Dmytro Dubinin, Oleksandr Pirohov, Yuliia Bezuhla


About 40 thousand fires occur in Ukraine in natural ecosystems every year. Fires cause enormous damage to the environment, the population, and also the country's entire economy. Prevention and suppression of fires is one of the most relevant and most important tasks in Ukraine. To combat fires in natural ecosystems, such methods of fighting fires as the creation of reference fire-fighting lines are widely used. The results of an experiment on the creation of fire-fighting lines using an explosion of a single and double shell with a combustible mixture were carried out. To fill the shell, a stoichiometric mixture of acetylene with atmospheric pressure air was used. The shell was a plastic film 150 μm thick. During the experiment, the influence of the size (radius) of the shell and the number of lines on the width of the created reference fire-fighting lines, the distribution of the mass of vegetation along the shell with a combustible mixture before and after the explosion was studied.

The obtained results of the experiment showed that the vegetation removal degree along the charge axis to the vegetation cover after the explosion is 0.05. The dependences of the vegetation removal degree on the reduced energy per one meter of the line with a combustible mixture are obtained. It is calculated that in the experiment, the energy per linear meter of the line with the combustible mixture was 3.04 MJ/m, 6.6 MJ/m and 10.9 MJ/m for the line with a radius of 0.5 m, 0.65 m and 0.9 m, respectively.

The distribution of the vegetation removal degree was experimentally established, and based on the processing of the results obtained, dependencies were determined that made it possible to calculate the width of the reference fire-fighting line.


reference fire-fighting line; shell with a combustible mixture; vegetation removal degree; vegetation cover

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DOI: http://dx.doi.org/10.21303/2585-6847.2019.001033


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