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Quantifying the propagation of landslides is a key step for analyzinggravitational risks. In this context, thin-layer models have met a growingsuccess over the past years to simulate the dynamics of gravitational flows,such as debris flows. They are easier to use and require less computingressources than 3D models, and provide more detailed estimations of flowthicknesses and velocities than purely empirical methods. In this literaturereview, we present the main rheologies used to model homogeneous gravitationalflows, and describe a practical case study with debris flow modeling in thePr{\^e}cheur River (Martinique, Lesser Antilles). Then, we discuss possibledevelopments for operational hazard and risk assessment with thin-layer models.

revue française de géotechnique

Simulation des \'ecoulements gravitaires avec les mod\`eles  d'\'ecoulement en couche mince: \'etat de l'art et exemple d'application aux  coul\'ees de d\'ebris de la Rivi\`ere du Pr\^echeur (Martinique, Petites  Antilles)