Table 2

Stability factors γ H/c for slopes in geomaterial with φ = 30°

B/HMechanismSlope inclination angle β
45°60°75°90°
0·5Wedgea190·7568·3438·8826·62
M-Cb121·8146·5127·7120·24
T-Cc119·8445·3126·8519·24d
0·6Wedgea172·2060·8734·3123·27
M-Cb108·3839·4523·7216·34
T-Cc105·5237·6821·6815·18d
0·8Wedgea150·0151·8228·7419·18
M-Cb95·7433·1718·4912·43
T-Cc92·5231·1616·8911·28
1Wedgea137·5846·6625·5416·81
M-Cb89·5130·2816·5810·89
T-Cc85·9828·2014·909·39
1·5Wedgea122·8940·4021·5913·85
M-Cb82·5027·0714·469·24
T-Cc78·4724·7812·697·69
2Wedgea116·8237·7219·8712·54
M-Cb79·4725·7913·568·55
T-Cc75·1723·2911·726·88
3Wedgea112·0235·5518·4511·44
M-Cb76·8724·5312·777·94
T-Cc72·1421·9410·856·21
5Wedgea109·3834·3217·6310·79
M-Cb74·6823·5912·197·50
T-Cc69·8920·9410·225·71
2DM-Cb71·8822·3911·426·92
T-Cc66·7619·579·355·12
a

Wedge mechanism

b

Right circular cone mechanism and M-C strength envelope

c

Right circular cone mechanism with tension cut-off strength envelope

d

Face failure mechanism

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