Study on the Influence of Various Rainfall Types on the Stability of High and Steep Slopes

Table 1

Mechanical parameters of soil.

Soil layer	Unit weight (kN/m^3)	Permeability coefficient (mm/h)	Cohesion (kPa)	Internal friction angle (°)	Poisson’s ratio	Saturated volume water content
Siltstone	18	20	20	28	0.3	0.45