Analytical model of vapor flow driven by pot cover effect in frozen soils

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-07-07 DOI:10.1016/j.coldregions.2025.104602

Xu Li , Qian Wang , Yangping Yao

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引用次数: 0

Abstract

The pot cover effect leads to the accumulation of soil vapor beneath the structural cover layers of roads or airport runways, where it undergoes a phase change to ice. This process can induce freeze-thaw degradation of the pavement or concrete, resulting in reduced strength and potential structural failure. The pot cover effect has been well studied in field and indoor experiments, but its soil vapor migration flow calculation model is still a challenge that urgently needs to be solved. To overcome this problem, a new concept of the soil vapor thermal diffusion coefficient is proposed, based on which a simplified soil vapor flow model is derived. Furthermore, the reliability of the model is validated by comparing its calculations with several indoor experimental datasets. The results show that the proposed model can be calculated using measurable macroscopic parameters and provides higher accuracy than traditional models. The findings provide a theoretical basis for studying and mitigating the pot cover effect in roadbeds and airport infrastructure in cold regions.

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冻土锅盖效应驱动蒸汽流动的解析模型

锅盖效应导致土壤蒸汽在道路或机场跑道的结构覆盖层下积累，在那里它经历了一个相变成冰。这个过程会引起路面或混凝土的冻融退化，导致强度降低和潜在的结构破坏。锅盖效应在田间和室内试验中已经得到了较好的研究，但其土壤蒸汽迁移流计算模型仍然是一个亟待解决的难题。为了克服这一问题，提出了土壤蒸汽热扩散系数的新概念，并在此基础上推导了简化的土壤蒸汽流动模型。通过与多个室内实验数据的比较，验证了模型的可靠性。结果表明，该模型可以使用可测量的宏观参数进行计算，并且比传统模型具有更高的精度。研究结果为研究和缓解寒区道路和机场基础设施的罐盖效应提供了理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.