Fire behaviour of multiple fires in a mine drift with longitudinal ventilation

摘要

The fire behaviour involving multiple fires in a mine drift with longitudinal ventilation was analysed.The conditions and fire phenomena occurring were described.The analysis was based upon experimental data from model-scale fire experiments.A fire involving several fuel items may lead to flames tilted horizontally and filling up the entire cross section,leading to earlier ignition,higher fire growth rates,higher fire spread rate and severe fire behaviour.Longer flame lengths will also result due to decreased air entrainment.A correlation for the continuous flame length was proposed.The results of the analysis will help identifying and preventing potentially dangerous fire situations with several large combustible items distributed along a mine drift.