Sample Rocks Tests and Slope Stability Analysis of a Mine Waste Dump

Table 6

Calculation of physical and mechanical parameters of waste rocks.

Waste rocks from	For waste rocks of which grain size < 5 cm		Percentage of those waste rocks of which grain size < 5 cm (%)	Natural repose angle	Derived overall waste rocks in comprehensive grain size
	c (kPa)	φ (°)			c (kPa)	φ (°)
Pit J1 (natural)	40.74	41.8	66.57	37°	27.12	40.3
Pit J1 (saturated)	92.01	35.6			61.25	37.0
Pit J2 (natural)	66.22	38.4	60.29		39.92	37.9
Pit N2 (natural)	45.41	39.56	87.45		39.71	39.2
Pit N1 (natural)	58.00	44.6	73.25		42.48	42.7
Pit N3 (saturated)	54.00	42.4			39.55	37.0