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

Phu Minh Vuong Nguyen, Andrzej Walentek, Krystian Wierzbiński and Marian Zmarzły
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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

Energies, 2022, vol. 15, issue 14, 1-20

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.

Keywords: methane hazard; absolute methane emission rate; destressing zone; numerical modelling; empirical method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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