Yielding grout compactor for mine roof support fixture

Details Yielding grout compactor for mine roof support fixture Yielding grout compactor for mine roof support fixture

1993-03-01

1994-02-22

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

4052595, 4053022, E21D 2002

Patent

active

052881768

ABSTRACT:
A yieldable grout compactor for a cable roof support fixture adapted to be insertable in a uniform diameter borehole or in a stepped borehole in which the grout cartridge and compactor are insertable so as to have the cable perform the piercing and mixing function with respect to the grout material while the compactor is slidable on the cable caused by a sufficient degree of force to permit the grout to surround and anchor the cable. Compactor sleeves are sized with respect to the axial cable length and the internal and external diameters are sized to yieldably permit fixture installation and grout securement of the cable in a manner to obtain a secure anchor for the cable in the back of the borehole.

REFERENCES:
patent: 4265571 (1981-05-01), Scott
patent: 4378180 (1983-03-01), Scott
patent: 4477209 (1984-10-01), Hipkins, Jr. et al.
patent: 4518292 (1985-05-01), Calandra, Jr.

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