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Developments in coal mine methane drainage and utilisation in Australia

Conference Paper


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Abstract


  • In recent years there has been significant development in the field of coalbed and coal mine methane drainage and

    utilisation in Australia. This development has, in part, been necessitated by the rapid increase in mine production capacity

    and the need to maintain the safety of the mine and its employees through effective management of coal seam gas emission and outburst risk. The increased awareness of the contribution of coal mine gas emission, estimated to account for 4-5% of Australia’s 559 million tonnes of CO2 equivalent (MtCO2-e) annual greenhouse gas (GHG) emissions, is placing additional pressure on operators to increase coal seam gas capture and emissions reduction measures.

    This paper discusses the various sources of gas emission from an operating underground coal mine, with particular focus on longwall mining which accounts for the majority of Australian underground coal production. A variety of gas drainage

    techniques, both from surface and from within operating underground mines, are described along with a range of

    commonly encountered problems that exist within coal mine gas drainage systems that prevent optimum drainage

    performance being achieved. Two variations of a new surface-based gas drainage system for the removal of goaf gas to

    improve longwall mine productivity and safety are described. This proposed new technique aims to cost effectively

    increase the total gas volume extracted from the goaf whilst maintaining a relatively consistent gas production rate

    throughout the operating life of the well. Various methods of coal mine methane gas utilisation are examined, including the

    capture and utilisation of low concentration methane present in mine ventilation air.

UOW Authors


Publication Date


  • 2009

Citation


  • Black, D. J. & Aziz, N. I. (2009). Developments in coal mine methane drainage and utilisation in Australia. Proceedings of the Ninth International Mine Ventilation Congress (pp. 1-12).

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4018&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3009

Abstract


  • In recent years there has been significant development in the field of coalbed and coal mine methane drainage and

    utilisation in Australia. This development has, in part, been necessitated by the rapid increase in mine production capacity

    and the need to maintain the safety of the mine and its employees through effective management of coal seam gas emission and outburst risk. The increased awareness of the contribution of coal mine gas emission, estimated to account for 4-5% of Australia’s 559 million tonnes of CO2 equivalent (MtCO2-e) annual greenhouse gas (GHG) emissions, is placing additional pressure on operators to increase coal seam gas capture and emissions reduction measures.

    This paper discusses the various sources of gas emission from an operating underground coal mine, with particular focus on longwall mining which accounts for the majority of Australian underground coal production. A variety of gas drainage

    techniques, both from surface and from within operating underground mines, are described along with a range of

    commonly encountered problems that exist within coal mine gas drainage systems that prevent optimum drainage

    performance being achieved. Two variations of a new surface-based gas drainage system for the removal of goaf gas to

    improve longwall mine productivity and safety are described. This proposed new technique aims to cost effectively

    increase the total gas volume extracted from the goaf whilst maintaining a relatively consistent gas production rate

    throughout the operating life of the well. Various methods of coal mine methane gas utilisation are examined, including the

    capture and utilisation of low concentration methane present in mine ventilation air.

UOW Authors


Publication Date


  • 2009

Citation


  • Black, D. J. & Aziz, N. I. (2009). Developments in coal mine methane drainage and utilisation in Australia. Proceedings of the Ninth International Mine Ventilation Congress (pp. 1-12).

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4018&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3009