Unified Framework for Multiphase Geohazard

Our overall objective is to improve the understanding of soil liquefaction and deposition in large-scale landslides and dam failures. For this purpose, a numerical framework will be developed that allows modelling of the entire process sequence of such geotechnical failures - from initiation to liquefaction and transport of the liquefied material to its deposition - for four typical triggers: seismic liquefaction, erosion, shear band propagation and static liquefaction, as well as the interaction between soil and the surrounding water. The numerical framework will be programmed in-house based on the Material Point Method (MPM), which has shown promising results in modelling large deformations and soil-water interaction.

Our work will improve the fundamental understanding of geomechanical processes during geotechnical mass movements. Together with the numerical methods we have developed, this will allow us to improve hazard assessment and assist the engineering community in designing safeguards. This can increase the protection of critical infrastructure and the population from environmental hazards.
 

SNF Grant number 215091 (external pagehttps://data.snf.ch/grants/grant/215091call_made)

David Hodel