A scaling distribution for grain composition of debris flow
文献类型：期刊论文
| 作者 | Li Yong1,2 ; Zhou Xiaojun1,3,4; Su Pengcheng1,2,3; Kong Yingde2,3; Liu Jingjing1,2,3
|
| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2013-06-15 |
| 卷号 | 192页码:30-42 |
| 关键词 | Grain composition Scaling distribution Distribution parameters Debris flow |
| ISSN号 | 0169-555X |
| 通讯作者 | 李勇 |
| 英文摘要 | Debris flow is composed of a wide range of grains. This study proposes a general form of grain size distribution, P (D) = CD(-mu)exp (-D / D-c), which is satisfied well by various debris flows and by soils and sediments related to debris flows. The parameters. mu and D-c are found to be related to debris-flow density in power laws. In particular, //represents some characteristic porosity of soil in a natural condition and controls the variation of soils in developing debris flows; and D-c defines a characteristic size governing the sediment concentration. Field observations indicate that debris flows fall into a certain range of parameters (mu, D-c). Almost all debris flows have mu < 0.10, and most debris flows of high density have mu < 0.05. Moreover, experiments show that the exponent p increases during soil failures under rainfall, providing an index varying in the course of debris flow initiation. Finally, grain size distribution is used to evaluate the properties of debris flows in different regions. The distribution provides a simple but quantitative method of predicting a potential flow through the source soils. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 自然地理学 ; 岩土力学 ; 灾害学 |
| 类目[WOS] | Geography, Physical ; Geosciences, Multidisciplinary |
| 研究领域[WOS] | Physical Geography ; Geology |
| 关键词[WOS] | PARTICLE-SIZE DISTRIBUTION ; LONG RUNOUT LANDSLIDES ; SELF-LUBRICATION ; SOIL POROSITY ; MODEL ; FRAGMENTATION ; DEPOSITS ; MASS ; CLASSIFICATION ; SIMULATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000319644300003 |
| 公开日期 | 2013-12-20 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6666]  |
| 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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.China Merchants Chongqing Commun Res & Design Ins, Chongqing 400067, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Yong,Zhou Xiaojun,Su Pengcheng,et al. A scaling distribution for grain composition of debris flow[J]. GEOMORPHOLOGY,2013,192:30-42. |
| APA | Li Yong,Zhou Xiaojun,Su Pengcheng,Kong Yingde,&Liu Jingjing.(2013).A scaling distribution for grain composition of debris flow.GEOMORPHOLOGY,192,30-42. |
| MLA | Li Yong,et al."A scaling distribution for grain composition of debris flow".GEOMORPHOLOGY 192(2013):30-42. |
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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