Deep hole blasting charging hole sealing method

Abstract

The invention discloses a deep hole blasting charging hole sealing method, which comprises the following steps: sequentially putting a plurality of sections of carbon dioxide cracking devices into a blast hole, sealing the opening of the blast hole through hole sealing devices, grouping the plurality of sections of carbon dioxide cracking devices pairwise from top to bottom, and arranging release heads of the carbon dioxide cracking devices positioned at the upper part in each group downwards; the release heads of the carbon dioxide cracking devices located on the lower part are arranged upwards, and during detonation, the multiple sections of carbon dioxide cracking devices are detonated at the same time. Blasting punching can be avoided, and the blasting safety is improved.

Description

technical field [0001] The invention belongs to the technical field of carbon dioxide blasting, and in particular relates to a method for charging and sealing holes in deep hole blasting. Background technique [0002] Liquid carbon dioxide blasting technology is a kind of high-pressure gas blasting. The blasting principle is to generate high temperature through electric ignition to generate high temperature to gasify the liquid carbon dioxide in the cracker. The rapid expansion of carbon dioxide gas generates high pressure to open the energy drainer and release high-pressure gas instantly. It acts on the blasted objects to achieve various goals such as mountain opening, tunneling, demolition and underground mining. Compared with the blasting construction of explosives, carbon dioxide blasting technology is safer, and its transportation, storage and use do not require approval; and it has high construction efficiency and less damage to the environment. [0003] Considering f...

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Problems solved by technology

[0003] Considering factors such as different rock strengths, mining depths, and detonation methods, it is necessary to design a reasonable blasting plan according to the site conditions, and put multiple carbon dioxide crackers in series into the blast hole. At the moment of detonation, the crackers in the blast hole will Rush out of the blast hole under the strong reaction force of the fast ejected gas, which will easily cause damage to the cracking tube; at the same time, the gas in the confined space will diffuse and overflow, which greatly reduces the blasting power and greatly increases the blasting rate of carbon dioxide blasting. Risk, thus affecting the popularization and use of carbon dioxide blasting

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