Temperature Distribution in Lane-way Air After Mine Methane Explosions
DUAN Yu-long
ZHOU Xin-quan
GONG Wu
JIA Yu-cheng
YANG Jian-lei
Abstract：Gas explosion dynamics and weak explosion theory were used to study the overpressure and temperature after an explosion as a function of distance from the fire source. The o verpressure values were compared to experimental results. The ignition of 100 m3 of methane in air (5% , 7. 5% or 9. 5% methane) results in a temperature change of 582.5 -309. 7, 709. 2 - 315.2 or 825.0 - 320.0 K. The changes were 688. 3-314. 3, 867. 4 - 321. 8 or 1 028. 4 - 328. 3 K after ignition of 200 m3 of methane-air mixture. After the explosion the temperature drops rapidly at first and then slowly decreases to the normal temperature of the lane-way air. The maximum temperatures are higher when the concentration and volume of the methane is higher. At the same time the difference in temperature becomes greater, too.
Keywords：minelanewaymethane explosionstemperaturedistribution
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)