IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i5p1803-d761172.html
   My bibliography  Save this article

Numerical Simulation of the Impact of Unmined Longwall Panel on the Working Stability of a Longwall Using UDEC 2D—A Case Study

Author

Listed:
  • Sylwester Rajwa

    (Department of Extraction Technologies, Rockburst and Risk Assessment, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland)

  • Tomasz Janoszek

    (Department of Extraction Technologies, Rockburst and Risk Assessment, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland)

  • Janina Świątek

    (Department of Extraction Technologies, Rockburst and Risk Assessment, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland)

  • Andrzej Walentek

    (Department of Extraction Technologies, Rockburst and Risk Assessment, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland)

  • Dominik Bałaga

    (KOMAG Institute of Mining Technology, Division of Machines and Devices, Pszczyńska 37, 44-100 Gliwice, Poland)

Abstract

The main goal of the paper is numerical simulation for investigation of damage causes in the working of a longwall located under the unmined longwall panel. The paper presents the results of model-based research on the stability of the roof of a longwall working in a zone subject to cave-in mining, taking into account the influence of mining conditions in the form of an unmined coal seam located 115 m above the exploited seam. It presents the geometry of the rock mass under study, the discretization area of the solution, and gives an overview of the assumptions used to build the numerical model. The authors discuss the results of numerical simulations of the influence of mining phenomena on the formation of roof falls in the longwall. Based on the results of numerical simulations, the process of identifying the size of roof falls in a longwall working (loss of stability) was carried out through their appropriate classification. The case presented and analyzed in this paper occurred in one of Poland’s coal mines.

Suggested Citation

  • Sylwester Rajwa & Tomasz Janoszek & Janina Świątek & Andrzej Walentek & Dominik Bałaga, 2022. "Numerical Simulation of the Impact of Unmined Longwall Panel on the Working Stability of a Longwall Using UDEC 2D—A Case Study," Energies, MDPI, vol. 15(5), pages 1-19, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1803-:d:761172
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/5/1803/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/5/1803/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Jun Yang & Hongyu Wang & Yajun Wang & Binhui Liu & Shilin Hou & Yu Cheng, 2019. "Stability Analysis of the Entry in a New Mining Approach Influenced by Roof Fracture Position," Sustainability, MDPI, vol. 11(22), pages 1-16, November.
    2. Takashi Sasaoka & Pisith Mao & Hideki Shimada & Akihiro Hamanaka & Jiro Oya, 2020. "Numerical Analysis of Longwall Gate-Entry Stability under Weak Geological Condition: A Case Study of an Indonesian Coal Mine," Energies, MDPI, vol. 13(18), pages 1-15, September.
    3. Janina Świątek & Tomasz Janoszek & Tomasz Cichy & Kazimierz Stoiński, 2021. "Computational Fluid Dynamics Simulations for Investigation of the Damage Causes in Safety Elements of Powered Roof Supports—A Case Study," Energies, MDPI, vol. 14(4), pages 1-20, February.
    4. Xinshuai Shi & Hongwen Jing & Zhenlong Zhao & Yuan Gao & Yuanchao Zhang & Ruodi Bu, 2020. "Physical Experiment and Numerical Modeling on the Failure Mechanism of Gob-Side Entry Driven in Thick Coal Seam," Energies, MDPI, vol. 13(20), pages 1-24, October.
    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. Yulong Chen & Junwen Zhang & Jianhang Chen & Xuejie Deng, 2022. "Special Issue: Rock Burst Disasters in Coal Mines," Energies, MDPI, vol. 15(13), pages 1-6, July.

    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. Qingliang Zeng & Zhaoji Li & Lirong Wan & Dejian Ma & Jiantao Wang, 2022. "Research on Dynamic Characteristics of Canopy and Column of Hydraulic Support under Impact Load," Energies, MDPI, vol. 15(13), pages 1-20, June.
    2. Dawid Szurgacz & Beata Borska & Sergey Zhironkin & Ryszard Diederichs & Anthony J. S. Spearing, 2022. "Optimization of the Load Capacity System of Powered Roof Support: A Review," Energies, MDPI, vol. 15(16), pages 1-15, August.
    3. Shengrong Xie & Fangfang Guo & Yiyi Wu, 2022. "Control Techniques for Gob-Side Entry Driving in an Extra-Thick Coal Seam with the Influence of Upper Residual Coal Pillar: A Case Study," Energies, MDPI, vol. 15(10), pages 1-21, May.
    4. Dawid Szurgacz, 2021. "Dynamic Analysis for the Hydraulic Leg Power of a Powered Roof Support," Energies, MDPI, vol. 14(18), pages 1-12, September.
    5. Guang Li & Fengshan Ma & Jie Guo & Haijun Zhao, 2021. "Case Study of Roadway Deformation Failure Mechanisms: Field Investigation and Numerical Simulation," Energies, MDPI, vol. 14(4), pages 1-15, February.
    6. Sari Melati & Ridho Kresna Wattimena & David Prambudi Sahara & Syafrizal & Ganda Marihot Simangunsong & Wahyu Hidayat & Erwin Riyanto & Raden Roro Shinta Felisia, 2022. "Block Caving Mining Method: Transformation and Its Potency in Indonesia," Energies, MDPI, vol. 16(1), pages 1-36, December.
    7. Pengze Liu & Lin Gao & Pandong Zhang & Guiyi Wu & Yongyin Wang & Ping Liu & Xiangtao Kang & Zhenqian Ma & Dezhong Kong & Sen Han, 2022. "Physical Similarity Simulation of Deformation and Failure Characteristics of Coal-Rock Rise under the Influence of Repeated Mining in Close Distance Coal Seams," Energies, MDPI, vol. 15(10), pages 1-13, May.
    8. Dawid Szurgacz & Beata Borska & Ryszard Diederichs & Anthony J. S. Spearing & Sergey Zhironkin, 2023. "Minimizing Internal Leaks of a Powered Roof Support’s Hydraulic Prop Based on Double Block with Charging," Energies, MDPI, vol. 16(3), pages 1-14, January.
    9. Hiroto Hashikawa & Pisith Mao & Takashi Sasaoka & Akihiro Hamanaka & Hideki Shimada & Ulaankhuu Batsaikhan & Jiro Oya, 2022. "Numerical Simulation on Pillar Design for Longwall Mining under Weak Immediate Roof and Floor Strata in Indonesia," Sustainability, MDPI, vol. 14(24), pages 1-13, December.
    10. Lirong Wan & Xuehui Yu & Dejian Ma & Zhaosheng Meng & Qingliang Zeng & Guoqing Qi, 2022. "Dynamic Response Analysis of a Novel Anti-Impact Pressure Balance Jack," Energies, MDPI, vol. 15(14), pages 1-15, July.

    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:5:p:1803-:d:761172. 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.