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Prediction of the Absolute Methane Emission Rate for Longwall Caving Extraction Based on Rock Mass Modelling—A Case Study

Author

Listed:
  • Phu Minh Vuong Nguyen

    (Central Mining Institute, 1 Gwarków Sq., 40-166 Katowice, Poland)

  • Andrzej Walentek

    (Central Mining Institute, 1 Gwarków Sq., 40-166 Katowice, Poland)

  • Krystian Wierzbiński

    (Central Mining Institute, 1 Gwarków Sq., 40-166 Katowice, Poland)

  • Marian Zmarzły

    (Jastrzębska Spółka Węglowa S.A., 4 Jana Pawła II St., 44-330 Jastrzębie-Zdrój, Poland)

Abstract

This article presents a methodology for predicting the absolute methane emission rate for longwall caving extraction based on the determination of destressing zones generated by longwall mining operations, by means of numerical modelling. This methodology was applied for the conditions of the K-2 longwall panel in the KWK Pniówek mine. The finite difference method code FLAC2D was employed as an element of the methodology to determine the destressing zones. All results including the numerical modelling results, empirical results and the measured (in situ) results were gathered in the comparative analysis. As the final results, the accuracy and reliability of the proposed methodology were evaluated.

Suggested Citation

  • Phu Minh Vuong Nguyen & Andrzej Walentek & Krystian Wierzbiński & Marian Zmarzły, 2022. "Prediction of the Absolute Methane Emission Rate for Longwall Caving Extraction Based on Rock Mass Modelling—A Case Study," Energies, MDPI, vol. 15(14), pages 1-20, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:4958-:d:857297
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    Cited by:

    1. Nikodem Szlązak & Justyna Swolkień & Paweł Kamiński, 2022. "Design of Coal Seam Exploitation in Methane Hazard Conditions: A Case Study," Energies, MDPI, vol. 16(1), pages 1-19, December.

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