Comparaison de différentes approches numériques dans l'analyse des phénomènes d'instabilité de type fontis

Abstract : In the vicinity of old shallow underground mining works, failures may appear on surface with development of craters called sinkholes. In the regional planning program, it is necessary to predict the probability of occurrence of this type of phenomenon as well as its consequence. Considering the complexity of the problem, the analytical methods appear generally unsufficient. The numerical methods are, as for them, more powerful. However, they require a great number of data that are only partially accessible, which can lead to erroneous results and conclusions. This is why, in order to circumvent these difficulties, a semi-analytical approach was developed. The comparison of the results obtained by this approach with those resulting from calculations by finite elements on a real case shows that the method is relevant.
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  • HAL Id : ineris-00973262, version 2
  • INERIS : EN-2007-200

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Nicolas Poirot, Sadjia Kecili-Laouafa, Farid Laouafa. Comparaison de différentes approches numériques dans l'analyse des phénomènes d'instabilité de type fontis. 18. Congrès Français de Mécanique (CFM'07), Aug 2007, Grenoble, France. pp.6. ⟨ineris-00973262v2⟩

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