圧力損失算定区間内を火災が通過する場合の圧力損失の計算値と実測値の比較

坑内火災時の通気圧力損失に関する基礎的研究 (第2報)

抄録

Mine fires not only bring serious losses on the mines as the result of burning off facilities, machineries and materials, but also inflict a bodily injury upon persons working underground or under certain circumstances, cause heavy casualties suffering from heat, smoke and toxic gases generated.
In underground mines, they usually adopt forced ventilation to keep safety and healthy working environment. If a mine fire takes place somewhere underground, however, the pressure distribution in the ventilation network of the mine is disturbed, and in the worst case the direction of ventilation is reversed.
It is therefore definitely important to estimate the ventilation pressure change during a mine fire.
In the first report, under some assumptions to simplify the mine fire phenomena, the authors derived the equations to calculate total pressure drop in a mine roadway. And then compared values calculated with measured using the model duct wherein combustion products flew.
In this 2nd report, the authors examined pressure drop variation when fires passing through the pressure drop measuring/estimating section, and revealed that there was reasonable agreement between calculated and observed pressure drop variation.