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Appears in Collections:Management, Work and Organisation Conference Papers and Proceedings
Peer Review Status: Refereed
Authors: Oraee, Kazem
Goodarzi, Arash
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Title: Mathematical Modeling of Coal Seam Methane Drainage in Longwall Mining
Citation: Oraee K & Goodarzi A (2010) Mathematical Modeling of Coal Seam Methane Drainage in Longwall Mining, 100 Years of Mining Research Symposium, Phoenix, Arizona.
Issue Date: 2010
Conference Name: 100 Years of Mining Research Symposium
Conference Location: Phoenix, Arizona
Abstract: Excessive emissions of methane from the coal seams can have a serious adverse effect on both safety and productivity of longwall coal faces. Mechanization of coal faces has increased production possibilities to the extent that normal ventilation systems may not be able to ventilate coal face areas in order to lower methane content in the air to within legal limits. Production increases may therefore be prohibited for this reason, especially in gassy seams. Methane drainage from the coal seam by means of long holes and before production starts can act as a useful remedial action. In this paper a two dimensional mathematical model has been produced. The model that is based on finite elements, simulates a methane drainage system where the resultant risk is linked to the coefficient of diffusion, coal permeability, holes pattern and the duration for which the seam is subject to drainage. It is concluded that methane drainage of this type can assist in achieving production increases in many coals seems, especially where high gas content is a virtue of the seam.
Type: Conference Paper
Status: Author Version
Rights: The publisher has not yet responded to our queries therefore this work cannot be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Management Work and Organisation
Ministry of Labor and Social Affairs, Iran

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