Thermal effect of the accumulated water with different depths on permafrost subgrade in cold regions
作者机构：State Key Laboratory of Frozen Soil EngineeringNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China School of Civil EngineeringLanzhou University of TechnologyLanzhou 730050China Beiluhe Observation and Research Station on Frozen Soil Engineering and Environment in Qinghai‒Tibet PlateauState Key Laboratory of Frozen Soil EngineeringNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China
出 版 物：《Advances in Climate Change Research》 (气候变化研究进展（英文版）)
年 卷 期：2023年第14卷第2期
页 面：179-189页
核心收录：
学科分类：07[理学] 0705[理学-地理学] 070501[理学-自然地理学]
基 金：the National Natural Science Foundation of China(41901079) Open Fund of State Key Laboratory of Frozen Soil Engineering(SKLFSE202120) the Independent Research Project of State Key Laboratory of Frozen Soil Engineering(SKLFSE-ZT-202209) Hongliu Excellent Youth Project of Lanzhou University of Technology(062006)
主 题：Accumulated water Water depth Permafrost Embankment Thermal effect
摘 要：In cold regions,the thermal effect of accumulated water on underlying permafrost and permafrost subgrade remains a significant hazard causing engineering *** depth of accumulated water may be an important influence factor of permafrost thermal stability,but there is lack of qualitative and quantitative research about *** this study,equivalent thermal conductivity theory and solid heat transfer theory have been used to establish the calculation model for simulating heat transfer in water and ***,the accuracy and reliability of the calculation model are checked by monitored data and subsequently used to analyze the thermal erosion of water on underlying permafrost and permafrost under the *** simulation results show that shallow water can protect permafrost and deeper water disrupts the thermal stability of underlying *** thermal effect extent of water is primarily determined by its depth,and the concept of critical depth and stable depth of accumulated water has been ***,the temperature field of permafrost under embankment can be changed by the slope toe *** addition,the thermal effect range of the slope toe water is limited by the thermal influence radius,which increases with the depth of standing *** findings provide support as well as a fundamental base for environmental issues arising from the accumulated *** observations will,thus,also be valuable to further engineering environment studies in cold regions.
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