Creep behavior of rocks and its application to the long-term stability of deep rock tunnels

W Frenelus, H Peng, J Zhang - Applied Sciences, 2022 - mdpi.com
Since underground structures such as tunnels are inevitably surrounded by rocks, their long-
term safety and stability are primarily governed by the comportment of these materials. Being …

[HTML][HTML] Assessment of nano-to-micro-scale geomechanical properties and their time-dependent behavior: Current status and progressive perspectives

MC Ngoma, O Kolawole - Rock Mechanics Bulletin, 2024 - Elsevier
Rocks can deform at varying scales (nano-, micro-and macro-scale) under different
temperatures, pressures, stresses, and time conditions. Sub-core scale (nano-to micro …

Variable parameter creep model based on the separation of viscoelastic and viscoplastic deformations

W Liu, H Zhou, S Zhang, C Zhao - Rock Mechanics and Rock Engineering, 2023 - Springer
The MTS815. 02 rock test system is used for performing triaxial compression creep
experiments on sandstone to reveal the rheological properties of the rock in deep roadways …

Nonlinear creep model of salt rock used for displacement prediction of salt cavern gas storage

J Wang, Q Zhang, Z Song, S Feng, Y Zhang - Journal of Energy Storage, 2022 - Elsevier
To explore the creep response and unloading rebound effect of salt rock, uniaxial
compression creep and unloading rebound tests are performed at different axial stresses on …

Creep properties and damage constitutive model of salt rock under uniaxial compression

J Wang, Q Zhang, Z Song… - International Journal of …, 2020 - journals.sagepub.com
To study the creep property of salt rock, uniaxial compression creep tests on salt rock
specimens were carried out. The test results indicate that there is no steady creep of the salt …

New fractional variable-order creep model with short memory

F Wu, R Gao, J Liu, C Li - Applied Mathematics and Computation, 2020 - Elsevier
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An improved nonlinear creep model for rock applied to tunnel displacement prediction

K Wu, Z Shao, S Qin, N Zhao, Z Chu - International Journal of …, 2021 - World Scientific
Traditional creep models cannot describe the nonlinear creep characteristics of rock; thus,
considerable efforts have been made to establish better rock creep models. However, many …

Improved nonlinear Burgers shear creep model based on the time-dependent shear strength for rock

H Lin, X Zhang, R Cao, Z Wen - Environmental Earth Sciences, 2020 - Springer
Shear strength is an important mechanical index of rock. The adjustment and reorganization
of rock structure can be reflected by the variation of shear strength. During rock rheology, the …

A new fractional-order model for time-dependent damage of rock under true triaxial stresses

Z Zheng, Z Cai, G Su, S Huang… - … Journal of Damage …, 2023 - journals.sagepub.com
To reasonably describe the time-dependent characteristics of rock under true triaxial
stresses and analyze the long-term stability of deep underground engineering, based on the …

A full-stage creep model for rocks based on the variable-order fractional calculus

Y Gao, D Yin - Applied Mathematical Modelling, 2021 - Elsevier
An accurate characterization of rocks for the modelling of creep is an essential step toward
ensuring the safety with respect to reliability of underground rock engineering. In this work, a …