Testing device and method for gap distance of cylindrical dynamite under constraint conditions

Abstract

The invention provides a testing device and method for gap distance of cylindrical dynamite under constraint conditions. The testing device comprises a rigid constraint pipeline (5), a first rigid anti-splash protection cover (4-1), a second rigid anti-splash protection cover (4-2), a first rigid claw-shaped supporting frame (6-1), a second rigid claw-shaped supporting frame (6-2) and a rigid witness steel-plate (7), wherein a positive dynamite distributing bag (2) and a negative dynamite distributing bag (3) are respectively arranged inside the rigid constraint pipeline (5) at a certain space; the positive dynamite distributing bag (2) is positioned at the middle position inside the rigid constraint pipeline (5); and the negative dynamite distributing bag (3) is positioned on one side ofthe positive dynamite distributing bag (2). The testing device and method provided by the invention has the advantages that the testing method is a testing method which is convenient to implement andcan effectively simulate the gap distance of the cylindrical dynamite under blasthole constraint conditions, thus determining the gap distance of the cylindrical dynamite under the blasthole constraint conditions and improving the accuracy of gap distance tests.

Description

technical field [0001] The invention belongs to the technical field of testing the detonation distance of columnar explosives, and in particular relates to a testing device and method for determining the detonation distance of columnar explosives under constraint conditions. Background technique [0002] Sacrificial detonation is a phenomenon that after the explosion of the main explosive package, the detonation of the fired explosive package separated by a certain distance is caused. The distance between the main charge pack and the sent charge pack is called the main charge pack spacing, and the maximum distance at which the main charge pack can detonate the sent charge pack is called the detonation distance of the explosive. The detonation distance is of guiding significance for the determination of segmented charge, blind shot treatment and reasonable hole network parameters in engineering blasting. It is also an important basis for determining the safety distance in the...

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Problems solved by technology

[0004] The above method for testing the detonation distance of explosives mainly has the following disadvantages: there is no strict regulation on the nature of the supporting medium, that is, sand, resulting in different wave impedances of the supporting medium, and there is a problem that there are certain differences in the detonation distance measured in different regions

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