Study on the coupling thermal effect of thermokarst lake and high sunny slope on permafrost embankment

Zhi-yun, Liu; Wang, Shiwan; Jiang, Zeyu; Dong, Yuanhong; Chen, Jianbing; Cui, F.Q.

doi:10.1016/j.trgeo.2023.101024

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…The numerical calculations were performed using the ANSYS Fluent 15.0 software package. The physical properties of the air region were chosen as the air at 0 • C. The density of the permafrost layer was set to a constant value, and its specific heat capacity and thermal conductivity were taken as a temperature-dependent function of the segmental step type [35,36]. To reflect the impact of periodic changes in the external environment on coupled heat transfer of underlying permafrost, environmental temperature, wind speed, solar radiation, evaporation, etc., were all set as annual periodic change functions over time.…”

Section: Prediction Methods For Gmat and Alt Under Climate Warmingmentioning

confidence: 99%

Prediction of Permafrost Subgrade Thawing Settlement in the Qinghai–Tibet Engineering Corridor under Climate Warming

Liu,

Chen

et al. 2024

Atmosphere

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As a result of global warming, the thawing settlement disasters of permafrost in the Qinghai–Tibet Engineering Corridor (QTEC) have intensified, which has serious effects on the safe operation of permafrost highway engineering. In this work, a prediction model for the thawing depth of permafrost subgrade in the QTEC under the climate warming scenario was established. Based on the survey results of permafrost ice content along the QTEC and the classification of thawing settlement risks, the zoning characteristics of thawing settlement of permafrost subgrade in the QTEC were obtained and analyzed. The results showed that the thawing depth of permafrost underlying the 26 m width subgrade in the QTEC will mainly remain below 9 m, and the area with a thawing depth of 6~9 m will have the widest spread within the next 20 years. The thawing settlement will be between 0.02 m and 5.45 m, with an average value of about 0.93 m after 20 years. Furthermore, after 50 years, the thawing depth of permafrost underlying the 26 m width subgrade will almost always be greater than 9 m, and the average thawing settlement will be about 1.12 m. Within the next 20 to 50 years, the risk of permafrost subgrade thawing settlement in the QTEC will be the most significant risk type, and this effect will mainly be distributed in the Kunlun Mountains, Chumar River Plain, Kekexili Mountains, Beiluhe Basin, Tanggula Mountains and intermountain Basins.

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Section: Prediction Methods For Gmat and Alt Under Climate Warmingmentioning

confidence: 99%

Prediction of Permafrost Subgrade Thawing Settlement in the Qinghai–Tibet Engineering Corridor under Climate Warming

Liu,

Chen

et al. 2024

Atmosphere

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Thermal and hydrological processes in permafrost slope wetlands affect thermosyphon embankment stability

Tai,

Wu,

2024

Advances in Climate Change Research

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Study on the lateral thermal disturbances of three parallel embankments on permafrost along the Gonghe-Yushu Engineering Corridor in China

Hu,

Jin,

Niu

et al. 2024

Transportation Geotechnics

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Study on the coupling thermal effect of thermokarst lake and high sunny slope on permafrost embankment

Cited by 5 publications

References 24 publications

Prediction of Permafrost Subgrade Thawing Settlement in the Qinghai–Tibet Engineering Corridor under Climate Warming

Prediction of Permafrost Subgrade Thawing Settlement in the Qinghai–Tibet Engineering Corridor under Climate Warming

Thermal and hydrological processes in permafrost slope wetlands affect thermosyphon embankment stability

Study on the lateral thermal disturbances of three parallel embankments on permafrost along the Gonghe-Yushu Engineering Corridor in China

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