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为研究保温板在高原寒区铁路路基边坡防护工程中的应用效果,在青藏铁路北麓河试验段进行了观测研究。试验工程采用泡沫玻璃板和草皮铺设路堑边坡,研究结果表明:泡沫玻璃板护坡在保温及延缓多年冻土退化方面均优于草皮护坡,利用其低的热导性(热阻)阻止上部热量进入下部土层,从而起到保护多年冻土的作用。
In order to study the application effect of thermal insulation board in slope protection engineering of railway embankment in cold region of plateau, the observation and research was conducted in Beiluhe experimental section of Qinghai-Tibet Railway. Experimental results show that foam glass slab and grass sod laid cutting slope. The results show that foam glass slab slope protection is better than turf slope protection in the aspects of thermal insulation and delaying the permafrost degradation, and the use of low thermal conductivity (thermal resistance) to prevent the upper heat Into the lower soil, thus protecting the role of permafrost.