DNA double-spiral ejection and explosion integrated medium-length hole blasting device

A deep-hole blasting and double-helix technology, which is applied in blasting and other directions, can solve the problems of underutilized explosive energy and target medium damage, and achieve the effect of enhanced rock breaking effect, easy size, and portability
CN110763093APending Publication Date: 2020-02-07UNIV OF SCI & TECH OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Publication Date
2020-02-07

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Abstract

The invention discloses a DNA double-spiral ejection and explosion integrated medium-length hole blasting device. The device comprises a DNA double-spiral tubular explosive cover, explosives and an igniter. The explosive cover is formed by spiral staggered winding of two hollow round pipes according to a certain pitches; the explosives are general explosives positioned in a spiral cavity; and theigniter is a general priming device. The device changes explosive loading and acting modes of traditional explosives; each single-chain spiral pipe forms spiral jet flows sprayed to the periphery after priming of the explosives to invade rock masses; the jet flows are overlapped in staggered areas of two round pipe space to strengthen a local invasion effect; and meanwhile, impact waves and explosion gas are generated in positions without the spiral pipes for directly acting on rocks. The device integrates ejection and explosion to obtain excellent blasting sections during reduction of the uselevel of the explosives. The introduced DNA double-spiral explosive cover is simple in form, various in shape, easy to machine and convenient to use, improves the efficiency, and reduces the cost.
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Description

technical field

[0001] The invention belongs to the technical field of engineering blasting, and in particular relates to a DNA double-helix type blasting integrated medium-deep hole blasting device. Background technique

[0002] Blasting technology has the characteristics of high efficiency and low cost, so many current projects still use blasting operations. Our country has a vast territory, and infrastructure projects are spread all over the country. In particular, tunnel construction, mining, reef blasting and sea reclamation all require the use of blasting technology. Moreover, when building subways in many cities, when they encounter foundations with high hardness, they also need to use blasting technology for excavation.

[0003] Although blasting technology is widely used and developed rapidly, there are still some deficiencies in blasting technology at present, such as the large block rate of rocks, low utilization rate of explosive energy, and low utilization rate...

Claims

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