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Abstract
From the generalised constitutive law of rheological constitutive model of rock material, the model identification is transformed to parameter identification. To improve the efficiency of the traditional evolutionary algorithm, a new immune continuous ant colony algorithm proposed by the author is applied in this study, based on which one new model identification method is proposed. Using this new method, a real engineering example is applied to verify the computing ability of the new algorithm. The results show that the effect and efficiency of the new method are very good.