Method for remote positioning of explosive charges in mining voi

Details Method for remote positioning of explosive charges in mining voi Method for remote positioning of explosive charges in mining voi

1980-10-06

1984-03-27

Nelson, Peter A.

Ammunition and explosives

Blasting

Borehole loading

102312, 1022757, 102320, 10227512, 299 13, 166 50, F42B 300

Patent

active

044386990

ABSTRACT:
Method and apparatus for remotely positioning individual explosive charges at preselected locations in substantially horizontal voids created by mining hard material such as coal are disclosed. The method includes the steps of positioning at least one charge proximate the entry of a void. The charge is then armed as by connecting a detonator cord thereto and inserted into a void to a preselected depth from a remote location. An apparatus is provided for positioning the charges at preselected locations in the voids and includes insert means having a body member for releasably engaging the charges during the positioning operation. The insert means is driven until the body member and charge propelled thereby is moved to a preselected location within the void where the charge is deposited.

REFERENCES:
patent: 2893285 (1959-07-01), Payne
patent: 3104584 (1963-09-01), Jacobs
patent: 3648612 (1972-03-01), Grayson
patent: 3949673 (1976-04-01), Lyerly
patent: 4002119 (1977-01-01), Halley, Jr.
patent: 4282812 (1981-08-01), Forgey et al.

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