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LIST OF TABLES
Table 2.1: ANCOLD consequence categories (ANCOLD, 2012) ........................................... 18
Table 3.1: ANCOLD recommended factors of safety for tailings dams (ANCOLD, 2012). ... 24
Table 4.1: Summary of slope stability charts by Abramson (2002) ......................................... 35
Table 4.2: Limit equilibrium methods ...................................................................................... 47
Table 5.1: Soil properties ......................................................................................................... 51
Table 5.2: Case 1 factor of safety from stability charts ............................................................ 52
Table 5.3: Case 1 factor of safety from Case 1 Spreadsheet and SLOPE/W for undrained
conditions ................................................................................................................................. 52
Table 5.4: Case 1 factor of safety from Case 1 Spreadsheet and SLOPE/W for drained
conditions ................................................................................................................................. 54
Table 5.5: Case 2 factor of safety from stability charts ............................................................ 56
Table 5.6: Factor of safety from Spreadsheet and SLOPE/W for undrained conditions.......... 56
Table 5.7: Factor of safety from Spreadsheet and SLOPE/W for drained conditions.............. 57
Table 5.8: Case 2 factors of safety when negative pore pressures are ignored ........................ 58
Table 5.9: Case 3 and Case 4 properties ................................................................................... 59
Table 5.10: Case 3 factor of safety from stability charts .......................................................... 59
Table 5.11: Case 3 factors of safety from spreadsheet and SLOPE/W for undrained conditions
.................................................................................................................................................. 60
Table 5.12: Case 3 factors of safety from spreadsheet and SLOPE/W for drained conditions 61
Table 5.13: Factor of safety from stability charts ..................................................................... 62
Table 5.14: Case 4 factors of safety from spreadsheets and SLOPE/W for undrained
conditions ................................................................................................................................. 63
Table 5.15: Case 4 factors of safety from spreadsheets and SLOPE/W for drained conditions
.................................................................................................................................................. 64
Table 5.16: Summary of results from stability charts and limit equilibrium methods ............. 65
Table 6.1: Undrained shear strength classification (BS 5930-1999) ........................................ 66
Table 6.2: Undrained shear strength classifications (AS1726-1993) ....................................... 67
Table 6.3: Values of angle of shearing resistance for different sand densities ........................ 73
Table 7.1: Case study soil properties. ....................................................................................... 81
Table 7.2: Factors of safety and failure type for a typical tailings dam downstream slope using
varying assumptions on the foundation properties and apparent cohesion. ............................. 83
Table 7.3: Case study upstream slope factors of safety for 5 kPa and zero cohesion .............. 84
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