Dynamic earth anchor, and a sleeve therefor

Details Dynamic earth anchor, and a sleeve therefor Dynamic earth anchor, and a sleeve therefor

1989-08-02

1990-08-28

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

411 60, 411479, E21D 2100

Patent

active

049520962

ABSTRACT:
A dynamic earth anchor, which is forced from a tubular body, comprises a combination of a roof bolt and a tubular, deformable sleeve. The sleeve is insertable into a terrestrial borehole, at a closed end thereof, and then the bolt is inserted into the sleeve. This establishes an almost immediate restraint of the terrestrial formation in which the borehole is formed; the sleeve lockingly secures the bolt, and the bolt causes the sleeve to impress radial forces to the wall of the borehole. The sleeve of the anchor is defined by two edge portions to facilitate its insertion into the borehole, and to permit its slight opening to facilitate bolt entry thereinto the body has an interior and an exterior surface. The slit extends between the interior and exterior surfaces, tangentially intersecting with the interior surface. When the anchor is inserted, it is monitored in a substantially uniform cross sectional width regardless of minor diameter variations of the borehole, which cause sliding of the edge portions. The uniform with results in a substantially even force distribution between the bolt and the interior surface about the entire sleeve.

REFERENCES:
patent: 1687207 (1928-10-01), Hawker
patent: 2648247 (1953-08-01), Schmuziger
patent: 2709389 (1955-05-01), Van Der Kleij
patent: 4012913 (1977-03-01), Scott
patent: 4501515 (1985-02-01), Scott

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