Discrete-element investigation of granular debris-flow runup against slit structures
文献类型：会议论文
| 作者 | Du, Junhan1,2; Zhou, Gordon G.D.1,2 |
| 出版日期 | 2019 |
| 会议日期 | June 10, 2019 - June 13, 2019 |
| 会议地点 | Golden, CO |
| 关键词 | Dams Finite difference method Granular materials Hazards Numerical methods |
| DOI | 10.25676/11124/173210 |
| 页码 | 273-279 |
| 国家 | United states |
| 英文摘要 | Runup 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. |
| 源文献作者 | Access Limited Construction ; Association of Environmental and Engineering Geologists ; BGC Engineering Inc. ; et al. ; Geobrugg North America ; KANE Geotech Inc. |
| 产权排序 | 1 |
| 会议录 | Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment - Proceedings of the 7th International Conference on Debris-Flow Hazards Mitigation
 |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| ISBN号 | 9780578510828 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/33776]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Du, Junhan |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing, China 2.Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences(CAS), Chengdu, China; |
| 推荐引用方式 GB/T 7714 | Du, Junhan,Zhou, Gordon G.D.. Discrete-element investigation of granular debris-flow runup against slit structures[C]. 见:. Golden, CO. June 10, 2019 - June 13, 2019. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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