Prediction of impact force of debris flows based on distribution and size of particles
文献类型：期刊论文
| 作者 | He, Siming1,2,3 ; Liu, Wei1,2; Li, Xinpo1,2
|
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 75期号:4页码:DOI 10.1007/s12665-015-5180-2 |
| 关键词 | Debris flow Solid-liquid two-phase flow Gradation of particles Impact force |
| ISSN号 | 1866-6280 |
| 通讯作者 | Liu, Wei |
| 英文摘要 | A debris flow is a solid-liquid two-phase flow; the composition and gradation of the particles within have a significant influence on its impact force. This paper proposes a new method for studying the impact force according to the composition of a debris flow based on analysis of existing calculation methods. The impact force is divided into three parts: (1) the dynamic pressure provided by the debris flow slurry, which is composed of fine particles and water; (2) the impact force of coarse particles; and (3) the impact force of boulders. This paper analyzes the established formulations used to calculate the impact force by using hydrodynamic theory and contact mechanics to propose a debris flow impact model according to the debris flow type. The results show that the impact force is closely related to the solid volume fraction, composition of particle materials, motion velocity, and depth of a debris flow. Among all the components of the impact force, the boulder impact force is the largest followed by the impact force of coarse particles; the dynamic pressure is minimal. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 关键词[WOS] | SPHERES ; COEFFICIENT ; RESTITUTION ; CHINA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000371393400021 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/15147]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Chengdu, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Siming,Liu, Wei,Li, Xinpo. Prediction of impact force of debris flows based on distribution and size of particles[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(4):DOI 10.1007/s12665-015-5180-2. |
| APA | He, Siming,Liu, Wei,&Li, Xinpo.(2016).Prediction of impact force of debris flows based on distribution and size of particles.ENVIRONMENTAL EARTH SCIENCES,75(4),DOI 10.1007/s12665-015-5180-2. |
| MLA | He, Siming,et al."Prediction of impact force of debris flows based on distribution and size of particles".ENVIRONMENTAL EARTH SCIENCES 75.4(2016):DOI 10.1007/s12665-015-5180-2. |
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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