Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid
Patent
1999-03-01
2000-09-26
Bagnell, David
Mining or in situ disintegration of hard material
Processes
Breaking down by direct contact with fluid
1661775, 166308, E21C 3706
Patent
active
061233943
ABSTRACT:
A method of mining that makes use of hydraulic fracturing. The method comprises fracturing an ore body hydraulically by introducing fluid rapidly into a bore or fissure in the ore body such that pressure in the bore or fissure builds up rapidly and it fractures the surrounding ore body. This enables the surrounding ore body to cave into a suitable space such as an undercut from which the ore can then be recovered. The method is particularly useful in block caving as a replacement for explosives.
REFERENCES:
patent: 4265570 (1981-05-01), Choi et al.
patent: 4474409 (1984-10-01), Trevits et al.
patent: 5472049 (1995-12-01), Chaffee et al.
D.E. Julin, et al.; "Block Caving"; Underground Mining Systems and Equipment; SME Mining Engineering Handbook; pp. 162-220, undated.
J.W. Summers, et al.; "A Study to Determine the Feasibility of High Pressure Water Infusion for Weakining the Roof"; Proc. 2nd AAC Mining Symposium; 1985; pp. 197-205.
Bagnell David
Commonwealth Scientific and Industrial Research Organisation
Singh Sunil
LandOfFree
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