Effect of thermokarst lake on foundation under embankment in permafrost regions

doi:10.1007/978-3-319-97115-5_101

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	Effect of thermokarst lake on foundation under embankment in permafrost regions
	Hu, Xiaoying 1,2; Sheng, Yu 2; Peng, Erxing 2
	2018
会议日期	August 13, 2016 - August 16, 2016
会议地点	Vienna, Austria
关键词	Embankments Geotechnical engineering Permafrost Thermal effects Cold season Embankment in permafrost region Ground temperature Safety and stabilities Thermal impacts Thermal regimes Thermokarst lakes Warm seasons
期号	216849
DOI	10.1007/978-3-319-97115-5_101
页码	1364-1367
英文摘要	Thermokarst lakes can change the thermal regimes of foundation under the embankment and cause failures of embankment in permafrost regions. This paper analyzes the thermal impact of thermokarst lake on the permafrost based on the monitoring data. The results indicate that: (1) The thermokarst lake extend the time of warm season and shorten the time of cold season for permafrost; (2) The average ground temperature of permafrost is increased by the effect of thermokarst lake. The increment of temperature became larger with the decrease of distance from the thermokarst lake; (3) The thermokarst lake can inhibition the heat dissipation of permafrost in the cold season to make a thermal impact on the permafrost. Therefore, the embankment always absorbs heat from thermokarst lake, asymmetry thermal regimes of permafrost under the embankment is enhanced, which induces differential settlements and harms the safety and stability of embankment. © Springer Nature Switzerland AG 2018.
会议录	Springer Series in Geomechanics and Geoengineering
会议录出版者	Springer Verlag
语种	英语
ISSN号	18668755
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/118136]
专题	兰州理工大学
作者单位	1.Lanzhou University of Technology, Lanzhou; Gansu; 730000, China; 2.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; Gansu; 730000, China
推荐引用方式 GB/T 7714	Hu, Xiaoying,Sheng, Yu,Peng, Erxing. Effect of thermokarst lake on foundation under embankment in permafrost regions[C]. 见:. Vienna, Austria. August 13, 2016 - August 16, 2016.