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

A technology of constraint conditions and testing devices, which is applied in the direction of material explosion, can solve the problems of different wave impedances of supporting media, differences in detonation distances, etc., and achieve the effect of facilitating implementation and improving accuracy

CN109668934APending Publication Date: 2019-04-23中交一公局第五工程有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-04-23

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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.
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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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Embodiment Construction

[0041] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] The test device and method for determining the detonation distance of columnar explosives under constraint conditions provided by the present invention is a test method that is convenient and implementable and can effectively simulate the detonation distance of columnar explosives under constraint conditions of blastholes, thereby determining the distance of columnar explosives in blastholes. The detonation distance under constraint conditions improves the accuracy of the detonation distance test.

[0043] The invention provides a test device for determining the d...