Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope Stability
The rock slope stability assessment can be performed by means of deterministic and probabilistic approaches. As the deterministic analysis needs only representative values (generally, the mean value) for each physical and geo-mechanical parameter involved, it does not take into account the variabili...
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| Format: | Article |
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MDPI AG
2020-04-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/10/5/163 |
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| author | Paolo Budetta |
| author_facet | Paolo Budetta |
| author_sort | Paolo Budetta |
| collection | DOAJ |
| description | The rock slope stability assessment can be performed by means of deterministic and probabilistic approaches. As the deterministic analysis needs only representative values (generally, the mean value) for each physical and geo-mechanical parameter involved, it does not take into account the variability and uncertainty of geo-structural and geo-mechanical properties of joints. This analysis can be usually carried out using different methods, such as the Limit Equilibrium method or numerical modeling techniques sometimes implemented in graphical tests to identify different failure mechanisms (kinematic approach). Probabilistic methods (kinetic approach) aimed to calculate the slope failure probability, consider all orientations, physical characters and shear strength of joints and not only those recognized as kinematically possible. Consequently, the failure probability can be overestimated. It is, therefore, considered more realistic to perform both kinematic and kinetic analyses and to calculate a conditional probability given by the product of the kinematic and kinetic probabilities assuming that they are statistically independent variables. These approaches have been tested on two rock slopes in the Campanian region of Southern Italy affected by possible plane and wedge failures, respectively. Kinematic and kinetic probabilities have been evaluated both by means of the Markland’s test and the Monte Carlo simulation. Using the Eurocode 7, also a deterministic limit equilibrium analysis was performed. The obtained results were compared and commented on. |
| first_indexed | 2024-03-10T20:08:12Z |
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| id | doaj.art-2f601a021cac4c65aa39a6b3c479e555 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-10T20:08:12Z |
| publishDate | 2020-04-01 |
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| spelling | doaj.art-2f601a021cac4c65aa39a6b3c479e5552023-11-19T23:07:10ZengMDPI AGGeosciences2076-32632020-04-0110516310.3390/geosciences10050163Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope StabilityPaolo Budetta0Department of Civil, Architectural and Environmental Engineering, University of Naples “Federico II”, 80138 Naples, ItalyThe rock slope stability assessment can be performed by means of deterministic and probabilistic approaches. As the deterministic analysis needs only representative values (generally, the mean value) for each physical and geo-mechanical parameter involved, it does not take into account the variability and uncertainty of geo-structural and geo-mechanical properties of joints. This analysis can be usually carried out using different methods, such as the Limit Equilibrium method or numerical modeling techniques sometimes implemented in graphical tests to identify different failure mechanisms (kinematic approach). Probabilistic methods (kinetic approach) aimed to calculate the slope failure probability, consider all orientations, physical characters and shear strength of joints and not only those recognized as kinematically possible. Consequently, the failure probability can be overestimated. It is, therefore, considered more realistic to perform both kinematic and kinetic analyses and to calculate a conditional probability given by the product of the kinematic and kinetic probabilities assuming that they are statistically independent variables. These approaches have been tested on two rock slopes in the Campanian region of Southern Italy affected by possible plane and wedge failures, respectively. Kinematic and kinetic probabilities have been evaluated both by means of the Markland’s test and the Monte Carlo simulation. Using the Eurocode 7, also a deterministic limit equilibrium analysis was performed. The obtained results were compared and commented on.https://www.mdpi.com/2076-3263/10/5/163rock slope stabilitykinematic analysiskinetic analysisMonte Carlo simulationEurocode 7Southern Italy |
| spellingShingle | Paolo Budetta Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope Stability Geosciences rock slope stability kinematic analysis kinetic analysis Monte Carlo simulation Eurocode 7 Southern Italy |
| title | Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope Stability |
| title_full | Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope Stability |
| title_fullStr | Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope Stability |
| title_full_unstemmed | Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope Stability |
| title_short | Some Remarks on the Use of Deterministic and Probabilistic Approaches in the Evaluation of Rock Slope Stability |
| title_sort | some remarks on the use of deterministic and probabilistic approaches in the evaluation of rock slope stability |
| topic | rock slope stability kinematic analysis kinetic analysis Monte Carlo simulation Eurocode 7 Southern Italy |
| url | https://www.mdpi.com/2076-3263/10/5/163 |
| work_keys_str_mv | AT paolobudetta someremarksontheuseofdeterministicandprobabilisticapproachesintheevaluationofrockslopestability |