Experimental Study on Permeability Anisotropy of Unsaturated Compacted Loess

Table 4

Fitting parameters of the van Genuchten model.

Dry density ρd`(g/cm^3)	Fitting parameters
	θs (%)	θr (%)	α	b	R^2
1.40	46.76	11.8409	0.0818	1.7319	0.999
1.50	43.65	10.8369	0.0794	1.6211	0.999
1.60	40.48	9.6709	0.0743	1.5178	0.998
1.70	37.40	13.7245	0.0634	1.6202	0.999