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arXiv · 2010.03129

A Family of Constitutive Models Implemented in PLAXIS to Simulate Cemented Mine Backfill

M. G. Sottile·N. A. Labanda·I. Garcia Mendive·O. Ledesma·A. O. Sfriso
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Abstract

A family of constitutive models for mine cemented backfill is presented. Four formulas for the density- and pressure-dependency of elastic moduli, five formulas for the density- and pressure-dependency of friction angle and four formulas for the age-dependency of the elastic moduli and effective cohesion are incorporated into an isotropic hypoelasticity with Mohr-Coulomb perfect plasticity framework and implemented in PLAXIS as a user-defined material model. This family includes the standard Mohr-Coulomb, Bolton, Leps, Barton and Hoek- Brown models as trivial cases when both nonlinear elasticity and age-dependency are switched off. In this paper, the formulation of the models is introduced, the basis of the numerical implementation is outlined, and a case history of the application to the cemented backfill of a sublevel stoping mine is presented as an example.

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M. G. Sottile, N. A. Labanda, I. Garcia Mendive, O. Ledesma, A. O. Sfriso. 2020-10-07. A Family of Constitutive Models Implemented in PLAXIS to Simulate Cemented Mine Backfill. https://doi.org/10.3233/stal190087

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