Laboratory investigation on the control effect of a slope buried thermosyphon embankment in cold regions

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-09-27 DOI:10.1016/j.coldregions.2025.104702

Wansheng Pei , Junhua Zhou , Jianguo Lu , Shuai Du , Yanqiao Zhou

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引用次数: 0

Abstract

The snow or sand accumulated at embankment slope can change local thermal effect and cause uneven deformation in cold regions. How to solve the local thermal effect at slope is a critical issue for long-term embankment stability. In this study, a completely buried L-shaped two-phase closed thermosyphon (BLTPCT) embankment was designed to regulate the local thermal effect. A series of embankment model experiments, including the embankment with BLTPCTs and the control embankment without BLTPCT, were conducted to assess the thermal control performance of BLTPCTs embankment. The findings indicate that the BLTPCT is capable of partially cooling the embankment slope surrounding the evaporator segment of the BLTPCT during its operation, with a particularly pronounced cooling effect observed in the soil located near the lower central region of the evaporator. The maximum temperature reduction can reach 2.94 °C under this experimental condition. Meanwhile, the heat release by the condenser of the BLTPCT also causes the local pavement temperature to be higher than that of control embankment, with the maximum temperature increase reaching 24 %. The research could supply potential guidance for the local thermal effect issue at embankment slope in cold regions.

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寒区埋地热虹吸坡面路基控制效果的室内研究

在寒冷地区，路堤坡面堆积的雪或沙会改变局部热效应，造成不均匀变形。如何解决边坡的局部热效应是堤防长期稳定的关键问题。本研究设计了一种完全埋置的l型两相封闭热虹吸（BLTPCT）路堤来调节局部热效应。通过加BLTPCT路堤和不加BLTPCT路堤的路堤模型试验，对BLTPCT路堤的热控制性能进行了评价。研究结果表明，BLTPCT在运行过程中能够部分冷却其蒸发器段周围的路堤边坡，其中蒸发器中下区域附近的土壤冷却效果特别明显。在此实验条件下，最大温度降低可达2.94℃。同时，BLTPCT凝汽器的放热也导致路面局部温度高于对照路堤，最高温度升高24%。研究结果可为解决寒冷地区路堤边坡局部热效应问题提供潜在的指导。

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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.