Process for producing an underground zone of fragmented and...

F - Mech Eng,Light,Heat,Weapons – 42 – D

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F42D 3/04 (2006.01) C10G 1/00 (2006.01) F42D 1/00 (2006.01)

Patent

CA 1088860

ABSTRACT OF THE DISCLOSURE The subterranean fragmented and pervious zone is formed beneath an overburden which, as a first step of the pro- cess, is lifted as a substantially monolithic land mass to produce a void space and a free space proximate the rock to be fragmented, the raised overburden thus providing a sub- stantially impervious lid or closure for the fragmented zone as formed by the present invention. Explosive charges are then placed proximate to and for blasting against the free face formed on raising the overburden. The charges are exploded to fragment the rock to distribute the space, thus producing fractured, pervious rubble-ized rock in a defined and enclosed zone. Different techniques are disclosed for the critical raising of the overburden and subsequent frag- menting of the rock.

314799

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