公路隧道基本段照明亮度对隧道能见度的影响研究

Effect of Highway Tunnel Lighting on the Tunnel Visibility

对能见度公式进行研究并用Matlab软件编写隧道内对比度传输系数程序,探讨隧道内照明亮度对隧道能见度的影响。说明隧道内能见度情况与隧道纵向的前后亮度对比有关;无论隧道内污染物浓度场是何种形式,要使隧道能见度良好,都需使得隧道内亮度从入口至出口逐渐增大,亮度增大的速率越大,能见度越好。并对传统隧道照明曲线进行改进。

Through further researehing on the calculation formula of visibility and eontrast transfer coefficient based on Matlab software, the paper discussed the effect of road tunnel lighting luminance on visibility. There was a relationship between visibility and the contrast of luminance in the front of the tunnel and that at the rear of the tunnel. No matter how the smoke concentration field was, the visibility improved if the tunnel luminance gradually enhanced from the entrance to the exit. The greater the increasing rate, the better the visibility. This paper improves the traditional tunnel lighting curve.