Non-stop drilling mesh type novel slag protection blasting cartridge sleeving outside of drill rod

Abstract

The invention provides a non-stop drilling mesh type novel slag protection blasting cartridge sleeving the outside of a drill rod, and relates to the field of blasting. The non-stop drilling mesh typenovel slag protection blasting cartridge sleeving the outside of the drill rod comprises a blasting cartridge body, an ignition and detonation device arranged in the blasting cartridge body and the drill rod connected to the interior of the blasting cartridge body in a sleeving manner. A blasting hole is formed in the blasting cartridge body, the space between the blasting cartridge body and thedrill rod is filled with explosive connected with the ignition and detonation device, and sealing assemblies are arranged on two sides of the explosive in the length direction of the drill rod. The space between the wall face of the drill rod and the blasting cartridge body is fully filled with the explosive, the sealing assemblies are used for filling the sealed space with the explosive, the blasting impact acting force of the explosive can be discharged out of the blasting hole and comprehensively and efficiently act on the rock wall face, the blasting power and precision are improved, and the drill rod is protected to normally work after blasting. The device 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 new type of slag-protecting blasting tube which is sheathed outside a drill pipe and continuously drills meshes. 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 blas...

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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