Rainfall Reliability Evaluation for Stability of Municipal Solid Waste Landfills on Slope

Table 4

The statistical properties of the parameters for reliability analysis.

Parameter type	Name	Mean (μ)	Coefficient of variation; (COV)	Standard deviation; (σ)
Geometry parameter	𝐻 (m)	20	0.01	0.2
	𝐿 (m)	30	0.01	0.3
	𝛼 (°)	60	0.01	0.6
	𝛽 (°)	30	0.01	0.3
Material parameter	𝛾1 (kN/m^3)	7	0.10	0.7
	𝛾2 (kN/m^3)	20	0.05	1.0
	𝑐1 (kPa)	34	0.20	6.8
	𝑐2 (kPa)	0.35	0.20	0.07
	𝜙1 (°)	35	0.10	3.5
	𝜙2 (°)	23	0.10	2.3
Rainfall parameter	𝐼 (mm/hr)	50	0.02	1.0
	𝑇 (hr)	36	0.01	0.36
	Rainfall pattern	1~7	—	—

Subscript 1 stands for solid waste; subscript 2 stands for geomembrane.