Process for producing an underground zone of fragmented and pervious material
US4175490A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1977 |
| Grant date | Nov 27, 1979 |
| Priority date | — |
| Expiry date | Nov 3, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D1/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The subterranean fragmented and pervious zone is formed beneath an overburden which, as a first step of the process, 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 substantially 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 fragmenting of the rock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.