Analysis of a tunnel failure caused by leakage of the shield tail seal system  

作　　者：Chao Yu Annan Zhou Jun Chen Arul Arulrajah Suksun Horpibulsuk 

机构地区：[1]State Key Laboratory of Ocean Engineering,Department of Civil Engineering,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]Discipline of Civil and Infrastructure Engineering,School of Engineering,Royal Melbourne Institute of Technology(RMIT),Victoria 3001,Australia [3]Department of Civil and Construction Engineering,Swinburne University of Technology,Victoria 3122,Australia [4]School of Civil Engineering,and Center of Excellence in Innovation for Sustainable Infrastructure Development,Suranaree University of Technology,Nakhon Ratchasima 30000,Thailand

出　　处：《Underground Space》2020年第2期105-114,共10页地下空间（英文）

基　　金：The research work described herein was funded by the National Basic Research Program of China(973 Program:2015CB057806).This financial support is gratefully acknowledged.

摘　　要：This paper presents an analysis of a tunnel failure accident during shield tunnel construction on Foshan Metro Line 2 in China.The failure is caused by the leakage of the multilayer seal system,which consists of several brush seals at the tail of the shield.Four different failure modes for the multilayer seal system are discussed.A simple structural analysis of the brush seals is then conducted,and failure mode 4(failure due to brush seal deformation)is identified as a major reason for the Foshan tunnel accident.A finite element method(FEM)analysis is employed to validate the conclusions drawn from the simple structural analysis of the brush seals.

关 键 词：LEAKAGE Shield tunneling Brush seals Finite element 

分 类 号：U458[建筑科学—桥梁与隧道工程]