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- W2394157624 abstract "The generalized Hoek-Brown failure criterion was proved to account for the low tension strength as well as high compression strength under different stress states for the rock salt,through the comparison of four failure criteria with experimental data.An elasto-plastic model suitable for rock salt was presented by combining the Hoek-Brown criterion with stress dependent plastic flow rules.Furthermore,based on the Lemaitre equivalent strain theory,the creep damage component was introduced to establish a new elasto-viscoplastic damage model for the rock salt,which takes into account the transient phase,the steady state phase and the accelerated phase of creep.The constitutive model was validated on the laboratory test and implemented into a three dimensional finite difference software FLAC3D by its secondary development interface.The various rapid withdrawal simulations were conducted to analyze the damage and failure zone evolution around the Jintan salt cavern with the new model.The initial minimum cavern pressure was 7 MPa according to the calculated results.The study indicates that the new damage model agrees well with the rock salt test results and gives a faithful representation of the rock salt elasto-viscoplastic damage behavior.In addition,the presented constitutive law has a good numerical stability during the calculation period." @default.
- W2394157624 created "2016-06-24" @default.
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- W2394157624 date "2012-01-01" @default.
- W2394157624 modified "2023-09-23" @default.
- W2394157624 title "An elasto-viscoplastic damage model combined with generalized Hoek-Brown failure criterion for rock salt and its engineering application" @default.
- W2394157624 hasPublicationYear "2012" @default.
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