Arrangement for erecting columnar supporting elements for underg

Details Arrangement for erecting columnar supporting elements for underg Arrangement for erecting columnar supporting elements for underg

1980-04-30

1982-06-01

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

248356, 405288, 249157, E21D 1518, E21D 1522

Patent

active

043325122

ABSTRACT:
An arrangement for erecting a columnar supporting element of a hardenable flowable material, for a roof of an underground excavation, has a hollow casing for filling with a hardenable flowable material and is composed of two telescopable casing portions each composed of two open-end semi-circular sections, an element for holding the upper casing portion in contact with the roof of an underground excavation and arranged adjacent to the casing, and elements for connecting the semi-circular sections of at least the lower prop casing portions with one another so as to be pivotable about a longitudinal pivot axis which is parallel to the longitudinal axis of the prop casing, and locking the same with one another.

REFERENCES:
patent: 1197483 (1916-09-01), Hauser
patent: 1201613 (1916-10-01), Novy
patent: 1300393 (1919-05-01), Hodges
patent: 1627754 (1927-05-01), Townsend
patent: 1875977 (1932-09-01), Beckwith
patent: 4185940 (1980-01-01), Spies
patent: 4249837 (1981-02-01), Spies

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