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Analysis of the Impact of Auxiliary Ventilation Equipment on the Distribution and Concentration of Methane in the Tailgate

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  • Magdalena Tutak

    (Faculty of Mining and Geology, Silesian University of Technology, 44-100 Gliwice, Poland)

  • Jarosław Brodny

    (Faculty of Organization and Management, Silesian University of Technology, 44-100 Gliwice, Poland)

Abstract

Methane, which is commonly found in hard coal deposits, represents a considerable threat to the safety of mining operations in these deposits. The paper presents the results of tests, aiming to limit the negative impact of methane on hard coal exploitation and improve work safety. The tests encompassed an analysis of methane concentration distributions in the tailgate (in the intersection area with the longwall), with account being taken of auxiliary ventilation equipment. This equipment is responsible for reducing methane concentration levels in the intersection area between the longwall and the tailgate. The analyses presented in the article were conducted for a spatial model of a longwall area, using the Computational Fluid Dynamics (CFD) method. Account was taken of the real-world measurements of the headings as well as the measurement data concerning methane concentration and ventilation parameters. The tests took into account methane emissions from the mined coal and from the goaf with caving. The analyses were performed for the system with and without auxiliary equipment, for different velocities of the additional air stream. This made it possible to compare both systems and determine the impact of auxiliary equipment on the distribution and concentration of methane in the most vulnerable area of exploitation. The distributions of the air and gas mixture were also determined in the analysed headings and goaf with caving. The results obtained clearly demonstrate that using auxiliary equipment has a significant effect on the ventilation parameters of the air stream and leads to reduction in methane concentrations in the most vulnerable section of the longwall. These results also confirmed the advantages of auxiliary ventilation equipment, which should contribute to their wider application in underground hard coal exploitation.

Suggested Citation

  • Magdalena Tutak & Jarosław Brodny, 2018. "Analysis of the Impact of Auxiliary Ventilation Equipment on the Distribution and Concentration of Methane in the Tailgate," Energies, MDPI, vol. 11(11), pages 1-28, November.
  • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3076-:d:181377
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    References listed on IDEAS

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    1. Zhongwei Wang & Ting Ren & Liqiang Ma & Jian Zhang, 2018. "Investigations of Ventilation Airflow Characteristics on a Longwall Face—A Computational Approach," Energies, MDPI, vol. 11(6), pages 1-25, June.
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    Cited by:

    1. Dawid Szurgacz & Jarosław Brodny, 2019. "Tests of Geometry of the Powered Roof Support Section," Energies, MDPI, vol. 12(20), pages 1-19, October.
    2. Dawid Szurgacz & Sergey Zhironkin & Stefan Vöth & Jiří Pokorný & A.J.S. (Sam) Spearing & Michal Cehlár & Marta Stempniak & Leszek Sobik, 2021. "Thermal Imaging Study to Determine the Operational Condition of a Conveyor Belt Drive System Structure," Energies, MDPI, vol. 14(11), pages 1-18, June.
    3. Torgrim Log & Wegar Bjerkeli Pedersen, 2019. "A Common Risk Classification Concept for Safety Related Gas Leaks and Fugitive Emissions?," Energies, MDPI, vol. 12(21), pages 1-17, October.
    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. Rasa Smaliukiene & Svajone Bekesiene, 2020. "Towards Sustainable Human Resources: How Generational Differences Impact Subjective Wellbeing in the Military?," Sustainability, MDPI, vol. 12(23), pages 1-21, November.
    6. Ruipeng Tong & Yunyun Yang & Xiaofei Ma & Yanwei Zhang & Shian Li & Hongqing Yang, 2019. "Risk Assessment of Miners’ Unsafe Behaviors: A Case Study of Gas Explosion Accidents in Coal Mine, China," IJERPH, MDPI, vol. 16(10), pages 1-18, May.
    7. Wenbing Guo & Mingjie Guo & Yi Tan & Erhu Bai & Gaobo Zhao, 2019. "Sustainable Development of Resources and the Environment: Mining-Induced Eco-Geological Environmental Damage and Mitigation Measures—A Case Study in the Henan Coal Mining Area, China," Sustainability, MDPI, vol. 11(16), pages 1-34, August.
    8. Magdalena Tutak, 2019. "The Influence of the Permeability of the Fractures Zone Around the Heading on the Concentration and Distribution of Methane," Sustainability, MDPI, vol. 12(1), pages 1-24, December.
    9. Lin Li & Tiantian Liu & Zhiqiang Li & Xiangjun Chen & Lin Wang & Shuailong Feng, 2023. "Different Prevention Effects of Ventilation Dilution on Methane Accumulation at High Temperature Zone in Coal Mine Goafs," Energies, MDPI, vol. 16(7), pages 1-18, March.
    10. Huiuk Yi & Minsik Kim & Dongkil Lee & Jongmyung Park, 2022. "Applications of Computational Fluid Dynamics for Mine Ventilation in Mineral Development," Energies, MDPI, vol. 15(22), pages 1-24, November.
    11. Magdalena Tutak & Jarosław Brodny & Dawid Szurgacz & Leszek Sobik & Sergey Zhironkin, 2020. "The Impact of the Ventilation System on the Methane Release Hazard and Spontaneous Combustion of Coal in the Area of Exploitation—A Case Study," Energies, MDPI, vol. 13(18), pages 1-31, September.

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