Method and device for rock bolting

Details Method and device for rock bolting Method and device for rock bolting

2008-01-15

2008-01-15

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

C405S259300

Reexamination Certificate

active

07318689

ABSTRACT:
Method and device for rock bolting, wherein a tubular bolt (2) with closed cross-section is inserted and expanded for anchoring inside a bore hole (12), wherein the tubular bolt is expanded to contact in the inner portion of the bore hole, a tension element (3, 7, 8, 9) which is arranged in the outer portion of the bore hole with an inner part (7) attached to the tubular bolt (2) is pre-stressed and a settable medium is injected into the outer portion of the bore hole (14) between (27) the tension element and the wall of the bore hole and is allowed to set.

REFERENCES:
patent: 3311012 (1967-03-01), Williams
patent: 3326004 (1967-06-01), Williams
patent: 3379019 (1968-04-01), Williams
patent: 3693359 (1972-09-01), Karara
patent: 3695045 (1972-10-01), Williams
patent: 4459067 (1984-07-01), Skogberg et al.
patent: 4634317 (1987-01-01), Skogberg et al.
patent: 4664561 (1987-05-01), Frease
patent: 5997219 (1999-12-01), Krzysztalowicz et al.

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