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

Table 12

Calculation results using limit equilibrium method.

Year	Conditions	FOS of circular sliding (simplified bishop)		FOS of sliding contact between foundation and waste rock layer (Morgenstern–Price)
		FOS of partial slope	FOS of overall slope
2015	I	1.408	1.402	1.491
	II	1.120	1.115	1.198
	III	1.144	1.189	1.102
2016	I	1.404	1.401	1.481
	II	1.119	1.114	1.194
	III	1.250	1.188	1.059
2017	I	1.407	1.401	1.490
	II	1.119	1.114	1.198
	III	1.261	1.079	1.146
2018	I	1.410	1.400	1.511
	II	1.122	1.114	1.211
	III	1.135	1.130	1.033
2023	I	1.479	1.447	1.578
	II	1.180	1.153	1.272
	III	1.106	1.244	1.122
2028	I	1.462	1.455	1.676
	II	1.168	1.157	1.364
	III	1.160	1.247	1.149
2036	I	1.468	1.455	1.769
	II	1.173	1.150	1.441
	III	1.134	1.231	1.147