[1]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,(05):578.
　HUANG Qi,CHEN Ningsheng,ZHU Yunhua,et al.Particle Size Fractal Characteristics of the Gravel Soil in Original Area of Debris Flow Valleys[J].Mountain Research,2012,(05):578.
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泥石流源区砾石土的粒度分形特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2012年05期
页码:
578
栏目:
山地学报
出版日期:
2012-01-01

文章信息/Info

Title:
Particle Size Fractal Characteristics of the Gravel Soil in Original Area of Debris Flow Valleys
作者:
黄祺;陈宁生;朱云华;卢阳;吕立群;
1.中国科学院水利部成都山地灾害与环境研究所，四川 成都610041；
2.中国科学院山地灾害与地表过程重点实验室，四川 成都610041；
3.中国科学院研究生院，北京100049；
4.西南石油大学，四川 成都610500
Author(s):
　　HUANG Qi; CHEN Ningsheng; ZHU Yunhua; LU Yang; L Liqun
1. Institute of Mountain Hazards and Environment，Chinese Academy of Sciences，Chengdu 610041，China；
2. Key Lab of Mountain Hazards and Surface Processes，Chinese Academy of Sciences，Chengdu 610041 China；
3. Graduate University of Chinese Academy of Sciences，Beijing 100049，China；
4. Southwest Petroleum University，Chengdu 610500，China
关键词:
泥石流; 砾石土; 分形; 粒度组成
Keywords:
debris flow; gravel soil; fractal; particle composition
分类号:
P642.1,TU41
文献标志码:
A
摘要:
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。
Abstract:
Based 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，and 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.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2012-04-05；改回日期(Accepted) : 2012-04-28。
基金项目（Foundation item）：“十二·五”国家科技支撑项目（2011BAK12B02）。\[“12th Five-Year Plan” National Science & Technology Support Plan Project(2011BAK12B02).\]
作者简介（Biography）：黄祺(1986-)，男，四川武胜人，硕士研究生，主要研究方向为山地灾害形成机理及防治技术。\[Huang Qi (1986-)，male，born in Wusheng，Sichuan，Graduate student，Majoring in mechanism of mountain hazards and control technique.\] E-mail:hswlj@sina.com *
通讯作者(Corresponding author): 陈宁生（1965-），男，研究员，博导，研究方向为山地灾害形成机理与防治。\[Chen Ningsheng (1965-)，male，professor，doctoral tutor，majoring in mechanism of mountain hazards and control technique.\] E-mail：chennsh@imde.ac.cn
更新日期/Last Update: 1900-01-01