Ventilation circuit for large and gassy longwall panels – an Australian perspective
MetadataShow full item record
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.
Showing items related by title, author, creator and subject.
Cheng, Jianwei; Wu, Y.; Xu, H.; Liu, J.; Yang, Y.; Deng, H.; Wang, Y. (2014)© 2014 Elsevier Ltd. Since the beginning of mining, the problems induced by ventilation in underground coal mining practices have prompted great needs of reliable consulting tools to assist mining engineers, government ...
Cheng, Jianwei; Li, S.; Zhang, F.; Zhao, C.; Yang, S.; Ghosh, A. (2016)© 2016 Elsevier Ltd. Mining coal seams with high coal gas content and coal spontaneous combustion (SponCom) risk is often a challenge for mining engineers. Control measures for maintaining the gas concentration under the ...
Wei, L.; Zhou, F.; Cheng, Jianwei; Luo, X.; Li, X. (2015)© 2015 Wiley Periodicals, Inc. The mine ventilation system is most important and technical measure for ensuring safety production in mines. The structural complexity of a mine ventilation network can directly affect the ...