Instability Analysis of a Low-Angle Low-Expansive Soil Slope under Seasonal Wet-Dry Cycles and River-Level Variations

Table 3

Soil parameters for the slope stability analysis.

Situation	Stratum	Cohesion	Friction angle	Unit weight	Poisson ratio
		c (kPa)	φ (°)	γ (kN/m^3)
The first winter	1	37.9	17.2	19.0	0.3
	2	33.6	19.0	19.8	0.3
	3	49.1	22.3	19.9	0.3
The first summer	1	32.3	14.3	19.0	0.3
	2	30.8	14.6	19.8	0.3
	3	32.0	15.1	19.9	0.3
The third summer	1	25.8	12.9	19.0	0.3
	2	21.6	11.7	19.8	0.3
	3	28.8	13.5	19.9	0.3
The sixth summer	1	22.6	12.2	19.0	0.3
	2	15.4	11.0	19.8	0.3
	3	25.6	12.8	19.9	0.3
The ninth summer	1	19.4	11.5	19.0	0.3
	2	12.3	10.2	19.8	0.3
	3	22.4	12.0	19.9	0.3