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A platform for research: civil engineering, architecture and urbanism
Effect of Thermokarst Lake on Foundation Under Embankment in Permafrost Regions
Abstract 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.
Effect of Thermokarst Lake on Foundation Under Embankment in Permafrost Regions
Abstract 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.
Effect of Thermokarst Lake on Foundation Under Embankment in Permafrost Regions
Hu, Xiaoying (author) / Sheng, Yu (author) / Peng, Erxing (author)
2018-01-01
4 pages
Article/Chapter (Book)
Electronic Resource
English
Embankment Stability of the Qinghai—Tibet Railway in Permafrost Regions
| British Library Online Contents | 2018