Study on the Creep Constitutive Model of a Sandstone Rock under the Water-Rock Interaction

With the continuous construction of large-scale geotechnical engineering, more and attention has been paid to long-term stability rock mass especially problem creep under influence water. Combined with author’s previous research on triaxial characteristics sandstone water-rock interaction, a nonlinear constitutive model was established capture degradation behavior due cyclic wetting drying reservoir Due limitations visco-elastoplastic model, thorough modification done account effect interaction mechanical rock. Finally, predicted results were proved be in good agreement experimental results. Moreover, strong correlations between show effectiveness modified scrutinize Relevant have important theoretical significance for accurate prediction effective control engineering interaction.