青藏铁路清水河段片石护坡路堤温度特性研究  

Temperature feature analysis for embankment with riprap slope protection in Qingshuihe test section of Qinghai-Tibet Railway

作　　者：魏静[1] 许兆义[1] 李成[2] 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,西安710043

出　　处：《岩土力学》2006年第5期773-777,共5页Rock and Soil Mechanics

基　　金：铁道部科技研究开发计划项目(No.2001G001-B-05);铁一院科技开发项目(No.院科05-01)

摘　　要：通过对青藏铁路清水河试验段片石护坡、无片石护坡的冻土路堤和地基的温度进行的全面监测,对比分析了路堤体内及基底的地温、积温及温度场中最大融化深度的变化情况,结果表明,采用片石护坡措施的试验路堤,与对比段(普通路堤)相比,降温效果明显。负积温量值大于对比段,最大融化深度抬升幅度较大。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,并有利于坡面防护,是一种施作方便,既能用于新建,又能用于补强的多年冻土主动保护措施。Based on the overall temperature monitoring for frozen soil embankment with riprap slope protection and without riprap slope protection in Qingshuihe test section of Qinghai-Tibet Railway, the ground temperature, accumulated temperature and the maximum thawing depth variation in temperature field of these two kinds of embankments were analyzed. It is shown that the experimental embankment with riprap protection has better effect for its decreasing temperature, lowering minus accumulated temperature and lifting maximum thawing depth than that of the embankment without engineering measures. Therefore, the riprap slope protection embankment, as a positive frozen soil protection measure for its effectively decreasing ground temperature and being advantageous for slope surface protection, could be conveniently Used not only for construction, but also for the future maintenance.

关 键 词：青藏铁路 片石 地温 积温 最大融化深度 

分 类 号：O416.1[理学—理论物理]