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Recent Advances in Debris Flow Modelling

Xiaobo Wang, Dave H. Chan, Norbert R. Morgenstern

In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost Conference

Session: T3-A

ABSTRACT: This paper presents the basic concept of an energy approach in debris flow runout analysis. The framework is based on mass and energy conservation in the global and local sense and takes into account external and internal energy dissipation. The formulation of the governing equations is unique in its treatment of energy calculation adopting the Rankine active and passive state of failure. Although the energy approach degenerates to the existing momentum approach for special cases, it is potentially more robust in accounting for various internal mechanisms that may occur in debris flow.

RÉSUMÉ: Cet article présente le concept d'une approche énergétique à l'analyse des coulées de débris. La démarche est dérivée de la conservation de la masse et de l'énergie tant au niveau global que local. La formulation des équations de base est unique dans son traitement du calcul de l'énergie en utilisant l'approche active et passive de l'état de rupture de Rankine. Bien que pour certains cas spéciaux, l'approche énergétique dégénère vers l'approche moment existante, elle est potentiellement plus robuste en tenant compte des diverses mechanismes internes qui peuvent apparaître en coulées de débris.

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Cite this article:
Xiaobo Wang; Dave H. Chan; Norbert R. Morgenstern (2010) Recent Advances in Debris Flow Modelling in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO2010_114, author = Xiaobo Wang; Dave H. Chan; Norbert R. Morgenstern,
title = Recent Advances in Debris Flow Modelling,
year = 2010
}