IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v14y2021i2p360-d478248.html
   My bibliography  Save this article

Analysis of Crack Initiation and Propagation Thresholds of Inclined Cracks under High-Pressure Grouting in Ordovician Limestone

Author

Listed:
  • Bin Xu

    (Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, China)

  • Shuning Dong

    (Xi’an Research Institute of China Coal Technology & Engineering Group Corp, Xi’an 710077, China)

  • Shangxian Yin

    (Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, China)

  • Shuxia Li

    (College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Yanling Xu

    (School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China)

  • Zhenxue Dai

    (College of Construction Engineering, Jilin University, Changchun 130026, China)

Abstract

Control of the grouting pressure within the critical grouting pressure for crack propagation in Ordovician limestone can not only ensure grout penetration length, but also prevent the risk of creating an artificial water channel. Based on the fracture mechanics theory, a formula was proposed to calculate the critical grouting pressure of mixed mode I-II cracks in Ordovician limestone. The necessary conditions for tilted crack opening, the rationality of the existing empirical value of the maximum allowable grouting pressure was investigated based on the mechanical model. The RFPA 2D -Flow numerical simulation software was used to evaluate the deduced theory. The research results show that the deduced theoretical calculation formula of the critical grouting pressure agrees with the numerical simulation results; when the mixed mode I-II fracture initiation occurs, the grouting pressure exceeds the perpendicular stress of the overlying rock; the greater the density of the overlying rock mass, the greater the value of grouting pressure for fracture initiation; when the side pressure coefficient was ≥1, crack dip angle increased and the grouting pressure for fracture initiation tended to decrease; and the empirical grouting pressure at the maximum allowable grouting pressure is 2.0–2.5 p w , which will not cause propagation and failure of the existing crack.

Suggested Citation

  • Bin Xu & Shuning Dong & Shangxian Yin & Shuxia Li & Yanling Xu & Zhenxue Dai, 2021. "Analysis of Crack Initiation and Propagation Thresholds of Inclined Cracks under High-Pressure Grouting in Ordovician Limestone," Energies, MDPI, vol. 14(2), pages 1-14, January.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:2:p:360-:d:478248
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/14/2/360/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/14/2/360/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Yanyan Peng & Qunchao Lin & Manchao He & Chun Zhu & Haijiang Zhang & Pengfei Guo, 2021. "Experimental Study on Infrared Temperature Characteristics and Failure Modes of Marble with Prefabricated Holes under Uniaxial Compression," Energies, MDPI, vol. 14(3), pages 1-16, January.

    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:14:y:2021:i:2:p:360-:d:478248. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.