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Article: Three-dimensional stability evaluation of a preexisting landslide with multiple sliding directions by the strength-reduction technique

TitleThree-dimensional stability evaluation of a preexisting landslide with multiple sliding directions by the strength-reduction technique
Authors
KeywordsLandslide
Piles
Reinforcement
Stability evaluation
Strength-reduction technique
Issue Date2007
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, 2007, v. 44 n. 3, p. 343-354 How to Cite?
AbstractLandslide 1 is located on the right bank of the downstream side of the dam for Hongjiadu Hydropower Station in Guizhou Province, China. In view of its close proximity to important workings, the stability of the slide is of great concern. Ground investigation showed that the slide is potentially unstable and has two sliding directions. Reinforcement mainly by piles was proposed as the stabilization measure, but two key questions were raised during the design of the piles. (1) How could the stability of the slope be evaluated, as there are two major sliding directions? (2) How could the shear strength parameters of the slip band be determined, as it contains a significant proportion of coarse particles? In this paper, we demonstrate how these issues can be addressed by the strength-reduction technique. First, the strength parameters of the slip band are back-analyzed by assuming a factor of safety of unity. Second, the major sliding directions are determined by carrying out finite difference analyses. Third, two proposed stabilization schemes are evaluated and compared to demonstrate the versatility of the technique. The present study has demonstrated that the strength-reduction technique is a powerful tool for analyzing such problems. © 2007 NRC Canada.
Persistent Identifierhttp://hdl.handle.net/10722/150407
ISSN
2015 Impact Factor: 1.877
2015 SCImago Journal Rankings: 2.093
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDeng, JHen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorLee, CFen_HK
dc.contributor.authorYang, ZYen_HK
dc.date.accessioned2012-06-26T06:04:24Z-
dc.date.available2012-06-26T06:04:24Z-
dc.date.issued2007en_HK
dc.identifier.citationCanadian Geotechnical Journal, 2007, v. 44 n. 3, p. 343-354en_HK
dc.identifier.issn0008-3674en_HK
dc.identifier.urihttp://hdl.handle.net/10722/150407-
dc.description.abstractLandslide 1 is located on the right bank of the downstream side of the dam for Hongjiadu Hydropower Station in Guizhou Province, China. In view of its close proximity to important workings, the stability of the slide is of great concern. Ground investigation showed that the slide is potentially unstable and has two sliding directions. Reinforcement mainly by piles was proposed as the stabilization measure, but two key questions were raised during the design of the piles. (1) How could the stability of the slope be evaluated, as there are two major sliding directions? (2) How could the shear strength parameters of the slip band be determined, as it contains a significant proportion of coarse particles? In this paper, we demonstrate how these issues can be addressed by the strength-reduction technique. First, the strength parameters of the slip band are back-analyzed by assuming a factor of safety of unity. Second, the major sliding directions are determined by carrying out finite difference analyses. Third, two proposed stabilization schemes are evaluated and compared to demonstrate the versatility of the technique. The present study has demonstrated that the strength-reduction technique is a powerful tool for analyzing such problems. © 2007 NRC Canada.en_HK
dc.languageengen_US
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.subjectLandslideen_HK
dc.subjectPilesen_HK
dc.subjectReinforcementen_HK
dc.subjectStability evaluationen_HK
dc.subjectStrength-reduction techniqueen_HK
dc.titleThree-dimensional stability evaluation of a preexisting landslide with multiple sliding directions by the strength-reduction techniqueen_HK
dc.typeArticleen_HK
dc.identifier.emailTham, LG: hrectlg@hku.hken_HK
dc.identifier.emailLee, CF: leecf@hkucc.hku.hken_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.identifier.authorityLee, CF=rp00139en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1139/T06-115en_HK
dc.identifier.scopuseid_2-s2.0-34249692920en_HK
dc.identifier.hkuros212110-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34249692920&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume44en_HK
dc.identifier.issue3en_HK
dc.identifier.spage343en_HK
dc.identifier.epage354en_HK
dc.identifier.eissn1208-6010-
dc.identifier.isiWOS:000246960600008-
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridDeng, JH=36909889200en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridLee, CF=8068602600en_HK
dc.identifier.scopusauthoridYang, ZY=16403640900en_HK

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