摘要
通过对我国各地膨胀土的颗粒分析资料的研究，发现膨胀土的颗粒分布具有分形特征，其分维介于２．０～３．０之间，不同成因的膨胀土颗粒分布的分维不同．为研究膨胀土的成就提供了一个新的定量的方法．文中首次运用一个新方法来确定膨胀土的孔隙表面的分维，在平均曲率半径介于２～１００μｍ范围内，饱和膨胀土的孔隙表面的分维为２．６７，而干膨胀土的孔隙表面的分维为２．７．最后。
Through analysis of grain distribution of expansive soils in China, the fractal dimension of soil grain size distribution is obtained. The fractal dimension ranges from 2 0 to 3 0. The fractal dimension of the distribution is different for different genesis of expansive soils, and that offers a new method to study the genesis of expansive soils. A new approach to the determination of pore space fractal dimension is applied for the first time. Finally, the fractal dimension of pore distribution is used to calculate soil water characteristic curves.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1997年第1期18-23,共6页
Journal of Hohai University(Natural Sciences)
关键词
膨胀土
分形结构
分维
中国
expansive soil
fractal structure
fractal dimension
