多年冻土区埋地式输油管道地基热稳定性研究  

Research on Thermal Stability of Foundation of Buried Oil Pipeline in Permafrost Region

作　　者：杨永鹏[1] 宋曦[1] 

机构地区：[1]兰州理工大学,兰州730050

出　　处：《铁道工程学报》2010年第11期10-13,46,共5页Journal of Railway Engineering Society

基　　金：中俄输油管道资助项目(200705)

摘　　要：研究目的:多年冻土区埋地式输油管道在正温油品的影响下,将对多年冻土地基产生扰动,形成融化圈。同时,多年冻土的融沉及活动层的冻融对管道地基工程造成破坏,引起管道地基的不均匀变形,影响输油管道的安全。本文通过建立埋地式输油管道融化圈计算模型,计算出融化圈的厚度,并提出地基处理方法;为多年冻土区埋地式输油管道敷设提供依据。研究结论:文章经过计算分析和研究,根据多年冻土区埋地式输油管道的融化圈计算模型,并计算得出融化圈大小;研究得出利用粗粒土换填加保温板形式对多年冻土区埋地式输油管道的进行处理,可以减少输油管道融沉冻胀量,保证管道地基的稳定。Research purposes： Under the effect of positive temperature oil,the oil pipeline in permafrost region produces the disturbance to the foundation in permafrost region,resulting in a thawing cylinder.At same time,the thawing subsidence of frozen soil and thawing of the active layer affect the pipeline foundation,resulting in uneven subsidence of the pipeline foundation to impact the pipeline safety.The model for calculation of the thawing cylinder of buried oil pipeline was used to calculate the thickness of the thawing cylinder,and the method was offered to treat the foundation for the purpose of providing the basis for laying the buried oil pipeline in permafrost region.Research conclusions：From the systematic analysis and research on calculation of the size of the thawing cylinder of the buried oil pipeline in permafrost regions with the calculation model,it is concluded application of coarse-grain soil instead of the heating plate for buried oil pipeline in permafrost region can reduce thawing settlement and frost-heaving of the oil pipeline foundation and guarantee the the stability of the pipeline foundation.

关 键 词：多年冻土 输油管道 融化圈 热稳定性 

分 类 号：U213.14[交通运输工程—道路与铁道工程]