IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i19p7030-d924422.html
   My bibliography  Save this article

Experimental Study on Deformation Behavior and Permeability Evolution of Sandstone Responding to Mining Stress

Author

Listed:
  • Yang Liu

    (State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science & Technology, Huainan 232001, China
    Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, China
    School of Mining, Anhui University of Science & Technology, Huainan 232001, China)

  • Tong Zhang

    (Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, China
    School of Mining, Anhui University of Science & Technology, Huainan 232001, China)

  • Jun Wu

    (State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science & Technology, Huainan 232001, China
    Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, China)

  • Zhengyang Song

    (State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science & Technology, Huainan 232001, China
    School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Fei Wang

    (State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science & Technology, Huainan 232001, China
    Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, China)

Abstract

Mining-induced hydromechanical behavior of sandstone is critical to mining safety and disaster prevention. To investigate the evolution behavior of the mechanical and permeability properties of sandstone, mining-induced stress was imitated by increasing axial stress and decreasing confining stress, and a set of hydromechanical experiments were further performed, incorporating the effect of in situ stress, pore pressure, and mining stress. The results show the similar variation tendencies of the deformation and permeability of sandstone under different loading paths of in situ stress and pore pressure. Most sandstone samples maintain a compression state for the peak stress condition. The failure mode evolved from shear failure to shear–tension failure with the increase in in situ stress. The stress-relief effect significantly effects the permeability, since the permeability of sandstone increases exponentially with decreasing effective confining stress. The growth rate of permeability in Stage II is significantly greater than that in Stage I. One order of magnitude of permeability was presented at the peak stress situation. A fitting exponential model based on the alteration of effective confining stress was proposed to describe the permeability evolution dominated by the stress-relief effect, and the discovered permeability model can accurately describe the experimental results. The research results provide significant guidance for understanding the hydromechanical behavior and water hazard prevention for underground coal mines.

Suggested Citation

  • Yang Liu & Tong Zhang & Jun Wu & Zhengyang Song & Fei Wang, 2022. "Experimental Study on Deformation Behavior and Permeability Evolution of Sandstone Responding to Mining Stress," Energies, MDPI, vol. 15(19), pages 1-17, September.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7030-:d:924422
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/19/7030/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/15/19/7030/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Yang Liu & Tong Zhang & Yankun Ma & Shuaibing Song & Ming Tang & Yanfang Li, 2022. "Deformation behavior and damage-induced permeability evolution of sandy mudstone under triaxial stress," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 113(3), pages 1729-1749, September.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Junhuan Lei & Zhaoping Meng & Zhen Shen & Haoyue Chen, 2023. "Experimental study on water saturation effect on coal sample permeability under different effective stresses," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 116(3), pages 3139-3163, April.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7030-:d:924422. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.