Determination of the value of air reserve coefficients in coal mines

Abstract

Annotation. The flow rate of mine main ventilation fans is spent on ventilation of all cleaning and preparation faces ∑Qz; on short currents arising between the fan channel and the outside atmosphere - external leakages; on countless short currents arising in underground workings through leakages in ventilation structures, coal pillars and mined-out space - internal leakages, as well as on ventilation of machine and other chambers that need separate ventilation.