Numerical Simulation of Failure Behavior of Granular Debris Flows Based on Flume Model Tests

Table 1

Physical indices of the sand samples.

Sand type	Coefficient of uniformity (CU)	Coefficient of curvature (Cc)	Maximum dry density (ρ max)	Minimum dry density (ρ min)	Friction angle 𝜙 (°)
Medium sand	1.9	1.1	1.74 g/cm^3	1.48 g/cm^3	32.8
Fine sand	1.7	1.03	—	—	28.5