Hydraulic and earth engineering – Temperature modification or control of earthen formation
Patent
1993-03-15
1995-01-10
Taylor, Dennis L.
Hydraulic and earth engineering
Temperature modification or control of earthen formation
299 11, 299 16, 405 55, 405138, E02D 1914
Patent
active
053801270
ABSTRACT:
A method of excavating an underground area liable to flooding or collapsing during excavation, wherein the area is susceptible to disaggregation by high pressure water jet and is located above rock of strength suitable for drifting a gallery comprises drifting a gallery in the rock beneath the area, freezing at least a perimeter of the area to form a frozen perimeter, and excavating material from within the frozen perimeter using a high pressure water jet and one or more boreholes between the gallery and the area. Preferably the whole area is frozen for excavation.
REFERENCES:
patent: 711012 (1902-10-01), Sooysmith
patent: 713165 (1902-11-01), Sooysmith
patent: 721830 (1903-03-01), Perin
patent: 736308 (1903-08-01), Sooysmith
patent: 3299643 (1967-01-01), Mauclet
patent: 3528252 (1970-09-01), Gail
patent: 4516878 (1985-05-01), Rebhan
Brochure entitled "Terrafreeze", undated 11 pages, published by the Terrafreeze Corporation.
Document entitled "Some Notes On Concreting Against Frozen Earth", Shuster, J. A., Braun, B., undated, 8 pages, published by the Terrafreeze Corporation.
Caleix Clovis
Narcy Jean-Luc
Cigar Lake Mining Corporation
Cogema
Taylor Dennis L.
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