Imagerie d’interface barrage-fondation par inversion de forme d'onde complète

In the context of studying the stability of dams, imaging the interface between the dam and the rock is of great importance. Geophysical techniques can provide additional information to geotechnical measurements. Here, a method for processing seismic measurements is presented. The objective is to obtain an image of the interface between the concrete of the dam and the rock of the foundation with metric resolution. The proposed technique is based on "Full Waveform Inversion" with a shape optimization approach. Numerical results using synthetic measurements demonstrate the method's ability to accurately recover the interface with a limited number of measurement points and in the presence of noise.