IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v14y2021i4p1027-d500092.html
   My bibliography  Save this article

Computational Fluid Dynamics Simulations for Investigation of the Damage Causes in Safety Elements of Powered Roof Supports—A Case Study

Author

Listed:
  • Janina Świątek

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

  • Tomasz Janoszek

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

  • Tomasz Cichy

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

  • Kazimierz Stoiński

    (Department of Mechanical Devices Testing and Rocks, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland)

Abstract

The paper describes a case study of the safety hydraulic system damage in the working of a longwall in a Polish coal mine. The safety elements are a component of the powered roof supports which secure the shield against damage during rock burst incidents. The damage event, which occurred in the hydraulic system during the mining process, caused the uncontrolled lowering of the powered roof support height during the mining process. The uncontrolled lowering of a shield may cause the danger of the loss of the stability along the longwall working in the form of a rock burst and collapses and may represent a serious and immediate danger to the safety and health of employees. Based on the results of the computational fluid dynamics methods (CFD) analysis of the safety elements in the hydraulic system of longwall 2-leg shield, the causes of damage were diagnosed and presented. The CFD and the strength analysis by the finite element method (FEM) were used for numerical modeling. The diagrams and maps of changes of parameters having an impact on the damage mechanism in safety elements of the hydraulic leg were developed based on the results of model tests. The forecasted values of stress distributions in the safety system of the hydraulic leg have made it possible to identify the reasons of the damage causes, verified by real observations.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:1027-:d:500092
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/14/4/1027/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/14/4/1027/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Dawid Szurgacz & Jarosław Brodny, 2020. "Adapting the Powered Roof Support to Diverse Mining and Geological Conditions," Energies, MDPI, vol. 13(2), pages 1-22, January.
    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. Dawid Szurgacz, 2021. "Dynamic Analysis for the Hydraulic Leg Power of a Powered Roof Support," Energies, MDPI, vol. 14(18), pages 1-12, September.
    2. 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.
    3. 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.
    4. 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.
    5. 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.
    6. 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.

    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. Peng Li & Xingping Lai & Peilin Gong & Chao Su & Yonglu Suo, 2020. "Mechanisms and Applications of Pressure Relief by Roof Cutting of a Deep-Buried Roadway near Goafs," Energies, MDPI, vol. 13(21), pages 1-16, November.
    3. Xiaoping Xie & Hongyang Liu & Xinqiu Fang & Junwei Yang & Jiangang Liu & Minfu Liang & Gang Wu, 2023. "Deformation Mechanism and Control Technology of Surrounding Rock of Three-Soft Coal Roadways under High Horizontal Stress," Energies, MDPI, vol. 16(2), pages 1-23, January.
    4. Dawid Szurgacz & Sergey Zhironkin & Michal Cehlár & Stefan Vöth & Sam Spearing & Ma Liqiang, 2021. "A Step-by-Step Procedure for Tests and Assessment of the Automatic Operation of a Powered Roof Support," Energies, MDPI, vol. 14(3), pages 1-16, January.
    5. Sergey Zhironkin & Alexey Selyukov & Magerram Gasanov, 2020. "Parameters of Transition from Deepening Longitudinal to Continuous Lateral Surface Mining Methods to Decrease Environmental Damage in Coal Clusters," Energies, MDPI, vol. 13(13), pages 1-22, June.
    6. Dejian Ma & Xin Zhang & Lirong Wan & Qingliang Zeng & Hongen Ge, 2020. "Dynamic Analysis of Shearer Traction Unit Considering the Longitudinal Swing," Energies, MDPI, vol. 13(20), pages 1-15, 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:jeners:v:14:y:2021:i:4:p:1027-:d:500092. 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.