Low level blasting composition
First Claim
1. A blasting agent for use in a bore hole having a pressure resistant closure and for use in combination with a primary initiating system comprising a detonator and a means for initiating said detonator, said blasting agent comprising:
- a semifluid explosive material having a predetermined sensitivity, having regard to said bore hole diameter and said initiating system'"'"'s strength; and
wherein said blasting agent upon initiation is transformed into explosive products by means of a reaction front which consumes substantially all of said blasting agent as said reaction front passes through said blasting agent, wherein said reaction front has an average velocity of propagation of between 200 m/sec and 1000 m/sec for at least 30% of the total length of blasting agent located in said bore hole.
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Accused Products
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.
26 Citations
35 Claims
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1. A blasting agent for use in a bore hole having a pressure resistant closure and for use in combination with a primary initiating system comprising a detonator and a means for initiating said detonator, said blasting agent comprising:
- a semifluid explosive material having a predetermined sensitivity, having regard to said bore hole diameter and said initiating system'"'"'s strength; and
wherein said blasting agent upon initiation is transformed into explosive products by means of a reaction front which consumes substantially all of said blasting agent as said reaction front passes through said blasting agent, wherein said reaction front has an average velocity of propagation of between 200 m/sec and 1000 m/sec for at least 30% of the total length of blasting agent located in said bore hole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- a semifluid explosive material having a predetermined sensitivity, having regard to said bore hole diameter and said initiating system'"'"'s strength; and
Specification