A blast hole charging and plugging device

Abstract

The invention discloses a gun hole charging and plugging device which comprises a disc and a head rod detachably connected with the disc. The disc comprises a tray, fins and a center through hole. The fins are arranged in the mode of surrounding the outer wall of the tray and have elasticity and toughness, and the center through hole is formed in the center of the tray. The fins can be inserted into a gun hole, and the outer diameter of the fins is larger than that of the gun hole. The fins are provided with anti-skid structures capable of being clamped and fixed to the wall of the gun hole. The bottom of the tray is provided with a connection port in butt connection with the head rod. The problem that a cartridged explosive slides when being charged into an upward hole is effectively solved, the non-coupling charging structure is actually achieved, interval charging can be achieved, accordingly, the oversized fragment output rate is effectively reduced, blasting vibration is reduced, and safety and stability of sinking and driving engineering are maintained. In addition, the explosive consumed cost is reduced, the workload of workers is reduced, and the device plays a quite important role in developing enterprises, reducing the operation cost and improving productivity.

Description

technical field [0001] The invention belongs to the charging technology of engineering blasting blastholes, and in particular relates to a blasthole charging and blocking device, which is especially suitable for charging upwards to the blastholes. Background technique [0002] The charging work is an important factor affecting the blasting effect. The charging process is carried out in a harsh environment of high humidity, high well temperature, and darkness, accompanied by complex hole-forming conditions, such as curved hole lines, rough hole walls, and There are convex stones and other issues. These problems are easy to reduce the work efficiency of workers, and the complex hole-forming conditions are likely to cause problems such as drug jams, drug blockages, or rockfall, resulting in broken blasts and rejected blasts. Therefore, completing the charging work with high quality and high efficiency is the beginning of achieving good blasting effects. [0003] The blasting ...

AI Technical Summary

Problems solved by technology

In the upward-facing hole charging, the drug roll is easy to fall under the action of its own weight, and it is difficult to realize uncoupled charging.

In actual operation, for the convenience of construction, workers usually use two methods to fix the explosive rolls. One is to block the explosives with gun mud once every time 1-2 rolls of explosives are loaded. In this way, the longer the charge length, the longer the gun mud; The second is that every time 1-2 rolls of explosives are loaded, the rolls are squeezed and compressed by external force, causing the package of the rolls to rupture and expand to achieve the purpose of attaching to the hole wall. There are still great difficulties in the actual operation of the uncoupled charge to the hole

[0006] The air-spaced charge is a charge structure in which an air space is reserved in the axial direction of the blasthole or filled with an inert medium. The blasting effect of this charge structure is similar to that of the uncoupled charge structure. Air column air spacer, and this equipment is mainly used in the blasting of downholes in open-pit mines. Years of production practice has proved that the air spacer has obvious shortcomings in actual production and use, because the air bag of the air spacer It is placed on the air hose to the required position under the action of its own weight. Due to the limitation of the air hose, the air spacer cannot be applied to the upward hole charging work.

[0007] To sum up, in the current blasting charge structure, uncoupled charge and spaced charge are ideal charge structures. However, the charge devices in the prior art have various defects when facing the upward hole. Lead to unsatisfactory blasting effect

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