The secondary development of the nonlinear creep constitutive model of rocks is the focus of the study of nonlinear creep of rocks.In this paper,the three-dimensional difference formula of the constitutive model established by the predecessors is derived,and the three-dimensional formula is written into the FLAC3D software for the secondary development of the constitutive model.The fitting degree of numerical simulation and experimental data was compared and analyzed to verify the correctness of the model.
rockconstitutive equationsunloading creepsecondary development
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