高含水率黄土公路隧道塌方涌泥处理方案  

Treatment Scheme for Collapse and Mud Gushing of Highway Tunnel in High Moisture Content Loess

作　　者：赵栋 ZHAO Dong(Shaanxi Provincial Transport Planning Design And Research Institute Co.,Ltd.,Xi’an,Shaanxi 721000,China)

机构地区：[1]陕西省交通规划设计研究院有限公司,陕西西安721000

出　　处：《黑龙江交通科技》2023年第1期103-105,共3页Communications Science and Technology Heilongjiang

摘　　要：黄土经自重固结后,在未经地下水扰动后具有自稳能力。但经地下水渗流后迅速丧失自稳能力,表现为泥化、软化,开挖后易发较大规模塌方。根据西安外环高速公路白鹿原隧道塌方实例分析了高含水率黄土隧道塌方变形机理,介绍了一例塌方处理的方案,为类似工程提供参考。After self-weight consolidation, loess has self-stability without groundwater disturbance.However, after groundwater seepage, it quickly loses its self-stabilizing ability, which is characterized by argillization and softening, and is prone to large-scale collapse after excavation.Based on the collapse example of a loess tunnel in Northwest China, the collapse deformation mechanism of high moisture content loess tunnel is analyzed, and a collapse treatment scheme is introduced, which provides a reference for similar projects.

关 键 词：黄土隧道 塌方冒顶 处理方案 

分 类 号：U433[交通运输工程—道路与铁道工程]