Explosion expansion element specially used for underground blasting engineering

Abstract

The invention discloses a special explosion expansion element for underground blasting engineering, which belongs to the field of blasting equipment and blasting engineering, and includes a fixed block, the fixed block is divided into two parts: a wing section and a barrel section, and the fixed block is provided with a central hole of the fixed block , the central hole of the fixed block runs through the wing section and the barrel section, and the end of the wing section away from the barrel section is closed, and three to six fin blocks are arranged on the outer periphery of the center hole of the fixed block of the wing section; Explosive column casing, the expansion explosive column casing is press-fitted with an expansion explosive column, and the expansion explosive column casing is located at the bottom of the winged section of the central hole; it also includes a sealing plug, the sealing The center of the plug is provided with a central hole of the sealing plug, and the sealing plug is put into the central hole of the fixed block and contacts with the end face of the expansion charge column; the invention can realize automatic assembly, high production efficiency and low cost, and at the same time solves the problem of underground blasting engineering. Problems such as detonation wave compression of adjacent detonators leading to rejection or trench effect causing explosive rejection and other issues.

Description

technical field [0001] The invention relates to the field of blasting equipment and blasting engineering, in particular to a special blasting element for underground blasting engineering. Background technique [0002] With the increase of industrial concentration in China's civil blasting industry, the personalization 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, expanding the detonation energy of the detonator itself is not the best choice. The traditional method is to use a detonator, but the production process of the detonator is complicated, the cost is high, and toxic explosive materials such as TNT are used. [0003] In addition, in underground blasting, especially tunnel blasting, there is often the extrusion of t...

AI Technical Summary

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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