1. technical name

Ice and snow pavement monitoring and early warning and active anti-ice and anti-skid complete technology

2. technology type

Full life cycle resource conservation and recycling technology

3. scope of application

Transportation is suitable for road facilities affected by ice and snow

4. Brief description of technology

This technology comprehensively applies road surface ice and snow status monitoring technology and road surface active anti-icing and snow technology to effectively ensure the operation of winter transportation infrastructure. The results are stable and can effectively ensure the efficient, safe and scientific operation of winter highway facilities, avoid traffic accidents, and reduce The number of ice removal and maintenance operations reduces carbon emissions and environmental pollution, and has significant social, economic and environmental benefits. The key equipment of this technology mainly includes the following three items: road surface precipitation status monitoring and early warning equipment; tire-ice-road three-phase system road meter driving safety system evaluation equipment; active anti-icing and snow melting complete equipment and material production line.

5. technical information

The working voltage of monitoring and early warning equipment is 12V/22V and the power is 50W/set; the working voltage of active anti-icing and snow melting equipment is 220V, and the power is determined according to the snowmelt area.

6. Commercial applications

This technical achievement is widely used in more than 80 highway projects in 19 provinces and cities across the country, such as Beijing East Olympic Stadium Road, Capital New Airport Expressway, Capital Daxing Airport and other projects, with a cumulative application mileage of more than 3000 kilometers. In addition, the technical achievements have also been initially applied to the construction of national projects along the "Belt and Road" such as the M5 Highway of Belarus and the Karakoram Highway of the China-Pakistan Economic Corridor, and good application results have been achieved.

7. Help/support you hope to receive during the technology transfer process

no

8. equipment investment

The ice and snow pavement monitoring and early warning system is suitable for new/active asphalt pavement projects. Monitoring equipment is arranged according to specific conditions. 1 set per kilometer is arranged in areas prone to icing, and 1 set per kilometer is arranged in other areas. The price of each set of equipment is 60,000 yuan, and 25 sets of monitoring equipment are expected to be deployed every 100 kilometers, requiring a total investment of about 1.5 million yuan. The slow-release low-freezing-point anti-icing snow material is suitable for new construction/maintenance asphalt pavement projects. The amount used in the project is about 200 tons per kilometer, and the price is 6000 yuan/ton. The total increased cost investment per kilometer is about 1.2 million yuan. There is no need to add/modify equipment and no additional equipment investment when using it. Phase change microcapsule materials are suitable for new cement road projects. The application in projects requires 20kg/m3, and the price is 120 yuan/kg. The increased cost per square meter of concrete is about 3500 yuan. There is no need to add/transform equipment when using the materials, and there is no additional equipment investment. Energy conversion pavement snow-melting equipment is suitable for new cement pavement projects, including pipes, joints, heat pump units, circulation pumps and corresponding construction costs. When the equipment snow-melting range is 600 square meters, the cost of each set of equipment is about 1.25 million yuan.

9. Annual operation and maintenance fee

The operating cost of ice and snow pavement monitoring and early warning technology is 8,760 yuan/year, and the maintenance and management cost is 200,000 yuan/year·100 kilometers; the slow-release low-freezing point anti-icing snow technology has no energy consumption and no maintenance management; the phase change microcapsule anti-icing snow technology has no energy consumption and no maintenance management is required; the operating cost of the energy conversion pavement snow-melting technology is 24,200 yuan/year, and the maintenance and management cost is 100,000 yuan/set.

10. investment recovery period

Taking every 100 kilometers of highways per year as the calculation target, the initial investment in the ice and snow road monitoring and early warning system is 1.5 million yuan. The operation and maintenance expenses are 208,760 yuan. Economic losses caused by traffic accidents can be avoided by more than 2 million yuan. The payback period is 1 year. The initial investment of slow-release low-freezing-point anti-icing snow material is 1.2 million yuan/kilometer. Annual snow removal costs are saved by 300,000 yuan/kilometer, and maintenance costs are saved by 110,000 yuan/kilometer. The payback period is 3 years. The initial investment for energy-conversion pavement snow-melting equipment is 1.25 million yuan. The annual equipment operation and maintenance management expenses are 124,200 yuan. This equipment can eliminate the need for ice and snow removal operations on roads, and can reduce ice and snow removal costs and traffic delay losses by more than 700,000 yuan every year. The payback period is 2.6 years. The initial investment in phase change microcapsule materials is 3500 yuan/m2, and the annual ice and snow removal cost is about 1000 yuan/m2. The payback period is 3.5 years.

11. added benefit

Economic benefits: The application of ice and snow road surface condition monitoring and early warning technology shows that at least 60% of traffic accidents can be avoided every year on the applied road sections and direct and indirect economic losses can be reduced by more than 2 million yuan. The application of slow-release low-freezing point fillers and phase change microcapsules can effectively resist ice and snow and reduce the number and cost of ice and snow removal operations. After applying this technology, ice and snow removal operations can be reduced by more than 7 times per year, the annual ice and snow removal cost can be saved by 210,000 yuan/kilometer, and the annual maintenance cost can be saved by approximately 110,000 yuan/kilometer. The application of energy-conversion road snow-melting equipment can effectively melt ice and snow without the need for ice and snow removal operations. After applying this technology, ice and snow removal operations can be reduced by more than 15 times per year, and the annual ice and snow removal cost can be saved by 450,000 yuan/kilometer. Equipment operation requires 24,200 yuan/year, and comprehensive economic savings are 425,800 yuan/year·kilometers. Carbon benefits: Pavements using energy conversion pavement snow melting equipment only consume electricity, save 20.59tce/time in operation, and reduce CO2 emissions by 30019.94kg/time.

12. comprehensive benefits

The benefits of highway facilities applying this technology mainly include the following aspects: According to statistics, the applied monitoring and early warning technology avoids 60% of traffic accidents in winter, improves transportation capacity, and avoids direct and indirect economic losses of more than 2 million yuan every year; The applied anti-ice and snow technology reduces more than 20% of the maintenance times required due to freezing diseases, improves the durability of asphalt pavements, and reduces the inconvenience caused by maintenance operations to transportation; It effectively reduces the number of ice and snow removal operations on highway facilities and avoids the adverse impact of the use of snow melting agents on the ecological environment and transportation infrastructure. Existing roads using this technology reduce the use of more than 50,000 tons of snow melting agent every year, which can save snow removal costs by more than 1 billion yuan/year; increase the dynamic slip resistance coefficient of ice and snow roads, and improve the driving safety characteristics of ice and snow roads in winter. According to statistics, the average traffic accident rate dropped by 37.5%, the death rate dropped by 25.1%, and the injury rate dropped by 34.1%, effectively avoiding traffic accidents and potential loss of life and property; the use of asphalt pavement materials resistant to ice and snow has improved the road. Driving speed under ice and snow conditions improves transportation capacity, and reduces vehicle emissions of NOx, CO and other pollutants. Actual measurement of air quality shows that harmful gas emissions have been reduced by 72%, and suspended air particles have been reduced by 83%. Transportation efficiency has been improved, efficient transportation of people and materials has been ensured, normal travel and life of people in winter has been ensured, and transportation has been reduced. Costs have revitalized the regional economy.

13. Level of impact of obstacles on technology transfer

no

14. technology maturity

The developed road surface ice and snow status monitoring and early warning system has been stable in long-term service, with an accuracy of more than 4%, and stable data transmission. Active anti-ice and snow melting materials improve the performance of highways and can effectively melt ice and snow for a long time. A complete production process has been established, with a daily output of 160 tons. The energy conversion road snow-melting equipment has high technical feasibility. The application of this technology can achieve the effect of preventing snow and ice on the road. The system is safe, reliable and stable in operation. Technical achievements have been applied to more than 80 projects in 19 provinces across the country, such as Qitai Expressway, Heihe Bridge, Changchun South Third Ring Road, Beijing New Airport Expressway, and Beijing Daxing Airport, with a total of more than 3000 kilometers of roads paved. It has accurate driving safety warning and good ice and snow melting effect, and has a high degree of technical recognition.

15. technical applicability

This technology is suitable for all roads and only requires electricity to maintain the system running. The equipment only requires simple training, is simple to install, is convenient to use, and is easy to maintain.

16. technical stability

Ice and snow pavement monitoring and early warning technology maintains good stability during operation, and the technology is suitable for multiple pavement forms. It can monitor the ice and snow status of the road surface with a thickness of 0-4 mm. The ice and snow monitoring sensor can maintain good monitoring accuracy within the temperature range of-50℃-50℃. The monitoring is not interfered by the vibration load of the vehicle, and the monitoring accuracy is higher than 4%., can meet the needs of road service, data transmission is stable for a long time, the frequency of fluctuation values is less than 1‰, the failure rate is extremely low, and the early warning information is accurate. The slow-release low-freezing point material exists inside the asphalt mixture. The temperature range of road facilities and vehicle load will not cause damage to the low-freezing point material. The ability to coagulate and ice snow can be basically maintained before the upper surface of the road fails in service. The material is also hydrophobic, which keeps itself from being lost with precipitation and improves the water damage resistance of the asphalt pavement. Phase change microcapsule materials exist in cement concrete and play a role in preventing ice and snow, and can basically maintain the ability to coagulate and ice snow before cement concrete pavement is damaged. The temperature range of road facilities and vehicle loads will not cause damage to low-freezing-point materials. Microcapsules are hydrophobic and are not easy to combine with water and lose. The material also improves the durability of cement concrete materials to a certain extent. The energy conversion pavement snowmelt technology is suitable for a variety of pavements. The heat flow is led from the underground to the ground through pipes. The pipes have high temperature durability and low temperature crack resistance, and basically will not rupture under load. No external artificial energy, low equipment failure rate, high safety and stable performance.

17. technical safety

The normal working state of this technology application only requires a very small amount of power for the control system and transmission system. In addition, it does not require any external energy and is not limited by region and resources. The system operates safely and stably. The system itself will not cause safety accidents and will not affect driving safety. It can effectively reduce the occurrence of traffic accidents. It has no pollution to the ecological environment, is non-toxic and harmless. The technical system has high integration, complete integrity, and high market acceptance.

18. Barriers to technology transfer and promotion

no

19. intellectual property transfer

It has domestic independent intellectual property rights and has obtained 5 invention patents and 4 software copyrights. Some patents are efficient and jointly owned by enterprises. The technical achievements are all fully domestically produced.