Abstract：Research purposes: Rational mechanics parameter of squeezing rocks is very important for understanding the mechanical characteristic of rocks and improving the reliability of numerical simulation. Based on the displacement time series from field monitoring, rheological parameter of rocks were obtained with numerical inversion analysis method, and visco-elastic constitutive model for squeezing rocks were identified in this paper. Rational constitutive model and rheological parameter can be provided for stability analysis of tunnel in squeezing ground.
Research conclusions: A method for identification of Theological model and inversion of mechanical parameters was proposed. This proposed method is based on the theories of rock mechanics and on-site measurement, which can be as the bridge linking the theory with practice.
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2008, Vol. 25 
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