首页|Strengthening effect of crushed rock revetment and thermosyphons in a traditional embankment in permafrost regions under warming climate

Strengthening effect of crushed rock revetment and thermosyphons in a traditional embankment in permafrost regions under warming climate

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  • 国家科技期刊平台
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The embankment of the Qinghai-Tibet Railway(QTR)has been experiencing severe problems due to permafrost degradation,especially in warm and ice-rich permafrost regions.Based on ground temperature and deformation data of the embankment at location K1497+150 of the QTR in 2006-2018,the thermal regime and deformation process were analysed.The results showed that 1)the degradation rate of permafrost under the embankment was faster than that under the natural site without engineering construction,and 2)the deformation rate of the embankment had exceeded the safety range for the QTR embankment before adopting mitigative measures.In addition,this study evaluated the cooling effect on the underlying permafrost and working mechanism of two strengthening measures.Two measures,crushed rock revetment(CRR)and thermosyphons,were adopted to protect the underlying permafrost from continual degradation.The individual cooling effect of the CRR was not as good as that of the thermosyphons.However,the combination of the two could enhance the protective effects of each on the underlying permafrost,effectively cooling the permafrost and improving the stability of the embankment.

Climate warmingPermafrostCrushed rock revetment(CRR)ThermosyphonsSettlement

MEI Qi-Hang、CHEN Ji、WANG Jin-Chang、HOU Xin、ZHAO Jing-Yi、ZHANG Shou-Hong、DANG Hai-Ming、GAO Jia-Wei

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Beiluhe Observation and Research Station of Frozen Soil Engineering and Environment,State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environmental and Resources,Chinese Academy of Sciences,Lanzhou,730000,China

University of Chinese Academy of Sciences,Beijing,100049,China

China Railway Qinghai-Tibet Group Co.Ltd,Xining,810007,China

##This study was supported by the Strategic Priority Research Program of the Chinese Academy of ScienceScience and Technology Project of State Grid Corporation of ChinaNatural Science Foundation of Chinaand the State Key Laboratory of Frozen Soils Engineering Foundation

XDA20020102SGQHDKYOSBJS20160007741101065SKLFSE-ZT-34

2021

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

CSCDSCI
影响因子：0.806
ISSN：1674-9278
年,卷(期)：2021.12(1)
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