Strengthening long-term embankments maintained on permafrost soils  

作　　者：Evgeny S.Ashpiz Tatyana S.Vavrinyuk 

机构地区：[1]Moscow State University of Railway Engineering of Emperor Nicholas II [2]The group of companies "MIAKOM"

出　　处：《Research in Cold and Arid Regions》2017年第3期317-320,共4页寒旱区科学（英文版）

摘　　要：An analysis of the reasons for the displacements of long-term embankments maintained on permafrost soils indicates that they mainly occur due to plastic deformations in the layer of seasonal freezing and thawing;therefore,the reconstruction of permafrost is not effective in this case.It is proposed to strengthen these embankments with the help of using jet technology for cementation of the top layer of the roadbed.This approach is considered through the example of the deforming embankment on 6,278 km of the Turinskaya-Karymskaya section of the Trans-Siberian Railway.An analysis of the reasons for the displacements of long-term embankments maintained on permafrost soils indicates that they mainly occur due to plastic deformations in the layer of seasonal freezing and thawing;therefore,the reconstruction of permafrost is not effective in this case.It is proposed to strengthen these embankments with the help of using jet technology for cementation of the top layer of the roadbed.This approach is considered through the example of the deforming embankment on 6,278 km of the Turinskaya-Karymskaya section of the Trans-Siberian Railway.

关 键 词：EMBANKMENT PERMAFROST roadbeds temperature FORECAST STRESS-STRAIN state jet technology 

分 类 号：U213.14[交通运输工程—道路与铁道工程]