青藏铁路片石护坡路堤温度特性分析  

CHARACTERIZATION OF TEMPERATURE OF EMBANKMENT WITH RIPRAP SLOPE PROTECTION ALONG QINGHAI-TIBET RAILWAY

作　　者：魏静[1] 许兆义[1] 包黎明[2] 葛建军[2] 

机构地区：[1]北京交通大学土建学院,北京100044 [2]铁道第一勘察设计院地路处,兰州730000

出　　处：《工程地质学报》2005年第4期494-501,共8页Journal of Engineering Geology

基　　金：铁道部科技研究开发计划项目(2001G001-B-05);铁一院科技开发项目(院科05-01)

摘　　要：通过对青藏铁路清水河段片石护坡路堤和普通路堤实体工程进行的地温监测,对比分析了两种路堤体内及基底的温度特性,分析结果表明采用片石护坡措施的路堤,与普通路堤相比,降温效果好,负积温量值大,最大融化深度抬升幅度也较大,因此,片石护坡能够有效发挥降低地温、保护多年冻土的作用。This paper characterized the monitored ground temperature of the frozen soil embankment with riprap slope protection and the normal embankment in Qingshuihe test section along Qinghai -Tibet railway. The ground temperature data inside the embankment and at the bottom of base were compared for these two kinds of embankment. The results showed that the experimental embankment with riprap protection performs better in lowering temperature, lowering minus accumulated temperature and reducing maximum thawing depth than the common embankment. Therefore, the embankment with riprap slope protection could provide permafrost protection by effectively decreasing ground temperature.

关 键 词：青藏铁路 片石 地温 积温 最大融化深度 

分 类 号：U416.1[交通运输工程—道路与铁道工程]