The results of experiments on the localization and complete cessation of flame combustion and thermal decomposition of typical forest combustible materials (on the example of pine needles and birch leaves) are presented. Before the combustion front, a specialized barrier strip was used in the form of a moistened layer of material with control of its size and retained volume of water. Necessary and sufficient conditions for the complete cessation of flame propagation and the pyrolysis front are determined. The relationships between the main parameters are established: the volume of water, the density and intensity of irrigation, the size of the water barrier, the volume of dry forest combustible material. When summarizing the experimental results, the values of the rational density and intensity of irrigation of forest combustible material in front of the combustion front are highlighted. The main differences in the selection of the effective values of these parameters are shown in the case of localization and cessation of flame burning and thermal decomposition of needles and leaves.
Thermal conditions for stopping pyrolysis of forest combustible material and applications to firefighting
