A charging method for deep hole blasting in rock roadway

Abstract

The embodiment of the invention discloses a charging method for medium deep hole blasting in a rock roadway, and relates to the technical field of medium deep hole blasting engineering. The failure rate is low, and the simple and convenient and labor-saving effects during charging are achieved. The charging method comprises the steps that emulsion explosive is placed on a conveying rod according to the filling position of the emulsion explosive in a blasthole; the section of the conveying rod is in a semi-circular-ring shape and used for bearing the emulsion explosive, and a wire winding structure is arranged in the length direction of the conveying rod and used for fixing an ignition guide wire; and the conveying rod extends into the blasthole by the predetermined depth, and the emulsionexplosive is conveyed into the specified position in the blasthole. The charging method for medium deep hole blasting in the rock roadway is suitable for blasting engineering such as roadways, tunnelsand mines.

Description

technical field [0001] The invention relates to the technical field of medium and deep hole blasting engineering, in particular to a charge method for medium and deep hole blasting in rock roadways. Background technique [0002] In the rock roadway constructed by the traditional drilling and blasting method, the depth of the blast hole is about 2-2.5m. When filling the explosives, a single roll of emulsion explosive (33cm in length and 3.5cm in diameter) can be inserted into the blast hole in sequence to 4-2.5m. When rolling 5, push all the explosives to the bottom of the blast hole with a gun stick, then plug the gun mud, and connect the wires to blast. [0003] In the process of realizing the invention, the inventor found that the method of loading explosives has the following problems: 1. Since the gun sticks are used to pound in, the roll of explosives that is in contact with the gun sticks on the outside is likely to be overstressed. 2. If it is a reverse detonation, t...

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Problems solved by technology

[0003] In the process of realizing the invention, the inventor found that the method of loading explosives has the following problems: 1. Since the gun sticks are used to pound in, the roll of explosives that is in contact with the gun sticks on the outside is likely to be overstressed. 2. If it is a reverse detonation, the detonator is inserted on the first roll of medicine. During the process of pushing in, the detonator may deviate from its original position or appear to fall; 3. The wire connecting the detonator moves in with the explosive and the detonator, and the wire is prone to damage

[0004] The above-mentioned problems existing in the existing explosives loading technology that uses gun sticks to pound explosives into the blast hole, for medium and deep hole blasting with a blast hole depth of 3-5m, the failure rate of loading explosives will be relatively higher, and charging is time-consuming strenuous

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