A model for the analysis of rapid landslide motion across three-dimensional terrain

A new numerical model for the dynamic analysis of rapid flow slides, debris flows, and avalanches has been developed. The model is an extension of an earlier algorithm and is implemented using a numerical method adapted from smoothed particle hydrodynamics. Its features include (i) the ability to simulate flow across complex three-dimensional terrain; (ii) the ability to allow nonhydrostatic and anisotropic internal stress distributions, coupled with strain changes through frictional relationships; (iii) the ability to simulate material entrainment; (iv) a choice of different rheological kernels, including frictional, plastic, viscous, Bingham, and Voellmy; (v) a meshless solution, which eliminates problems with mesh distortion during long displacements; and (vi) highly efficient and simple operation. The model has been tested by analysing a series of laboratory flume experiments with granular materials, both on straight and curved paths. The model is capable of accurately predicting the margins of variou...

[1]  K. Terzaghi,et al.  Soil mechanics in engineering practice , 1948 .

[2]  J. Monaghan,et al.  Smoothed particle hydrodynamics: Theory and application to non-spherical stars , 1977 .

[3]  L. Lucy A numerical approach to the testing of the fission hypothesis. , 1977 .

[4]  J. Monaghan Particle methods for hydrodynamics , 1985 .

[5]  J. N. Hutchinson A sliding–consolidation model for flow slides , 1986 .

[6]  William H. Press,et al.  Numerical recipes in C. The art of scientific computing , 1987 .

[7]  Kyoji Sassa,et al.  Geotechnical model for the motion of landslides , 1988 .

[8]  S. Savage,et al.  The motion of a finite mass of granular material down a rough incline , 1989, Journal of Fluid Mechanics.

[9]  W. Benz Smooth Particle Hydrodynamics: A Review , 1990 .

[10]  J. Robert Buchler,et al.  The Numerical Modelling of Nonlinear Stellar Pulsations , 1990 .

[11]  B. Voight,et al.  Continuum simulation of flow failures , 1991 .

[12]  P. Julien,et al.  Two‐Dimensional Water Flood and Mudflow Simulation , 1993 .

[13]  Oldrich Hungr,et al.  A model for the runout analysis of rapid flow slides, debris flows, and avalanches , 1995 .

[14]  Comparison of Debris Flow Modelling Approaches , 1997 .

[15]  R. Iverson,et al.  U. S. Geological Survey , 1967, Radiocarbon.

[16]  Kolumban Hutter,et al.  Gravity-driven free surface flow of granular avalanches over complex basal topography , 1999, Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences.

[17]  Hung Tao Shen,et al.  Lagrangian Simulation of One-Dimensional Dam-Break Flow , 1999 .

[18]  J. Monaghan Smoothed particle hydrodynamics , 2005 .

[19]  Kolumban Hutter,et al.  Channelized free-surface flow of cohesionless granular avalanches in a chute with shallow lateral curvature , 1999, Journal of Fluid Mechanics.

[20]  J. Major,et al.  Debris-flow deposition: Effects of pore-fluid pressure and friction concentrated at flow margins , 1999 .

[21]  P. Heinrich,et al.  Analytical Solution for Testing Debris Avalanche Numerical Models , 2000 .

[22]  H Chen,et al.  Numerical simulation of debris flows , 2000 .

[23]  G. Brooks A synthesis of geological hazards in Canada , 2001 .

[24]  Richard M. Iverson,et al.  Flow of variably fluidized granular masses across three‐dimensional terrain: 1. Coulomb mixture theory , 2001 .

[25]  J. N. Hutchinson,et al.  A review of the classification of landslides of the flow type , 2001 .

[26]  Richard M. Iverson,et al.  Flow of variably fluidized granular masses across three‐dimensional terrain: 2. Numerical predictions and experimental tests , 2001 .

[27]  T. Sturm,et al.  Open Channel Hydraulics , 2001 .

[28]  N. R. Morgenstern,et al.  Rapid flow slides of coal-mine waste in British Columbia, Canada , 2002 .

[29]  Francesco M. Guadagno,et al.  Velocity and runout simulation of destructive debris flows and debris avalanches in pyroclastic deposits, Campania region, Italy , 2004 .

[30]  Scott McDougall,et al.  Dynamic modelling of entrainment in rapid landslides , 2005 .