藏日拉隧道穿越冰碛体掌子面发生溜坍原因分析及处治措施  

Reason Analysis and Treatment Measures for the Slip Collapse of Zangrila Tunnel crossing Moraine Body

作　　者：王勇 艾永祥 

机构地区：[1]中铁二局第五工程有限公司,成都610091

出　　处：《路基工程》2017年第2期220-224,共5页Subgrade Engineering

摘　　要：以青藏高原拉林铁路藏日拉隧道为工程背景,针对该隧道穿越冰碛体开挖过程中引发溜坍的问题,采用现场地质勘探、加固措施和监控量测等手段,对溜坍的原因进行分析,并提出处治措施。结果表明:按照拟定的处治方案施工后,溜坍体得到了有效固结,隧道洞室处于稳定状态。Based on Zangrila Tunnel of Nyingchi--Lhasa Railway in Qinghai--Tibet Plateau, the reason of collapse is analyzed and the treatment measures are put forward based on the slip collapse occurred during the excavation of the tunnel crossing the moraine body by adopting the means of site geological exploration, reinforcement and monitoring and measuring, etc. The results show that the slip collapse body is effectively consolidated and the tunnel cavities are stable after the construction as per the prepared treatment proposal.

关 键 词：青藏高原 冰碛体 隧道溜坍 原因分析 施工措施 监控量测 

分 类 号：U172[交通运输工程]