Ventilation circuit for large and gassy longwall panels: an Australian perspective
2013 (English)In: Mining Technology, ISSN 1474-9009, E-ISSN 1743-2863, Vol. 122, no 4, 235-242 p.Article in journal (Refereed) Published
The current trend in Australian longwall mines is to increase panel dimensions and production rate, and mining in gassy regions. However, this trend poses a challenge to provide adequate ventilation to manage gas emissions. While the traditional two heading gateroad bleederless U ventilation circuit, which is the most commonly used circuit in Australia, is no longer suitable due to its low volumetric capacity, a few mines manage to overcome this problem by employing a three heading gateroad ventilation circuit. However, this circuit requires significant additional development, which makes it not popular in Australian coal mines. The aim of this paper is to review the suitability of two heading and three heading gateroad traditional bleederless U ventilation circuits for a large longwall panel mining in gassy conditions. It was found that significant predrainage of the thickest roof seam is required in order to make the two heading gateroad circuit feasible in large and gassy longwall panels.
Place, publisher, year, edition, pages
2013. Vol. 122, no 4, 235-242 p.
Ventilation, Longwall, Gas, Civil engineering and architecture - Geoengineering and mining engineering
Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik
Research subject Future mining (AERI); Mining and Rock Engineering
IdentifiersURN: urn:nbn:se:ltu:diva-15388DOI: 10.1179/1743286313Y.0000000043Local ID: ee45d7ec-78d1-4477-ac68-9719a1aed093OAI: oai:DiVA.org:ltu-15388DiVA: diva2:988362
Upprättat; 2013; 20160310 (adrhal)2016-09-292016-09-29