PUMPABLE MINE VENTILATION STRUCTURE

摘要

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.

主权项

1. 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.