1. Course : S0705 – Soil Mechanic
Year : 2008
TOPIC 7 SLOPE STABILITY

2. CONTENT SLOPE FAILURE AND SLOPE STABILITY (SESSION 25-26 : F2F)
BISHOP METHOD (SESSION : F2F)
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3. CAUSAL FACTOR OF FAILURE
SLOPE FAILURE
CAUSAL FACTOR OF FAILURE
THE SLOPE IS TOO STEEP
UNSUITABLE OF SOIL PROPERTIES
LESS COMPACTION
INFLUENCE OF PORE WATER AND OR RAIN
EARTHQUAKE
LIQUIFACTION
HUMAN MANNER
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4. SLOPE FAILURE
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5. FAILURE TYPE
ROTATIONAL
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6. FAILURE TYPE
TRANSLATIONAL
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7. FAILURE TYPE
FALLING
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8. FAILURE TYPE
BLOCK SLIDE
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9. FAILURE TYPE
TOPPLE
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10. FAILURE TYPE
FLOW
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11. SLOPE FAILURE
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12. SLOPE FAILURE
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13. SLOPE FAILURE
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14. SLOPE FAILURE
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15. SLOPE FAILURE
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16. SLOPE STABILITY PURPOSE SLOPE STABILITY ANALYSIS AGAINST LANDSLIDE
SELECTION OF THE SUITABLE SOIL PARAMETER
THE USE OF APPROPRIATE CALCULATION METHOD INCLUDE USING COMPUTER SOFTWARE
EFFICIENCY AND EFFECTIVENESS SOLUTION METHODS
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17. PARAMETER AND ANALYSIS
TOTAL (, c, )
EFFECTIVE (’, c’, ’)
ANALISIS
LIMIT EQUILIBRIUM THEORY (MOHR COULOMB FAILURE CRITERIA)
FORCE EQUILIBRIUM
FORCE AND MOMENT EQUILIBRIUM
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18. CALCULATION METHOD FORCE EQUILIBRIUM FORCE AND MOMENT EQUILIBRIUM
ORDINARY METHOD OF SLICES (OMS)
SIMPLIFIED BISHOP
SIMPLIFIED JANBU
CORPS OF ENGINEER
LOWE AND KARAFIATH
GENERALIZED JANBU
FORCE AND MOMENT EQUILIBRIUM
BISHOP’S RIGOROUS
SPENCER
SARMA
MORGENSTERN-PRICE
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19. TRANSLATIONAL LANDSLIDE
INFINITE SLOPE
COHESIVE SOIL
COHESIONLESS SOIL
FINITE SLOPE
PLANE FAILURE SURFACE
BLOCK SLIDE ANALYSIS
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20. CIRCULAR SURFACE ANALYSIS
ROTATIONAL LANDSLIDE
CIRCULAR SURFACE ANALYSIS
CIRCULAR ARC (U = 0) METHOD
FRICTION CIRCLE METHOD
METHOD OF SLICE
ORDINARY METHOD OF SLICES (OMS)
JANBU’S SIMPLIFIED METHOD
BISHOP’S SIMPLIFIED METHOD
MORGENSTERN – PRICE METHOD
ETC
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21. ROTATIONAL LANDSLIDE
METHOD OF SLICES
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22. ROTATIONAL LANDSLIDE
ORDINARY METHOD OF SLICES (OMS)
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23. SIMPLIFIED BISHOP METHOD
ROTATIONAL LANDSLIDE
SIMPLIFIED BISHOP METHOD
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24. ROTATIONAL LANDSLIDE
A Slope of 20 m height and angle 2H:1V had been landslide as shown in following figure. The center of failure circle is at (35.1;55) and the failure circle radius is 38.1 m
(35,1;55)
(20;20)
38,1 m
 = 16 kN/m3
= 20 o
c = 20 kN/m2
Determine the safety factor of slope base on :
Ordinary Method of Slices
Bishop’s Method
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25. ROTATIONAL LANDSLIDE
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26. ROTATIONAL LANDSLIDE
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27. ROTATIONAL LANDSLIDE
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28. SOLUTION
GRAVITY WALL
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29. SOLUTION
SOIL NAILING (TIE BACK)
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30. SOLUTION
SHEET PILE, PILE
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31. SOLUTION
REINFORCEMENT (STEEL, GEOSYNTHETIC)
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