Determination method for sympathetic explosion distance of explosive

Abstract

The invention discloses a determination method for sympathetic explosion distance of an explosive. The method comprises the following steps: an explosive is prepared into main triggering explosive cartridges and explosive cartridges to be triggered with a diameter of 35 mm, with a specified density, and with a weight of 150 g or 200 g; the main triggering explosive cartridge and the explosive cartridge to be triggered are fixed on a rope or a rod; the two explosive cartridges are arranged at a certain distance; a No.8 detonator is inserted in the main triggering explosive cartridge and the insertion depth is two-thirds of the detonator length; the energy focusing cave of the detonator is arranged toward the explosive cartridge to be triggered during testing; after initiation of explosion, the sympathetic explosion condition of the explosive cartridge to be triggered is checked, after three successive sympathetic explosions, the longest distance is taken as the sympathetic explosion distance of the explosive. When the method is combined with the explosive application condition tests, the obtained results can directly reflect sympathetic explosion safety distance of an explosive under application conditions. The method can provide reliable reference data for storage, transportation and usage of explosives.

Description

technical field [0001] The invention relates to a method for measuring the detonation distance of explosives. Background technique [0002] Sacrificial explosion is the phenomenon that after the explosion of explosives, another explosive package can be triggered to explode at a certain distance. When the probability of detonation is 100%, the distance between the main explosive charge and the explosive charge is called the detonation distance. When the probability of the explosive charge being detonated is 0%, the distance between the main propellant charge and the propellant charge is called the detonation safety distance. The main factors affecting the detonation are the shock wave overpressure generated by the main charge, the action time and temperature, the radius of the fireball, the impact energy of the high-speed particles of the detonation product, the sensitivity and geometric size of the charge to be fired, and the different pairs of charges to be fired. Respons...

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Problems solved by technology

The sand field law restricts the specifications of the charge pack, and the test condition is exposed blasting, which is affected by factors such as sand grains

Because explosives are used in different environments and for different purposes, and are affected by factors such as different cartridge specifications and environmental conditions, the detonation distance of explosives determined by simple tests under specific conditions is not completely universal. Although the detonation distance obtained can be used to guide the storage distance of explosives, there is a large error in this storage distance.

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