Mine ventilation structure
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United States of America Patent
Stats
-
Mar 9, 1999
Grant Date -
N/A
app pub date -
Nov 21, 1997
filing date -
Nov 21, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A mine ventilation structure used to block a passageway or to prevent mixture of ventilation air at the intersection of two passageways. The passageway has sidewalls and a ceiling. The ventilation structure is formed of panels, each of the panels having spaced apart wire grids with an insulation core. The grids are interconnected with strut wires passing through the insulation core and forming a truss system. A layer of concrete is applied as gunite or shotcrete to the panels embedding the strut wires and covering the wire grids. The layer of concrete extends beyond the margins of the ventilation structure onto the sidewalls and ceiling of the passageway forming a monolithic structure sealed in the passageway that is virtually impervious to air.
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Family
International Classification(s)
Cited Art Landscape
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