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  5. The system air currents in undergrounds, the role of it in warning and liquidation of consequences of catastrophes

The system air currents in undergrounds, the role of it in warning and liquidation of consequences of catastrophes

S.А. Gryaznova
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In this article the analysis of malfunctions of the systems of tunnel ventilation, applied in underground passages, that showed that they did not provide steady motion of gas-air streams at a fire in a rolling stock and his stopping at a tunnel, and also the methodical providing of calculations of stability of gas-air streams is absent at fires in tunnels.
Keywords: resistance of air environment, dangerous factors of fire, malfunctions, system of tunnel ventilation