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Article: Weathered rock characterization using drilling parameters

TitleWeathered rock characterization using drilling parameters
Authors
KeywordsDrilling
Penetration rate
Percussion index
Standard penetration
Issue Date2003
PublisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj
Citation
Canadian Geotechnical Journal, 2003, v. 40 n. 3, p. 661-668 How to Cite?
AbstractThe characterization of weathered rocks by the use of drilling parameters is presented. Drilling parameters obtained from the drilling process monitoring system during the installation of soil nails into weathered rocks are used in this investigation. A new drilling index Pi, simplified from the concept of the specific energy, is used in an attempt to differentiate weathered rocks. With Pi, or the penetration rate, boundaries of weathered rocks between (1) soil and rock ranges, and (2) grade II and grade III rocks in accordance with the six-fold rock material decomposition grade are identified. For weathered rocks in the soil range, quantitative characterization has been established in this study by using the drilling parameters. An empirical equation has been established for estimating the standard penetration resistance N value from the drilling parameter Pi, which is used in turn to determine the Mohr-Coulomb friction angle based on the work of Schmertmann. Although this approach tends to yield a slightly larger Mohr-Coulomb friction angle than that from laboratory tests, results obtained in this attempt reveal that estimation of the Mohr-Coulomb friction angle from drilling parameters is attainable with reasonable accuracy.
Persistent Identifierhttp://hdl.handle.net/10722/42068
ISSN
2015 Impact Factor: 1.877
2015 SCImago Journal Rankings: 2.093
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSugawara, Jen_HK
dc.contributor.authorYue, ZQen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorLaw, KTen_HK
dc.contributor.authorLee, CFen_HK
dc.date.accessioned2007-01-08T02:28:09Z-
dc.date.available2007-01-08T02:28:09Z-
dc.date.issued2003en_HK
dc.identifier.citationCanadian Geotechnical Journal, 2003, v. 40 n. 3, p. 661-668en_HK
dc.identifier.issn0008-3674en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42068-
dc.description.abstractThe characterization of weathered rocks by the use of drilling parameters is presented. Drilling parameters obtained from the drilling process monitoring system during the installation of soil nails into weathered rocks are used in this investigation. A new drilling index Pi, simplified from the concept of the specific energy, is used in an attempt to differentiate weathered rocks. With Pi, or the penetration rate, boundaries of weathered rocks between (1) soil and rock ranges, and (2) grade II and grade III rocks in accordance with the six-fold rock material decomposition grade are identified. For weathered rocks in the soil range, quantitative characterization has been established in this study by using the drilling parameters. An empirical equation has been established for estimating the standard penetration resistance N value from the drilling parameter Pi, which is used in turn to determine the Mohr-Coulomb friction angle based on the work of Schmertmann. Although this approach tends to yield a slightly larger Mohr-Coulomb friction angle than that from laboratory tests, results obtained in this attempt reveal that estimation of the Mohr-Coulomb friction angle from drilling parameters is attainable with reasonable accuracy.en_HK
dc.format.extent1085118 bytes-
dc.format.extent4105 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgjen_HK
dc.relation.ispartofCanadian Geotechnical Journalen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsCanadian Geotechnical Journal. Copyright © N R C Research Press.en_HK
dc.subjectDrillingen_HK
dc.subjectPenetration rateen_HK
dc.subjectPercussion indexen_HK
dc.subjectStandard penetrationen_HK
dc.titleWeathered rock characterization using drilling parametersen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-3674&volume=40&issue=3&spage=661&epage=668&date=2003&atitle=Weathered+rock+characterization+using+drilling+parametersen_HK
dc.identifier.emailYue, ZQ: yueqzq@hku.hken_HK
dc.identifier.emailTham, LG: hrectlg@hku.hken_HK
dc.identifier.emailLee, CF: leecf@hkucc.hku.hken_HK
dc.identifier.authorityYue, ZQ=rp00209en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.identifier.authorityLee, CF=rp00139en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1139/t03-007en_HK
dc.identifier.scopuseid_2-s2.0-0041823435en_HK
dc.identifier.hkuros82199-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0041823435&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume40en_HK
dc.identifier.issue3en_HK
dc.identifier.spage661en_HK
dc.identifier.epage668en_HK
dc.identifier.isiWOS:000183259700013-
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridSugawara, J=7006704127en_HK
dc.identifier.scopusauthoridYue, ZQ=7102782735en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridLaw, KT=7202563426en_HK
dc.identifier.scopusauthoridLee, CF=8068602600en_HK

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