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Article: Stability analysis of rock blocks around a cross-harbor tunnel using the improved morphological visualization method

TitleStability analysis of rock blocks around a cross-harbor tunnel using the improved morphological visualization method
Authors
Issue Date2015
PublisherElsevier. The Journal's web site is located at http://www.elsevier.com/locate/enggeo
Citation
Engineering Geology, 2015, v. 187, p. 10-31 How to Cite?
AbstractThe morphological visualization method is improved by introducing the separating axes method to the element-block aggregation algorithm and the weighted quick-union method to the complex-block construction algorithm to enhance the computational efficiency of BLKLAB (Zhang and Lei, 2013a). The usage and effectiveness of the modified BLKLAB code are demonstrated through a case study of Xiang'an tunnel in Xiamen City of China. In this case study, the DifFUZZY method was employed to cluster the orientation data and probabilistic analysis was then performed to get a combination of geological and mechanical properties of discontinuities that is most detrimental to the stability of rock blocks and associated ground-supports. Based on these previous analyses, the fracture network was constructed. The stability of rock blocks around the tunnel was then evaluated, using the improved morphological visualization method in conjunction with the stereo-analytical method. A combination of shot concrete and bolts was proposed as the optimal support system, which agrees with the real situation.
Persistent Identifierhttp://hdl.handle.net/10722/215193

 

DC FieldValueLanguage
dc.contributor.authorWu, J-
dc.contributor.authorZhang, ZX-
dc.contributor.authorKwok, CY-
dc.date.accessioned2015-08-21T13:17:37Z-
dc.date.available2015-08-21T13:17:37Z-
dc.date.issued2015-
dc.identifier.citationEngineering Geology, 2015, v. 187, p. 10-31-
dc.identifier.urihttp://hdl.handle.net/10722/215193-
dc.description.abstractThe morphological visualization method is improved by introducing the separating axes method to the element-block aggregation algorithm and the weighted quick-union method to the complex-block construction algorithm to enhance the computational efficiency of BLKLAB (Zhang and Lei, 2013a). The usage and effectiveness of the modified BLKLAB code are demonstrated through a case study of Xiang'an tunnel in Xiamen City of China. In this case study, the DifFUZZY method was employed to cluster the orientation data and probabilistic analysis was then performed to get a combination of geological and mechanical properties of discontinuities that is most detrimental to the stability of rock blocks and associated ground-supports. Based on these previous analyses, the fracture network was constructed. The stability of rock blocks around the tunnel was then evaluated, using the improved morphological visualization method in conjunction with the stereo-analytical method. A combination of shot concrete and bolts was proposed as the optimal support system, which agrees with the real situation.-
dc.languageeng-
dc.publisherElsevier. The Journal's web site is located at http://www.elsevier.com/locate/enggeo-
dc.relation.ispartofEngineering Geology-
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in [Journal title]. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in PUBLICATION, [VOL#, ISSUE#, (DATE)] DOI# -
dc.titleStability analysis of rock blocks around a cross-harbor tunnel using the improved morphological visualization method-
dc.typeArticle-
dc.identifier.emailKwok, CY: fkwok8@hku.hk-
dc.identifier.authorityKwok, CY=rp01344-
dc.identifier.doi10.1016/j.enggeo.2014.12.014-
dc.identifier.hkuros248471-
dc.identifier.volume187-
dc.identifier.spage10-
dc.identifier.epage31-

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