Alternative Title
Paper No. 6.08
Location
St. Louis, Missouri
Session Start Date
3-8-1998
Session End Date
3-15-1998
Abstract
A criterion for identifying the squeezing potential of tunnel is proposed. Tunneling conditions, classified as slightly or non-squeezing, moderately squeezing and highly squeezing, were identified by relating the strength-stress (σcm/Po ) ratio to the development of plastic zone extent and the amount of tunnel closure. Actual case histories of tunneling in Taiwan show that this criterion predicts the tunnel performance quite well. This enables the identification of tunneling conditions expected which require special considerations in support design and excavation-support procedures.
Department(s)
Civil, Architectural and Environmental Engineering
Appears In
International Conference on Case Histories in Geotechnical Engineering
Meeting Name
Fourth Conference
Publisher
University of Missouri--Rolla
Publication Date
3-8-1998
Document Version
Final Version
Rights
© 1998 University of Missouri--Rolla, All rights reserved.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Chern, J. C.; Yu, C. W.; and Kao, H. C., "Tunneling in Squeezing Ground" (1998). International Conference on Case Histories in Geotechnical Engineering. 13.
http://scholarsmine.mst.edu/icchge/4icchge/4icchge-session06/13
Tunneling in Squeezing Ground
St. Louis, Missouri
A criterion for identifying the squeezing potential of tunnel is proposed. Tunneling conditions, classified as slightly or non-squeezing, moderately squeezing and highly squeezing, were identified by relating the strength-stress (σcm/Po ) ratio to the development of plastic zone extent and the amount of tunnel closure. Actual case histories of tunneling in Taiwan show that this criterion predicts the tunnel performance quite well. This enables the identification of tunneling conditions expected which require special considerations in support design and excavation-support procedures.
