Blasting expanding element special for underground blasting engineering

Abstract

The invention discloses a blasting expanding element special for underground blasting engineering, and belongs to the field of blasting instruments and the blasting engineering. The blasting expandingelement comprises a fixing block. The fixing block comprises a sub-fin section and a barrel section. The fixing block is provided with a fixing block center hole, the fixing block center hole penetrates through the sub-fin section and the barrel section, the end, away from the barrel section, of the sub-fin section is closed, and 3-6 fin blocks are arranged on the portion, on the periphery of thefixing block center hole, of the sub-fin section. The blasting expanding element further comprises a blasting expanding powder column pipe shell, a blasting expanding powder column is pressed in theblasting expanding powder column pipe shell, and the blasting expanding powder column pipe shell is located at the position, at the bottom of the sub-fin section, of the center hole. The blasting expanding element further comprises a sealing plug, a sealing plug center hole is formed in the center of the sealing plug, and the sealing plug is arranged in the fixing block center hole and makes contact with the end face of the blasting expanding powder column. Automatic assembly can be achieved, the production efficiency is high, the cost is low, and meanwhile the problems that in the undergroundblasting engineering, as detonation waves compress adjacent detonators, blasting failure or a groove effect is caused, and explosive is under blasting failure are solved.

Description

technical field [0001] The invention relates to the fields of blasting equipment and blasting engineering, in particular to a special explosion expansion element for underground blasting engineering. Background technique [0002] With the increasing industrial concentration of China's civil explosives industry, the individualization of blasting equipment and the development of engineering blasting technology, various low-sensitivity explosives such as mixed explosives have become the dominant direction of blasting materials, and it is also the national public security's proposal for explosives. strict requirements. For this trend, it is not the best choice to expand the detonation energy of the detonator itself. The traditional method is to use a detonator, but the detonator has a complicated manufacturing process, high cost and uses toxic explosive materials such as TNT. [0003] In addition, in underground blasting, especially tunnel blasting, there are often detonation w...

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Problems solved by technology

[0004] At present, although individual units at home and abroad have developed a high-power detonator detonator, although it can detonate explosives without detonator sensitivity, it still cannot solve the problem of detonation rejection of underground blasting, especially tunnel blasting engineering detonators or explosives due to structural reasons, and the cost On the high side, the powder column can be taken out, which also brings pressure to public safety and product storage, and brings greater safety hazards to blind shot disposal

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