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dc.contributor.authorMatsumoto, Naoki
dc.contributor.authorUchida, Taro
dc.contributor.authorSakurai, Wataru
dc.contributor.authorMatsubara, Tomoo
dc.contributor.authorOkuyama, Ryosuke
dc.contributor.authorHina, Junya
dc.contributor.authorSatofuka, Yoshifumi
dc.date.accessioned2019-08-21T15:36:40Z
dc.date.accessioned2022-02-02T14:38:48Z
dc.date.available2019-08-21T15:36:40Z
dc.date.available2022-02-02T14:38:48Z
dc.date.issued2019
dc.identifier.urihttps://hdl.handle.net/11124/173196
dc.identifier.urihttp://dx.doi.org/10.25676/11124/173196
dc.description.abstractThe purpose of this study is to clarify the influence of particle size distribution on the sediment capturing effect of open-type steel Sabo dams constructed in the sediment sheet flow section. First, we conducted a flume experiment in order to clarify the minimum boulder size contributing to blockage (flume gradient was 5 °). Based on the result, we set the particle size distribution for a flume experiment to clarify the effect of particle size distribution on the sediment capturing effect of the open-type steel Sabo dams in the sediment sheet flow section. We found that the minimum boulder size contributing to blockage is 1/3 to 1/2 of the individual grid width. We tested the volumetric effects of sediment larger than the minimum boulder size on sediment capturing efficiency through its contribution to blockage. In addition, we defined the value obtained by dividing the blockage-contributing sediment volume per unit area by the average particle size as "dimensionless sediment volume contributing to blockage". We found that this "dimensionless sediment volume contributing to blockage" and sediment capture rate have a logarithmic approximation relationship. Thus, this value can be expected as a new index for setting the individual grid width of the open-type steel Sabo dams.
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.subjectsediment sheet flow
dc.subjectflume experiment
dc.subjectopen-type steel Sabo dams
dc.subjectboulder size distribution
dc.subjectdimensionless sediment volume contributing to blockage
dc.titleFlume experiment on the influence of particle size distribution on sediment capturing efficiency of open-type steel Sabo dams
dc.typeText
dc.publisher.originalAssociation of Environmental and Engineering Geologists


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