Mine stopping having a swinging door

Details Mine stopping having a swinging door Mine stopping having a swinging door

1998-11-09

2000-12-26

Lillis, Eileen D.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Lining

405151, 49501, 454169, E21D 1100, E21F 114

Patent

active

06164871&

ABSTRACT:
A mine stopping comprising a wall extending across a passageway in a mine to close the passageway. The wall has an opening therein. A door is hinged adjacent the opening for swinging between a closed position in which the door closes the opening to inhibit the passage of air therethrough, a first open position in which the door is moved in one direction away from the closed position, and a second open position in which the door is swung in an opposite direction away from the closed position. The door is movable to either of the first and second open positions when the door is subjected to substantial concussive air pressure thereby to permit concussive air to pass through the opening in both directions.

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PCT International Application, publication date Sep. 24, 1998 WO 98/41733.

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