Influence of random variability of soil parameters and seismic acceleration on a homogeneous earth dam stability.
Influence of random variability of soil parameters and seismic acceleration on a homogeneous earth dam stability.
The reliability approach is carried out in this study to take into account the uncertainties linked to the calculating parameters of a dam stability. Three random variables are considered; namely the seismic acceleration (A), cohesion (C') and friction angle () of the dam backfill. These variables are generated with log-normal distribution law. The state function, dictated by limit state of slops sliding, is taken from Fellenius mechanical model. The failure probability Pf is obtained by Monte Carlo simulation method, depending on the variation coefficient Cv. The results of the reliability analysis showed that the failure probability is more sensitive to random variability of the ground parameters (C', ) than to the random variability of seismic acceleration (A), for the two slopes.
Lynda Belazouz; Karima Bouzelha; Hocine Hammoum; Imane Manseur; Feriel Arris
18th African Regional Conference on Soil Mechanics and Geotechnical Engineering (ARCSMGE2024)
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