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- W2388097111 abstract "A set of creep experiments were performed to study the viscoelasto-plastic characteristics of jointed soft ore-rock in Jinchuan Mine Ⅲ by a circular increment step load and unload method.The experimental data were analyzed according to instantaneous elastic strain,viscoplastic strain,instantaneous plastic strain and viscoplastic strain.The viscoelasto-plastic characteristics of jointed soft ore-rock were discussed.Based on scientific analysis on experimental data,the rules of creep strain and instantaneous strain under step load and unload were obtained.Brought forward two nonlinear components:closed cranny body and nonlinear Newton body,and combined them with Kelvin body describing the deceleration creep and Hoke body describing the instantaneous elasticity to gain a new multiple components creep model.The model was used to study viscoelasto-plastic characteristics of jointed soft rocks,the creep characteristic curves were obtained through curve fitting.The test results show that the new multiple components creep model can effectively describe the creep properties of jointed soft rocks under different stress level,especially the properties of the cranny-closed phase and the creep-accelerated phase.The creep testing curves of the ore-rock of Jinchuan Mine Ⅲ are coincident well with the theoretic curves." @default.
- W2388097111 created "2016-06-24" @default.
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- W2388097111 date "2008-01-01" @default.
- W2388097111 modified "2023-09-27" @default.
- W2388097111 title "Creep properties experiment and model of jointed soft rocks under step load and unload" @default.
- W2388097111 hasPublicationYear "2008" @default.
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