3D numerical model for dynamic loading-induced multiple fracture zones around underground cavity faces

Simple item page
dc.contributor.authorTao, M.
dc.contributor.authorLi, X.
dc.contributor.authorWu, C.
dc.date.issued2013
dc.description.abstractThree dimensional numerical modelling was used to examine the fracture responses around cavities in rock masses experiencing the stress of excavation. In addition to the primary fracture zone in the near-field, numerical modelling generated a second fracture zone in the far-field and an elastic non-fracture zone between the two fields, i.e., fracture and non-fracture zones occurred alternately around a deep cavity. Further research illustrated that the dynamic load and static stress gradient are two necessary precursors for a far-field fracture in the excavation process. Neither quasi-static loading nor homogeneous stress conditions could induce a far-field fracture. A simple theory is introduced, suggesting that multiple fracture zones occur during excavation due to both the initial stress gradient and the dynamic load. This finding indicates that it may be possible to induce continuous rock fractures in deep underground rock masses by employing optimal excavation methods to generate multiple contiguous fracture zones. © 2013 Elsevier Ltd.
dc.description.statementofresponsibilityMing Tao, Xibing Li, Chengqing Wu
dc.identifier.citationComputers and Geotechnics, 2013; 54:33-45
dc.identifier.doi10.1016/j.compgeo.2013.06.002
dc.identifier.issn0266-352X
dc.identifier.urihttp://hdl.handle.net/2440/79840
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.rightsCopyright © 2013 Elsevier Ltd. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.compgeo.2013.06.002
dc.subjectDeep underground
dc.subjectInitial stress
dc.subjectStress gradient
dc.subjectCoupled static and dynamic
dc.subjectZonal disintegration
dc.title3D numerical model for dynamic loading-induced multiple fracture zones around underground cavity faces
dc.typeJournal article
pubs.publication-statusPublished

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
hdl_79840.pdf
Size:
1.99 MB
Format:
Adobe Portable Document Format
Description:
Accepted version
Download

Collections

Civil and Environmental Engineering publications