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Industrial explosive energy focusing linear type cutter

A linear cutter and industrial explosive technology, applied in the field of blasting equipment, can solve problems such as poor safety, large critical detonation diameter, unsuitable rock surface protection, etc., and achieve the effect of increasing cutting capacity and low price

Inactive Publication Date: 2004-12-22
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But one is because high-energy explosives are expensive and less safe, and the high detonation pressure is not suitable for the protection of the rock surface left behind; Larger diameter and prone to pipe effects; thus limiting the application of this type of patented method in blasting engineering

Method used

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  • Industrial explosive energy focusing linear type cutter
  • Industrial explosive energy focusing linear type cutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Use 2# rock explosive as the main explosive 1 (the detonation velocity is generally 3500m·s -1 ), press the attached figure 1 The form is made into a linear shaped energy cutter, and the high-explosive velocity charge 3 adopts a detonation velocity of 6500m·s -1 3 x 10mm sticks of explosives. The cutter energy-gathering cover 2 is a 0.8mm iron sheet right-angle cover, the length of the cover side is 20mm, and the length of the bottom side is 28.3mm. The distance between two high-explosive charge strips 3 is 15mm (0.53 times of the length of the bottom edge of the cover), and the minimum connecting line between the two primary explosive strips 3 is 20mm (0.7 times of the length of the bottom edge of the cover) apart from the bottom distance of the cover. The charge of cutter is 600g·m -1 . Carry out the cutting steel target experiment, the cutting depth is between 18-22mm, which is equivalent to the cutting depth of the high-energy explosive cutter with the same char...

Embodiment 2

[0029] Use ammonium oil explosives as the main explosive 1 (the detonation velocity is generally 3300m·s -1 ), press the attached figure 2 The form is made into a double-sided linear shaped energy-concentrating cutter, and the high-explosive velocity drug bar 3 adopts a detonation velocity of 6900m·s -1 detonating cord. The cutter energy-gathering cover 2 is a 1mm iron sheet right-angle cover with a cover edge length of 20mm and a bottom edge length of 28.3mm. The distance between two high-explosive charge strips 3 is 16mm (0.56 times of the length of the bottom edge of the cover), and the minimum connection between the two primary explosive strips 3 is 26mm (0.91 times of the length of the bottom edge of the cover). The charge of cutter is 1240g·m -1 . Place a 300mm-long double-sided cutter every 400mm, connect it with a detonating cord in the middle, and place it in a Φ100mm drill hole. The jet flow direction of the cutter points to the direction of the connection betwe...

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Abstract

Low-cost low explosive is used in the invention as main explosive. Two bars of high explosive are used to drive detonation of main explosive. Using dual energy collection effect of detonation wave collected and shaped charge generates strong concourse gas or metal jet flow. Advantages are: enhancing cutting power of low industrial explosive, and possible to reach cutting power of high explosive; main explosive in low cost and safe in use for double face cutter in presplitting, smooth blasting and cutting rock. Detonation direction of main explosive is back to protected face of rock so as to protect face of rock to be reserved.

Description

technical field [0001] The invention belongs to the technical field of blasting equipment, and in particular relates to an energy-gathering linear cutter for industrial explosives which improves the energy-gathering effect. Background technique [0002] The linear shaped energy cutter is a kind of blasting equipment that uses the explosive cavity energy-gathering effect (also known as the Rohmen effect) to generate a gas or metal jet. The jet generated by the linear shaped energy cutter is used to cut the target to be destroyed. Linear concentrated energy cutters are often used in anti-tank mines, demolition of steel structures, etc. As we all know, in order to ensure the cutting ability of shaped energy cutters, they are generally made of high-energy explosives. However, the price of general high-energy explosives is much more expensive than industrial explosives, usually 2 to 9 times higher; moreover, most of the commonly used high-energy explosives have higher sensitivit...

Claims

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Application Information

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IPC IPC(8): F42D3/04
Inventor 李晓杰阎鸿浩赵雷曹香光段宝贵马玉罄刘宝宏邢占胜
Owner DALIAN UNIV OF TECH
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