natural ventilation pressure

natural ventilation pressure

[′nach·rəl ‚vent·əl′ā·shən ‚presh·ər]
(mining engineering)
A pressure difference across the shaft-bottom doors caused by a lack of balance in the two vertical air columns.
References in periodicals archive ?
2006) investigated the pressure of natural ventilation in the shaft of a road tunnel with results indicating that the natural ventilation pressure induced by the shaft has a significant impact on the efficiency of the ventilation system.
The evaluation of natural ventilation pressure in Korean long road tunnels with vertical shafts, Tunnelling and Underground Space Technology 21(3-1): 472.