Effects of Rapid Water-Level Fluctuations on the Stability of an Unsaturated Reservoir Bank Slope

Table 1

Mechanical parameters of landslide accumulation and slide zone.

Parameter	Symbol	Value		Unit
		Landslide accumulation zone	Slip zone
Cohesion of saturated soil	c	16.5	15	kPa
Internal friction angle of saturated soil	φ′	20	18	Degree
Internal friction angle caused by matrix suction	φ^b	16	16	Degree
Unit weight	γ	15.8	16	kN/m^3
Saturated unit weight	γsat	22	22	kN/m^3
Modulus of elasticity	E	17	15	MPa
Poisson’s ratio	μ	0.25	0.3	—