File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Effective viscoelastic behaviour of rock mass with double-scale discontinuities

TitleEffective viscoelastic behaviour of rock mass with double-scale discontinuities
Authors
KeywordsWave propagation
Defects
Geomechanics
Issue Date2012
Citation
Geophysical Journal International, 2012, v. 191, n. 1, p. 147-154 How to Cite?
AbstractEffective viscoelastic behaviour of a rock mass with double-scale discontinuities is investigated. The rock mass is modelled as a system of microdefected rock traversed by macrojoints. The effect of microdefects on the dynamic behaviour is evaluated by a viscoelastic equivalent medium model implicitly, whereas the macrojoints in the rock mass are modelled explicitly as physical discontinuities. Therefore, a homogenization-discontinuity combination approach is proposed to investigate the effective viscoelastic behaviour of rock mass under dynamic loading. The effective wave propagation coefficients and the effective viscoelastic complex moduli (storage modulus and loss modulus) are analytically derived. The effects of the double-scale discontinuities on the energy dissipation and the phase velocity are also discussed. It is shown that the effective behaviour of the rock mass with double-scale discontinuities is two-phase viscoelastic. Microdefect and macrojoint have different frequency-sensitive ranges and the effective viscoelastic behaviour is highly related to the stiffness of the discontinuities. © 2012 The Authors Geophysical Journal International © 2012 RAS.
Persistent Identifierhttp://hdl.handle.net/10722/213980
ISSN
2015 Impact Factor: 2.484
2015 SCImago Journal Rankings: 1.839

 

DC FieldValueLanguage
dc.contributor.authorFan, L. F.-
dc.contributor.authorMa, G. W.-
dc.contributor.authorWong, L. N Y-
dc.date.accessioned2015-08-19T13:41:26Z-
dc.date.available2015-08-19T13:41:26Z-
dc.date.issued2012-
dc.identifier.citationGeophysical Journal International, 2012, v. 191, n. 1, p. 147-154-
dc.identifier.issn0956-540X-
dc.identifier.urihttp://hdl.handle.net/10722/213980-
dc.description.abstractEffective viscoelastic behaviour of a rock mass with double-scale discontinuities is investigated. The rock mass is modelled as a system of microdefected rock traversed by macrojoints. The effect of microdefects on the dynamic behaviour is evaluated by a viscoelastic equivalent medium model implicitly, whereas the macrojoints in the rock mass are modelled explicitly as physical discontinuities. Therefore, a homogenization-discontinuity combination approach is proposed to investigate the effective viscoelastic behaviour of rock mass under dynamic loading. The effective wave propagation coefficients and the effective viscoelastic complex moduli (storage modulus and loss modulus) are analytically derived. The effects of the double-scale discontinuities on the energy dissipation and the phase velocity are also discussed. It is shown that the effective behaviour of the rock mass with double-scale discontinuities is two-phase viscoelastic. Microdefect and macrojoint have different frequency-sensitive ranges and the effective viscoelastic behaviour is highly related to the stiffness of the discontinuities. © 2012 The Authors Geophysical Journal International © 2012 RAS.-
dc.languageeng-
dc.relation.ispartofGeophysical Journal International-
dc.subjectWave propagation-
dc.subjectDefects-
dc.subjectGeomechanics-
dc.titleEffective viscoelastic behaviour of rock mass with double-scale discontinuities-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1365-246X.2012.05573.x-
dc.identifier.scopuseid_2-s2.0-84866379297-
dc.identifier.hkuros259291-
dc.identifier.volume191-
dc.identifier.issue1-
dc.identifier.spage147-
dc.identifier.epage154-
dc.identifier.eissn1365-246X-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats