Effects of fault zones on failure mechanism of tunnel, an experimental study

authored by: Ba Thao Vu, Hehua Zhu, Qianwei Xu, Xiaoying Zhuang
Abstract: This paper presents a large-scale experiment for studying the effects of fault zones on the failure process and failure pattern of tunnel. Firstly, appropriate synthetic materials representing fault zones and rock mass were developed. The mix of fine sand and grease was adopted to model the fault zones. Secondly, an experimental model was then performed to investigate the effects of fault zones on the progressive failure of tunnels. It was found that the presence of fault zones caused the asymmetry of convergent deformations and failure patterns. The fault zone itself failed initially and became a slip surface, which then led to the failure of surrounding rock masses and eventually caused the collapse of the tunnel. Failure mechanisms of tunnels with a fault zone obtained by model tests are helpful for the implementation of optimum support designing.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Vietnam Academy for Water Resources
Tongji University
Type: Conference contribution
Pages: 1186-1191
No. of pages: 6
Publication date: 03.08.2018
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Geotechnical Engineering and Engineering Geology, Mechanics of Materials
Electronic version(s): https://doi.org/10.1007/978-3-319-97115-5_66 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{fdc662a31d8843f3b42e97624289128c,
title = "Effects of fault zones on failure mechanism of tunnel, an experimental study",
abstract = "This paper presents a large-scale experiment for studying the effects of fault zones on the failure process and failure pattern of tunnel. Firstly, appropriate synthetic materials representing fault zones and rock mass were developed. The mix of fine sand and grease was adopted to model the fault zones. Secondly, an experimental model was then performed to investigate the effects of fault zones on the progressive failure of tunnels. It was found that the presence of fault zones caused the asymmetry of convergent deformations and failure patterns. The fault zone itself failed initially and became a slip surface, which then led to the failure of surrounding rock masses and eventually caused the collapse of the tunnel. Failure mechanisms of tunnels with a fault zone obtained by model tests are helpful for the implementation of optimum support designing.",
keywords = "Fault zone, Progressive failure, Synthetic material, Tunnel",
author = "Vu, {Ba Thao} and Hehua Zhu and Qianwei Xu and Xiaoying Zhuang",
note = "Funding information:. This study was financially supported by Natural Science Foundation of China (No. 41130751).; China-Europe Conference on Geotechnical Engineering, 2016 ; Conference date: 13-08-2016 Through 16-08-2016",
year = "2018",
month = aug,
day = "3",
doi = "10.1007/978-3-319-97115-5_66",
language = "English",
isbn = "9783319971148",
series = "Springer Series in Geomechanics and Geoengineering",
publisher = "Springer Verlag",
number = "216849",
pages = "1186--1191",
editor = "Wei Wu and Hai-Sui Yu",
booktitle = "Proceedings of China-Europe Conference on Geotechnical Engineering",
address = "Germany",
edition = "216849",
}