IMHE OpenIR  > 山地灾害与地表过程重点实验室
泥石流源区砾石土的粒度分形特征
Alternative TitleParticle Size Fractal Characteristics of the Gravel Soil in Original Area of Debris Flow Valleys
黄祺; 陈宁生; 朱云华; 卢阳; 吕立群
Corresponding Author陈宁生
2012
Source Publication山地学报
ISSN1008-2786
Volume30Issue:5Pages:578-584
Abstract以19条泥石流沟源区75个砾石土试样的颗分数据为基础,应用分形理论研究泥石流沟源区砾石土粒度组成特征,并对粒度分形特征与土体颗粒组成的关系进行了讨论。结果表明:1.粒度分布具有分形特征,以一重分形特征为主;2.一重分形特征表明土体各粒组的含量连续分布性较好;二重分形表明土体各粒组的含量连续分布相对较差,某一粒组含量存在突变;3.所研究的沟道平均粒度分维值Da在2.45~2.78间,且平均粒度分维值Da随粘粒含量Pc增加逐渐增大,具有一重分形特征的沟道二者满足关系式Da=0.108ln(Pc)+2.511。最后探讨了研究源区砾石土粒度分形特征的意义。
Other AbstractBased on the particle distribution of 75 gravel soil samples from 19 debris flow valleys, the fractal theory
is applied to study the characteristics of particle composition of gravel soil , the relationship between the characteristics
of fractal dimension and particle composition is discussed later. The results show that: 1. the gravel soil possesses
the characteristic of fractal,a nd mainly in one dimension fractal; 2. particles with one dimension fractal is fine
graded; particles with two dimension fractal is weak graded,and it emerges when there exists a particle abrupt; 3. the
average particle size fractal is between 2. 45 and 2. 78 in the 19 debris flow valleys,and it goes up with the increasing
of clay content. The relationship between particle size fractal in one dimension and clay content can be expressed
by: Da = 0. 108ln( pc) + 2. 511. At last, the significance of researching on the fractal characteristics of
gravel soil in original area of debris flow valleys is discussed.
Keyword泥石流 砾石土 分形 粒度组成
Indexed ByCSCD
Language中文
CSCD IDCSCD:4665142
Funding Organization“十二·五”国家科技支撑项目(2011BAK12B02)
Citation statistics
Cited Times:5[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5162
Collection山地灾害与地表过程重点实验室
Recommended Citation
GB/T 7714
黄祺,陈宁生,朱云华,等. 泥石流源区砾石土的粒度分形特征[J]. 山地学报,2012,30(5):578-584.
APA 黄祺,陈宁生,朱云华,卢阳,&吕立群.(2012).泥石流源区砾石土的粒度分形特征.山地学报,30(5),578-584.
MLA 黄祺,et al."泥石流源区砾石土的粒度分形特征".山地学报 30.5(2012):578-584.
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