Abstract
This paper summarizes the outcome of a research project funded by the European Commission on the simulation of landslide and debris flow. The numerical techniques adopted include the mesh-based method (FEM), the point-based method (SPH) as well as a hybrid method (Lattice-Boltzmann Method and DEM). Centrifuge model tests were carried out for the purpose of validation.
Highlights
Debris flows are often triggered by landslides either partially or completely mobilizing into debris flows
The elliptical PDF for quasi-static loading will change to parabolic. This change brings about some difficulties for the numerical calculations using the Finite Element Method (FEM)
Nicot at INRAE, Grenoble, France is devoted to the numerical simulation of flexible barriers against debris flow by Discrete Element Method (DEM)
Summary
The limit equilibrium approach cannot capture the initiation of hydrologically driven slope failure, which is characterized mainly by transient processes. A consistent analysis of slope stability requires a fully coupled analysis of the hydrological and mechanical processes in multiphase media, and which considers spatial and temporal multiscale properties. Consistent continuum modelling of debris flows requires an advanced constitutive model capable of describing the local inhomogeneity and solid-like/fluid-like behaviour and a robust numerical scheme, e.g. SPH (Smooth Particle Hydrodynamics), MPM (Material Particle Method) and PFEM (Particle Finite Element Method). The project MUMOLADE (Multiscale Modelling of Landslides and Debris Flows) was funded within the framework of the Marie Curie ITN (Initial Training Networks) by the European Commission in order to address needs in research and training in the numerical simulation of landslides and debris flows. This paper gives a brief account of the results achieved in MUMOLADE
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