Influence of Particle Shape on the Macroscopic and Mesolevel Mechanical Properties of Slip Zone Soil Based on 3D Scanning and 3D DEM

Table 2

mesoscopic parameters of DEM contact model.

Mesostructure parameter	Value
Density of fine grain soil particle/(kg/m^3)	2000
Effective modulus of fine granular soil/(Pa)	3.5 × 10^6
The tangential stiffness ratio of fine granular soil (ball)	1.2
Friction coefficient of fine granular soil (ball)	0.85
Rolling friction coefficient of fine granular soil (ball)	0.85
Density of coarse particles/(kg/m^3)	2700
Effective modulus of coarse particles/(Pa)	7.0 × 10^6
Tangential stiffness ratio of coarse particle method (clump)	1.5
Coarse particle friction coefficient (clump)	0.85
Coarse particle rolling friction coefficient (clump)	0.85
Effective modulus of wall/(Pa)	3.5 × 10^7
Friction coefficient between particles and wall	0