季节性冻土地区的隧道工程防冻结构探究
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摘要
季节性冻土由内含冰的土壤、岩石构成,该地质结构受季节影响极为严重,在冬季时地层坚硬,在夏季时冻土会变成沼泽,造成地面沉降、凹陷等现象,使施工建设无法顺利进行,还会毁坏地基,影响工程建设安全性、稳定性。近年来,随着我国高铁在东北地区的全面布局,隧道穿越季节性冻土地带,如何解决冻融问题,保证隧道防冻结构的问题,逐步显现。依照吉图珲铁路客专项目隧道施工技术,研究季节性冻土地区隧道工程防冻结构,以期为季节性冻土隧道工程的建设施工综合能力提供依据。
Seasonal frozen soil is composed of soil and rock containing ice. The geological structure is seriously affected by the season.In winter,the stratum is hard,and in summer,the frozen soil will become swamp,resulting in land subsidence,depression and other phenomena,which makes construction unable to proceed smoothly,and will also destroy the foundation and shadow.Safety and stability of construction projects. In recent years,with the overall layout of high-speed railway in Northeast China,how to solve the freeze-thaw problem and ensure the anti-freezing structure of tunnels has gradually emerged. According to the tunnel construction technology of Jituhui Railway Passenger Special Project,this paper studies the anti-freezing structure of tunnel engineering in seasonal frozen soil area,in order to provide a basis for the comprehensive construction capacity of seasonal frozen soil tunnel engineering.
Seasonal frozen soil is composed of soil and rock containing ice. The geological structure is seriously affected by the season.In winter,the stratum is hard,and in summer,the frozen soil will become swamp,resulting in land subsidence,depression and other phenomena,which makes construction unable to proceed smoothly,and will also destroy the foundation and shadow.Safety and stability of construction projects. In recent years,with the overall layout of high-speed railway in Northeast China,how to solve the freeze-thaw problem and ensure the anti-freezing structure of tunnels has gradually emerged. According to the tunnel construction technology of Jituhui Railway Passenger Special Project,this paper studies the anti-freezing structure of tunnel engineering in seasonal frozen soil area,in order to provide a basis for the comprehensive construction capacity of seasonal frozen soil tunnel engineering.
引文
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