| 泥石流粒度分维值的初步研究 |
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| 引用本文： | 倪化勇,刘希林.泥石流粒度分维值的初步研究[J].水土保持研究,2006,13(1):89-91. |
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| 作者姓名： | 倪化勇 刘希林 |
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| 作者单位： | 1. 中国科学院成都山地灾害与环境研究所,成都,610041;中国科学院研究生院,北京,100039
2. 中国科学院成都山地灾害与环境研究所,成都,610041 |
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| 基金项目： | 中国科学院资助项目;四川省科研项目 |
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| 摘 要： | 运用分形理论,提出泥石流粒度分维的概念及其计算方法。根究泥石流粒度分析结果,分别求解泥石流形成区原始土体粒度分维、流体粒度分维和堆积物粒度分维,并分析它们与泥石流体颗粒机械组成和流体性质方面的相互关系。泥石流粒度分维值为泥石流形成、运动和堆积特征以及流体性质提供了可供参考的指示意义。
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| 关 键 词： | 泥石流 分形特征 粒度分维 |
| 文章编号： | 1005-3409（2006）01-0089-03 |
| 收稿时间： | 2005-01-23 |
| 修稿时间： | 2005年1月23日 |
A Preliminary Study on Debris Flow Grain-size Fractal Dimension |
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| NI Hua-yong,LIU Xi-lin.A Preliminary Study on Debris Flow Grain-size Fractal Dimension[J].Research of Soil and Water Conservation,2006,13(1):89-91. |
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| Authors: | NI Hua-yong LIU Xi-lin |
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| Institution: | 1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041 ,China ; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | According to fractal theory,the definition and calculating method of grain-size fractal dimension for debris flow were presented,and grain-size fractal dimensions of the original grains in the source area,grains in debris flow fluid and grains in accumulation area were respectively analyzed in detail.On the basis of fractal feature of the grains and the relationship between grain-size fractal dimension and grain composition,characteristics of debris flow,it is presents that the grain-size fractal dimension of debris flow can reflect the volume of the viscous grains,indicate the viscosity characteristics of debris flow,and the resistance property.The critical grain-size fractal dimension values might provide some useful indications for debris flow researches. |
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| Keywords: | debris flow fractal feature grain-size fractal dimension |
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