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2D numerical analysis of the seismic response of a karst rock mass: importance of underground caves and geostructural details

cavity. On the other hand, in the case of V p waves, the amplification of the ground motion is concentrated at the centre of the cavern and decrease sharply, moving to its boundaries. Figure 1 Amplification factor (a) and spectral ratio (b) values above an underground cave inside a homogeneous and isotropic subsoil crossed by V s waves, based on the parametric variation of the cave diameter (from [7] modified). The UDEC numerical program was used to simulate the LSR of an anisotropic and discontinuous geotechnical model of a real case study, in order to

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