0003] 1. Snow and ice weather leads to icy road surface, reduced road skid resistance, and reduced visibility, resulting in paralysis of a large area of highways and ordinary roads. For example, during the 2008 southern low-temperature snow and ice disaster, nearly 20,000 kilometers of highways were paralyzed, 220,000 kilometers of ordinary roads were blocked, and the direct economic loss was 151.65 billion yuan. During the snowstorm in Jinan in 2024, the airport road and other sections were closed due to snow accumulation, and vehicles were severely stranded, causing almost complete paralysis of traffic.

[0004] 2. The freeze-thaw cycle (frozen-thaw alternation) leads to road cracking and damage to bridge structures, requiring high repair costs. For example, after the snow and ice weather in Harbin in 2025, dark ice appeared on the viaduct and slope, requiring frequent deicing operations.

[0005] Traffic disruption leads to blocked transportation of energy and living materials. For example, in 2008, there was a shortage of electricity and coal supply, 19 provinces implemented power rationing, and industrial enterprises were forced to suspend production on a large scale.

[0006] Disasters often overlap with the peak of the Spring Festival transportation, exacerbating the problem of passenger stranded. During the first week of the 2025 Spring Festival, snow and ice in Hainan and Sichuan caused slippery roads, forcing passengers to change their schedules or be stranded.

[0007] 3. Increased vehicle accident rate: icy road surface leads to vehicle skidding and rear-end collisions. In 2024, a series of accidents were caused by icy road surface in Zhoukou, Henan, and rear-end collisions also occurred frequently during the snowstorm in Jinan.

[0008] Increased risk of falling for pedestrians: icy road surface is prone to causing pedestrians to fall and injure, requiring additional medical expenses. Statistics show that falls caused by icy weather significantly increase the risk of fractures and brain injuries.

[0009] 4. Rescue and emergency investment: government departments need to invest a large amount of resources to remove ice and snow and dredge traffic. For example, after the snowfall in Qinghai in 2023, the police jointly with the road administration department sprayed 4,400 tons of snow-melting agent.

[0010] Insurance and compensation expenses: disasters lead to increased insurance claims for vehicle damage and delayed goods, and increased demand for personal accident insurance.

[0011] At present, the cost of ice and snow removal on urban roads and highways mainly includes snow-melting agent, mechanical equipment, labor cost, etc., and is greatly affected by the frequency of snowfall, road scale and policy differences. Every year, a large amount of manpower, material resources and financial resources are needed to fight against snow and ice disasters, but the investment is high, the effect is poor, and the effect is not very ideal.

[0012] 1. Central emergency funds: In February 2024, the central government allocated 141 million yuan to 11 provinces and cities including Hebei and Hubei to remove ice and snow on highways and dredge and divert traffic to ensure smooth traffic.

[0013] Local budget: Jilin Province spent 16900 tons of snow-melting agent (22000 tons on expressways and 12400 tons on ordinary highways) during a single snowfall in February 2024. At a market price of about 3000 yuan per ton, the cost of snow-melting agent alone exceeded 50 million yuan.

[0014] Benxi City includes snow removal costs in the annual financial budget and requires each district to pay a deposit (such as 100,000 yuan from the district government to the city government).

[0015] 2. Labor costs: For example, Jilin Province needs to invest more than 6000 person-times of labor (1600 people on expressways, 2000 people on ordinary highways, and temporary dispatching) during a single snowfall. At a daily wage of 200 yuan, the labor cost is about 1.2 million yuan per day.

[0016] Mechanical operation: The rental cost of large snow removal vehicles is about 2000-5000 yuan per shift, and if Jilin Province uses 2406 mechanical devices for a single snowfall, the cost is about 4.8-12 million yuan.

[0017] 3. Jingmen City, Hubei Province: During the low-temperature snow and rain period in February 2024, ordinary highway toll stations used industrial salt and manual cleaning to ensure smooth traffic. Each station consumed about 5-10 tons of industrial salt per day, costing about 150,000-300,000 yuan.

[0018] Wenxian County, Gansu Province: In January 2025, when responding to the first snowfall, national highway snow removal operations needed to consider sanding, snow-melting agent spreading, and vehicle rescue. The cost of a single day on mountainous roads was about 100-200 thousand yuan.

[0019] 4. Cost estimation of existing ice and snow removal technology solutions: The annual snow removal cost of key cities in the north is about 50-200 million yuan (such as Changchun and Harbin), and the single emergency cost in occasional snow disaster areas in the south can reach millions of yuan.

[0020] 5. Currently, the most commonly used methods are traditional de-icing agents and manual mechanical removal, which are expensive and ineffective. However, de-icing agents not only corrode various road facilities and accelerate road surface damage, but also pollute groundwater resources. Mechanical de-icing methods also use ice-breaking equipment that damages the road surface, seriously shortening its lifespan.

[0021] 6. Current optimization directions: Promote environmentally friendly snow-melting agents and mechanized operations to reduce subsequent maintenance costs; establish a cross-regional material dispatch mechanism to reduce reserve redundancy.

[0022] 7. There are still a small number of road electric heating systems in use, which use pre-buried heating cables. They require large investments, are difficult to construct, have limited technology and cannot be implemented on a large scale across the entire region. They also consume a lot of energy and have poor economic efficiency.

[0023] Existing electric heating cables utilize a trenching process for laying heating cables, generally limited to locations with steep slopes, such as garage entrances and exits. Furthermore, the heating cables are buried deep, significantly damaging existing roads during construction. Cable laying quality is difficult to control, and the degree of modularization and intensiveness is low, making large-scale, full-scale implementation difficult. Consequently, thermal efficiency is low. Furthermore, existing electric heating tracing relies on the national power grid for energy, resulting in high energy consumption.

[0024] Therefore, it is necessary to provide an electric heating system for highways that can solve the problems of high investment, poor effectiveness, unsatisfactory results, unsuitability of electric heating cables for highway paving and high energy consumption in the existing technology for ice and snow removal on urban roads and highways. Summary of the Invention

[0025] The purpose of the present invention is to provide an electric heating system for highways, which can solve the problems in the prior art of high investment, poor effectiveness, unsatisfactory results, unsuitability of electric heating cables for highway paving and high energy consumption in ice and snow removal on urban roads and highways.

[0026] In order to achieve the above object, the technical solution of the present invention is:

[0027] An electric heating system for a highway includes: a roadbed, a pavement cushion structure, a pavement base structure, a permeable layer, a sealing layer, a pavement surface structure lower layer, a tack layer, a pavement surface structure middle layer, an electric heating waterproofing coiled material layer, a pavement surface structure upper layer, an electric heating module connection system, a clean energy and electric heating system connection line, and a clean energy power supply module system; the pavement cushion structure, the pavement base structure, the permeable layer, the sealing layer, the pavement surface structure lower layer, the tack layer, the pavement surface structure middle layer, the electric heating waterproofing coiled material layer, and the pavement surface structure upper layer are arranged from bottom to top. The upper part is laid on the roadbed in sequence to form the main body of the highway lane; slope structures are set at the edges of both sides of the main body of the highway lane, the slope structure between the two-way highway lane bodies serves as a median strip, and the slope structures on the sides of the two-way highway lane bodies away from each other serve as roadside slopes; the electric heating module connection system, the clean energy and electric heating system connection line and the clean energy power supply module system are arranged at the slope structure, the electric heating waterproof membrane layer also serves as a sealing layer, and the electric heating module connection system is connected to the clean energy power supply module system through the clean energy and electric heating system connection line.

[0028] The electric heating waterproof roll material layer includes an isolation layer, an adhesive layer, a heat conduction layer, a heating layer and a thermal insulation layer; the heat conduction layer is laid on the upper surface of the heating layer, and the thermal insulation layer is laid on the lower surface of the heating layer to form an electric heating layer; the upper and lower surfaces of the electric heating layer are both laid with an adhesive layer, and the isolation layer is laid on the side of the upper and lower adhesive layers away from the electric heating layer.

[0029] The electric heating module connection system includes an electric heating system intelligent control box, an electric heating system cable main line and an electric heating waterproof coil branch line connecting line; several electric heating system intelligent control boxes are arranged at intervals at the median strip along the length direction of the highway, the electric heating system cable main line is buried in the median strip and used in conjunction with several electric heating system intelligent control boxes, one end of the electric heating system cable main line is connected to one end of the electric heating waterproof coil branch line connecting line, the other end of the electric heating waterproof coil branch line connecting line is connected to the electric heating waterproof coil layer, and the electric heating system cable main line is connected to the clean energy power supply module system through the clean energy and electric heating system connecting line.

[0030] The clean energy power supply module system comprises a clean energy transformer box, a control box, a clean energy cable main line, a clean energy branch line connecting line, a median strip photovoltaic and wind energy combined sunshade board, a roadside photovoltaic and wind energy combined sunshade board and a slope photovoltaic board; a plurality of clean energy transformer boxes and control boxes are arranged at the median strip along the length direction of the highway and correspond to a plurality of intelligent control boxes of the electric heating system; the clean energy cable main line is buried in the median strip or the roadside slope and is used in combination with the plurality of clean energy transformer boxes and control boxes; one end of the clean energy cable main line is connected with one end of the clean energy branch line connecting line, the other end of the clean energy branch line connecting line is connected with the median strip photovoltaic and wind energy combined sunshade board, the roadside photovoltaic and wind energy combined sunshade board and the slope photovoltaic board respectively, and the clean energy cable main line is connected with the electric heating system cable main line through the clean energy and electric heating system connecting line.

[0031] The slope structure comprises a curb, a guardrail and a roadbed slope; the curb is constructed at the upper side edge of the main body of the highway lane; the roadbed slope is constructed at the side edge of the main body of the highway lane and the curb and is isolated from the side surface and the bottom surface of the main body of the highway lane by a seepage-proof film; and the guardrail is installed on the roadbed slope and located outside the curb.

[0032] Compared with the prior art, the present application has the following beneficial effects:

[0033] 1. The present application can keep the road surface at a constant temperature of 5-10 DEG C in winter and snow weather, completely eliminate the snow and ice disasters on the road surface, significantly reduce the number of freeze-thaw cycles of the road surface in winter, has obvious temperature maintenance effect on the road surface, and has a positive effect on prolonging the overall service life of the road; compared with the traditional road surface structure, the present application is equivalent to adding only one sealing layer (functional layer) structure, can increase the waterproof and water resistance of the road surface, and improve the integrity of the road surface.

[0034] 2. The present application adopts a self-sufficient energy supply mode, can balance, adjust and supplement the electric power supply of the clean energy in winter and summer through the "source network load storage" of the national power grid, and reduces the energy consumption, thereby solving the problem of high energy consumption of the electric heat tracing band in the prior art.

[0035] 3、The application can be applied to the construction of new expressways and the reconstruction of existing expressways, the construction process is simple and easy to control, the quality is guaranteed, the application scenarios can be extended to other grades of highways with important strategic positions, important city roads of various grades, bridge deck pavement of large longitudinal slope, pedestrian pavement in old people concentrated areas such as nursing homes, large longitudinal slope scenic roads and important square places such as Tiananmen Square, the application range is wide, and the problem that the electric heating tape in the prior art is not suitable for highway paving is solved.

[0036] 4、For new expressways, the addition of the electric heating system of the application has little effect on the overall cost, and the increase of the engineering construction cost is within an acceptable range. For existing expressways, the electric heating reconstruction can be combined with the highway maintenance and renovation plan, the construction is simple and fast, the cost is slightly increased, but the ice and snow removal effect is remarkable, the input-output ratio is huge, and great economic benefits are obtained, and the problem that the investment in ice and snow removal of city roads and highways in the prior art is high, the effect is poor, and the effect is not ideal is solved. BRIEF DESCRIPTION OF DRAWINGS

[0037] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description of exemplary embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which like reference characters refer to the like parts throughout the different views.

[0038] Figure 1 is a plan view of the expressway electric heating system of the application;

[0039] Figure 2 is a cross-sectional view of the expressway electric heating system of the application;

[0040] Figure 3 is an exploded view of the electric heating waterproofing membrane layer in the expressway electric heating system of the application.

[0041] In the figure, 1 is a roadbed, 2 is a road surface cushion structure, 3 is a road surface base structure, 4 is a penetrating layer, 5 is a seal coat, 6 is a lower layer of a road surface surface layer structure, 7 is a bonding layer, 8 is a middle layer of a road surface surface layer structure, 9 is an electric heating waterproof roll material layer, 9-1 is an isolation layer, 9-2 is a glue layer, 9-3 is a heat conduction layer, 9-4 is a heating layer, 9-5 is a heat insulation layer, 10 is an upper layer of a road surface surface layer structure, 11 is an electric heating module connection system, 11-1 is an intelligent control box of an electric heating system, 11-2 is a main cable of an electric heating system, 11-3 is a branch connection line of an electric heating waterproof roll material, 12 is a connection line of a clean energy and an electric heating system, 13 is a clean energy power supply module system, 13-1 is a clean energy transformer box and control box, 13-2 is a main cable of a clean energy, 13-3 is a branch connection line of a clean energy, 13-4 is a middle strip light-shielding plate combined with wind energy, 13-5 is a roadside light-shielding plate combined with wind energy, 13-6 is a photovoltaic panel foundation, 13-7 is a slope photovoltaic panel, 14 is a cement mortar, 15 is a vertical curb stone, 16 is an edge closing curb stone, 17 is a guardrail, 18 is an anti-seepage film, 19 is a roadbed slope, 20 is a splicing joint, 21 is a cable connection well, and 22 is a highway lane main body. DETAILED DESCRIPTION

[0042] The highway electric heating system proposed by the present application is further described in detail below in combination with the accompanying drawings and specific embodiments. The advantages and features of the present application will be more apparent according to the following description and claims. It should be noted that the accompanying drawings are all in a very simplified form and all use non-precise proportions, only for the purpose of facilitating and clarifying the purpose of assisting in the description of the embodiments of the present application.

[0043] Please refer to the accompanying drawings Figure 1 and the accompanying drawings Figure 2 A highway electric heating system, comprising a roadbed 1, a road surface cushion structure 2, a road surface base structure 3, a penetrating layer 4, a seal coat 5, a lower layer of a road surface surface layer structure 6, a bonding layer 7, a middle layer of a road surface surface layer structure 8, an electric heating waterproof roll material layer 9, an upper layer of a road surface surface layer structure 10, an electric heating module connection system 11, a connection line of a clean energy and an electric heating system 12, and a clean energy power supply module system 13; the road surface cushion structure 2, the road surface base structure 3, the penetrating layer 4, the seal coat 5, the lower layer of the road surface surface layer structure 6, the bonding layer 7, the middle layer of the road surface surface layer structure 8, the electric heating waterproof roll material layer 9, and the upper layer of the road surface surface layer structure 10 are sequentially laid on the roadbed 1 from bottom to top to form a highway lane main body 22; the edge of the highway lane main body 22 is provided with a slope structure, the slope structure between the two-way highway lane main body 22 serves as a middle strip, and the slope structure far away from each other of the two-way highway lane main body 22 serves as a roadside slope; the electric heating module connection system 11, the connection line of the clean energy and the electric heating system 12, and the clean energy power supply module system 13 are mainly arranged at the slope structure, the electric heating waterproof roll material layer 9 serves as a seal coat, and the electric heating module connection system 11 is connected with the clean energy power supply module system 13 through the connection line of the clean energy and the electric heating system 12.

[0044] Preferably, the clean energy power supply module system 13 can use solar energy as clean energy, and can also select other forms of clean energy such as wind energy according to the actual use scene. The clean energy power supply module system 13 generates electric energy and supplies power to the electric heating waterproof roll material layer 9 through the electric heating module connection system 11, so as to heat the highway lane main body 22, and keep the road surface at a constant temperature of 5-10℃ in winter and snow weather, so as to completely eliminate the snow and ice disasters on the road surface, significantly reduce the freeze-thaw cycle times of the road surface in winter, and prolong the overall service life of the road.

[0045] Please refer to the accompanying drawings Figure 3 The electric heating waterproof roll material layer 9 comprises an isolation layer 9-1, an adhesive layer 9-2, a heat conduction layer 9-3, a heating layer 9-4 and a heat insulation layer 9-5. The heat conduction layer 9-3 is laid on the upper surface of the heating layer 9-4, and the heat insulation layer 9-5 is laid on the lower surface of the heating layer 9-4, forming an electric heating layer. The upper and lower surfaces of the electric heating layer are both laid with the adhesive layer 9-2, and the upper and lower adhesive layers 9-2 are both laid with the isolation layer 9-1 on the side away from the electric heating layer.

[0046] The electric heating waterproof roll material layer 9 can be made of the existing DRT-X series industrial electric heating blanket combined with the road SBS modified asphalt sealing technology, can be adjusted at multiple gears to keep constant temperature heating and is sealed and waterproof, the structure is modularized to support expansion and splicing, the aviation plug is quickly assembled safely and efficiently, and the intelligent control system is fine management. Specifically, the isolation layer 9-1 can be made of a PE film or a silicon oil film or an isolation paper, the adhesive layer 9-2 can be made of polyester felt (the upper and lower surfaces are covered with SBS modified asphalt adhesive layers), the isolation layer 9-1 and the adhesive layer 9-2 constitute SBS modified asphalt waterproof roll material, and are used for sealing and wrapping the electric heating layer; the heat conduction layer 9-3 can be made of an aluminum mold adhesive tape, has the functions of high-temperature resistance and enhanced upward heat conduction, the heating layer 9-4 can be made of the DRT-X series industrial electric heating blanket, the heat insulation layer 9-5 can be made of an aerosol felt or glass wool or rock wool, has the function of heat insulation and heat preservation, and can reduce the loss of lower heat, thereby reducing energy consumption.

[0047] The existing DRT-X series industrial electric heating blanket comprises a heating layer, an insulation protection layer, a temperature control system and the like, and the specific structure and working principle thereof will not be described here.

[0048] The existing polyester felt is a waterproof material made of a styrene-butadiene-styrene (SBS) thermoplastic elastomer as a modifier, modified petroleum asphalt, impregnated with a base and covered with an isolation material, has good waterproof performance, and can ensure effective waterproof sealing of the electric heating layer.

[0049] Preferably, the electric heating waterproofing membrane layer 9 can be made into a size of 1-20 m in length and width (for example, 5-20 m in length and 1-10 m in width) according to the existing technical conditions, and can be flexibly assembled in modules according to the use conditions. The adjacent two electric heating waterproofing membrane layers 9 can be reliably connected through the splicing joint 20, and can be implemented on a large scale, constructed quickly, and locally replaced and maintained, and is completely economic and feasible under the current conditions. The electric heating waterproofing membrane layer 9 is laid by a hot melting and self-adhesive method, and is convenient to construct. The electric heating waterproofing membrane layer 9 has the following performances: the temperature range is -25-100℃, and can remain flexible at -20- -25℃; the tensile strength is more than 800 N / 50 mm for a polyester base product, and is less for a glass fiber base; the durability is aging-resistant and fatigue-resistant, and the service life is more than 20 years; and the power is 100-300 W / square meter. For a newly built highway, the service life can completely meet the design service life.

[0050] Please refer to the attached Figure 1 and the attached Figure 2 The electric heating module connection system 11 includes an electric heating system intelligent control box 11-1, an electric heating system cable main line 11-2, and an electric heating waterproofing membrane branch line connection line 11-3. A plurality of electric heating system intelligent control boxes 11-1 are arranged at the median strip along the length direction of the highway at intervals. The electric heating system cable main line 11-2 is buried in the median strip and is used in combination with the plurality of electric heating system intelligent control boxes 11-1. One end of the electric heating system cable main line 11-2 is connected to one end of the electric heating waterproofing membrane branch line connection line 11-3 through a cable connection well 21. The other end of the electric heating waterproofing membrane branch line connection line 11-3 is connected to the heating layer 9-4 of the electric heating waterproofing membrane layer 9. The electric heating system cable main line 11-2 is connected to a clean energy power supply module system 13 through a clean energy and electric heating system connection line 12.

[0051] Preferably, one electric heating system intelligent control box 11-1 is arranged every 1-3 km. The electric heating system intelligent control box 11-1 is internally provided with integrated elements such as intelligent temperature control, switch control, and remote monitoring control. The electric heating system intelligent control box 11-1 can realize temperature level control, remote monitoring, and branch section switch control according to needs for the electric heating waterproofing membrane layer 9.

[0052] Preferably, the electric heating system cable main line 11-2 can adopt armored cable (such as YJV22 type) and be protected by a PVC pipe, and is used for transmitting power to the electric heating waterproofing membrane layer 9. The electric heating system cable main line 11-2 is directly buried in a roadside slope (a soil road shoulder, a roadbed slope, etc.) or the median strip, and is used in combination with the electric heating system intelligent control box 11-1.

[0053] The electric heating waterproofing membrane branch connection line 11-3 is preferably a sheathed cable (such as YJV22 type) protected by a galvanized steel pipe, and is connected to the electric heating waterproofing membrane layer 9 by a compression-proof waterproof aviation plug.

[0054] The cable connection well 21 is a connection well for the electric heating waterproofing membrane branch connection line 11-3 and the electric heating system cable main line 11-2. The cable connection well 21 in the electric heating module connection system 11 is preferably provided with a piercing clamp every 10-20 m.

[0055] Please refer to the accompanying drawings Figure 1 and the accompanying drawings Figure 2 The clean energy power supply module system 13 includes clean energy transformer boxes, control boxes 13-1, clean energy cable main lines 13-2, clean energy branch connection lines 13-3, median strip photovoltaic and wind energy combined light shields 13-4, roadside photovoltaic and wind energy combined light shields 13-5, and slope photovoltaic panels 13-7. A plurality of clean energy transformer boxes and control boxes 13-1 are arranged at the median strip along the length direction of the road and correspond to a plurality of electric heating system intelligent control boxes 11-1. The clean energy cable main lines 13-2 are buried in the median strip or the roadside slope and are used in conjunction with the clean energy transformer boxes and control boxes 13-1. One end of the clean energy cable main line 13-2 is connected to one end of the clean energy branch connection line 13-3 through the cable connection well 21. The other end of the clean energy branch connection line 13-3 is connected to the median strip photovoltaic and wind energy combined light shield 13-4, the roadside photovoltaic and wind energy combined light shield 13-5, and the slope photovoltaic panel 13-7, respectively. The clean energy cable main line 13-2 is connected to the electric heating system cable main line 11-2 through the clean energy and electric heating system connection line 12. The median strip photovoltaic and wind energy combined light shield 13-4 is installed at the median strip. The roadside photovoltaic and wind energy combined light shield 13-5 and the slope photovoltaic panel 13-7 are installed at the roadside slope.

[0056] The clean energy transformer boxes and control boxes 13-1 are preferably provided every 1-3 km and correspond to the electric heating system intelligent control boxes 11-1, so as to provide solar energy, wind energy, and other clean energy power to the electric heating waterproofing membrane layer 9 and the electric heating module connection system 11.

[0057] The clean energy cable main line 13-2 is preferably a sheathed cable (such as YJV22 type) protected by a PVC pipe and serves as the power transmission main line of the clean energy power supply module system 13. The clean energy cable main line 13-2 can be directly buried in the roadside slope (dirt road shoulder, roadbed slope, etc.) or the median strip and is used in conjunction with the clean energy transformer boxes and control boxes 13-1.

[0058] The clean energy branch line 13-3 is preferably a sheathed cable (such as YJV22 type) protected by a galvanized steel pipe, and is connected to the clean energy cable main line 13-2 through a cable well 21. The cable well 21 in the clean energy power supply module system 13 is preferably a branch line connected by a piercing clamp, and is provided at intervals of about 100-200 m.

[0059] The mid-division strip photovoltaic and wind energy combined sunshade 13-4, the roadside photovoltaic and wind energy combined sunshade 13-5, and the slope photovoltaic panel 13-7 are energy collection and conversion devices of the clean energy power supply module system 13. The mid-division strip photovoltaic and wind energy combined sunshade 13-4 is preferably provided at the edge of the mid-division strip, with a height of 2 m, and serves as a sunshade for the main body 22 of the road (the road lane). The roadside photovoltaic and wind energy combined sunshade 13-5 is preferably provided at the roadside shoulder or the slope 19 of the roadbed, with a height of 1.5 m, and serves as a sunshade for the external environment, without affecting the distant view. The slope photovoltaic panel 13-7 is provided at the slope 19 of the roadbed through a photovoltaic panel foundation 13-6, and its size can be determined according to the conditions of the slope 19 of the roadbed.

[0060] Please refer to the attached Figure 1 and the attached Figure 2 The slope structure includes a curbstone 15, a guardrail 17, and a roadbed slope 19. The curbstone 15 is constructed on the upper side edge of the main body 22 of the road through cement mortar 14. The roadbed slope 19 is constructed on the side edge of the main body 22 of the road and the curbstone 15, and is isolated from the side and bottom surfaces of the main body 22 of the road through a seepage-proof film 18. The guardrail 17 is installed on the roadbed slope 19 and located outside the curbstone 15 (i.e., away from the main body 22 of the road).

[0061] The guardrail 17 is preferably a wave-shaped guardrail according to actual protection needs, and the seepage-proof film 18 is preferably a two-cloth-one-film structure. An edge closing curbstone 16 can be constructed on the curbstone 15 located at the roadside. The roadbed 1, the road surface cushion structure 2, the road surface base structure 3, the penetrating layer 4, the sealing layer 5, the lower layer 6 of the road surface surface layer structure, the adhesive layer 7, the middle layer 8 of the road surface surface layer structure, the upper layer 10 of the road surface surface layer structure, the curbstone 15, the guardrail 17, and the roadbed slope 19 are conventional structural forms of a road, and their specific structural forms can be adjusted according to actual needs, and thus the specific structures and construction processes are not described herein.

[0062] Preferably, the thickness of the upper layer 10 of the road surface layer structure is 4 cm, the thickness of the electric heating waterproof roll material layer 9 is 1 cm, the thickness of the middle layer 8 of the road surface layer structure is 6 cm, the thickness of the lower layer 6 of the road surface layer structure is 8 cm, the thickness of the seal layer 5 is 0.8 cm, the road base structure 3 can be provided with two layers, and the thickness of each layer of the road base structure 3 is 20 cm, and the thickness of the road cushion structure 2 is 20 cm. The surface slope of the highway lane main body 22 can be 1.5%, which is convenient for draining water to both sides and preventing road ponding.

[0063] Please refer to the attached Figure 1 to the attached Figure 3 , the clean energy power supply module system 13 and the electric heating module connection system 11 of the application adopt a self-power supply mode, and the energy is supplied in a self-sufficient manner. The clean energy power supply module system 13 arranged in the side slope structure and the middle strip supplies power to the electric heating waterproof roll material layer 9 and the electric heating module connection system 11, and can also access the national power grid at night to consume part of the excess power. In spring, summer and autumn, it can also be a powerful supplement to the national power grid.

[0064] For a newly built highway, the electric heating waterproof roll material layer 9 is added between the middle layer 8 of the road surface layer structure and the upper layer 10 of the road surface layer structure, and the electric heating module connection system 11 and the clean energy power supply module system 13 are implemented synchronously with the road civil engineering.

[0065] For an existing highway, the existing road can be electrically heated and transformed in combination with the repair plan of the existing highway. The specific construction method is as follows:

[0066] (1) The existing diseases of the existing highway are treated according to the actual situation.

[0067] (2) After milling the 5 cm thick asphalt layer of the existing highway, 1 cm thick electric heating waterproof roll material layer 9 is added and wired, and an electric heating waterproof roll material branch line connection line 11-3 is arranged every 10-30 m.

[0068] (3) The electric heating waterproof roll material layer 9 is inspected and debugged to make it work normally.

[0069] (4) 4 cm thick asphalt concrete, i.e. the upper layer 10 of the road surface layer structure, is added, and the existing road surface elevation is maintained unchanged.

[0070] (5) According to the design requirements, the electric heating system cable main line 11-2 and an electric heating system intelligent control box 11-1 arranged every kilometer are excavated and buried at the roadbed side slope 19, the roadside soil shoulder or the middle strip position.

[0071] (6) In the middle strip, add 2m high photovoltaic and wind energy combined sunshade board 13-4, at the same time, lay clean energy cable main line 13-2 and set clean energy transformer box and control box 13-1 every kilometer.

[0072] (7) In the soil road shoulder, add 1.5m high roadside photovoltaic and wind energy combined sunshade board 13-5, and add slope photovoltaic board 13-7 on the roadbed slope 19, at the same time, lay clean energy cable main line 13-2 and set clean energy transformer box and control box 13-1 every kilometer.

[0073] (8) Adopt clean energy and electric heating system connection line 12 to connect electric heating waterproof roll material layer 9 and electric heating module connection system 11 with clean energy power supply module system 13.

[0074] (9) Debug, set, test run and check the working conditions of each system component of electric heating waterproof roll material layer 9, electric heating module connection system 11 and clean energy power supply module system 13 respectively.

[0075] (10) Formal operation.

[0076] (11) Regular maintenance.

[0077] For the electric heating system in the newly built expressway and the built expressway, the regular maintenance scheme is that if local road surface has electric heating system failure, the local road surface can be milled after the cause is found, the electric heating waterproof roll material layer 9 of the part of the road surface is replaced and reconnected to the system, and then the road surface is covered with asphalt surface layer structure, i.e. upper layer 10 of road surface surface layer structure, after normal work.

[0078] The application can be directly applied to the newly built expressway, and for the existing expressway, the electric heating facility can be reconstructed in combination with the large and medium repair plan of the highway, the construction technology is simple and convenient, the original road surface structure is not damaged, the quality is easy to control, the cost is reasonable and the economy is good. The electric heating waterproof roll material layer 9 adopts modular design, the construction process is more modular and intelligent, and the maintenance and monitoring during construction and later use are convenient. Compared with the existing road large and medium repair project, the construction and installation engineering cost increased by the electric heating reconstruction is not much, but the direct and indirect benefits are huge, the electric heating expressway system can completely prevent the occurrence of rain and snow freezing disasters, significantly reduce the road ice and snow removal cost, reduce the traffic safety hidden danger in rain and snow weather, ensure the smooth traffic of road, significantly reduce the direct and indirect economic losses caused by rain and snow freezing disasters, and have very positive significance to economic and social development.

[0079] The above description is only a description of the preferred embodiments of the application, and does not limit the scope of the application in any way, and any change and modification of the application by the person skilled in the art according to the above disclosure is within the protection scope of the claims.

Claims

1. A highway electrothermal system, characterized in that: include: Roadbed (1), pavement cushion structure (2), pavement base structure (3), permeable layer (4), sealing layer (5), pavement surface structure lower layer (6), adhesive layer (7), pavement surface structure middle layer (8), electric heating waterproof coiled material layer (9), pavement surface structure upper layer (10), electric heating module connection system (11), clean energy and electric heating system connection line (12) and clean energy power supply module system (13); pavement cushion structure (2), pavement base structure (3), permeable layer (4), sealing layer (5), pavement surface structure lower layer (6), adhesive layer (7), pavement surface structure middle layer (8), electric heating waterproof coiled material layer (9) and pavement surface structure upper layer (1 0) are laid on the roadbed (1) from bottom to top in sequence to form a highway lane body (22); slope structures are provided at the edges of both sides of the highway lane body (22), the slope structure between the two-way highway lane bodies (22) serves as a median strip, and the slope structures on the sides of the two-way highway lane bodies (22) away from each other serve as roadside slopes; the electric heating module connection system (11), the clean energy and electric heating system connection line (12) and the clean energy power supply module system (13) are arranged at the slope structure, the electric heating waterproof coiled material layer (9) also serves as a sealing layer, and the electric heating module connection system (11) is connected to the clean energy power supply module system (13) through the clean energy and electric heating system connection line (12).

2. The highway electrothermal system according to claim 1, characterized in that: The electric heating waterproof coiled material layer (9) comprises an isolation layer (9-1), an adhesive layer (9-2), a heat conduction layer (9-3), a heating layer (9-4) and a heat insulation layer (9-5); the heat conduction layer (9-3) is laid on the upper surface of the heating layer (9-4), and the heat insulation layer (9-5) is laid on the lower surface of the heating layer (9-4) to form an electric heating layer; the upper and lower surfaces of the electric heating layer are both laid with an adhesive layer (9-2), and the isolation layer (9-1) is laid on the side of the upper and lower adhesive layers (9-2) away from the electric heating layer.

3. The highway electrothermal system according to claim 1, characterized in that: The electric heating module connection system (11) comprises an electric heating system intelligent control box (11-1), an electric heating system cable main line (11-2) and an electric heating waterproof coiled material branch line connection line (11-3); a plurality of electric heating system intelligent control boxes (11-1) are arranged at intervals at the median strip along the length direction of the highway; the electric heating system cable main line (11-2) is buried in the median strip and used in conjunction with the plurality of electric heating system intelligent control boxes (11-1); one end of the electric heating system cable main line (11-2) is connected to one end of the electric heating waterproof coiled material branch line connection line (11-3); the other end of the electric heating waterproof coiled material branch line connection line (11-3) is connected to the electric heating waterproof coiled material layer (9); the electric heating system cable main line (11-2) is connected to the clean energy power supply module system (13) via the clean energy and electric heating system connection line (12).

4. The highway electrothermal system according to claim 3, characterized in that: The clean energy power supply module system (13) includes a clean energy transformer box, a control box (13-1), a clean energy cable main line (13-2), a clean energy branch line connection line (13-3), a center-dividing strip photovoltaic and wind energy combined sunshade (13-4), a roadside photovoltaic and wind energy combined sunshade (13-5) and a slope photovoltaic panel (13-7); a plurality of clean energy transformer boxes and control boxes (13-1) are arranged at intervals along the length direction of the highway at the center-dividing strip and are arranged one-to-one with a plurality of electric heating system intelligent control boxes (11-1); the clean energy cable main line (13-2) is buried in the center-dividing strip or the roadside slope and is matched with the plurality of clean energy transformer boxes and control boxes (13-1). Use: one end of the clean energy cable main line (13-2) is connected to one end of the clean energy branch line connecting line (13-3), the other end of the clean energy branch line connecting line (13-3) is respectively connected to the center-dividing strip photovoltaic and wind energy combined sunshade (13-4), the roadside photovoltaic and wind energy combined sunshade (13-5) and the slope photovoltaic panel (13-7), the clean energy cable main line (13-2) is connected to the electric heating system cable main line (11-2) through the clean energy and electric heating system connecting line (12); the center-dividing strip photovoltaic and wind energy combined sunshade (13-4) is installed at the center-dividing strip, and the roadside photovoltaic and wind energy combined sunshade (13-5) and the slope photovoltaic panel (13-7) are installed at the roadside slope.

5. The highway electrothermal system according to claim 1, characterized in that: The slope structure comprises a curbstone (15), a guardrail (17) and a roadbed slope (19); the curbstone (15) is constructed at the upper side edge of the highway lane body (22); the roadbed slope (19) is constructed at the side edges of the highway lane body (22) and the curbstone (15), and is isolated from the side and bottom surfaces of the highway lane body (22) by an anti-seepage membrane (18); the guardrail (17) is installed on the roadbed slope (19) and is located outside the curbstone (15).

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