Application Research On Energy Saving And Safety Technology Of Highway Tunnel Based On Antifouling Lighting Material

The highway tunnel,as an indispensable part of modern highway network,plays an important role in our country’s economic development.With the increase of the scale and number of highway tunnels,the energy consumption caused by tunnel lighting is huge.At the same time,as a special structure,highway tunnel is easy to cause serious safety problems due to insufficient brightness.So it is very important to ensure safety and reduce energy consumption in highway tunnel operation.As a kind of hydrophobic material,the stain-resistant lighting material can give full play to its stain-resistant and self-cleaning properties when used on the tunnel side wall.In addition,the transparent property can be combined with the high reflectivity material to improve the overall brightness and reduce the power of the luminaires.In this thesis,the anti-fouling lighting material as the research object,study whether its performance meets the tunnel environmental requirements,and then take the contact Angle and reflectivity as indicators to further study the anti-fouling performance and self-cleaning;On the basis of excellent anti-fouling effect,the tunnel environment is simulated to study the safety improvement effect under different color temperature and brightness.Finally,combined with the actual project,verify the energysaving safety effect.The main research contents and conclusions of this thesis are as follows:(1)According to the requirements of tunnel side wall materials and related standards,a series of experiments were carried out to evaluate the water resistance,acid and alkali resistance,high temperature stability and ultraviolet aging resistance of the stain resistant lighting materials.The experimental results show that the properties of the material meet the necessary requirements.There is no significant difference between brush and spray methods.Spraying method is suitable for larger surfaces,while brushing is more suitable for smaller surfaces.In addition,the material exhibits excellent self-cleaning properties,which reduces the amount of water needed to clean the sidewalls and saves energy.(2)Adding modified nano silica to waterborne coatings can improve the stain resistance of the coatings.The optimal ratio is 3wt% modifier content and 5wt% additive content,which can improve the stain resistance of the coatings by about 28%.The antifouling properties of waterborne acrylic coatings,anion nano silicon coatings,optimum modified coatings and antifouling lighting materials were compared and analyzed.Among them,anti-fouling lighting material in dust performance is the best,its reflectivity reduction coefficient is not more than 10%,far better than the other three coatings.In terms of oil resistance,the reflectance reduction coefficient of four kinds of coatings is not more than 10%,indicating that their oil resistance effect is very good.Comprehensive analysis shows that the anti-fouling lighting material has the best antifouling performance.Compared with the other three materials,the anti-fouling effect can be improved by up to 70%.Therefore,the application of the material in the tunnel side wall can not only maintain the durability of the brightness,improve the brightness of the road surface,but also reduce the frequency of cleaning and save energy.(3)Through the simulation of tunnel light environment,the visual distance under different color temperature and brightness is explored,so as to provide a basis for selecting a reasonable tunnel lighting environment.The results show that the visual distance is affected by both color temperature and brightness,and the variation law of visual distance is different under different color temperature and brightness.When the color temperature is 3000 K,its apparent distance is the lowest,indicating that 3000 K is not suitable for use in the tunnel.When the brightness is low,4000 K is selected,the visual distance is better,and when the brightness is high,5400 K is the best effect.Under the condition of bright vision,the increase of brightness is too small and the effect is not obvious.When the increment is greater than 6 cd/㎡,the distance will be greatly improved;Excessive local brightness will produce glare and reduce safety.(4)Taking small gray objects as the control group,the visual distance rules of small objects with different colors were explored under brightness and color temperature.The results show that the regularities of blue,red,green and yellow targets are similar to those of gray targets.Red and green have a longer visual distance than other colors,which means they’re easier to spot.Therefore,they can be used on the side wall of the tunnel to enhance the guidance,warning and safety evacuation guidance in case of emergency.Under the optimal brightness and color temperature,each color increases the driver’s reaction time differently,red is 1.5s,green is 1.1s,yellow is 1.1s,and blue is 0.83 s.(5)The anti-fouling lighting material is applied to the side wall of Feng Sheng Tunnel,and its lighting effect,anti-fouling effect,energy saving safety and economic benefits are studied.The results show that using this material can improve the brightness of the road surface as well as the overall brightness of the tunnel.Among them,the road brightness in the middle section increased by 26.8%,which greatly improved the driving safety.At the same time,the material also has good anti-fouling and self-cleaning properties,making the cleaning and maintenance efficiency of the tunnel side wall increased by about 60%,and the water consumption was saved by about 1/4.In terms of economic benefits,the application of this material in long tunnels can save about 100,000 yuan a year.