Characteristics of Soil Fractal Dimension and Its Correlation with Soil Mechanical Properties in Karst Area of Central Guizhou Province

SUN Quan-zhong; GAO Hua-duan; NING Mao-qi; YUAN Yong; NIU Ming

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Characteristics of Soil Fractal Dimension and Its Correlation with Soil Mechanical Properties in Karst Area of Central Guizhou Province

- Characteristics of Soil Fractal Dimension and Its Correlation with Soil Mechanical Properties in Karst Area of Central Guizhou Province
- Bulletin of Soiland Water Conservation Vol. 30, Issue 4, Pages: 53-56(2011)
- 作者机构：
  
  1. 贵州省水土保持技术咨询研究中心
  2. 贵州大学林学院,贵州,贵阳,550025
  3. 北京林业大学,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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SUN Quan-zhong, GAO Hua-duan, NING Mao-qi, et al. Characteristics of Soil Fractal Dimension and Its Correlation with Soil Mechanical Properties in Karst Area of Central Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 53-56.
DOI：

SUN Quan-zhong, GAO Hua-duan, NING Mao-qi, et al. Characteristics of Soil Fractal Dimension and Its Correlation with Soil Mechanical Properties in Karst Area of Central Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 53-56. DOI：

摘要

在黔中喀斯特地区通过野外调查及室内试验的方法研究了土壤机械分维特征及其与土壤黏聚力c、内摩擦角φ及土壤紧实度的关系。结果表明，研究区土壤分形维数D一般在2.80~2.93之间，当直径小于0.002 mm的土壤颗粒含量超过50%时，其分形维数则大于2.90。相关性分析表明，土壤机械分维与土壤黏聚力、土壤紧实度呈极显著正相关，土壤黏聚力和紧实度随机械分维增大而增大；土壤机械分维与内摩擦角呈极显著负相关，土壤内摩擦角随机械分维增大而减小。

Abstract

The characteristics of soil fractal dimension and its correlation with soil mechanical properties such as soil cohesionc

soil internal friction angle U and soil compaction in Karst area of central Guizhou Province were studied by means of field investigation and indoor experiments.The results revealed that the fractal dimension of soil in the research area w as usually between 2.80 and 2.93

while the fractal dimension would be greater than 2.90 if t he content of soil particle with diameter less than 0.002 mm exceeded 50%.Correlation analysis results showed that soil fractal dimension was positively correlated to soil cohesion and soil compaction

and the latter two increased with the increase of soil fractal dimension.How ever the soil fractal dimension was negatively correlated to internal friction angle

which decreased with the increase of fractal dimension.

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