A charging method for deep hole blasting in rock roadway

A technology of deep hole blasting and charging, which is applied in blasting, earth square drilling, mining equipment, etc. It can solve the problems of high failure rate of filling explosives, deformation of explosives, time-consuming and labor-intensive charging, etc. low effect

A technology of deep hole blasting and charging, which is applied in blasting, earth square drilling, mining equipment, etc. It can solve the problems of high failure rate of filling explosives, deformation of explosives, time-consuming and labor-intensive charging, etc. low effect

CN108301840BActive Publication Date: 2020-08-21CHINA UNIV OF MINING & TECH (BEIJING)
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  • A charging method for deep hole blasting in rock roadway
  • A charging method for deep hole blasting in rock roadway

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Effect test

Embodiment 1

[0033] see figure 1 As shown, the embodiment of the present invention is a method for charging explosives in deep hole blasting in rock roadways, which is mainly used in blasting projects such as roadways, tunnels, mines, etc., comprising steps:

[0034] Step S1, place the emulsion explosive on the conveying rod according to the filling position of the emulsion explosive in the blast hole;

[0035] In this step, it can be understood that the length of the delivery rod is at least the same as the depth of the blasthole; Same, for example, the depth of the blasthole is 5m, the length of the conveying rod is 5.5m, the actual length of the conveying rod that needs to extend into the blasthole is 5m, and the exposed 0.5m, the blasting requires that the emulsified explosives be filled between 4m and 5m in sequence, then according to the emulsified The position where the explosives are finally placed in the blast hole is to place the emulsion explosives sequentially between 4.5m and...

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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...

Claims

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Application Information

Patent Timeline
21 Aug 2020
Publication
CN108301840B
IPC
E21D9/00; F42D1/10
CPC
E21D9/006; F42D1/10
Inventors
王雁冰