A proper borehole pattern design for coal seam methane drainage in Tabas coal mine using Comsol Multiphysics

• Autorzy: Bagherzadeh Ali , Najafi Mehd , Marji Mohammad Fatehi , Noroozi Mehdi

Identyfikatory

DOI

10.46873/2300-3960.1347

• Języki publikacji: EN

Abstrakty

EN

Optimizing the operational parameters of the borehole pattern in the coal seam includes the maximum amount of gas to be drained with the least amount of drilling, investment, and drainage time. The main purpose of this research is to properly design the drainage borehole pattern in the C1 coal seam of the Tabas coal mine. In this research, the Comsol Multiphysics software was used for numerical modeling of the boreholes. According to the method of diffusion of methane gas in a coal seam, the reduction of methane gas concentration and the amount of gas released from the coal blocks were approximated. For the gas drainage boreholes, the three patterns of the rectangular, parallelogram, and triangular forms were considered. Also, the boreholes were modeled with the three diameters of 76, 86, and 96 mm. This modeling was performed for 180 days of drainage operation and showed that the triangular pattern was more suitable than the other two patterns. The presented model is applicable in coal mines where gas drainage operations are necessary and helps engineers design the patterns of drainage boreholes to maximize their gas drainage efficiency.

Słowa kluczowe

EN

numerical modelling; borehole patterns; COMSOL Multiphysics; CFD simulation; coal gas drainage

PL

modelowanie numeryczne; schematy otworów wiertniczych; COMSOL Multiphysics; symulacja CFD; odmetanowanie

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2022
• Tom: Vol. 21, iss. 1
• Strony: 54--64
• Opis fizyczny: Bibliogr. 21 poz.

Twórcy

autor

Bagherzadeh Ali

• M.Sc. graduated in mining exploitation, Department of Mining and Metallurgical Eng., Yazd University, Yazd, Iran

autor

Najafi Mehd

• Department of Mining and Metallurgical Eng., Yazd University, Safayieh

• https://orcid.org/0000-0002-1609-3702

autor

Marji Mohammad Fatehi

• Professor, Department of Mining and Metallurgical Eng., Yazd University, Yazd, Iran

• https://orcid.org/0000-0003-2917-6264

autor

Noroozi Mehdi

• Assistant Professor, Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Iran

• https://orcid.org/0000-0001-6206-8121

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).