The Coupling Effect of Pore Water Pressure and Pore Water Gravity in Unsaturated Soils under Rainfall Condition and Its Influence on Slope Stability

Table 1

Permeability parameters and physical mechanics parameters of slope model.

Permeability parameters	Saturated infiltration coefficient (m/s)	Saturated volumetric water content (m^3/m^3)	Residual volumetric water content (m^3/m^3)	Storage coefficient (Pa^-1)	Parameters of Van Genuchten model
					α (m^-1)
	1E-6	0.5	0.04	5.2E-9	1.35	2	1.3
Physical mechanics parameters	Dry density of soils (kg/m^3)	Young’s modulus (kPa)	Poisson’s ratio	Cohesion (kPa)	Internal friction angle (°)
	1800	1E5	0.3	18	20