Non-stop drilling slag protection blasting cartridge used outside drill rod in sleeving mode

Abstract

The invention provides a non-stop drilling slag protection blasting cartridge used outside a drill rod in a sleeving mode, and relates to the field of blasting. The non-stop drilling slag protection blasting cartridge used outside the drill rod in the sleeving mode is characterized by comprising a blasting cartridge body and an ignition initiation device arranged in the blasting cartridge body, wherein the space between the blasting cartridge body and the rock wall surface is filled with explosive connected with the ignition initiation device, and sealing assemblies are arranged on the two sides of the explosive in the length direction of the blasting cartridge body. According to the non-stop drilling slag protection blasting cartridge, the space between the drilling rock wall surface andthe blasting cartridge body is fully filled with the explosive, and the sealing assemblies are used for enabling the explosive to fill the closed space, so that the blasting impact acting force of theexplosive can act on the rock wall surface most comprehensively and efficiently, and then the blasting power is improved; and the slag protection blasting cartridge plays a slag protection role on the drill rod, so that the drill rod and the drilling whole form non-stop drilling blasting. The non-stop drilling slag protection blasting cartridge is simple in structure, low in use cost and convenient to popularize in a large range.

Description

technical field [0001] The invention relates to the field of blasting, in particular to a non-stop drilling and slag protection blasting tube which is used outside a drill pipe. Background technique [0002] During underground mine mining operations, eye positions are first arranged on the face of the mine, and blasting holes of a certain depth are drilled on the eye positions. Then, explosives are loaded into the holes and detonation is performed using a nonel. [0003] 1. After the blast hole is drilled, clean the blast hole, load explosives and nonel tubes, and detonate directly. At this time, a part of the energy released by the explosive after the explosion will be released in vain from the direction of the blast hole. This blasting method will greatly reduce the energy of the explosive, resulting in poor blasting effect and high cost. [0004] 2. In order to improve the blasting efficiency and make the explosives more effective, after the blastholes are drilled, clean...

AI Technical Summary

Problems solved by technology

If plugging with cement clay, due to the high viscosity, the cement clay cannot be sent to the depth of the blast hole and is in close contact with the explosive, so it can only be blocked at the end of the blast hole, so that there is a gap between the explosive and the mortar clay. An air pocket is formed, the reaction force is reduced, and the blasting effect is reduced

[0006] At the same time, the above three blasting methods need to stop the drill pipe operation, and slag cleaning is required after the blasting is completed.

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