多年冻土区隧道浅埋段热棒群防护技术  

HEAT PIPE GROUP PROTECTION TECHNOLOGY FOR SHALLOW-BURIED SECTION OF TUNNEL PORTAL IN PERMAFROST REGION

作　　者：李奋 武小鹏 刘锟 LI Fen;WU Xiaopeng;LIU Kun(Gansu CSCEC Municipal Engineering Inverstigation and Design Institute Co.,Ltd.,Lanzhou 730000,China;Jiaxing University College of Civil Engineering and Architecture,Zhejiang Jiaxing 314001,China;Northwest Research Institute Co.,Ltd.of China Railway Engineer Corporation,Lanzhou 730000,China)

机构地区：[1]甘肃中建市政工程勘察设计研究院有限公司,兰州730000 [2]嘉兴学院,建筑工程学院,浙江嘉兴314001 [3]中铁西北科学研究院有限公司,兰州730000

出　　处：《低温建筑技术》2023年第3期114-118,共5页Low Temperature Architecture Technology

摘　　要：文中以姜路岭隧道为依托,通过对多年冻土区隧道浅埋段热棒群主动热防护实体工程的设计、地温监测分析及跟踪调查,得出热棒群的应用抬升了隧道洞顶冻土上限、形成了冻土隔水层、缩短了隧道围岩冻融圈回冻时间、有效防止了隧道洞口浅埋段病害的产生和发展,为多年冻土区隧道浅埋段同类工程的病害预防及治理提供了参考.Based on the Jiangluling Tunnel project,we investigate the engineering design and ground temperature monitoring on the active thermal protection entity project of the heat pipe group in the shallow-buried section of the tunnel in the permafrost region.It is concluded that the application of the heat pipe group has raised the upper limit of the frozen soil at the tunnel top,and the frozen soil impermeable layer formed,which shortens the freezing time of the surrounding rock of the tunnel.The occurrence and development of the disease in the shallow-buried section of the tunnel portal are effectively prevented,providing the eference for disease prevention and treatment of similar projects in the shallow-buried section of tunnels in permafrost regions.

关 键 词：多年冻土 隧道浅埋段 热棒群 防护技术 

分 类 号：TU445[建筑科学—岩土工程]