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Thermosyphon-induced hydro-thermal-mechanical response in permafrost embankment through three-dimensional numerical modelingстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 апреля 2026 г.
- Авторы: Suiqiao Yang, Hu Zhang, Cheng Wen, Jintao Hu, Lijun Xing, Lihan Shi, Ze Zhang, Shengrong Zhang, Andrei Zhang, Mikhail Zhelezniak, Huijun Jin
- Журнал: Applied Thermal Engineering
- Том: 294
- Год издания: 2026
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Номер статьи: 130554
- DOI: 10.1016/j.applthermaleng.2026.130554
- Аннотация: Two-phase closed thermosyphons (TPCTs) are widely employed in permafrost engineering to control ground temperature and mitigate thaw-induced settlement. However, most studies have focused primarily on temperature fields, often overlooking the coupled evolution of temperature, moisture migration, and deformation. This study develops a three-dimensional coupled water-thermal-mechanical model to capture TPCT-induced horizontal thermal gradients, moisture redistribution, and long-term settlement in warm permafrost embankments. The model is further applied to evaluate embankment responses under varying mean annual ground temperatures (MAGT) and future warming scenarios. The results demonstrate that TPCTs provide effective and sustained cooling for permafrost embankments, significantly lowering ground temperatures and suppressing talik development, particularly in warm permafrost (MAGT = −0.5 °C). Consequently, long-term settlement is reduced by up to 50%, and the dominant deformation mechanism shifts from thaw consolidation to low-temperature creep. However, TPCTs also induce pronounced horizontal thermal gradients and moisture redistribution, creating cold and ice-rich zones around the evaporator while depleting moisture in adjacent areas. This thermal-hydraulic non-uniformity may lead to differential settlement, even as overall thermal stability improves. TPCT performance is highly sensitive to MAGT, with the strongest effects in warm permafrost and primarily stability-maintaining in medium and cold permafrost. Under future warming scenarios (SSP1–1.9 to SSP5–8.5), the cooling effect of TPCTs is significantly reduced due to shorter operational durations and a contracted cooling extent, leading to increased long-term settlement. This study offers new insights into TPCT-induced hydro-thermal dynamics and their impact on differential settlement, and highlights the need to balance cooling efficiency with overall hydro-thermal nonuniformity in engineering design.
- Добавил в систему: Чжан Андрей Антонович