Thermal Performance of Embankment Within Crushed Rock Layer Along Qinghai-Tibet Railway

In order to study the heat transfer process and the cooling mechanism within a crushed rock layer that is suitable for engineering construction in permafrost regions, in-situ measurements were conducted within an experimental section of a crushed rock-based embankment and a crushed rock revetment embankment in Beiluhe, Qinghai-Tibetan Plateau. The results show that both the crushed rock-based embankment and the crushed rock revetment embankment primarily have a cooling effect and protect permafrost from warming and thawing beneath the embankment. A different heat transfer process occurred within a different structural layer of crushed rock.