Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1980-06-13
1983-08-23
Corbin, David H.
Hydraulic and earth engineering
Earth treatment or control
Chemical
405259, 411 60, E21D 2002
Patent
active
044001134
ABSTRACT:
The friction rock stabilizer comprises an elongate element for insertion into an earth structure bore, for stabilizing the earth structure, which has a sheath rendering the stabilizer impervious to chemical attack and, hence, corrosion-resistant. The bore surface isolating method, in an embodiment thereof, comprises interposing a protective or isolating sleeve or lining between the stabilizer and the earth structure bore. The protective or isolating lining provides two benefits: it facilitates movement of the stabilizer into frictional engagement with the bore, by isolating the stabilizer from the rough surface of the bore wall, and also provides a corrosion-resistant sheath to protect the stabilizer, in the bore, from alkaline or acidic mine water, corrosive minerals, and the like.
REFERENCES:
patent: 3641772 (1972-02-01), Dietrich
patent: 4012913 (1977-03-01), Scott
patent: 4022101 (1977-05-01), Helgesson
patent: 4051681 (1977-10-01), Yaros
patent: 4112637 (1978-09-01), Herbst
patent: 4124983 (1978-11-01), Weatherby
patent: 4188158 (1980-02-01), Donan et al.
Chaiko Walter M.
Larson John A.
Corbin David H.
Ingersol-Rand Company
Murphy B. J.
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