THERMAL SCIENCE

International Scientific Journal

Kun Xiao

,

Ze-Tian Zhang

,

Er-Sheng Zha

,

Li Ren

,

Jing Xie

,

Zhi-Long Zhang

,

Chen-Di Lou

,

Ting Ai

A NON-LINEAR CREEP MODEL CONSIDERING DISTURBANCE DAMAGE AT DIFFERENT DEPTHS

ABSTRACT
The rock creep model is an important part of the study of the time-dependent me­chanical behavior of rock. To ensure the safe excavation and long-term stable operation of deep engineering, a creep damage factor considering accelerating creep initiation time and creep failure time was proposed. By introducing the initial damage of excavation disturbances at different depths, a creep damage constitutive model for rocks at different depths considering disturbances was derived. This creep model has fewer parameters that are easy to obtain. It can better describe the accelerating creep characteristics of rock at different depths, especially for a more accurate description of the long-term creep mechanical behavior of deep rock.
KEYWORDS
creep model, excavation disturbance, damage mechanics, accelerating creep
PAPER SUBMITTED: 2023-03-12
PAPER REVISED: 2023-05-18
PAPER ACCEPTED: 2023-06-13
PUBLISHED ONLINE: 2023-11-05
DOI REFERENCE: https://doi.org/10.2298/TSCI2305863X
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 5, PAGES [3863 - 3868]
REFERENCES
  1. Munson, D. E., Constitutive Model of Creep in Rock Salt Applied to Underground Room Closure, International Journal of Rock Mechanics and Mining Sciences, 34 (1997), 2, pp. 233-247
  2. Kou, H., et al., A Fractional Non-linear Creep Damage Model for Transversely Isotropic Rock, Rock Mechanics and Rock Engineering, 56 (2023), 2, pp. 831-846
  3. Wang, J. B., et al., A Non-stationary Viscoelasto-plastic Creep Model for Salt Rock, Disaster Advances, 6 (2013), 10, pp. 93-101
  4. Li, X. Z., et al., A Study on the Creeping Failure Related to Crack Inclination of Brittle Rocks, Ksce Journal of Civil Engineering, 23 (2019), 1, pp. 444-451
  5. Liu, C. S., et al., The Viscoelastic Model on Endochronic Theory, Journal of Strain Analysis for Engineering Design, 32 (1997), 4, pp. 267-271
  6. Yang, H. Q., et al., Analysis of the Excavation Damaged Zone Around a Tunnel Accounting for Geostress and Unloading, International Journal of Rock Mechanics and Mining Sciences, 69 (2014), 7, pp. 59-66
  7. Zhang, A. L., et al., Mechanical Properties and Energy Characteristics of Coal at Different Depths under Cyclic Triaxial Loading and Unloading, International Journal of Rock Mechanics and Mining Sciences, 161 (2023), 1, 105271
  8. Diederichs, M. S., et al., Damage Initiation and Propagation in Hard Rock During Tunnelling and the Influence of Near-face Stress Rotation, International Journal of Rock Mechanics and Mining Sciences, (2004), 5, pp. 785-812
  9. Zha, E., et al., Long-term Mechanical and Acoustic Emission Characteristics of Creep in Deeply Buried Jinping Marble Considering Excavation Disturbance, International Journal of Rock Mechanics and Mining Sciences, 139 (2021), 3, 104603
  10. Lemaitre, J., A Continuous Damage Mechanics Model for Ductile Fracture, Journal of Engineering Materials and Technology-Transactions of the Asme, 107 (1985), 1, pp. 83-89
  11. Rybacki, E., et al., Creep of Posidonia Shale at Elevated Pressure and Temperature, Rock Mechanics and Rock Engineering, 50 (2017), 12, pp. 3121-3140
PDF VERSION [DOWNLOAD]
A non-linear creep model considering disturbance damage at different depths

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence