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Probability of failure from plane failure on rock slope in Bukit Nunggal

2022; IOP Publishing; Volume: 1108; Issue: 1 Linguagem: Inglês

10.1088/1755-1315/1108/1/012067

1755-1307

Haslen Oktarianty, Janiar Pitulima,

Rock Mechanics and Modeling

Abstract The problem of slope stability is an important issue because it concerns human safety issues, equipment, buildings and disrupts the smoothness of production. In this research we hope can anticipated failure damage wich interpertation probability of failure. To analyze the stability of the slope can be known through the mechanical properties such as cohesion, friction angle and unit weight of the rock with Point Estimated Method [1] in 3 time standart deviation.The large FK does not represent a more stable slope, because the uncertainty of slope is not captured by the FK value. The slope with FK = 3 does not mean 2 times more stable than FK 1.5 then it is used the probability of sliding formed from some mechanical parameters. Based on the analytic calculation using point estimate method obtained the probability of failure (POF) plane of 0,00004%. Based on the Stacey table (2009) then POF plane 0,00004% can still be accepted.