长江科学院院报2019，Vol.36Issue(2)：111-115,121,6.DOI:10.11988/ckyyb.20170844
碎石层反射率模型及其运用研究
Reflectivity of Crushed Rock Layer: Model and Its Application
摘要
Abstract
The sunny and shady slope effect exerts significant impact on the construction quality and operation and maintenance of road engineering in cold regions. Coating the embankment surface with materials of light color or high reflectivity will improve the anti-radiation ability of subgrade slope, intensify the cooling effect of crushed rock layer, and remarkably reduce the received net radiation. An energy absorption model for crushed rock rough surface is established to deduce the relationship between the macro-reflectivity R and the micro-reflectivity r on the surface of rough crushed rock. In association with image processing, the reflectivity of crushed rock layer is estimated by obtaining the area of crushed rock and cavities. Furthermore, the reliability of the established model is verified by measured data. Analysis on model parameters reveals that reducing the roughness of rock surface and the ground clearance degree are conducive to improving the reflectivity of the whole crushed rock layer. Roughness of crushed rock severely inhibits the improvement of macro-reflectivity R. In addition, the selection of coating material should be depended on the roughness, and we recommend the reflectivity of coating between 0.4-0.6.关键词
碎石层/阴阳坡效应/多重反射/反射率/粗糙度/图像处理/多年冻土Key words
crushed rock layer/sunny and shady slope effect/multiple reflectance/reflectivity/roughness/image processing/permafrost分类
建筑与水利引用本文复制引用
梁若婵,张信贵,谭康豪,李芳华..碎石层反射率模型及其运用研究[J].长江科学院院报,2019,36(2):111-115,121,6.基金项目
贵州省土木工程一流学科建设项目(QYNYL〔2017〕0013) （QYNYL〔2017〕0013）
贵州省科学技术基金项目(黔科合J字〔2015〕2037号) （黔科合J字〔2015〕2037号）
