IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v12y2019i19p3623-d269866.html
   My bibliography  Save this article

Application of Shallow-Hole Blasting in Improving the Stability of Gob-Side Retaining Entry in Deep Mines: A Case Study

Author

Listed:
  • Yong Chen

    (State Key Laboratory of Coal Resource and Safe Mining, China University of Mining and Technology, Xuzhou 221008, China)

  • Shuqi Ma

    (State Key Laboratory of Coal Resource and Safe Mining, China University of Mining and Technology, Xuzhou 221008, China
    Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China)

  • Yugui Yang

    (State Key Laboratory for Geomechanics and Deep Underground Engineering; China University of Mining and Technology, Xuzhou 221008, China)

  • Ningkang Meng

    (State Key Laboratory of Coal Resource and Safe Mining, China University of Mining and Technology, Xuzhou 221008, China)

  • Jianbiao Bai

    (State Key Laboratory of Coal Resource and Safe Mining, China University of Mining and Technology, Xuzhou 221008, China)

Abstract

The hanging of hard roof strata in the gob-side retaining entry in deep mines could lead to dynamic disasters. The pressure relief mechanism for the hard roof strata using shallow-hole blasting was investigated by a combined method of theoretical analysis, numerical simulation, and field test in the Sanhejian coal mine. The shallow-hole blasting model was established using LS-DYNA3D (Livemore software of explicit dynamics analysis code). The evolution and propagation law of effective stress induced by shallow-hole blasting was analyzed. The parameters related to shallow-hole blasting were determined via a combined method of numerical analysis and theoretical calculations. These were applied to the field tests. The effect of shallow-hole blasting on the strata control of deep gob-side retaining entry was studied by comparing two scenarios in the field: a deep gob-side retaining entry with and without shallow-hole blasting. It was found that the convergences of the entry decreased due to the shallow-hole blasting. This indicates that shallow-hole blasting is a good technique to maintain the stability of the gob-side retaining entry with a hard roof in deep mines.

Suggested Citation

  • Yong Chen & Shuqi Ma & Yugui Yang & Ningkang Meng & Jianbiao Bai, 2019. "Application of Shallow-Hole Blasting in Improving the Stability of Gob-Side Retaining Entry in Deep Mines: A Case Study," Energies, MDPI, vol. 12(19), pages 1-16, September.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:19:p:3623-:d:269866
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/12/19/3623/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/12/19/3623/
    Download Restriction: no
    ---><---

    Citations

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


    Cited by:

    1. Hui Liu & Zhenhua Jiang & Wansheng Chen & Fei Chen & Fenglin Ma & Donghao Li & Zhaoyang Liu & Hongke Gao, 2022. "A Simulation Experimental Study on the Advance Support Mechanism of a Roadway Used with the Longwall Coal Mining Method," Energies, MDPI, vol. 15(4), pages 1-10, February.

    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:12:y:2019:i:19:p:3623-:d:269866. 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.