Pumpable mine ventilation structure
AssigneesHeintzmann Corporation, ABC Industries, Inc.
InventorsJoseph P. Bower, John J. Breedlove, Erik Denver, Steven S. Fleagle, Tyler Proffitt
Life of this patent
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Abstract
A pumpable mine ventilation stopping wall structure comprised of a pumpable bag having spaced walls of generally parallel nonporous and flexible sheets with the sheets retained in spaced relationship with spaced flexible cross ties. The perimeter of the spaced walls may be closed off with a permeable mesh having a mesh size which will permit restricted flow of cementitious grout therethrough for sealing the wall structure to surrounding rough mine faces. The bag is provided with at least one grout fill port for filling the bag by pumping cementitious grout into the bag.
Claims8
A pumpable mine ventilation stopping wall structure comprising:
- a pumpable bag having spaced walls of generally parallel nonporous and flexible sheets, said sheets retained in spaced relationship with spaced cross ties;
- the perimeter of said spaced walls closed off;
- said bag having at least one grout fill port penetrating one of said walls for pumping grout into said bag and an exhaust port.
A method of constructing a mine ventilation stopping wall structure, comprising;
- constructing a pumpable bag having spaced walls of generally parallel nonporous and flexible sheets retained in spaced relationship with cross ties and with the perimeter of said spaced walls closed off therebetween;
- and
- pumping a settable fluid cementitious grout into said bag through a fill port and thereby filling said bag and sealing the perimeter of said bag with surrounding mine surfaces while exhausting entrapped air in said bag through an exhaust port.
The method of claim 7, wherein the perimeter of said spaced walls is provided with said exhaust port by closing of between the perimeters of said sheets with a permeable mesh having a mesh size which will permit restricted flow of a cementitious grout therethrough;
- and
- sealing said wall at its perimeter to surrounding mine surfaces with cementitious grout flowing through said permeable mesh.
Dependencies are inferred from the claim text.