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The Creep-Damage Model of Salt Rock Based on Fractional Derivative

Author

Listed:
  • Hongwei Zhou

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China)

  • Di Liu

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China)

  • Gang Lei

    (College of Engineering, Peking University, Beijing 100871, China)

  • Dongjie Xue

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China)

  • Yang Zhao

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China)

Abstract

The use of salt rock for underground radioactive waste disposal facilities requires a comprehensive analysis of the creep-damage process in salt rock. A computer-controlled creep setup was employed to carry out a creep test of salt rock that lasted as long as 359 days under a constant uniaxial stress. The acoustic emission (AE) space-time evolution and energy-releasing characteristics during the creep test were studied in the meantime. A new creep-damage model is proposed on the basis of a fractional derivative by combining the AE statistical regularity. It indicates that the AE data in the non-decay creep process of salt rock can be divided into three stages. Furthermore, the authors propose a new creep-damage model of salt rock based on a fractional derivative. The parameters in the model were determined by the Quasi-Newton method. The fitting analysis suggests that the new creep-damage model provides a precise description of full creep regions in salt rock.

Suggested Citation

  • Hongwei Zhou & Di Liu & Gang Lei & Dongjie Xue & Yang Zhao, 2018. "The Creep-Damage Model of Salt Rock Based on Fractional Derivative," Energies, MDPI, vol. 11(9), pages 1-9, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2349-:d:168054
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    Citations

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    Cited by:

    1. Jianchao Cai & Shuyu Sun & Ali Habibi & Zhien Zhang, 2019. "Emerging Advances in Petrophysics: Porous Media Characterization and Modeling of Multiphase Flow," Energies, MDPI, vol. 12(2), pages 1-5, January.
    2. Haiyang Yi & Hongwei Zhou & Rui Wang & Di Liu & Jingyang Ding, 2018. "On the Relationship between Creep Strain and Permeability of Granite: Experiment and Model Investigation," Energies, MDPI, vol. 11(10), pages 1-15, October.

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