青藏铁路多年冻土区路基排水沟病害防治分析  

Analysis on Disease Prevention for Subgrade Drainage Ditch of Qinghai-Tibet Railway in Permafrost Region

作　　者：田亚护[1] 许国琪 董瑞峰 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]青藏铁路公司工务部,西宁810007 [3]西安市地下铁道有限公司安全质量监督处,西安710018

出　　处：《路基工程》2013年第2期22-25,共4页Subgrade Engineering

基　　金：青藏铁路公司科技研究开发计划项目(QZ2010-G03)

摘　　要：通过现场调查,青藏铁路多年冻土区路基排水沟的破坏主要表现为渠道混凝土板的酥化、破裂及渠内渗水和积水。而造成排水沟病害的主要原因为气候条件及施工质量、土体往复的不均匀冻胀融沉、冻结层上水。青藏铁路多年冻土区路基排水沟的病害防治措施应从控制土体冻胀、融沉和采用可适应土体不均匀变形的渠道结构两方面考虑。Through site investigation, the main failures of subgrade drainage ditch of Qinghai-Tibet Railway in permafrost region are revealed, including flakes and cracks of conduit concrete board, water seepage and accumulation inside conduit. The diseases thereof are mainly caused by climate, construction quality, repeated uneven frost heaving and thawing subsidence of soil mass, and suprapermafrost water. Thus the prevention measures related should be considered from two aspects, i.e. control of frost heaving and thawing subsidence of soil mass, and use of conduit structure suitable to uneven deformation of soil mass.

关 键 词：多年冻土区 路基排水沟 病害防治分析 

分 类 号：U416.168[交通运输工程—道路与铁道工程]