Methane hazard during the closure of mine excavations in liquidated mine – numerical simulation

• Autorzy: Dziurzyński Wacław , Krawczyk Jerzy , Pałka Teresa , Krach Andrzej , Skotniczny Przemysław

Identyfikatory

DOI

10.24425/ams.2023.146866

• Języki publikacji: EN

Abstrakty

EN

The closure of deep mines, featuring multi level seam extraction, lasts many years. During this time period, the ventilation system must ensure adequate working conditions, and ensure the safety and stability of fan operation in gas and fire hazards conditions. The analysis of air flows and methane inflows during the progress of mining mine excavations closure, is the primary object of the article. Execution of such analysis requires knowledge of the mining mine excavations’ closure schedule, the structure of the ventilation system under consideration, the values of the parameters describing the air flows delivered to the mine excavations, and the current characteristics of operating fans and predicted methane exhalation. A computer database, currently being updated by a mine ventilation department for the VentGraph-Plus computer software, has been used simulate the various ventilation scenarios experienced, during the final stage of closure, including the shutdown of the main fans and the backfilling of shafts. The results of case study, containing 2 variants of simulated examples, are presented in the form of diagrams of methane concentration changes in time at characteristic places of the mine. The completed simulations of ventilation processes during the closure of mine excavations and transfer of inflowing methane, indicate useful possibilities of the computational tool used.

Słowa kluczowe

EN

mine closure; mine ventilation; network simulator; methane hazard; shut down of main fans

PL

kopalnia; wentylacja kopalni; zagrożenie metanowe

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2023
• Tom: Vol. 68, no. 3
• Strony: 525--538
• Opis fizyczny: Bibliogr. 31 poz., rys., wykr.

Twórcy

autor

Dziurzyński Wacław

• Strata Mechanics Research Institutes of Polish Academy of Science, 27 Reymonta Str., 30-059 Kraków, Poland

• https://orcid.org/0000-0003-1441-9219

autor

Krawczyk Jerzy

• Strata Mechanics Research Institutes of Polish Academy of Science, 27 Reymonta Str., 30-059 Kraków, Poland

• https://orcid.org/0000-0002-9737-3369

autor

Pałka Teresa

• Strata Mechanics Research Institutes of Polish Academy of Science, 27 Reymonta Str., 30-059 Kraków, Poland

• https://orcid.org/0000-0003-2135-4193

autor

Krach Andrzej

• Strata Mechanics Research Institutes of Polish Academy of Science, 27 Reymonta Str., 30-059 Kraków, Poland

• https://orcid.org/0000-0002-9184-7068

autor

Skotniczny Przemysław

• Strata Mechanics Research Institutes of Polish Academy of Science, 27 Reymonta Str., 30-059 Kraków, Poland

• https://orcid.org/0000-0001-5699-3775

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)