Supporting of excavation roofs

Details Supporting of excavation roofs Supporting of excavation roofs

1979-08-27

1981-03-10

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

52724, 52741, 248356, 264 33, 425 63, 405230, E21D 2304

Patent

active

042550718

ABSTRACT:
Roofs of underground excavations are supported by forming sheet-material elements into tubes whose diameter can be varied by changing the overlap between the longitudinal edges of the rolled-up sheet material, standing the tubes upright to bear against the roof and the floor of the excavation, and filling them with hardenable material in flowable condition which, after hardening, will form a roof-supporting column.

REFERENCES:
patent: 1229364 (1917-06-01), White
patent: 1615815 (1927-01-01), Birdsey
patent: 2451777 (1948-10-01), Salas
patent: 3108403 (1963-10-01), Jackson
patent: 3562056 (1971-02-01), Olson
patent: 3564804 (1971-02-01), Archer et al.
patent: 3594973 (1971-02-01), Archer et al.
patent: 3728864 (1973-04-01), Wiswell
patent: 3798867 (1974-03-01), Starling
patent: 4092832 (1978-06-01), Mattson
patent: 4185940 (1980-01-01), Spies

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