A probabilistic design approach for rock slopes

The basic aim of this study is to develop a reliability-based methodology for the practical design of rock slopes. The advanced first-order second-moment (AFOSM) approach is adapted as;the reliability assessment model. In the reliability-based design methodology, the first step is the modeling and quantification of uncertainties associated with the design parameters. Since the safety of a rock slope is most sensitive to the shear strength of discontinuities, the uncertainty analysis is focused on the parameters associated with the discontinuity shear strength. These uncertainties are modeled and analyzed within the framework of AFOSM method and all relevant information is utilized in their quantification. A wedge failure case is considered for the implementation of proposed design methodology in which a comprehensive uncertainty analysis for the shear strength of discontinuity planes are carried out and the mean and variance of the basic variables are quantified. Based on the AFOSM reliability technique, reliability index and probability of failure for various slope angle and slope height combinations are computed and safe design slope angles for every slope height are selected according to a specified acceptable level of reliability that is determined according to the previous recommendations in the literature.


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In this thesis, the results of a number of rock mass classification systems applied to Dim-higway tunnel study area are presented. The tunnel ground was classified according to Rock Mas Rating (RMR), Modified Rock mass Rating (M-RMR), Rock mass quality (Q), Geological Strength Index (GSI) and New Austrian Tunneling Method (NATM). Dim Tunnel has a horse-shoe shape, with a diameter of 10 meters and maximum overburden thickness of 70 meters. During studies, the geological and geotechnical characteristics of th...
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The use of low-cost direct dumpling technology, as is well known, has a relatively limited field of application: flat coal seams, and the higher the dip angle of the seam, the more difficult it is to place the necessary volume of overburden rock in the dumping layers. For this, we have to pour four-tier dumps. In this article, four possible options for piling the dump have been studied and prerequisites have been made for further research aimed at improving the efficiency of the use of direct dumpling techn...
A methodology for reliability-based design of rock slopes
DUZGUN, HSB; Yücemen, Mehmet Semih; Karpuz, Celal (Springer Science and Business Media LLC, 2003-04-01)
A reliability-based methodology for the design of rock slopes, that can easily be implemented by the practicing engineers is proposed. The advanced first-order second-moment (AFOSM) method is adopted as the reliability assessment model and its application is illustrated for the case of plane failure. A model is developed within the framework of first-order second-moment approach to analyze the uncertainties underlying the in situ shear strength properties of rock discontinuities. Here, particular emphasis i...
A Methodology for Optimal Layout Design of Pressure Cells for Concrete Faced Rockfill Dams
Arı, Onur; Yanmaz, Ali Melih (Springer Science and Business Media LLC, 2018-08-01)
In this study, a methodology for optimal layout design of pressure cells for concrete faced rockfill dams is developed. A representative dimensionless stress distribution model was formed for obtaining the magnitudes and location of different stress zones as a function of dam height. This information enabled development of a procedure for proper location and the number of pressure cells throughout the dam body. A vertical placement algorithm based on error minimization was first developed, which is followed...
Probabilistic modeling of plane failure in rock slopes
DUZGUN, HSB; Yücemen, Mehmet Semih; Karpuz, Celal (2003-07-09)
The basic aim of this study is to formulate a probabilistic method by which sources of uncertainties can be taken into account and systematically analyzed in dealing with the rock slope stability problem. For this purpose, the advanced first-order second-moment (AFOSM) method and the Monte Carlo simulation (MCS) procedure are used to model the plane failure problem in rock slopes. The modeling of plane failure by the AFOSM and the MCS methods requires the understanding of the basic mechanism of plane failur...
Citation Formats
H. DUZGUN, C. Karpuz, and M. S. Yücemen, “A probabilistic design approach for rock slopes,” 1998, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53957.