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Evaluation of the long-term thermal stability of a crushed-rock revetment embankment in pan-Arctic permafrost regions under the effect of snow drift

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  • Yang, Sheng
  • Zhang, Mingyi
  • Bi, Jun
  • Pei, Wansheng
  • Li, Guanji
  • Li, Renwei

Abstract

In the pan-Arctic region, snow drift events usually result in heavy snow accumulations on both sides of road embankment which severely affects the energy exchange process at the embankment slopes and further changes the temperature distribution in the embankment and its subsoil. However, there is a lack of research on the prediction of snow distribution patterns around the embankment, which makes it difficult to accurately assess the impact of snowdrift on the thermal stability of the embankment in permafrost regions, and the embankment structure cannot be reasonably optimized accordingly. Herein, using the theories of two-phase flow and heat transfer, a numerical model is developed to evaluate the long-term thermal stability of embankments with different structures under the effect of snow drift. The results show that snow deposition occurs at the toe of the windward side slope and the whole leeward side of the embankment under the effect of snow drift. If the side slope of the embankment is reduced from 1:2 to 1:5 (vertical:horizontal), the snow accumulations on both sides of the embankment are significantly reduced, and the subsoil refreezes more effectively in cold season. When a crushed-rock revetment embankment (CRRE) with 1:5 side slopes is used, the soil beneath the embankment is sufficiently cooled, the warming of permafrost beneath both sides of the embankment caused by snow accumulation is eliminated, and the temperature distribution in the embankment and subsoil has a good symmetry in warm season. The crushed-rock revetment is thus proved to be an applicable and effective structure to ensure the long-term stability of the embankment in pan-Arctic permafrost regions.

Suggested Citation

  • Yang, Sheng & Zhang, Mingyi & Bi, Jun & Pei, Wansheng & Li, Guanji & Li, Renwei, 2023. "Evaluation of the long-term thermal stability of a crushed-rock revetment embankment in pan-Arctic permafrost regions under the effect of snow drift," Energy, Elsevier, vol. 263(PB).
    • Handle: RePEc:eee:energy:v:263:y:2023:i:pb:s0360544222025506
    DOI: 10.1016/j.energy.2022.125664
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    References listed on IDEAS

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    1. Zhang, Mingyi & Zhang, Xiyin & Li, Shuangyang & Wu, Daoyong & Pei, Wansheng & Lai, Yuanming, 2015. "Evaluating the cooling performance of crushed-rock interlayer embankments with unperforated and perforated ventilation ducts in permafrost regions," Energy, Elsevier, vol. 93(P1), pages 874-881.
    2. Lin Chen & Clifford I. Voss & Daniel Fortier & Jeffrey M. McKenzie, 2021. "Surface energy balance of sub‐Arctic roads with varying snow regimes and properties in permafrost regions," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 32(4), pages 681-701, October.
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    Cited by:

    1. Pei, Wansheng & Du, Shuai & Zhang, Mingyi & Zhou, Yanqiao & Ji, Yanjun, 2024. "Effect of evaporator curvature on the local non-equilibrium heat regulation in two-phase closed thermosyphon embankment in permafrost regions," Energy, Elsevier, vol. 301(C).
    2. Sun, Zhaohui & Liu, Jiankun & You, Tian & Ren, Zhifeng & Chang, Dan & Fang, Jianhong & Vladislav, Isaev, 2024. "Field test study on thermal performance of a novel embankment using solar refrigeration technology," Renewable Energy, Elsevier, vol. 226(C).

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