Flowslide Runout Analysis Using Finite Element and Material Point Methods
Ali P. Babaki, Dwayne D. Tannant
In the proceedings of: GeoManitoba 2025: 78th Canadian Geotechnical Conference & 9th Canadian Permafrost ConferenceSession: Geohazards 2 Landslides
ABSTRACT: Deterministic slope stability analysis with monitoring data is commonly used to manage landslide hazards. However, this approach has significant limitations when addressing brittle failures with minimal or no prior signs of impending failure. This highlights the importance of a risk-informed approach driven by the consequences of an event in landslide hazard management. This study presents a decoupled FEM-MPM framework, utilizing commonly available computational tools for flowslide runout analysis. The NorSand constitutive model is used in the Finite Element Method (FEM) component to assess liquefaction propagation triggered by static loading, while the Mohr-Coulomb failure criterion is used in the Material Point Method (MPM) component for debris runout analysis. The framework covers the application of the triggering mechanism, tracking of liquefaction propagation, and the final MPM runout analysis. A case study of a flowslide in a tailings dam triggered by static liquefaction is used to demonstrate the methodology.
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Babaki, Ali P., Tannant, Dwayne D. (2025) Flowslide Runout Analysis Using Finite Element and Material Point Methods in GEO2025. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Babaki_GEO2025_186,
author = {{Babaki, Ali P.}, {Tannant, Dwayne D.}}
title = {Flowslide Runout Analysis Using Finite Element and Material Point Methods }
booktitle = {Proceedings of the 78th Canadian Geotechnical Conference & 9th Canadian Permafrost Conference}
year = {2025}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Flowslide Runout Analysis Using Finite Element and Material Point Methods }
booktitle = {Proceedings of the 78th Canadian Geotechnical Conference & 9th Canadian Permafrost Conference}
year = {2025}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }