Compound energy-concentrating blasting cartridge and production method thereof

Abstract

The invention discloses a compound energy-concentrating blasting cartridge and a production method thereof. The blasting agent is arranged in a double-layer tube, the double-layer tube is respectively provided with an inner tube kerf and an outer tube kerf, and couplant water is added in the clearance between the two tubes. Thus, the blasting cartridge firstly produces high pressure gas jets at the moment of blasting, water jets are formed through the energy concentration at the kerf of the inner tube, and the energy of the water jets are strengthened through the energy concentration at the kerf of the outer tube to form high pressure water jets, thereby impacting the wall of the blast hole and achieving the goal of oriented cracking. Thus, from the perspective of energy concentration, the compound energy-concentrating blasting cartridge can form the effect of energy concentration twice, which is twice as the energy concentrated by a normal cut blasting cartridge; and from the perspective of enclosing rock protection, the compound energy-concentrating blasting cartridge adopts a double-layer tube which is twice as the common cut blasting cartridge, and the enclosing rock protection effect is better than that of the common cut blasting cartridge, thereby further reducing the supporting cost.

Description

technical field [0001] The invention relates to a composite energy-gathering blasting charge and a production method thereof, belonging to the field of energy-gathering blasting. Background technique [0002] Since Sweden adopted smooth blasting in the early 1950s, many countries have also conducted a large number of experimental studies on smooth blasting. At present, smooth blasting has also been fully promoted in shaft excavation construction in our country, and has become a standard construction method. [0003] In recent decades, my country has conducted a lot of research on the mechanism of photoexplosion, charge structure of photoexplosion, detonation time difference, guiding effect, photoexplosion parameters, etc., and has developed special explosives for photoexplosion with low density, low detonation velocity, low power and low density. , ammonium-ladder explosive small-diameter rolls, and water-gel explosive small-diameter rolls were tested on-site. However, ther...

AI Technical Summary

Problems solved by technology

Among them, the slit charge does not have high requirements on the holes, and the charge is well-made and widely used. However, the application of the slit charge is mostly based on the slit of the charge, the effect of energy gathering is limited, and the energy of the explosive is not fully utilized.

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