Two-dimensional thermomechanical creep analysis of solution-mined cavern convergence – Regina cavern n°5 – Phase 2.
Palavras-chave:
Creep, Salt Rock, Long-term creep, ConvergenceResumo
This study aims to evaluate the convergence of the second phase of a cave, obtained by dissolution in a
bedded salt, under the effect of different temperatures applied in its cavity. The shape of the cave was obtained
from sonar surveys at Regina Cave No.5 in 1983 by TransGas Ltd. The creep model used is based on an empirical
formulation that considers the stationary phase of creep, this model is known as the double mechanism creep law
or also called the Norton simplified model, presenting good results when the analysis involve long periods.
Numerical geomechanical simulations, with a maximum time of 30 years, were performed with CODE-BRIGHT
(Coupled DEformation BRIne Gas and Heat Transport) finite element code to the evaluation of rock stability and
deformation, showing excellent results in this type of numerical simulation scenario.
