Title:
UNDERGROUND MINING METHOD
Document Type and Number:
WIPO Patent Application WO2001088337
Kind Code:
A3
Abstract:
A method of mining an underground ore body, includes the steps of excavating at least one first tunnel in the ore body by means of an auger mining machine, and excavating at least one second tunnel in the ore body, the, or each, second tunnel coinciding in at least one point with at least one associated first tunnel. The invention extends to a method of backfill mining of an underground ore body, the method including the steps of excavating at least one first region of the ore body to retain at least one second region defined in the ore body, the, or each, second region providing a first support for a roof of the mine; backfilling at least one of the excavated first regions to provide a second support for the roof of the mine; and excavating at least a portion of the, or at least one of, the second regions of the ore body.
Inventors:
FOURIE DIRK BERNHARD (ZA)
VAN EEDEN CHRISTIAAN HIERONYMA (ZA)
JORDAAN JACOBUS HOSEA (ZA)
VAN EEDEN CHRISTIAAN HIERONYMA (ZA)
JORDAAN JACOBUS HOSEA (ZA)
Application Number:
PCT/IB2001/000863
Publication Date:
June 13, 2002
Filing Date:
May 17, 2001
Export Citation:
Assignee:
ESKOM (ZA)
FOURIE DIRK BERNHARD (ZA)
EEDEN CHRISTIAAN HIERONYMANS B (ZA)
JORDAAN JACOBUS HOSEA (ZA)
FOURIE DIRK BERNHARD (ZA)
EEDEN CHRISTIAAN HIERONYMANS B (ZA)
JORDAAN JACOBUS HOSEA (ZA)
International Classes:
E21C41/16; E21C41/22; (IPC1-7): E21C41/16; E21F1/00
Foreign References:
| GB2229747A | 1990-10-03 | |||
| US2859682A | 1958-11-11 | |||
| US4512610A | 1985-04-23 | |||
| US3402968A | 1968-09-24 | |||
| US4309059A | 1982-01-05 | |||
| US5879057A | 1999-03-09 | |||
| US5782539A | 1998-07-21 | |||
| US5265941A | 1993-11-30 |
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