Method for quantitatively determining sympathatic detonation of explosive

Abstract

The invention provides a method for quantitatively determining sympathatic detonation of an explosive, and belongs to the technical field of blasting. The method comprises the following steps: fixinga continuous resistance wire probe to centers of a detonating cartridge and a detonated cartridge, integrally placing the detonating cartridge and the detonated cartridge with the continuous resistance wire probe in a semicircular pipe groove of a test support, and keeping the cartridges in the same axis; regulating the sympathetic detonation distance to be in preset value L by moving the detonated cartridge, and connecting a probe led out from the tail end of the detonated cartridge to a signal acquisition instrument through a coaxial cable; inserting a detonator into a detonating end of thedetonating cartridge, starting the signal acquisition instrument, detonating the explosive, and recording a voltage signal curve of the continuous resistance wire probe by the signal acquisition instrument; converting, thus obtaining a detonation wave-impact wave time travel curve; comparing a detonation wave travel with the length of the cartridges, thus judging whether the detonated cartridge isin sympathatic detonation or not. A measurement system is simple, the cost is lower, a result is direct and reliable and is basically not affected by a testing environment, and the explosive amount is not limited.

Description

technical field [0001] The invention belongs to the technical field of blasting, and in particular relates to a method for quantitatively judging explosive detonation, which can be used to quantitatively judge whether explosive detonation occurs. Background technique [0002] The detonation of explosives refers to the phenomenon that after the explosion of an explosive, another explosive explodes at a certain distance. The explosive that explodes first is called the main charge, and the explosive that is detonated is called the secondary charge. The maximum distance of the sacrificial explosion is called the sacrificial explosion distance. The detonation distance is an important performance index for judging the quality of explosives. Its size reflects the difficulty of detonation of explosives under the action of shock waves. It is of great significance to the safety management of explosives in the process of production, transportation, storage and use. . [0003] People ...

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Problems solved by technology

[0005] (1) The method of observing whether there are residual explosives on the scene is better when judging the detonation of industrial explosives with a large amount of charge, but the method of visual inspection cannot judge the reaction state of the explosives (complete detonation, partial detonation, detonation, etc.) explosion, deflagration, combustion), especially for high detonation velocity explosives, this qualitative method cannot analyze the detonation development of explosives

[0006] (2) The ability of the witness board to judge the reaction state of the fired explosive is limited, the judgment boundary is blurred, and it is not easy to install in the suspension method, and the test cost will be increased when a large number of tests are carried out at the same time

[0007] (3) When using a high-speed camera, the equipment is expensive, strict protection is required, the operation is complicated, the test cost is high, and it is not suitable for large-scale testing in the field

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