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

Pending Publication Date: 2020-02-07
UNIV OF SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the speed of the jet is generally above 7000m / s, the movement speed of the explosive product is about 3000m / s, and the velocity of the blast shock wave is similar to the speed of the jet, so the design of the above jet device causes the shock wave not to directly act on the target medium, only relying on the jet and Afterwards, the detonation gas will cause damage to the target medium, and the energy of the explosive is not fully utilized.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to Figure 4 , DNA double-helix tubular medicine-shaped cover with an inner diameter of 21.00mm and a height of 50mm, an inner diameter of the outer cover of 28mm and a height of 50mm, and the tube material is iron; the tube diameter is 5mm. The explosive is an emulsion explosive sensitized with 4% glass microspheres. After mixing evenly, fill the explosive into a cylindrical plastic bag and compact it. The density is guaranteed to be 1.1g / cm 3 to 1.3g / cm 3 , and then pack the packaged explosive into the cavity surrounded by the spiral tube. The experiment uses a non-priming detonator 3 to detonate, and the detonator 3 is placed in the center of the surface at one end of the shaped charge.

[0035] A steel pipe 4 penetration test was carried out on the shaped charge of this embodiment. The steel pipe 4 has a wall thickness of 5 mm, a diameter of 35 mm, a penetration depth of 2 to 3 mm, a penetration gap width of 4 to 5 mm, and a depression of 1 to 2 mm in the st...

Embodiment 2

[0037] refer to Figure 4 , DNA double-helix tubular medicine-shaped cover with an inner diameter of 30mm and a height of 50mm, an outer cover with an inner diameter of 42mm and a height of 50mm, and the tube material is aluminum; the tube diameter is 5mm. The explosive is an emulsion explosive sensitized with 4% glass microspheres. After mixing evenly, fill the explosive into a cylindrical plastic bag and compact it. The density is guaranteed to be 1.1g / cm 3 to 1.3g / cm 3 , and then pack the packaged explosive into the cavity surrounded by the spiral tube. The experiment uses a non-priming detonator 3 to detonate, and the detonator 3 is placed in the center of the surface at one end of the shaped charge.

[0038] A steel pipe 4 penetration test was carried out on the shaped charge of this embodiment. The outer diameter of the steel pipe 4 is 50 mm, the wall thickness of the steel pipe 4 is 4 mm, and the pipe length is 300 mm. After the test, the steel pipe parallel to the cha...

Embodiment 3

[0040] refer to Figure 5 , DNA double-helix tubular drug-shaped cover with an inner diameter of 35mm and a height of 30mm, an outer cover with an inner diameter of 42mm and a height of 30mm, and the tube material is plastic; the cross-sectional diameter of the tube is 5mm, and the explosive is an emulsion explosive sensitized by 4% glass microspheres. After mixing evenly, fill the explosives into a cylindrical plastic bag, compact and package, and the density is guaranteed to be 1.1g / cm 3 to 1.3g / cm 3 , and then pack the packaged explosive into the cavity surrounded by the spiral tube. The experiment uses a non-priming detonator 3 to detonate, and the detonator 3 is placed in the center of the surface at one end of the shaped charge.

[0041] The steel plate 5 penetration test was carried out on the shaped charge of this embodiment. The length, width, and thickness of the steel plate 5 were 300 mm, 100 mm, and 15 mm, the penetration depth was 1 to 2 mm, and the penetration ...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/20F42D3/04
CPCF42D1/20F42D3/04
Inventor 马宏昊万嘉辉赵凯吴建国徐俊峰史涛宁陈子俊刘凯陈宏劲姚象洋沈兆武
Owner UNIV OF SCI & TECH OF CHINA
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