文档介绍：第 25 卷第 3 期岩石力学与工程学报
2006 年 3 月 Chinese Journal of Rock Mechanics and Engineering March,2006

青藏高原多年冻土区冷却路基技术
现场实效监测研究

马巍,余邵水,吴青柏,张鲁新
(中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州 730000)

摘要:以青藏铁路现场实体工程为背景,选用块石路堤、块石护坡和通风管路堤主动冷却措施进行现场实体工程
试验,通过对路基内温度场的监测,研究这些措施对保护冻土的作用及效果。分析结果表明,2 个冻融周期后,
块石护坡路基、通风管路基和块石路基均具有一定的调节降温作用,有利于下覆多年冻土的保护。但是冻土上限
的抬升需要消耗下部土体的冷能来实现,说明冻土路基温度场还处于不稳定阶段。
关键词:土力学;冷却路基措施;多年冻土区;青藏高原
中图分类号:TU 445 文献标识码:A 文章编号:1000–6915(2006)03–0563–09

STUDY ON IN-SITU MONITORING TECHNOLOGY OF COOLING
ROADBED IN PERMAFROST REGIONS OF QINGHAI—TIBET PLATEAU

MA Wei,YU Shao-shui,WU Qing-bai,ZHANG Lu-xin
(State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering
Research Institute,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China)

Abstract:Qinghai—Tibet railway crosses 550 km continuous permafrost regions and 82 km discontinuous
permafrost regions,where high temperature regions(annual average ground temperature is above - ℃) occupy
275 km,ice-rich regions cover 221 km,overlapped sections of high temperature and ice-rich occupy about 134 km.
As a result of the influences of both global climate warming and railway engineering on the permafrost
degradation,design and construction of roadbed in permafrost regions are faced with quite great difficulties. As the
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