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Rock Mechanics and Rock Engineering

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01.10.2009 | Original Paper

Probabilistic Stability Evaluation of Oppstadhornet Rock Slope, Norway

verfasst von: H. S. B. Duzgun, R. K. Bhasin

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 5/2009

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Abstract

Probabilistic analyses provide rational means to treat the uncertainties associated with underlying parameters in a systematic manner. The stability of a 734-m-high jointed rock slope in the west of Norway, the Oppstadhornet rock slope, is investigated by using a probabilistic method. The first-order reliability method (FORM) is used for probabilistic modeling of the plane failure problem in the rock slope. The Barton–Bandis (BB) shear strength criterion is used for the limit state equation. The statistical distributions of the BB criterion parameters, for which comprehensive data were collected and statistically analyzed, are determined by using distribution fitting algorithms. The sensitivity of the FORM model for the BB criterion is also investigated. It is found that the model is most sensitive to the mean value of the residual friction angle (ϕ _r) and least sensitive to the mean value of the slope angle (β _f). It is also found that the standard deviation of joint compressive strength (JCS) causes the greatest difference in the reliability index, which has the least sensitivity to the change in the mean and standard deviation of joint roughness coefficient (JRC).

Vorheriger Artikel Numerical Analysis of the 650,000 m2 Åknes Rock Slope based on Measured Displacements and Geotechnical Data

Nächster Artikel Stability Analysis and the Stabilisation of Flexural Toppling Failure

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Titel: Probabilistic Stability Evaluation of Oppstadhornet Rock Slope, Norway
verfasst von: H. S. B. Duzgun
R. K. Bhasin
Publikationsdatum: 01.10.2009
Verlag: Springer Vienna
Erschienen in: Rock Mechanics and Rock Engineering / Ausgabe 5/2009
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-008-0011-3

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