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Numerical modelling of the effects of joint spacing on rock fragmentation by TBM cutters
Gong, QM; Jiao, YY; Zhao, J
2006
Source PublicationTUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
ISSN0886-7798
Volume21Issue:1Pages:46-55
Abstract

The influence of joint spacing on tunnel boring machine (TBM) penetration performance has been extensively observed at TBM site. However, the mechanism of rock mass fragmentation as function of the joint spacing has been scarcely studied. In this study, the rock indentation by a single TBM cutter is simulated by using the discrete element method (DEM), and the rock fragmentation process is highlighted. A series of two-dimensional numerical modelling with different joint spacing in a rock mass have been performed to explore the effect of joint spacing on rock fragmentation by a TBM cutter. Results show that the joint spacing can significantly influence the crack initiation and propagation, as well as the fragmentation pattern, and can hence affect the penetration rate of the TBM. Two crack initiation and propagation modes are found to fragment the rock mass due to the variation of joint spacing. The simulation results are analyzed and compared with in situ measurements. (C) 2005 Elsevier Ltd. All rights reserved.

KeywordTbm Cutter Fragmentation Joint Spacing Crack Udec
DOI10.1016/j.tust.2005.06.004
Indexed BySCI
Language英语
WOS Research AreaConstruction & Building Technology ; Engineering
WOS SubjectConstruction & Building Technology ; Engineering, Civil
WOS IDWOS:000234066200005
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:114[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://119.78.100.198/handle/2S6PX9GI/3144
Collection岩土力学所知识全产出_期刊论文
AffiliationNanyang Technol Univ, Protect Technol Res Ctr, Underground Technol & Rock Engn Program; Nanyang Technol Univ, Sch Civil & Environm Engn; Chinese Acad Sci, Inst Rock & Soil Mech
Recommended Citation
GB/T 7714
Gong, QM,Jiao, YY,Zhao, J. Numerical modelling of the effects of joint spacing on rock fragmentation by TBM cutters[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2006,21(1):46-55.
APA Gong, QM,Jiao, YY,&Zhao, J.(2006).Numerical modelling of the effects of joint spacing on rock fragmentation by TBM cutters.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,21(1),46-55.
MLA Gong, QM,et al."Numerical modelling of the effects of joint spacing on rock fragmentation by TBM cutters".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 21.1(2006):46-55.
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