Rock anchors

Details Rock anchors Rock anchors

1980-01-31

1983-01-18

Murtagh, John E.

Hydraulic and earth engineering

Earth treatment or control

Chemical

E21D 2100

Patent

active

043690033

ABSTRACT:
A rock anchor assembly comprising a tensioning element adapted to be inserted into a bore hole and to be clamped therein, the outer end of which projecting from said bore hole being adapted to be tensioned against a rock wall by means of an anchor plate, the inner end of said tensioning element inserted into the bore hole being provided with a spreading jacket clinging into said bore hole and being adapted for tensioning with the inner end of the tensioning element by means of a spreading wedge upon turning a clamp nut, and wherein said clamp nut is screwed on a threaded tensioning jacket being adapted for tensioning with the outer end of said tensioning element with the aid of tensioning wedge means upon turning the clamp nut. A method of installing said rock anchor in a wall is also provided.

REFERENCES:
patent: 2180866 (1929-11-01), Cryer
patent: 2442113 (1948-05-01), Beijl
patent: 2525198 (1950-10-01), Beijl
patent: 2667037 (1954-01-01), Thomas
patent: 2682152 (1954-06-01), Bierer
patent: 2879686 (1959-03-01), Lewis
patent: 2934935 (1960-05-01), Zerna
patent: 3226934 (1966-01-01), Emery
patent: 3306051 (1967-02-01), Howlett
patent: 3311012 (1967-03-01), Williams
patent: 3837258 (1974-09-01), Williams
patent: 4034567 (1977-07-01), Roggen
patent: 4139323 (1979-02-01), Brandstetter

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