Abstract
The explosion phenomenon is an extremely complex physical-chemical process, which leads to the physical change of objects
and objectives encountered on the propagation path, as wells as the chemical modification of the underground atmosphere from
the area of influence. During the underground propagation of the explosion, the most affected objectives are the following:
ventilation constructions, regulation and insulation doors and the insulation dams. Dynamic pressure waves generated by the
explosion propagate both towards the workings for fresh air input and towards mine workings for exhausting return air.
At the end of the path for exhausting return air is located the main ventilation station, which may be affected by the explosion
type phenomenon. Due to this fact, the aeration capacity the mine may be endangered after the event. In this paper there is
presented the analysis of transitory phenomena upon main ventilation stations, due to dynamic effects generated by underground
explosions.