青藏高原高温多年冻土区片块石通风路基应用研究  

Application and Research on Ventilating Block Stone Embankment in High Temperature Permafrost Areas of Qinghai-Tibetan Plateau

作　　者：奚家米[1] 张世雷 陈建兵[3] 董元宏[3] 金龙[3] 陈冬根[3] 

机构地区：[1]西安科技大学建筑与土木工程学院,西安市710054 [2]淄博正承置业有限公司,淄博市255100 [3]中交第一公路勘察设计研究院有限公司多年冻土地区公路建设与养护技术交通行业重点实验室,西安市710065

出　　处：《公路》2015年第5期26-33,共8页Highway

基　　金：交通运输部科技项目;项目编号2011-319-495-090;交通运输部应用基础研究项目;项目编号2012-319-495-030

摘　　要：基于青藏公路五道梁段片块石路基与普通路基2年来路基地温现场实测数据资料,对比分析了两种结构路基地温随时间和深度的变化过程。结果表明:传统路基不利于多年冻土的保护,将会引起其下部多年冻土的严重退化,导致路基失稳和路基病害的发生;片块石路基可以有效地降低路基阴阳坡效应造成的路基体内部的温度差异,还可以起到推迟路基的融化时间和降低路基浅层地温的作用,有利于多年冻土的生存和发育,维护路基的稳定。片块石路基具有一定的降温效果,适用于在多年冻土区路基工程中应用。Based on the in-situ measured data of ground temperature about block stone embankment （BSE） and traditional embankment（TE） at Wudaoliang section on the Qinghai-Tibet Highway during 2010;2012, the changing processes of ground temperature over time and depth of the two structure embankment are compared. The observational data shows that traditional embankment is unfavorable for the protection of permafrost which will cause serious degradation of the underlying permafrost and result in the occurrence of instability and diseases of the embankment; and BSE can effectively reduce the temperature difference caused by the effect of shade slope and sunshine slope of embankment, at the same time it also can delay the melting time and reducing the shallow ground temperature of embankment. This will facilitate the survival and development of permafrost and maintain the stability of embankment. BSE is suitable for applications in roadbed project in permafrost regions due to the cooling effect of BSE.

关 键 词：道路工程 降温效果 片块石路基 多年冻土 温度场 

分 类 号：U416.1[交通运输工程—道路与铁道工程]