Fractal Characteristics of the Seepage Erosion Process in Porous Soil

Table 2

The mass fractal dimensions and scale-invariant intervals in different experimental soils.

Soil number	Soil type	Scale-invariant interval		Fine content of scale-invariant interval (%)	Mass fractal dimension	Correlation coefficient
		Lower limit (mm)	Upper limit (mm)
1	Sandy gravel	0.25	20	91.75	2.84	0.94
2	Sandy gravel	0.25	20	88.83	2.65	0.95
3	Sandy gravel	0.25	20	87.70	2.61	0.99
4	Sandy gravel	0.25	20	87.17	2.57	0.98
5	Coarse-grained sand	0.25	10	68.98	2.87	0.99
6	Coarse-grained sand	0.25	10	68.54	2.84	0.94
7	Fine-grained sand	0.25	5	57.42	2.90	0.79
8	Fine-grained sand	0.25	5	65.49	2.99	0.91