IMHE OpenIR  > 山地灾害与地表过程重点实验室
Discrete-element investigation of granular debris-flow runup against slit structures
Language英语
Du, Junhan1,2; Zhou, Gordon G.D.1,2
2019
Source PublicationDebris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment - Proceedings of the 7th International Conference on Debris-Flow Hazards Mitigation
Author of SourceAccess Limited Construction ; Association of Environmental and Engineering Geologists ; BGC Engineering Inc. ; et al. ; Geobrugg North America ; KANE Geotech Inc.
Pages273-279
meeting7th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment
Conference DateJune 10, 2019 - June 13, 2019
Conference PlaceGolden, CO
CountryUnited states
Contribution Rank1
AbstractRunup of granular debris flows against slit dams on slopes is a complex process that involves deceleration, deposition and discharge. It is imperative to understand the runup mechanism and to predict the maximum runup height for the engineering designs and hazards mitigation. However, the interaction between granular flows and slit dams, which affects the runup height significantly, is still not well understood. In this study, a numerical investigation of granular debris flow impacting slit dams by the discrete element method (DEM) was then conducted. The influence of the opening size of slit dams characterizing by the relative post spacing R=b/d (b: post spacing; d: particle diameter) on runup height was studied. Numerical study illustrates that there is a critical value of relative post spacing (RC): within the critical value, the maximum runup height is insensitive to the relative post spacing; once b/d exceeds the critical value, the maximum runup height decreases rapidly as the relative post spacing increases. © 2019 Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment - Proceedings of the 7th International Conference on Debris-Flow Hazards Mitigation. All rights reserved.
KeywordDams Finite difference method Granular materials Hazards Numerical methods
DOI10.25676/11124/173210
ISBN9780578510828
URL查看原文
Indexed ByEI
Accession numberAccession number;20200408089034
Citation statistics
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33776
Collection山地灾害与地表过程重点实验室
Corresponding AuthorDu, Junhan
Affiliation1.Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences(CAS), Chengdu, China;
2.University of Chinese Academy of Sciences, Beijing, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Du, Junhan,Zhou, Gordon G.D.. Discrete-element investigation of granular debris-flow runup against slit structures[C]//Access Limited Construction, Association of Environmental and Engineering Geologists, BGC Engineering Inc., et al., Geobrugg North America, KANE Geotech Inc.,2019:273-279.
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