关角隧道排水设施冻害原因分析及处理方案研究  

Study on Freezing Damage of Drainage Facility Cause and Treatment Scheme for Guanjiao Tunnel

作　　者：张旭珍[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043

出　　处：《铁道建筑》2016年第3期86-89,共4页Railway Engineering

基　　金：铁道部科技研究开发计划(2008G030-A)

摘　　要：关角隧道地处青藏高原,属于严寒地区,隧道开通运营后洞口排水沟就出现了冻害,对行车安全构成了严重威胁。本文详细介绍了关角隧道排水沟冻害情况,分析了其产生的原因,对加热、截流、加强洞内保温措施三种处理方案进行了比选,选择了水沟加热方案。实践证明,严寒地区隧道洞口段排水沟内采取电伴热带加热防止水沟冻害的措施行之有效,可在类似工程设计中推广应用。Guanjiao tunnel located in Qinghai- Tibet Plateau,which is a severe cold region. The freezing damage appeared in tunnel entrance drainage ditch after tunnel operation and posed a serious threat to traffic safety. This paper introduced the freezing damage of drainage ditch in Guanjiao tunnel,analyzed the causes,compared the three treatment schemes including ditches heating,ditches closure,strengthening the ditches insulation,and selected the ditches heating scheme. The practice proved that the electric tracing ribbon was an effective way to prevent freezing damage of drainage ditch at tunnel entrance in severe cold region,which could be applied in similar project design.

关 键 词：严寒地区 隧道 水沟冻害 电伴热带 

分 类 号：U453.6[建筑科学—桥梁与隧道工程]