Cold region airport runway snow melting and roadbed frost heaving prevention system based on solar energy and construction method thereof

Abstract

A cold region airport runway accumulated snow melting and roadbed frost heaving prevention system based on solar energy and a construction method thereof comprise the following steps that firstly, a sand gravel soil cushion layer is constructed, and a temperature sensor is buried in the sand gravel soil cushion layer; secondly, a heat insulation layer is laid in the sand gravel soil cushion layer; thirdly, a sand gravel soil cushion layer is constructed on the top of the heat insulation layer; a first resistance wire layer is buried in the sand gravel soil cushion layer; fourthly, a water-stable gravel layer is constructed, and a temperature sensor is buried in the sand gravel soil cushion layer; fifthly, a second resistance wire layer is laid in the water-stable gravel layer; sixthly, a concrete pavement layer is constructed; 7, installing the lead-acid storage battery, and connecting the second resistance wire layer and the first resistance wire layer with the lead-acid storage battery; and 8, constructing a solar panel, a laser snow depth sensor, a data acquisition instrument, a temperature controller and a signal wireless transmitter. The technical problems that in the prior art, the snow removing, deicing and roadbed anti-freezing effects are poor, cost is high, and environment friendliness is not achieved are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy utilization and infrastructure maintenance, and particularly relates to a solar-based snow melting and subgrade frost heave prevention system for cold region airport runways and its construction method. Background Art

[0002] In cold regions, airport runways are often affected by snow accumulation and frost heave, resulting in runway damage, flight delays, and even endangering flight safety. Traditional snow removal and anti-freezing measures mainly rely on mechanical snow clearing, chemical de-icing, and subgrade replacement and improvement technologies. However, these methods have problems such as high cost, environmental harm, complex operation, and limited effects. Especially in extreme climate conditions, the effects of traditional methods are more significantly limited. With the global emphasis on the utilization of renewable energy, solar energy, as a clean and renewable energy source, has gradually been widely applied in various fields. However, in cold regions, the utilization of solar energy is restricted by seasonal changes and low temperature conditions. Especially in winter, the reduction of sunlight intensity and sunshine time significantly reduces the collection and conversion efficiency of solar energy. Therefore, how to efficiently and continuously utilize solar energy to cope with the negative impacts of cold weather on infrastructure has become an important research topic. Summary of the Invention

[0003] The purpose of the present invention is to provide a solar-based snow melting and subgrade frost heave prevention system for cold region airport runways and its construction method, so as to solve the technical problems of poor snow removal, de-icing, and subgrade anti-freezing effects, high cost, and environmental unfriendliness existing in the prior art.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions.

[0005] A solar-based snow melting and subgrade frost heave prevention system for cold region airport runways, comprising a runway structure, a solar power generation system, a frost heave prevention system, a monitoring system and a signal wireless transmitter; the runway structure includes a gravel soil cushion layer, a water-stabilized macadam layer and a concrete pavement layer arranged in sequence from bottom to top; the frost heave prevention system is arranged in the runway structure and includes a first resistance wire layer and a second resistance wire layer; the first resistance wire layer is arranged on the top of the gravel soil cushion layer; the second resistance wire layer is buried on the top of the water-stabilized macadam layer; insulating protective layers are wrapped on the outer surfaces of the first resistance wire layer and the second resistance wire layer; heat insulation layers are respectively arranged at the bottom of the first resistance wire layer and the peripheral sides of the runway structure, and the upper ends of the heat insulation layers extend into the concrete pavement layer; the solar power generation system is arranged on both sides of the runway structure and includes solar panels and lead-acid batteries; there is a group of solar panels, which are arranged at intervals along the longitudinal direction of the runway structure; the lead-acid batteries are electrically connected to the group of solar panels for storing the electric energy of the solar panels, and the lead-acid batteries are respectively electrically connected to the first resistance wire layer and the second resistance wire layer; the monitoring system includes a laser snow depth sensor, a temperature sensor group, a data collector and a temperature controller; there are three groups of temperature sensor groups, which are respectively arranged at intervals along the longitudinal direction of the runway structure on both sides and the longitudinal axis of the runway structure; and each temperature sensor group includes a plurality of temperature sensors, and the plurality of temperature sensors are arranged at intervals vertically in the gravel soil cushion layer and the water-stabilized macadam layer; the temperature sensors are teleconnected to the data collector, and the temperature sensors transmit the real-time monitored temperature data to the data collector; the data collector is teleconnected to the temperature controller; the temperature controller is respectively electrically connected to the first resistance wire layer, the second resistance wire layer, the temperature sensors and the lead-acid batteries, and the temperature controller adjusts the current flowing through the first resistance wire layer and the second resistance wire layer by receiving the data of the temperature sensors; the laser snow depth sensor is installed near the runway structure for measuring the snow depth on the surface of the concrete pavement layer; the laser snow depth sensor is teleconnected to the data collector and transmits the collected signal to the data collector; the data collector and the temperature controller are connected to a remote control center through telecommunication; the signal wireless transmitter is installed on both sides of the runway structure for transmitting the data in the monitoring system to the remote control center.

[0006] Preferably, it further includes a wind power generation system; the wind power generation system includes a wind turbine, a rectifier and a wind power generation controller. The wind turbine is arranged on both sides of the runway structure for capturing the airflow during aircraft takeoff and landing or natural wind energy. The wind turbine converts alternating current into direct current through the rectifier and is connected to the lead-acid battery through the wind power generation controller.

[0007] Preferably, a cross slope is provided on the top of the concrete pavement layer, and the slope of the cross slope is 1% - 3%.

[0008] Preferably, the spacing between vertically adjacent temperature sensors is not greater than 30 cm; the spacing between longitudinally adjacent temperature sensor groups is not greater than 5 m.

[0009] Preferably, the laser snow depth sensor is installed above the runway structure or obliquely above both sides of the runway structure.

[0010] Preferably, the remote monitoring system further includes a fault alarm device; the fault alarm device is connected to the remote control center by telecommunication; if the temperature of the temperature sensor exceeds the preset range, the fault alarm device automatically alarms and records the fault information, facilitating timely maintenance by maintenance personnel.

[0011] Preferably, a power-off protection device and an over-temperature protection device are provided on the circuits between the lead-acid battery and the first resistance wire layer and the second resistance wire layer.

[0012] A construction method of a solar-based snow melting and subgrade frost heave prevention system for cold region airports includes the following steps: Step 1, construct a gravelly soil cushion layer, and at the same time bury temperature sensors in the gravelly soil cushion layer; Step 2, lay a heat insulation layer at a position close to the top surface in the gravelly soil cushion layer, so that the four peripheral edges of the heat insulation layer extend beyond the gravelly soil cushion layer; Step 3, continue to construct the gravelly soil cushion layer on top of the heat insulation layer until the gravelly soil cushion layer is constructed to the design elevation; at the same time, bury the first resistance wire layer in the gravelly soil cushion layer on top of the heat insulation layer, so that the power connection end of the first resistance wire layer extends outside the design top surface of the runway structure; Step 4, construct a water-stabilized macadam layer, and at the same time bury temperature sensors in the gravelly soil cushion layer; Step 5, lay a second resistance wire layer at a position close to the top surface in the water-stabilized macadam layer, so that the power connection end of the second resistance wire layer extends outside the design top surface of the runway structure; Step 6, construct a concrete pavement layer; Step 7, install a lead-acid battery, and connect both the second resistance wire layer and the first resistance wire layer to the lead-acid battery; Step 8, construct solar panels, laser snow depth sensors, data collectors, temperature controllers and signal wireless transmitters.

[0013] Compared with the prior art, the present invention has the following characteristics and beneficial effects.

[0014] 1. Intelligent control and efficient energy utilization The system of the present invention collects energy through solar panels and stores it in lead-acid batteries. Combined with an intelligent control system, it can efficiently convert electrical energy into heat energy for the temperature management of runways and roadbeds. The temperature controller automatically activates or adjusts the heating system according to real-time monitoring data such as ambient temperature and snow depth, achieving automatic snow removal and anti-frost heaving under different climatic conditions, avoiding traditional methods such as salting, spreading snow melting agents, or manual snow removal. While the system saves energy, it ensures the safety and usability of the runway.

[0015] 2. Automated operation and remote monitoring The system of the present invention is equipped with temperature sensors and laser snow depth sensors, which can real-time feedback the runway conditions and transmit the data to the control center for remote monitoring and early warning. The fault alarm function further improves the automation level of the system. When an abnormality is detected, the system can automatically record and issue an alarm, helping to quickly locate the problem, thus improving the response efficiency and reducing the need for manual intervention.

[0016] 3. Structural reliability and durability In the system structure of the present invention, a heat insulation layer and a resistance wire layer are designed, and multiple protection measures are adopted to prevent the erosion of the foundation structure by the low-temperature environment. The heat insulation layer effectively isolates the low temperature, and the resistance wire layer resists the damage risk in the frost heaving cycle, showing excellent performance in heat insulation and anti-frost heaving. This design extends the service life of the runway and the system, significantly reducing the maintenance difficulty and cost of airports in cold regions.

[0017] 4. Adaptive energy management and energy-saving effect Through the intelligent charge and discharge management system of the present invention, the system can maximize the storage of solar energy during sunny periods and use it at night or on cloudy days to ensure the continuous operation of the system. At the same time, the temperature controller dynamically adjusts the heating intensity of the resistance wire layer, reducing energy consumption while meeting the temperature requirements, thus extending the battery life and further reducing the operating cost.

[0018] 5. Early warning and remote maintenance support The system of the present invention has a remote monitoring function, which can transmit real-time data and alarms to the remote control center and automatically record the situation where the temperature exceeds the preset range. This design not only facilitates the management personnel to grasp the operation status of the runway in real time but also enables a quick response in case of a failure, ensuring the safety of airport operations.

[0019] 6. Environmental protection and economic benefits The system of the present invention mainly uses renewable solar energy as the energy source, avoiding the use of chemical agents in traditional snow removal methods and reducing environmental pollution. The intelligent operation and energy-saving design reduce the maintenance cost, and long-term use significantly reduces the operating expenses of the airport, providing an environmentally friendly and economical solution for the airport. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic structural diagram of the snow melting and subgrade frost heave prevention system for cold region airport runways of the present invention.

[0022] Figure 2 It is a schematic layout structure diagram of the first resistance wire layer in the runway of the present invention.

[0023] Reference numerals: 1 - solar panel, 2 - laser snow depth sensor, 3 - lead-acid battery, 4 - temperature controller, 5 - data collector, 6 - signal wireless transmitter, 7 - first resistance wire layer, 8 - concrete pavement layer, 9 - second resistance wire layer, 10 - water-stabilized macadam layer, 11 - gravel soil cushion layer, 12 - temperature sensor, 13 - heat insulation layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] As Figure 1-2As shown in the figure, this solar-based snow melting and subgrade frost heave prevention system for cold region airport runways includes a runway structure, a solar power generation system, a frost heave prevention system, a monitoring system, and a signal wireless transmitter 6; the runway structure includes a gravelly soil cushion layer 11, a water-stabilized macadam layer 10, and a concrete pavement layer 8 arranged in sequence from bottom to top; the frost heave prevention system is arranged inside the runway structure and includes a first resistance wire layer 7 and a second resistance wire layer 9; the first resistance wire layer 7 is arranged on the top of the gravelly soil cushion layer 11; the second resistance wire layer 9 is buried on the top of the water-stabilized macadam layer 10; insulating protective layers are wrapped on the outer surfaces of the first resistance wire layer 7 and the second resistance wire layer 9; heat insulation layers 13 are respectively arranged at the bottom of the first resistance wire layer 7 and on the surrounding sides of the runway structure, and the upper ends of the heat insulation layers 13 extend into the concrete pavement layer 8; perforations are arranged on the heat insulation layers 13 corresponding to the first resistance wire layer 7 and the second resistance wire layer 9, and the ends of the first resistance wire layer 7 and the second resistance wire layer 9 extend out of the runway structure from the perforations; the parts of the first resistance wire layer 7 and the second resistance wire layer 9 located outside the runway structure are buried in the foundation; the solar power generation system is arranged on both sides of the runway structure and includes solar panels 1 and lead-acid batteries 3; there is a group of solar panels 1, which are arranged at intervals along the longitudinal direction of the runway structure; the lead-acid batteries 3 are electrically connected to a group of solar panels 1 to store the electric energy of the solar panels 1, and the lead-acid batteries 3 are respectively electrically connected to the first resistance wire layer 7 and the second resistance wire layer 9; the solar panels 1 are the core energy source of the whole system; these solar panels 1 work throughout the year, converting solar energy into electric energy through the photovoltaic effect. During the day, especially in the period with strong solar radiation in summer, the solar panels 1 collect solar energy with the highest efficiency. The converted electric energy is transmitted to the lead-acid batteries 3 through cables. The capacity of the lead-acid batteries 3 is at least 100 ampere-hours, which can store a large amount of electric energy when solar energy is sufficient for use at night, on cloudy days, or when solar energy is insufficient in winter. The lead-acid batteries 3 are equipped with an intelligent charge and discharge management system to ensure the effective storage and efficient utilization of electric energy under different environmental conditions.The monitoring system includes a laser snow depth sensor 2, a temperature sensor group, a data collector 5, and a temperature controller 4; there are three groups of temperature sensors, which are arranged at intervals along the longitudinal direction of the runway structure on both sides and the longitudinal axis of the runway structure; and each temperature sensor group includes a plurality of temperature sensors 12, and the plurality of temperature sensors 12 are arranged at intervals vertically in the gravel soil cushion layer 11 and the water-stable macadam layer 10; the temperature sensors 12 are electrically connected to the data collector 5, and the temperature sensors 12 transmit the temperature data monitored in real time to the data collector 5; the data collector 5 is connected to the temperature controller 4, and the data collector converts the resistance signal into temperature; the temperature controller 4 is electrically connected to the first resistance wire layer 7, the second resistance wire layer 9, the temperature sensors 12, and the lead-acid battery 3 respectively. The temperature controller is used to monitor the temperature threshold and start and stop heating. It adjusts the current flowing through the first resistance wire layer 7 and the second resistance wire layer 9 by receiving the data of the temperature sensors 12; the temperature sensors 12 monitor the subgrade temperature in real time. The temperature sensors 12 can work under extreme temperature conditions, and the measurement accuracy is ±0.1 degree Celsius, ensuring the high precision and reliability of the temperature data; the temperature sensors 12 transmit the temperature data monitored in real time to the temperature controller 4 through cables. When the temperature controller 4 detects that the subgrade temperature drops below a preset safety threshold, such as 0 degree Celsius, it will automatically activate the first resistance wire layer 7 and the second resistance wire layer 9. The first resistance wire layer 7 and the second resistance wire layer 9 convert the electrical energy stored in the lead-acid battery 3 into heat energy, conduct heat to the subgrade, and gradually increase the subgrade temperature to prevent the subgrade from freezing and causing frost heave phenomena.

[0025] The temperature controller 4 has an intelligent adjustment function. According to the real-time temperature data fed back by the temperature sensor 12, it dynamically adjusts the heating intensity of the first resistance wire layer 7 and the second resistance wire layer 9. When the subgrade temperature approaches or reaches the safety threshold, the temperature controller will reduce or turn off the heating power of the resistance wire, ensuring the energy use efficiency of the system and avoiding overheating. The laser snow depth sensor 2 is installed near the runway structure to measure the snow depth on the surface of the concrete pavement layer 8. The laser snow depth sensor 2 is connected to the data acquisition instrument 5 through telecommunication to transmit the collected signal to the data acquisition instrument 5. The laser snow depth sensor 2 continuously monitors the snow condition on the runway surface. The laser snow depth sensor 2 uses phase laser ranging technology and can measure the snow depth with millimeter-level accuracy, and the maximum measurement range can reach 5 meters. The laser snow depth sensor 2 detects in real time whether there is snow accumulation on the runway surface and determines whether to start the snow melting program according to a preset snow depth threshold, such as 1 centimeter. When the laser snow depth sensor 2 detects that the snow depth exceeds the set threshold, it will immediately transmit the signal to the data acquisition instrument 5 through a cable, and the data acquisition instrument 5 further transmits the signal to the remote control center. After receiving the signal from the laser snow depth sensor 2, the remote control center transmits the feedback information to the temperature controller 4, and the temperature controller 4 controls the start of heating the runway surface and the subgrade below by the first resistance wire layer 7 and the second resistance wire layer 9. The heat generated by the resistance wire is quickly conducted to the runway surface to melt the snow, ensuring the cleanliness and safety of the runway surface. After the snow melts, the temperature controller 4 will automatically stop the heating operation of the resistance wire to prevent unnecessary energy consumption. The data acquisition instrument 5 and the temperature controller 4 are wirelessly transmitted and connected to the remote control center through an IoT card. The remote control center is used for remote monitoring, adjusting temperature settings, viewing data, and receiving alarms. The signal wireless transmitter 6 is installed on both sides of the runway structure and is used to transmit the data in the monitoring system to the remote control center. The signal wireless transmitter 6 uses a GPRS wireless network for data transmission, has a low-power design, can continuously work under extreme conditions, and can maintain independent operation for 72 hours when the external power supply is insufficient. The remote control center can monitor the temperature and snow condition of the runway in real time and make corresponding decisions based on the data, such as adjusting the settings of the temperature controller 4 or starting and stopping the resistance wire, etc.

[0026] In this embodiment, a wind power generation system is further included. The wind power generation system includes a wind turbine 14, a rectifier 15, and a wind power generation controller 16. The wind turbine 14 is arranged on both sides of the runway structure and is used to capture the airflow during aircraft takeoff and landing or natural wind energy. The wind turbine 14 converts alternating current into direct current through the rectifier 15 and is connected to the lead-acid battery 3 through the wind power generation controller 16.

[0027] In this embodiment, a cross slope is provided at the top of the concrete pavement layer 8, and the slope of the cross slope is 1% - 3%.

[0028] In this embodiment, the distance between vertically adjacent temperature sensors 12 is not greater than 30 cm; the distance between longitudinally adjacent temperature sensor groups is not greater than 5 m.

[0029] In this embodiment, the laser snow depth sensor 2 is installed above the runway structure or obliquely above both sides of the runway structure.

[0030] In this embodiment, the remote monitoring system further includes a fault alarm device; the fault alarm device is connected to the remote control center by telecommunication; if the temperature of the temperature sensor 12 exceeds the preset range, the fault alarm device automatically alarms and records the fault information, facilitating timely maintenance by maintenance personnel. In addition, the system has over-temperature protection and power-off protection functions to ensure the safety of the resistance wire 9 and other key components under abnormal conditions.

[0031] In this embodiment, power-off protection devices and over-temperature protection devices are provided on the circuits between the lead-acid battery 3 and the first resistance wire layer 7 and the second resistance wire layer 9 respectively to ensure the safety of the resistance wire 9 and other key components under abnormal conditions; the first resistance wire layer 7 and the second resistance wire layer 9 are both arranged in a mesh shape within the runway structure, and wires connected to the lead-acid battery 3 are respectively arranged at intervals on both sides of the mesh structure and at positions outside the runway structure.

[0032] In this embodiment, the first resistance wire layer 7 is arranged in a rectangular grid shape, the distance between horizontally adjacent first resistance wire layers 7 is 20 cm, and the distance between longitudinally adjacent first resistance wire layers 7 is 20 cm; the second resistance wire layer 9 is arranged in a rectangular grid shape, the distance between longitudinally adjacent second resistance wire layers 9 is 20 cm, and the distance between longitudinally adjacent second resistance wire layers 9 is 20 cm.

[0033] The construction method of this solar-based cold region airport runway snow melting and subgrade frost heave prevention system includes the following steps.

[0034] Step 1, construct the gravel soil cushion layer 11, and at the same time bury the temperature sensor 12 in the gravel soil cushion layer 11.

[0035] Step 2, lay the heat insulation layer 13 at a position close to the top surface in the gravel soil cushion layer 11, so that the four edges of the heat insulation layer 13 extend beyond the gravel soil cushion layer 11.

[0036] Step 3, continue to construct the gravel soil cushion layer 11 on the top of the heat insulation layer 13 until the gravel soil cushion layer 11 is constructed to the design elevation; at the same time, bury the first resistance wire layer 7 in the gravel soil cushion layer 11 on the top of the heat insulation layer 13, so that the power connection end of the first resistance wire layer 7 extends outside the design top surface of the runway structure.

[0037] Step 4: Construct the water-stabilized macadam layer 10, and meanwhile embed the temperature sensor 12 in the gravel soil cushion layer 11.

[0038] Step 5: Lay the second resistance wire layer 9 at a position close to the top surface within the water-stabilized macadam layer 10, and extend the power connection end of the second resistance wire layer 9 outside the designed top surface of the runway structure.

[0039] Step 6: Construct the concrete pavement layer 8.

[0040] Step 7: Install the lead-acid battery 3, and connect both the second resistance wire layer 9 and the first resistance wire layer 7 to the lead-acid battery 3.

[0041] Step 8: Construct the solar panel 1, the laser snow depth sensor 2, the data collector 5, the temperature controller 4 and the signal wireless transmitter 6.

[0042] In this embodiment, a cross slope is provided at the top of the concrete pavement layer 8, and the elevation at the longitudinal axis of the concrete pavement layer 8 is higher than the elevations at both side edges of the concrete pavement layer 8; the slope of the cross slope on the top surface of the concrete pavement layer 8 is 1% - 3%.

[0043] In this embodiment, the data collector 5 in the system is connected to the temperature sensor 12 and the laser snow depth sensor 2 to collect temperature and snow depth data in real time. The data collector 5 has multi-channel data processing capabilities and can receive and process data inputs from multiple sensors simultaneously to ensure the real-time response of the system.

Claims

1. A solar-based system for melting snow on airport runways and preventing frost heave in cold regions, characterized in that: The invention comprises a runway structure, a solar power generation system, an anti-freezing system, a monitoring system and a signal wireless transmitter; the runway structure comprises a gravel soil cushion layer (11), a water-stable crushed stone layer (10) and a concrete pavement layer (8) arranged in order from bottom to top; the anti-freezing system is arranged in the runway structure, and comprises a first resistance wire layer (7) and a second resistance wire layer (9); the first resistance wire layer (7) is arranged on the top of the gravel soil cushion layer (11); the second resistance wire layer (9) is buried on the top of the water-stable crushed stone layer (10); the outer surfaces of the first resistance wire layer (7) and the second resistance wire layer (9) are both wrapped with an insulating protective layer; at the bottom of the first resistance wire layer (7) and the runway structure The sides of the structure are respectively provided with heat insulation layers (13), and the upper ends of the heat insulation layers (13) extend into the concrete pavement layer (8); the solar power generation system is arranged on both sides of the runway structure, and comprises solar panels (1) and lead-acid batteries (3); the solar panels (1) are arranged in a group and arranged at intervals along the longitudinal direction of the runway structure; the lead-acid batteries (3) are electrically connected to a group of solar panels (1) to store the electric energy of the solar panels (1), and the lead-acid batteries (3) are electrically connected to the first resistance wire layer (7) and the second resistance wire layer (9) respectively; the monitoring system comprises a laser snow depth sensor (2), a temperature sensor group, a data acquisition instrument (5) and a temperature controller (4 There are three groups of temperature sensor groups, which are arranged at intervals along the longitudinal direction of the runway structure on both sides and at the longitudinal axis of the runway structure; each temperature sensor group includes a plurality of temperature sensors (12), and the plurality of temperature sensors (12) are arranged at intervals along the vertical direction in the gravel soil cushion layer (11) and the water-stabilized crushed stone layer (10); the temperature sensor (12) is connected to the data acquisition instrument (5) by telecommunication, and the temperature sensor (12) transmits the temperature data monitored in real time to the data acquisition instrument (5); the data acquisition instrument (5) is connected to the temperature controller (4) by telecommunication; the temperature controller (4) is connected to the first resistance wire layer (7), the second resistance wire layer (9), the temperature sensor (12) and a lead-acid battery (3), respectively, and the temperature controller (4) adjusts the current flowing through the first resistance wire layer (7) and the second resistance wire layer (9) by receiving data from the temperature sensor (12); the laser snow depth sensor (2) is installed near the runway structure to measure the depth of snow on the surface of the concrete pavement layer (8); the laser snow depth sensor (2) is connected to the data acquisition instrument (5) by telecommunication to transmit the collected signal to the data acquisition instrument (5); the data acquisition instrument (5) and the temperature controller (4) are connected to a remote control center by telecommunication; the signal wireless transmitter is installed on both sides of the runway structure to transmit the data in the monitoring system to the remote control center.

2. The solar-based cold-region airport runway snow melting and roadbed anti-freezing system according to claim 1 is characterized by: Also included is a wind power generation system; the wind power generation system comprises a wind generator (14), a rectifier (15) and a wind power generation controller (16); the wind generator (14) is arranged on both sides of the runway structure and is used to capture the airflow of aircraft takeoff and landing or natural wind energy; the wind generator (14) converts alternating current into direct current through the rectifier (15) and is connected to the lead-acid battery (3) through the wind power generation controller (16).

3. The solar-based cold-region airport runway snow melting and roadbed anti-freezing system according to claim 1 is characterized by: The top of the concrete pavement layer (8) is provided with a transverse slope, and the gradient of the transverse slope is 1% to 3%.

4. The solar-based cold-region airport runway snow melting and roadbed anti-freezing system according to claim 1 is characterized in that: The spacing between vertically adjacent temperature sensors (12) is no greater than 30 cm, and the spacing between longitudinally adjacent temperature sensor groups is no greater than 5 m.

5. The solar-based cold-region airport runway snow melting and roadbed anti-freezing system according to claim 1 is characterized by: The laser snow depth sensor (2) is installed above the runway structure or obliquely above both sides of the runway structure.

6. The solar-based cold-region airport runway snow melting and roadbed anti-freezing system according to claim 1 is characterized by: The remote monitoring system also includes a fault alarm device; the fault alarm device is connected to the remote control center by telecommunication; if the temperature of the temperature sensor (12) exceeds a preset range, the fault alarm device automatically alarms and records the fault information, so as to facilitate timely maintenance by maintenance personnel.

7. The solar-based cold-region airport runway snow melting and roadbed anti-freezing system according to claim 1 is characterized by: A power-off protection device and an over-temperature protection device are provided on the circuit between the lead-acid storage battery (3) and the first resistance wire layer (7) and the second resistance wire layer (9).

8. A construction method for a solar-based cold-region airport runway snow melting and roadbed anti-freezing system as claimed in any one of claims 1 to 7, characterized in that: The steps include: Step 1: constructing a gravel-soil cushion layer (11), and burying a temperature sensor (12) in the gravel-soil cushion layer (11); Step 2: laying a heat insulation layer (13) in the gravel and soil cushion layer (11) near the top surface, so that the edges of the heat insulation layer (13) extend beyond the gravel and soil cushion layer (11); Step three, continue to construct the gravel soil cushion layer (11) on the top of the insulation layer (13) until the gravel soil cushion layer (11) is constructed to the designed elevation; at the same time, bury the first resistance wire layer (7) in the gravel soil cushion layer (11) on the top of the insulation layer (13), so that the power connection end of the first resistance wire layer (7) extends to the outside of the designed top surface of the runway structure; Step 4: constructing a water-stable crushed stone layer (10) and burying a temperature sensor (12) in the sand and gravel soil cushion layer (11); Step 5: laying a second resistance wire layer (9) in the water-stable crushed stone layer (10) near the top surface, so that the power connection end of the second resistance wire layer (9) extends outside the designed top surface of the runway structure; Step 6: constructing a concrete pavement layer (8); Step seven, installing the lead-acid battery (3), and connecting the second resistance wire layer (9) and the first resistance wire layer (7) to the lead-acid battery (3); Step eight, constructing the solar panel (1), the laser snow depth sensor (2), the data acquisition device (5), the temperature controller (4) and the signal wireless transmitter (6).

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