IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i8p4848-d796440.html
   My bibliography  Save this article

Determination of Narrow Coal Pillar Width and Roadway Surrounding Rock Support Technology in Gob Driving Roadway

Author

Listed:
  • Qingliang Chang

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

  • Shiguo Ge

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

  • Xianyuan Shi

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

  • Yesong Sun

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

  • Haibin Wang

    (Huaneng Lingtai ShaoZhai Coal Industry Co., Ltd., Pingliang 744400, China)

  • Mengda Li

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

  • Yizhe Wang

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

  • Fengfeng Wu

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

Abstract

In order to determine the rational width of coal pillars and study the surrounding rock control technology of gob side entry driving with a narrow coal pillar, this paper first calculates the width of narrow coal pillar according to limit equilibrium theory; after that, the lateral support pressure and plastic zone development of the goaf is analyzed by numerical simulation to determine the rational width of reserved coal pillar; finally, through the ring breaking deformation regulation of surrounding rock of the gob side entry, the deformation and failure characteristics of the gob-side roadway during excavation and the influence of mining on the deformation and failure of the gob-side roadway are analyzed. The research results show that, combined with theoretical analysis and numerical simulation, the width of narrow coal pillar is decided to be 10 m; the deformation of the coal pillar side of the gob side roadway is much bigger than the roof subsidence, the deformation of the solid coal wall and the floor deformation; after the bolt support design of the gob side roadway, the deformation and damage of the gob side roadway during the driving period is small; during mining, the deformation of the narrow coal pillar wall is the key factor to determine the stability of the gob roadway; under the bolt support scheme, the overall deformation and failure of surrounding rock of the goaf roadway is small, and the control effect of the surrounding rock of the goaf roadway is good.

Suggested Citation

  • Qingliang Chang & Shiguo Ge & Xianyuan Shi & Yesong Sun & Haibin Wang & Mengda Li & Yizhe Wang & Fengfeng Wu, 2022. "Determination of Narrow Coal Pillar Width and Roadway Surrounding Rock Support Technology in Gob Driving Roadway," Sustainability, MDPI, vol. 14(8), pages 1-14, April.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:8:p:4848-:d:796440
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/8/4848/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/8/4848/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Qingliang Chang & Yifeng Sun & Qiang Leng & Zexu Liu & Huaqiang Zhou & Yuantian Sun, 2021. "Stability Analysis of Paste Filling Roof by Cut and Fill Mining," Sustainability, MDPI, vol. 13(19), pages 1-14, September.
    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. Changhao Shan & Shenggen Cao & Zeyu Zhang & Kewen Lin & Jialong Sun, 2023. "Numerical Investigation on the Yield Pillar Bearing Capacity under the Two-End-Type Cable Reinforcement," Energies, MDPI, vol. 16(18), pages 1-17, September.
    2. Huaidong Liu & Changyou Liu & Ya’nan Dong, 2022. "Theoretical Study on the Mechanism of Asymmetrical Large Deformation of Heading Roadway Facing Mining," Sustainability, MDPI, vol. 14(22), pages 1-22, November.

    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. Bin Han & Kun Ji & Jiandong Wang & Shibo Wang & Peng Zhang & Yafei Hu, 2022. "Determination of the Required Strength of Artificial Roof for the Underhand Cut-and-Fill Mine Using Field Measurements and Theoretical Analysis," Sustainability, MDPI, vol. 15(1), pages 1-16, December.
    2. Jiazeng Cao & Tao Wang & Chuanqi Zhu & Jianxin Yu & Xu Chen & Xin Zhang, 2023. "Identification Method of Optimal Copula Correlation Characteristic for Geological Parameters of Roof Structure," Sustainability, MDPI, vol. 15(20), pages 1-18, October.

    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:jsusta:v:14:y:2022:i:8:p:4848-:d:796440. 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.