Skip to main content
Conference Proceedings

Australian Mine Ventilation Conference 2017

Conference Proceedings

Australian Mine Ventilation Conference 2017

PDF Subscribe Add to cart

Gas reservoir and emission modelling to evaluate gas drainage to control tailgate gas concentration and fugitive emissions

The process of longwall coal extraction coal causes fractures in the overlying and underlying strata and these fractures become pathways for gas released from adjacent coal seams to flow into the mine workings and contaminate the ventilation air. If the rate of gas emission exceeds the diluting capacity of the ventilation air, the gas concentration will increase and exceed the statutory limit resulting in production delays.All potential gas sources within the planned mining area, including coal seams located above and below the working seam, should be identified and sufficient gas data collected and used to determine the specific gas emission from each gas source. Gas reservoir and emission modelling is recommended to determine specific gas emission and changes in gas emission from individual sources over the planned mining area. Accurate gas reservoir and emission modelling provides the information required to accurately design gas drainage programs to effectively manage gas emissions and minimise the risk of gas-outs'.Given the increasing occurrence of incidents of gas concentration in ventilation air exceeding the 2.0percent statutory limit and changes to mine plans to avoid difficult-to-drain' areas, it is apparent that many operations are not effectively utilising gas reservoir and emission modelling to identify high gas emission areas and are not completing sufficient gas drainage in advance of planned mining.The process of gas reservoir and emission modelling to support gas drainage design to control tailgate gas concentration and fugitive emissions is presented and discussed.CITATION:Black, D J, 2017. Gas reservoir and emission modelling to evaluate gas drainage to control tailgate gas concentration and fugitive emissions, in Proceedings Australian Mine Vent Conference 2017, pp 65-72 (The Australasian Institute of Mining and Metallurgy: Melbourne).
Return to parent product
  • Gas reservoir and emission modelling to evaluate gas drainage to control tailgate gas concentration and fugitive emissions
    PDF
    This product is exclusive to Digital library subscription
    Subscribe
  • Gas reservoir and emission modelling to evaluate gas drainage to control tailgate gas concentration and fugitive emissions
    PDF
    Normal price $22.00
    Member price from $0.00
    Add to cart

    Fees above are GST inclusive

PD Hours
Approved activity
  • Published: 2016
  • PDF Size: 0.917 Mb.
  • Unique ID: P201704011

Our site uses cookies

We use these to improve your browser experience. By continuing to use the website you agree to the use of cookies.