File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Conference Paper: An integrated analysis framework for predicting surface runoff, infiltration, and slope stability

TitleAn integrated analysis framework for predicting surface runoff, infiltration, and slope stability
Authors
Issue Date2014
PublisherAmerican Society of Civil Engineers.
Citation
The 2014 Annual Congress of the Geo-Institute (Geo-Congress 2014), Atlanta, GA, USA, 23-26 February 2014. In Geotechnical Special Publications, 2014, n. 234, p. 2588-2599 How to Cite?
AbstractBuildup of pore-water pressure due to water infiltration during an extreme rainfall event is a major cause of many landslides worldwide. A competent simulation model can greatly contribute to the reliable landslide prediction and prevention. Infiltration is transient, dependent on subsurface conditions, surface runoff characteristics, and rainfall hyetograph. However, conventional analysis commonly relies on the assumptions of infiltration rate and/or water table location, which cannot be determined reliably a priori. In this paper, an integrated analysis framework for prediction of surface runoff, infiltration, pore water pressure, and geomechanical stresses is presented. A fully coupled groundwater-surface water interaction numerical model, HydroGeoSphere, is used to compute the transient surface runoff and subsurface pore-water pressure responses due to rainfall simultaneously without the need to make assumptions about the infiltration rate. Therefore, rainfall hyetograph can be used directly as an input parameter in the numerical model. The computed pore-pressure as a function of time is used as input to slope stability analysis using finite element methods. A simplified example based on a full-scale instrumented slope in Hong Kong is presented to illustrate the integrated framework. The subsurface profile, soil properties, and boundary conditions were taken from the data obtained from a site investigation. A range of rainfall conditions was analyzed to evaluate the validity of some of the assumptions commonly made in conventional analysis approach.
DescriptionCongree Theme: Geo-characterization and modeling for sustainability
Section: Managing Geosystems through Monitoring, Health Assessment, and Lifecycle Prediction
Technical Paper
Persistent Identifierhttp://hdl.handle.net/10722/196402
ISSN

 

DC FieldValueLanguage
dc.contributor.authorGuan, Jen_US
dc.contributor.authorMok, WCMen_US
dc.contributor.authorYeung, ATCen_US
dc.date.accessioned2014-04-07T03:26:05Z-
dc.date.available2014-04-07T03:26:05Z-
dc.date.issued2014en_US
dc.identifier.citationThe 2014 Annual Congress of the Geo-Institute (Geo-Congress 2014), Atlanta, GA, USA, 23-26 February 2014. In Geotechnical Special Publications, 2014, n. 234, p. 2588-2599en_US
dc.identifier.issn0895-0563-
dc.identifier.urihttp://hdl.handle.net/10722/196402-
dc.descriptionCongree Theme: Geo-characterization and modeling for sustainability-
dc.descriptionSection: Managing Geosystems through Monitoring, Health Assessment, and Lifecycle Prediction-
dc.descriptionTechnical Paper-
dc.description.abstractBuildup of pore-water pressure due to water infiltration during an extreme rainfall event is a major cause of many landslides worldwide. A competent simulation model can greatly contribute to the reliable landslide prediction and prevention. Infiltration is transient, dependent on subsurface conditions, surface runoff characteristics, and rainfall hyetograph. However, conventional analysis commonly relies on the assumptions of infiltration rate and/or water table location, which cannot be determined reliably a priori. In this paper, an integrated analysis framework for prediction of surface runoff, infiltration, pore water pressure, and geomechanical stresses is presented. A fully coupled groundwater-surface water interaction numerical model, HydroGeoSphere, is used to compute the transient surface runoff and subsurface pore-water pressure responses due to rainfall simultaneously without the need to make assumptions about the infiltration rate. Therefore, rainfall hyetograph can be used directly as an input parameter in the numerical model. The computed pore-pressure as a function of time is used as input to slope stability analysis using finite element methods. A simplified example based on a full-scale instrumented slope in Hong Kong is presented to illustrate the integrated framework. The subsurface profile, soil properties, and boundary conditions were taken from the data obtained from a site investigation. A range of rainfall conditions was analyzed to evaluate the validity of some of the assumptions commonly made in conventional analysis approach.-
dc.languageengen_US
dc.publisherAmerican Society of Civil Engineers.en_US
dc.relation.ispartofGeotechnical Special Publicationsen_US
dc.rightsGeotechnical Special Publications. Copyright © American Society of Civil Engineers.-
dc.titleAn integrated analysis framework for predicting surface runoff, infiltration, and slope stabilityen_US
dc.typeConference_Paperen_US
dc.identifier.emailYeung, ATC: yeungat@hku.hken_US
dc.identifier.authorityYeung, ATC=rp00203en_US
dc.identifier.doi10.1061/9780784413272.250-
dc.identifier.hkuros228496en_US
dc.identifier.issue234-
dc.identifier.spage2588en_US
dc.identifier.epage2599en_US
dc.publisher.placeUnited Statesen_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats