Polymer grid for supplemental roof and rib support of combustibl

Details Polymer grid for supplemental roof and rib support of combustibl Polymer grid for supplemental roof and rib support of combustibl

1991-03-27

1992-03-17

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

4051501, E21D 1900

Patent

active

050963350

ABSTRACT:
A high-strength, lightweight flame-retardant and/or self-extinguishing polymer grid is provided for supplemental support of the roof and ribs of a combustible underground opening, such as within a coal mine, to prevent roof materials from falling and/or rib materials from spalling. The preferred polymer grid structure is formed of a polypropylene compounded with flame retardant additives.

REFERENCES:
patent: 4003208 (1977-01-01), Hornug et al.
patent: 4135958 (1979-01-01), Wood
patent: 4230371 (1980-10-01), Bell et al.
patent: 4237182 (1980-12-01), Fulmer et al.
patent: 4245926 (1981-01-01), Asszonyi et al.
patent: 4247221 (1981-01-01), Lewer et al.
patent: 4251168 (1981-02-01), Groetschel
patent: 4379660 (1983-04-01), Groetschel
patent: 4466758 (1984-08-01), Hinterreiter
patent: 4740111 (1988-04-01), Gagnon
patent: 4856939 (1989-08-01), Hilfiker

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