3D Numerical Simulation of Landslides for the Full High Waste Dump Using SPH Method

Table 3

Content of each grade of grains in the dump soils [9].

	Grain group classification	Grain size range (d/mm)	Content (%)
Big grain	Boulder (rock)	d > 200	5.50
	Pebble (gravel)	200 > d > 60	17.72
Coarse grain	Coarse gravel	60 > d > 20	27.15
	Medium gravel	20 > d > 5	27.55
	Fine gravel	5 > d > 2	10.90
	Coarse sand	2 > d > 0.5	4.49
	Medium sand	0.5 > d > 0.25	2.89
	Fine sand	0.25 > d > 0.075	2.00
Fine grain	Silt grain	0.075 > d > 0.005	1.00
	Clay grain	0.005 > d	0.80

By courtesy of Nanfen Open-pit Mine Group and Institute of Rock and Soil Mechanics, Chinese Academy of Sciences.