IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i12p4252-d835136.html
   My bibliography  Save this article

Research on Directional Controllability of Cracking in Hydraulic Fracturing of Hard Overburden Based on Local Stress Field Intervention

Author

Listed:
  • Dingchao Chen

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

  • Xiangyu Wang

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

  • Feiteng Zhang

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

  • Menglong Li

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

  • Xiangqian Zhao

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

  • Guanjun Li

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

  • Yang Yu

    (College of Civil Engineering, Xuzhou University of Technology, Xuzhou 221111, China)

  • Guanghui Wang

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

  • Jiaxin Zhao

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

  • Xiangdong Wang

    (School of Mines, China University of Mining & Technology, Xuzhou 221116, China)

Abstract

As a widely-used method of digging roadways in China, gob-side entry driving features specific advantages, such as a high recovery rate and good isolation effects. However, under the condition of hard overburden, the excessive bearing pressure of small coal pillars will easily cause serious internal damage in the coal and the run-through of the plastic zone, leading to harmful gas leakage in the goaf. Therefore, based on the engineering background of small coal pillars in the 18506 working face of Xiqu Coal Mine, this paper comprehensively adopts theoretical analysis, numerical simulation, industrial tests, and other methods, analyzes the evolution mechanism of isolated bearing and plastic fracture areas of small coal pillar under hard overburden, studies the influence law of hard overburden cutting parameters on the isolation and stability of small coal pillars, and puts forward the technology of actively cutting the top to weaken the stress concentration of coal pillars under hard overburden. With the reasonable cutting parameters determined, the controllable mechanism of hydraulic fracturing cutting under hard overburden further revealed, and the hydraulic fracturing cutting technology with “controllable cutting orientation of hydraulic fracturing with local stress field intervention” formed as the basic core, the stress situation on the roof is improved, realizing the stability control of the coal pillars for the roadway protection, and avoiding gas leakage and other disasters caused by small coal pillar destruction.

Suggested Citation

  • Dingchao Chen & Xiangyu Wang & Feiteng Zhang & Menglong Li & Xiangqian Zhao & Guanjun Li & Yang Yu & Guanghui Wang & Jiaxin Zhao & Xiangdong Wang, 2022. "Research on Directional Controllability of Cracking in Hydraulic Fracturing of Hard Overburden Based on Local Stress Field Intervention," Energies, MDPI, vol. 15(12), pages 1-21, June.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:12:p:4252-:d:835136
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/12/4252/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/12/4252/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Junwen Zhang, 2019. "Stability of Split-Level Gob-Side Entry in Ultra-Thick Coal Seams: A Case Study at Xiegou Mine," Energies, MDPI, vol. 12(4), pages 1-12, February.
    2. Yang Yu & Xiangyu Wang & Jianbiao Bai & Lianying Zhang & Hongchun Xia, 2020. "Deformation Mechanism and Stability Control of Roadway Surrounding Rock with Compound Roof: Research and Applications," Energies, MDPI, vol. 13(6), pages 1-19, March.
    Full references (including those not matched with items on IDEAS)

    Citations

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


    Cited by:

    1. Yongqiang Zhang & Xiangyu Wang & Feiteng Zhang & Menglong Li & Guanghui Wang & Dingchao Chen & Guanjun Li & Xiangqian Zhao, 2023. "Retracement Ground Pressure Appearance and Control of the Working Face under the Overlying Residual Pillar: A Case Study," Energies, MDPI, vol. 16(4), pages 1-21, February.

    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. Yang Yu & Jianbiao Bai & Xiangyu Wang & Lianying Zhang, 2020. "Control of the Surrounding Rock of a Goaf-Side Entry Driving Heading Mining Face," Sustainability, MDPI, vol. 12(7), pages 1-16, March.
    2. Xiaowei Guo & Xigui Zheng & Peng Li & Rui Lian & Cancan Liu & Niaz Muhammad Shahani & Cong Wang & Boyang Li & Wenjie Xu & Guowei Lai, 2021. "Full-Stress Anchoring Technology and Application of Bolts in the Coal Roadway," Energies, MDPI, vol. 14(22), pages 1-24, November.

    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:12:p:4252-:d:835136. 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.