Probabilistic Stability Evaluation of Oppstadhornet Rock Slope, Norway

Date

2009-10-01

Author

Düzgün, Hafize Şebnem
Bhasin, R. K.

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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 (I center dot (r)) and least sensitive to the mean value of the slope angle (beta (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).

Subject Keywords

Geotechnical Engineering and Engineering Geology, General Engineering, Earth and Planetary Sciences (miscellaneous), General Earth and Planetary Sciences, Geology, Civil and Structural Engineering, General Environmental Science

URI

https://hdl.handle.net/11511/57324

Journal

ROCK MECHANICS AND ROCK ENGINEERING

DOI

https://doi.org/10.1007/s00603-008-0011-3

Collections

Department of Mining Engineering, Article

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Citation Formats

H. Ş. Düzgün and R. K. Bhasin, “Probabilistic Stability Evaluation of Oppstadhornet Rock Slope, Norway,” ROCK MECHANICS AND ROCK ENGINEERING, pp. 729–749, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57324.