Numerical Simulation of Humidity-Stress in Unsaturated Argillite Tunnel
An extension of Hoek-Brown criteria to include unsaturated behavior of argillite in porous medium is presented. The model is applied to simulate evolution of saturation degree in argillite and concrete in an experimental tunnel where field investigation of thermo-hydro-mechanical response of argillite and concrete will be done. Based on the laboratory experimental data, two different flow rules of water relative permeability and water saturation degree were suggested. The general evolution rules of saturation degree in argillite and concrete with time considering the effects ventilation are obtained.
Ichsan Setya Putra and Djoko Suharto
W. Z. Chen et al., "Numerical Simulation of Humidity-Stress in Unsaturated Argillite Tunnel", Key Engineering Materials, Vols. 306-308, pp. 1409-1414, 2006