Blasting equipment for water-spaced annular non-coupling charging in blast hole

Abstract

The invention discloses blasting equipment for water-spaced annular non-coupling charging in a blast hole, which comprises a double-layer sleeve arranged in the blast hole, the double-layer sleeve is divided into an outer pipe and an inner pipe, an annular gap is formed between the outer pipe and the inner pipe, water is contained in the annular gap, the bottom of the inner pipe is of a closed structure, explosives are contained in the inner pipe, and a detonation explosive package is arranged at the bottom of the inner side of the inner pipe. The blasting equipment has the characteristics of uniform blasting stress and annular non-coupling charging capable of the utilization rate of explosives.

Description

technical field [0001] The invention relates to the technical field of hydraulic blasting, in particular to a blasting device in which water intervals in a blast hole are circumferentially uncoupled with charge. Background technique [0002] Water pressure blasting is a blasting technique in which explosives are placed in a restricted limited water area. When explosives explode, the energy transfer and incompressibility of water are used to apply pressure evenly to the medium to break the medium. [0003] The current hydraulic blasting is generally not coupled with charges in radial intervals, that is, one section of the blasthole is filled with water, one section is charged, another section is filled with water, and another section is charged, so that the charges are repeatedly spaced. A blasting method that does not couple charges at intervals is cumbersome to charge, and the degree of fragmentation of the hole wall is also different. The degree of fragmentation is high at...

AI Technical Summary

Problems solved by technology

[0003] The present water pressure blasting generally uses radial intervals without coupling charges, that is, one section of the blasthole is filled with water, one section is charged, another section is filled with water, and another section is charged, so that the charges are repeatedly spaced. A blasting method that does not couple charge at intervals, which is troublesome to charge, and the degree of fragmentation of the hole wall is also different. The degree of fragmentation is high at the place where the medicine is contained, and the degree of fragmentation is low at the place where the water is filled, resulting in an uneven blasting effect.

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