Method of and apparatus for installing solder bolts in rock bolt

Details Method of and apparatus for installing solder bolts in rock bolt Method of and apparatus for installing solder bolts in rock bolt

1982-09-28

1985-04-30

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405303, E21D 2002

Patent

active

045141118

ABSTRACT:
A method of installing solder bolts in rock bolting, according to which method a bolt (11) is fed into a hole (12) drilled in the rock and is anchored in the hole during hardening of a soldering material (13). The bolt is bent during feeding into the hole in order to produce in the bolt at least one such bend (11a) that the bolt, when entirely inserted in the hole, is wedged in between opposite walls of the hole. A bolt feeding apparatus for carrying out the method includes a feed beam (8), a feeding device (9) supported by said beam for feeding a rock bolt into a drill hole, a displacing device for displacing the feeding device along the feed beam, and a rock support (6) for supporting the feed beam on the rock. The apparatus is provided with guiding means which, as the feeding device is moved along the feed beam, displace the feeding device away from a bolt feeding position coaxial with the axis of the drill hole and return the feeding device back to said feeding position.

REFERENCES:
patent: 3222873 (1965-12-01), Williams
patent: 3301123 (1967-01-01), Worley
patent: 3942329 (1976-03-01), Babcock
patent: 4079592 (1978-03-01), Eakin
patent: 4085492 (1978-04-01), Stange
patent: 4201270 (1980-05-01), Ribich et al.
patent: 4226559 (1980-10-01), Prebensen

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