Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1995-08-28
1997-04-01
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405288, 405303, E02D 1532, E02D 700
Patent
active
056159790
ABSTRACT:
A mine support bag comprises an inner fabric tube of selected length and selected circumference having an inner surface and outer surface. A first fabric sheet is laminated to the outer surface on the one side of the tube, the first fabric sheet having a width which is wider than half of the tube circumference. The first fabric sheet has longitudinal edges which run generally parallel with the length of the tube and extend beyond opposite lateral edges of the tube. A second fabric sheet is laminated to the opposite side of the tube, the second fabric sheet having a width which is wider than half of the tube circumference, the second fabric sheet having longitudinal edges which run generally parallel with the length of the tube and extend beyond opposite lateral edges of the tube. The respective lateral edges of the first and second sheets overlie each other and are laminated together. The opposite ends of the tube are sealed to thereby form a sealed bag the sealed bag has a valve therein through which a pressurising fluid can be introduced into the interior of said bag. The invention extends to a method of forming a mine support bag.
REFERENCES:
patent: 2990166 (1961-06-01), Walsh
patent: 3508408 (1970-04-01), LeJeune
patent: 3528876 (1970-09-01), Von Clave-Bouhaben et al.
patent: 3752723 (1973-08-01), Bruneau
patent: 4058425 (1977-11-01), Thrun
patent: 4073021 (1978-02-01), Carlisle
patent: 4092750 (1978-06-01), Ellis
patent: 5405471 (1995-04-01), LeMaster
Dreger Walter H.
Heckadon David R.
Taylor Dennis L.
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