IMHE OpenIR  > 山地灾害与地表过程重点实验室
A scaling distribution for grain composition of debris flow
Li Yong1,2; Zhou Xiaojun1,3,4; Su Pengcheng1,2,3; Kong Yingde2,3; Liu Jingjing1,2,3
Corresponding Author李勇
2013
Source PublicationGEOMORPHOLOGY
ISSN0169-555X
EISSN1872-695X
Volume192Pages:30-42
SubtypeArticle
AbstractDebris 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.
KeywordGrain Composition Scaling Distribution Distribution Parameters Debris Flow
Subject Area自然地理学 ; 岩土力学 ; 灾害学
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.geomorph.2013.03.015
WOS Subject ExtendedPhysical Geography ; Geology
Indexed BySCI
WOS KeywordPARTICLE-SIZE DISTRIBUTION ; LONG RUNOUT LANDSLIDES ; SELF-LUBRICATION ; SOIL POROSITY ; MODEL ; FRAGMENTATION ; DEPOSITS ; MASS ; CLASSIFICATION ; SIMULATION
Language英语
Quartile2区
TOP
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000319644300003
Funding OrganizationChinese Academy of Sciences(KZZD-EW-05-01) ; National Natural Science Foundation of China(40771010) ; National Key Technology Research and Development Program(2012BAK10B04)
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6666
Collection山地灾害与地表过程重点实验室
Affiliation1.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
First 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
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.
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