Stability Analysis of Dump Slope: Taking Zijinshan Open-Pit Mine as an Example

Table 3

Physical and mechanical parameters of the bulk under the strength reduction method.

Strength reduction factor	Bulk mechanics parameters
	New dispersion layer		Solidified bulk layer
	Cohesion c (KPa)	Internal friction angle φ (°)	Cohesion c (KPa)	Internal friction angle φ (°)
F = 1	21	27	25	28
F = 1.2	17.5	23	20.8	24
F = 1.4	15	20	17.8	20.8
F = 1.6	13.1	17.7	15.6	18.4
F = 1.8	11.7	15.8	13.9	16.5
F = 1.9	11	15	13.2	15.6