TY - GEN
T1 - Mechanical behavior of ground due to EPB shield TBM tunnel excavation passing through fractured zone
AU - Cho, Won Sub
AU - Song, Ki Il
AU - Kim, Kyoung Yul
PY - 2014
Y1 - 2014
N2 - Recently, tunneling with shield tunnel boring machine (TBM) is getting popular for the construction of cable tunnel in urban area. Mechanized tunneling method using shield TBM has various advantages such as minimization of ground settlement and prevention of vibration induced by blasting that should be accompanied by conventional tunneling. In Korea, earth pressure balance (EPB) type of shield TBM has been mainly used. Despite the popularity of shield TBM for cable tunnel construction, studies on the mechanical behavior of cable tunnel driven by shield TBM passing through the fracture zone are insufficient. Thus, in this study, three dimensional numerical modelling of EPB shield TBM is presented. And, the effect of fractured zone ahead of tunnel face on the mechanical behavior of composite ground consisted with soil, weathered soil, weathered rock and fractured zone is investigated. The critical orientation of fractured zone ahead of tunnel face is derived based on the results obtained from the 3-dimensional numerical analysis.
AB - Recently, tunneling with shield tunnel boring machine (TBM) is getting popular for the construction of cable tunnel in urban area. Mechanized tunneling method using shield TBM has various advantages such as minimization of ground settlement and prevention of vibration induced by blasting that should be accompanied by conventional tunneling. In Korea, earth pressure balance (EPB) type of shield TBM has been mainly used. Despite the popularity of shield TBM for cable tunnel construction, studies on the mechanical behavior of cable tunnel driven by shield TBM passing through the fracture zone are insufficient. Thus, in this study, three dimensional numerical modelling of EPB shield TBM is presented. And, the effect of fractured zone ahead of tunnel face on the mechanical behavior of composite ground consisted with soil, weathered soil, weathered rock and fractured zone is investigated. The critical orientation of fractured zone ahead of tunnel face is derived based on the results obtained from the 3-dimensional numerical analysis.
UR - http://www.scopus.com/inward/record.url?scp=84907359104&partnerID=8YFLogxK
U2 - 10.1201/b17240-108
DO - 10.1201/b17240-108
M3 - Conference contribution
AN - SCOPUS:84907359104
SN - 9781138027008
T3 - Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 8th Int. Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, TC204 ISSMGE - IS-SEOUL 2014
SP - 577
EP - 580
BT - Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 8th Int. Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, TC204 ISSMGE - IS-SEOUL 2014
PB - Taylor and Francis - Balkema
T2 - 8th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, TC204 ISSMGE - IS-SEOUL 2014
Y2 - 25 August 2014 through 27 August 2014
ER -