Filling cavities in mining

Details Filling cavities in mining Filling cavities in mining

1987-08-06

1988-11-22

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Chemical

299 11, 405267, E02D 312, E21F 1500

Patent

active

047862114

ABSTRACT:
Cavities in mining are filled by introducing a mixture consisting of a slurry or sludge which evolves CO.sub.2, foams and solidifies and predominantly comprises alpha-hemihydrate, alpha-CaSO.sub.4. 0.5 H.sub.2 O, an alkali metal or alkaline earth metal carbonate and water, by a method in which the mixture is mixed with a bisulfate-containing aqueous solution or suspension of one or more metals before being introduced into the cavities to be filled.

REFERENCES:
patent: 2801983 (1957-08-01), Dixon et al.
patent: 2995457 (1961-08-01), Lyons et al.
patent: 3503215 (1970-03-01), Graf et al.
patent: 4136998 (1979-01-01), Bassier et al.

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