CALCULATION OF PROBABILITY OF FAILURE FORM SLIDE FAILURE AND WEDGE FAILURE ON ROCK SLOPE

• Main Author: OKTARIANTY (NIM : 22114002), HASLEN
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/27769
• Institution: Institut Teknologi Bandung

The problem of slope stability is an important issue because it concerns human <br /> <br /> safety issues, equipment and building and production. To analyze the stability of <br /> <br /> slope can be known through the mechanical properties such as cohesion, friction <br /> <br /> angle and unit weight of the rock. <br /> <br /> A larger FOS does not necessarily represent a safer slope, as the magnitude of the <br /> <br /> implicit uncertainties is not captured by the FOS value. A slope with a FOS of 3 is <br /> <br /> not twice as stable as one with a FOS of 1.5. hence the probability of failure is <br /> <br /> formed from some mechanical parameters. <br /> <br /> Based on analytical calculations using estimation method. The probability of <br /> <br /> failure (POF) slide 11 location southwest slope Pb9s4 open pit Grasberg is <br /> <br /> 14.06% and the probability of failure wedge 36 location southwest slope Pb9s4 <br /> <br /> open pit is 32.5%. Based on the Stacey table (2009) POF slide14.06% is still <br /> <br /> acceptable. qualitative levels of risk and of acceptability from level L to level E <br /> <br /> (no injuries untill fatality)