Document Type

Conference Paper

Publication Date


Publication Details

Mark Blanch, Outburst thresholds – misconceptions, criticisms and context, in Naj Aziz and Bob Kininmonth (eds.), Proceedings of the 17th Coal Operators' Conference, Mining Engineering, University of Wollongong, 8-10 February 2017, 350-359.


This paper describes the origins of outburst thresholds and considers the role gas content and gas desorption rate measurements play in outburst management systems employed in the Australian underground coal industry. It considers and provides context around criticism of simplicity, conservatism and the scientific basis of gas content thresholds and desorption rate indices. The validity of increasing thresholds based on reduced advance rates is questioned as is our ability to predict outbursts and the magnitude of those events.