Low level blasting composition

Details Low level blasting composition Low level blasting composition

1990-05-16

1991-12-10

Lechert, Jr., Stephen J.

Explosive and thermic compositions or charges

Structure or arrangement of component or product

Particles of diverse size or shape

149 2, 149 38, 149 40, 149 41, 149 42, 149 43, 149 44, 149 88, 149 89, 149 92, 102313, 102320, 102322, 102332, C06B 4502

Patent

active

050714961

ABSTRACT:
A blasting agent is disclosed for use in a borehole having a pressure resistant closure. The blasting agent is used in combination with a primary initiating system comprised of a detonator and an initiator for the detonator. The blasting agent is preferably a semi-fluid explosive material having a predetermined sensitivity. The sensitivity is related to the borehole diameter and the initiating system's strength, wherein the blasting agent upon initiation is transformed into explosive products by means of reaction front which consumes substantially all the blasting agent as the reaction front passes through the blasting agent. The reaction front has an average velocity of propagation of between 200 meters/second and 1,000 meters/second for at least 30% of the total length of blasting agent located in the borehole. Another aspect of the invention is a method of blasting wherein the average velocity of propagation of the explosive front in the blasting agent is in a range of between 200 m/sec and 1,000 m/sec.

REFERENCES:
patent: 4012246 (1977-03-01), Forrest
patent: 4132574 (1979-01-01), Forrest
patent: 4490196 (1984-12-01), Funk
patent: 4555279 (1985-11-01), Funk

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