| A debris-flow impact pressure model combining material characteristics and flow dynamic parameters | |
Tang, Jin-bo; Hu, Kai-heng1
| |
| Corresponding Author | Hu, Kai-heng(khhu@imde.ac.cn) |
| 2018 | |
| Source Publication | JOURNAL OF MOUNTAIN SCIENCE
 |
| ISSN | 1672-6316 |
| EISSN | 1993-0321 |
| Volume | 15Issue:12Pages:2721-2729 |
| Subtype | Article |
| Contribution Rank | 1 |
| Abstract | Impact force is a crucial factor to be considered in debris-resisting structure design. The impact of debris flow against a structural barrier depends not only on the flow dynamics but also on the barrier material. Based on the structural vibration equation and energy conservation law, a simple model for calculating debris-flow impact pressure is proposed, which includes the mechanical impedance of the material, debris-flow velocity and Froude number. Twenty-five impact tests have been conducted using different kinds of materials: steel, black granite, white granite, marble and polyvinyl chloride (PVC) board, and the ratio of the maximum impact time to the vibration period of the structure is determined for the model. It is found that the ratio's square root shows a linear relationship with the material solid Froude number. This indicates that the impedance of the structures plays an important role in the flow-barrier interaction. Moreover, the debrisflow impact force is found to decrease with the travel time of the elastic stress wave though the structures. |
| Keyword | Debris flows Impact pressure Dynamical responses Mechanical impedance |
| DOI | 10.1007/s11629-018-5114-z |
| Indexed By | SCI |
| WOS Keyword | JIANGJIA RAVINE ; PARTICLE-SIZE ; FORCE |
| Language | 英语 |
| Quartile | 4区 |
| Funding Project | National Natural Science Foundation of China[41771045] |
| TOP | 否 |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000453393800013 |
| Funding Organization | National Natural Science Foundation of China |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/24740 |
| Collection | 山地灾害与地表过程重点实验室 |
| Corresponding Author | Hu, Kai-heng |
| Affiliation | 1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China; 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China |
| 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 | Tang, Jin-bo,Hu, Kai-heng. A debris-flow impact pressure model combining material characteristics and flow dynamic parameters[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(12):2721-2729. |
| APA | Tang, Jin-bo,&Hu, Kai-heng.(2018).A debris-flow impact pressure model combining material characteristics and flow dynamic parameters.JOURNAL OF MOUNTAIN SCIENCE,15(12),2721-2729. |
| MLA | Tang, Jin-bo,et al."A debris-flow impact pressure model combining material characteristics and flow dynamic parameters".JOURNAL OF MOUNTAIN SCIENCE 15.12(2018):2721-2729. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| A debris-flow impact（600KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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