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Conference Paper: Monitoring a preexisting landslide during reservoir filling

TitleMonitoring a preexisting landslide during reservoir filling
Authors
KeywordsMonitoring system
Preexisting landslide
Reactivation
Reservoir filling
The Three Gorges Project
Issue Date2005
Citation
Geotechnical Special Publication, 2005 n. 130-142, p. 2999-3008 How to Cite?
AbstractReservoir slope instability is a geological hazard induced by filling a reservoir and is generally believed to be caused mainly by unfavorable changes in the hydrodynamic condition in the slope during reservoir filling and/or operation. Although many cases of reservoir slope instability have been reported, very few field instrumentation data exist describing how the hydrodynamic condition changes and relates to landslide reactivation. Taking the opportunity of filling the Three Gorges Reservoir, a monitoring system was implemented to monitor the hydrodynamic and deformation response of a preexisting landslide, the Xietan landslide in Zigui County, Hubei Province, China. The monitoring items included reservoir level, water level in boreholes, pore water pressure, rainfall precipitation and deformation of borehole using inclinometers. The results indicate that there exist two phreatic surfaces in the slope before reservoir filling, the upper one is at around the top surface of the slip band and the lower one is in the bedrock. The less permeable slip band and sliding-disturbed zone constitute the relatively impermeable layer between the two surfaces. The stabilization effect of the reverse seepage during reservoir filling is temporary and limited. Reservoir filling is the main cause of reactivation.
Persistent Identifierhttp://hdl.handle.net/10722/152125
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorDeng, JHen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorDai, FCen_HK
dc.contributor.authorWei, JBen_HK
dc.contributor.authorMin, Hen_HK
dc.contributor.authorLoo, Hen_HK
dc.contributor.authorLee, CFen_HK
dc.date.accessioned2012-06-26T06:35:23Z-
dc.date.available2012-06-26T06:35:23Z-
dc.date.issued2005en_HK
dc.identifier.citationGeotechnical Special Publication, 2005 n. 130-142, p. 2999-3008en_US
dc.identifier.issn0895-0563en_HK
dc.identifier.urihttp://hdl.handle.net/10722/152125-
dc.description.abstractReservoir slope instability is a geological hazard induced by filling a reservoir and is generally believed to be caused mainly by unfavorable changes in the hydrodynamic condition in the slope during reservoir filling and/or operation. Although many cases of reservoir slope instability have been reported, very few field instrumentation data exist describing how the hydrodynamic condition changes and relates to landslide reactivation. Taking the opportunity of filling the Three Gorges Reservoir, a monitoring system was implemented to monitor the hydrodynamic and deformation response of a preexisting landslide, the Xietan landslide in Zigui County, Hubei Province, China. The monitoring items included reservoir level, water level in boreholes, pore water pressure, rainfall precipitation and deformation of borehole using inclinometers. The results indicate that there exist two phreatic surfaces in the slope before reservoir filling, the upper one is at around the top surface of the slip band and the lower one is in the bedrock. The less permeable slip band and sliding-disturbed zone constitute the relatively impermeable layer between the two surfaces. The stabilization effect of the reverse seepage during reservoir filling is temporary and limited. Reservoir filling is the main cause of reactivation.en_HK
dc.languageengen_US
dc.relation.ispartofGeotechnical Special Publicationen_HK
dc.subjectMonitoring systemen_HK
dc.subjectPreexisting landslideen_HK
dc.subjectReactivationen_HK
dc.subjectReservoir fillingen_HK
dc.subjectThe Three Gorges Projecten_HK
dc.titleMonitoring a preexisting landslide during reservoir fillingen_HK
dc.typeConference_Paperen_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.scopuseid_2-s2.0-17044433799en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-17044433799&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.issue130-142en_HK
dc.identifier.spage2999en_HK
dc.identifier.epage3008en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridDeng, JH=7402612983en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridDai, FC=7102055666en_HK
dc.identifier.scopusauthoridWei, JB=7403085330en_HK
dc.identifier.scopusauthoridMin, H=34973198300en_HK
dc.identifier.scopusauthoridLoo, H=8345992100en_HK
dc.identifier.scopusauthoridLee, CF=8068602600en_HK

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