Three-dimensional finite element simulation of creep deformation in rock salt

摘要

Describes a set of numerical techniques which implement the rate-dependent multi-mechanism deformation (M-D) constitutive model for rock salt in a finite element code for use in three-dimensional, finite strain simulations of creep closure in deeply buried salt excavations. Presents essential details of the numerical implementation. The constitutive model is exercised in a three-dimensional closure simulation of a large underground field experiment. Compares results from the simulation against actual closure measurements taken from the experiment.