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Fundamental and applied issues of mining

2021 year, number 1

VENTILATION OF BOTTOMHOLE AREA OF AN EXTENDED BLIND DRIFT DUE TO THE EJECTION EFFECT ARISING WHEN A LONGITUDINAL PARTITION IS INSTALLED

S. A. Pavlov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Ventilation, mine ventilation, longitudinal partition, computational modeling, blind drift, air flow rate, aerodynamic resistance

Abstract

The results of studying aerodynamic processes taking place in extended blind drifts are presented. The change in local aerodynamic resistance of area under study is shown at the supply and suction modes of mine ventilation. Based on the results of computational modeling, it is shown that sepa-rately installed longitudinal partitions allow ventilating blind drifts (up to 100 m) without using lo-cal mechanical ventilation due to the resulting ejection effect.