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- W4210451330 abstract "On the Qinghai-Tibet Plateau, transportation infrastructure has been greatly affected by permafrost degradation owing to the increasing air temperature caused by climate change. This study presents a risk assessment model for evaluating the viability of the crushed rock embankment under the scenario of climate warming. The results demonstrate that the service life of an embankment is determined by the time it spends at the lowest or low levels of failure risk. At the failure probability threshold of 0.1, the service lives of open crushed rock-based and U-shaped crushed rock embankments are longer than 100 years, those of closed crushed rock-based embankments are about 66 years, and those of crushed rock revetments are less than 40 years. In essence, the longer an embankment has been in service, the stronger its ability to resist climate warming. Based on these results, U-shaped crushed rock and crushed rock-based embankments are the most capable of offsetting the effects of climate warming on permafrost and should account for a higher proportion of independent embankment structures. The same cannot be said for crushed rock revetments, which should only be used as auxiliary engineering measures. Despite this recommendation, regular maintenance should be conducted on the open system crushed rock embankments because the high winds on the Qinghai-Tibet Plateau fill the embankments with sand, which has a negative effect on the long-term stability of the embankments." @default.
- W4210451330 created "2022-02-08" @default.
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- W4210451330 date "2022-04-01" @default.
- W4210451330 modified "2023-10-12" @default.
- W4210451330 title "Risk assessment of the crushed rock structure embankments of the Qinghai-Tibet Railway under a warming climate" @default.
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- W4210451330 doi "https://doi.org/10.1016/j.coldregions.2022.103509" @default.
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