Simulation experiment of coal and gas outburst under non-uniform load
Abstract：Coal and gas outburst simulation test device was applied to simulate coal and gas outburst under conditions of different stress in stress-concentrated area in order to study how the stress change in stress concentration zone may influence coal and gas outburst properties.The analysis of experimental results show that the change in stress of stress concentration zone plays an important role in coal and gas outburst,the concrete manifestation of which are as follows：with stress increase in stress concentration zone,the intensity of coal and gas outburst increases,meanwhile,crushing effect of coal thrown out by gas strengthens,and larger total temperature decrease is observed.In addition,concentrated stress has the same impact on the angle between outburst hole and coal seam.
Keywords：coal and gas outburstnon-uniform loadstress-concentrated areaload relief zone
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 836-842 )