IMHE OpenIR  > 山地灾害与地表过程重点实验室
A unified expression for grain size distribution of soils
Li Yong1,2; Huang Chengmin3; Wang Baoliang4; Tian Xiafei1,5; Liu Jingjing1,2
Corresponding AuthorLi Yong
2017
Source PublicationGEODERMA
ISSN0016-7061
EISSN1872-6259
Volume288Pages:105-119
SubtypeArticle
Abstract

Grain size distribution (GSD) is fundamental for soils and usually described by a set of graphic parameters (e.g., median size, kurtosis, skewness, uniform and curvature coefficient). Some probability distributions (e.g., lognormal and Weibull distribution) are used for special cases, but no general expression is available. In this paper we propose a general distribution form of P(D) = CD(-mu)exp(-D/Dc) for various soil materials, with P(D) the exceedance percentage and C,mu and D-c are parameters determined by the grain size frequency data. The power-law and exponential part of this expression respectively responds to the self-similar and random processes of grain fragmentation and accumulation in soil generation and evolution. The GSD parameters are distinct in soils and their variation reflects the changes in grain composition, such as the grain migration and segregation in landslides, avalanches, debris flows and sedimentary deposits. In addition, the GSD also fits the pore size of granular materials, confirming the grain-pore duality and suggesting an important role of the GSD expression in dynamics of soils and granular media in general. (C) 2016 Elsevier B.V. All rights reserved.

KeywordSoils Granular Materials Grain Size Distribution Soil Generation And Evolution Soil Dynamics
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.geoderma.2016.11.011
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordHYDRAULIC CONDUCTIVITY FUNCTION ; PARTICLE-SIZE ; WATER-RETENTION ; SEQUENTIAL FRAGMENTATION ; LOGNORMAL DISTRIBUTIONS ; SEDIMENT TRANSPORT ; ORGANIC-MATTER ; FRACTAL MODEL ; FREQUENCY-DISTRIBUTIONS ; UNSATURATED SOILS
Language英语
Quartile1区
TOP
WOS SubjectSoil Science
WOS IDWOS:000390622500010
Funding OrganizationNational Natural Science Foundation of China(41471011) ; West Light Foundation of The Chinese Academy of Sciences(Y5R2040040) ; Open Research Fund of the State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering(2015491011) ; Key Laboratory of Mountain Hazards and Surface Process, CAS(Y3R1340340)
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17957
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.Sichuan Univ, Dept Environm Sci & Engn, Chengdu 610065, Peoples R China
4.Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100081, 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,Huang Chengmin,Wang Baoliang,et al. A unified expression for grain size distribution of soils[J]. GEODERMA,2017,288:105-119.
APA Li Yong,Huang Chengmin,Wang Baoliang,Tian Xiafei,&Liu Jingjing.(2017).A unified expression for grain size distribution of soils.GEODERMA,288,105-119.
MLA Li Yong,et al."A unified expression for grain size distribution of soils".GEODERMA 288(2017):105-119.
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