Auxiliary tunnel lighting technology based on the light reflection and energy storage concept

Abstract

Based on the analysis of domestic and foreign lighting quality standards and evaluation methods, an investigation of the existing illumination sources, interior decoration materials, and illumination situations of mountain tunnels in southwest China was carried out. This paper presents a series of tests based on the light reflection and storage concept, such as the indoor simulation test, the physical model test, and the field test, to explore the energy-saving illumination law. The results show that: (1) the tunnel pavement illumination can be improved by using reflective and light-storing materials on the sidewall: its luminance can increase by at least 10% with the wall reflectivity reaching up to 70%; (2) the illumination load can be reduced by a light reflection function based on the equivalent illumination theory. By introducing the visual effect concept, the traffic safety in a tunnel can be evaluated, providing a basis for improving the lighting evaluation method; (3) the matching of reflective materials and commonly-used lighting sources is studied, and the performance of reflective materials used in tunnels is evaluated, which provides a basis for further promoting reflective and light-storing materials in tunnel. Language: zh