An Auxiliary Device for Measuring the Detonation Velocity of Emulsion Explosives in Boreholes

Abstract

The invention discloses an auxiliary device for measuring the detonation velocity of emulsion explosives in a blasting hole. The lower end of the fixed wire is fixed with the upper part of the target wire plate, and the lower part of the target wire plate is hung with a heavy object through a pulling wire; the wire is composed of four thin wires , the ends of these four thin wires are connected with an enameled copper wire, the two enameled copper wires are wrapped and stuck in the upper target wire slot, and the ends of the two enameled copper wires are wrapped with waterproof tape; the other two The enameled copper wires are wound and stuck in the lower target wire slot, and the ends of the two enameled copper wires are wrapped with waterproof tape. The heat generated during blasting connects the lower and upper enamelled copper wires and the corresponding thin wires successively. By calculating the ratio of the distance between the upper and lower target wire slots and the time difference of the connection signal, it is obtained that the emulsion explosive is in the blast hole. This overcomes the defect that the electrical measurement method and the detonating cord method cannot accurately measure the explosion velocity in the hole; and because the auxiliary device adopts cheap common components, the manufacturing cost of the auxiliary device is low.

Description

technical field [0001] The invention belongs to the field of detonation velocity measurement, in particular to an auxiliary device for measuring the detonation velocity of an emulsion explosive in a blast hole. Background technique [0002] Detonation velocity is an important parameter for the performance of reactive emulsion explosives. The existing test methods mainly include electrical measurement method and detonating cord method. The above two methods can measure the detonation velocity of emulsion explosives under known constraints such as paper cylinders, plastic cylinders or steel cylinders, and use these constraints to simulate the detonation velocity in the blasthole. However, emulsion explosives under different constraints There is a significant difference in the detonation velocity of the two methods, and the two methods cannot measure the real detonation velocity of the emulsion explosive in the blasthole. [0003] Existing in-hole continuous detonation velocit...

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Problems solved by technology

The above two methods can measure the detonation velocity of emulsion explosives under known constraints such as paper cylinder, plastic cylinder or steel cylinder, and use this constraint condition to simulate the detonation velocity in the blasthole. There is a significant difference in the detonation velocity of the emulsion explosive, and these two methods cannot measure the real detonation velocity of the emulsion explosive in the blast hole

[0003] The existing in-hole continuous detonation velocity meter can measure the in-hole detonation velocity, but due to its high price (about one hundred thousand yuan), it has not been widely used in the civil explosion industry

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