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dc.contributor.authorChoi, Shin-Kyu
dc.contributor.authorKwon, Tae-Hyuk
dc.contributor.authorLee, Seung-Rae
dc.contributor.authorPark, Joon-Young
dc.date.accessioned2019-08-02T17:12:14Z
dc.date.accessioned2022-02-02T14:38:50Z
dc.date.available2019-08-02T17:12:14Z
dc.date.available2022-02-02T14:38:50Z
dc.date.issued2019
dc.identifier.urihttps://hdl.handle.net/11124/173124
dc.identifier.urihttp://dx.doi.org/10.25676/11124/173124
dc.description.abstractDebris flows can travel at rapid velocities and can cause economic and societal damages. Accordingly, barriers that can dissipate the energy of debris flows are frequently installed as a mitigation measure. However, the effect of barriers on debris-flow behavior is not fully understood. In this study, we used DAN3D to investigate the interactions between a debris flow and barriers, and evaluate the effect of barrier location on debris-flow velocity and volume. We chose a study site in Seoul, Korea, where a debris- flow event occurred in 2011. At the site, we numerically installed a closed-type barrier at four different locations along the flow path in the watershed. We then simulated the debris flow while monitoring debris-flow velocity and volume. The barriers decreased the velocity and volume of the debris flow compared to a simulation with no barrier. In particular, installation of the barrier at the upstream portions of watersheds resulted in the greatest reduction in velocity. Installation of the barrier at downstream portions of watersheds resulted in the greatest deposition of volume. These results contribute to a better understanding of debris-flow behavior associated with the installed barriers as a mitigation measure, and can be used for optimum and efficient design of the debris-flow barriers.
dc.format.mediumborn digital
dc.format.mediumproceedings (reports)
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartofSeventh International Conference on Debris-Flow Hazards Mitigation - Proceedings
dc.relation.ispartofAssociation of Environmental and Engineering Geologists; special publication 28
dc.rightsCopyright of the original work is retained by the authors.
dc.sourceContained in: Proceedings of the Seventh International Conference on Debris-Flow Hazards Mitigation, Golden, Colorado, USA, June 10-13, 2019, https://hdl.handle.net/11124/173051
dc.subjectdebris flows
dc.subjectdebris-flow barrier
dc.subjectlocation
dc.subjectvelocity
dc.subjectvolume
dc.subjectentrainment
dc.titleRoles of barrier location for effective debris flow mitigation: assessment using DAN3D
dc.typeText
dc.publisher.originalAssociation of Environmental and Engineering Geologists


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