膨胀土裂隙结构的分形特征及其意义

The fractal characteristics of fractures in expansion soil and its significance

依据分形理论，研究了膨胀土裂隙结构的分形特征，分析了膨胀土裂隙网络分维和裂隙面分维的力学效应。结果表明，膨胀土裂隙网络和裂隙形态特征具有很好的统计自相似性，分维定量地描述了膨胀土裂隙的力学效应特征，同膨胀土的抗剪强度指标有很好的相关性。在此基础上，探讨了分维的研究意义。

In this paper, the fractal characteristics of fissure structure in expansion soil are studied based on fractal theory. The mechanical effect of fractal dimensions of fissure network and fissure surface in expansion soil is analyzed. The results show that fissure network and fissure surface of expansion soil have a high self similarity in statistics .Fractal dimension can describe quantitatively the mechanical effect of fissure structure of expansion soil, and it has a close relationship between fractal dimensions and indexes of shear strength of expansion soil. At last, the significance of research is discussed.