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Article: Calibration of rock joint roughness and shear strength with the use of 3D laser scanning technique

TitleCalibration of rock joint roughness and shear strength with the use of 3D laser scanning technique
Authors
Keywords3D Laser Scanning
Rock Joint
Shear Strength Criterion
Shearing Resistance
Issue Date2011
PublisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.asp
Citation
Transactions Hong Kong Institution Of Engineers, 2011, v. 18 n. 3, p. 27-34 How to Cite?
AbstractIn this paper, the adequacy of adopting 3D laser scanning technique to study the characteristics of sheeting joints roughness is investigated and a methodology in determining the shearing resistance of a rock joint under different scales is proposed. Two types of 3D laser scanners were used to digitise the granite joint planes from the sizes of 60 mm to 8,000 mm in length. They generated an extensive amount of coordinate points that simulate a realistic 3D image and contour plot of the surface. Through trials of different sampling lengths in 2D analysis, the roughness angles are measured from scanned coordinates and calibrated against the peak frictional angles and the joint roughness coefficients (JRC) that have been measured in standard laboratory test. The results demonstrate that although shearing resistance of rock joint is highly scale-dependent, the proposed framework is able to quantify the shearing resistance of rock joints due to the relative contribution of large-scale undulation, and laboratory-scale asperities angle using a consistent measurement method offered by 3D laser scanner. This framework is illustrated with the help of a worked example of scanning and measuring different sizes of typical sheeting joints that are commonly found in Hong Kong.
Persistent Identifierhttp://hdl.handle.net/10722/150617
ISSN
2015 SCImago Journal Rankings: 0.145
References

 

DC FieldValueLanguage
dc.contributor.authorTam, CCYen_US
dc.contributor.authorKwong, AKLen_US
dc.contributor.authorLee, PKKen_US
dc.date.accessioned2012-06-26T06:06:10Z-
dc.date.available2012-06-26T06:06:10Z-
dc.date.issued2011en_US
dc.identifier.citationTransactions Hong Kong Institution Of Engineers, 2011, v. 18 n. 3, p. 27-34en_US
dc.identifier.issn1023-697Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/150617-
dc.description.abstractIn this paper, the adequacy of adopting 3D laser scanning technique to study the characteristics of sheeting joints roughness is investigated and a methodology in determining the shearing resistance of a rock joint under different scales is proposed. Two types of 3D laser scanners were used to digitise the granite joint planes from the sizes of 60 mm to 8,000 mm in length. They generated an extensive amount of coordinate points that simulate a realistic 3D image and contour plot of the surface. Through trials of different sampling lengths in 2D analysis, the roughness angles are measured from scanned coordinates and calibrated against the peak frictional angles and the joint roughness coefficients (JRC) that have been measured in standard laboratory test. The results demonstrate that although shearing resistance of rock joint is highly scale-dependent, the proposed framework is able to quantify the shearing resistance of rock joints due to the relative contribution of large-scale undulation, and laboratory-scale asperities angle using a consistent measurement method offered by 3D laser scanner. This framework is illustrated with the help of a worked example of scanning and measuring different sizes of typical sheeting joints that are commonly found in Hong Kong.en_US
dc.languageengen_US
dc.publisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.aspen_US
dc.relation.ispartofTransactions Hong Kong Institution of Engineersen_US
dc.subject3D Laser Scanningen_US
dc.subjectRock Jointen_US
dc.subjectShear Strength Criterionen_US
dc.subjectShearing Resistanceen_US
dc.titleCalibration of rock joint roughness and shear strength with the use of 3D laser scanning techniqueen_US
dc.typeArticleen_US
dc.identifier.emailKwong, AKL:kwongakl@hkucc.hku.hken_US
dc.identifier.emailLee, PKK:hreclkk@hkucc.hku.hken_US
dc.identifier.authorityKwong, AKL=rp00129en_US
dc.identifier.authorityLee, PKK=rp00141en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-80155201524en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80155201524&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume18en_US
dc.identifier.issue3en_US
dc.identifier.spage27en_US
dc.identifier.epage34en_US
dc.publisher.placeHong Kongen_US
dc.identifier.scopusauthoridTam, CCY=53985360100en_US
dc.identifier.scopusauthoridKwong, AKL=24385436300en_US
dc.identifier.scopusauthoridLee, PKK=24522826500en_US

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