JPH0350199B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention improves the safety of blasting work, which is widely used in construction work, civil engineering work, quarrying work, etc., and also aims to smooth and streamline the work procedure. The purpose of the present invention is to provide an in-hole small-splitting blasting device that can meet various conditions.

Conventional blasting operations use dynamite, which is a nitrogel-based colloid-like explosive with a content of more than 6% wrapped in paper, an industrial detonator and fuse, or an electric detonator leg, and a detonator cap. , detonator insertion hole rod,
Prepare blasting equipment such as a charging rod and an anchor, select the blasting method, explosives, and amount according to the conditions at the site to be exposed to the bomb, and then attach the fuse to the detonator. Be prepared to attach a detonator to the cartridge. On the other hand, appropriate holes should be drilled at the site where the blast is to be made. These holes are drilled by considering various aspects such as hole diameter, hole angle, number of holes, and hole position. Next, explosives will be loaded into the borehole, but this work is
Thoroughly clean the hole drilled at the site to be blasted, and then carefully insert the cartridges into the blast hole one by one with a ramming rod, adjusting the length of the hole each time so that there are no gaps between the cartridges. Charging is carried out while measuring the difference. After that, the material (anchor) is carefully filled into the blast hole, being careful not to damage the fuse. After that, it is carried out through the following steps: ignition and explosion.

However, blasting work using this conventional method is highly dangerous and has resulted in numerous accidents. For example, (a)
An example of dynamite exploding when it was forcibly pushed in while being loaded; (b) An example of dynamite exploding during a continuity test of an electric detonator; (c) An example of dynamite exploding during a continuity test of an electric detonator. (d) An example of an explosion due to the time it took to ignite it with water; (e) An example of an explosion while searching for unexploded dynamite; (f) An example of an explosion of unexploded residual medicine during removal work; (g) A large-scale explosion. left behind by blasting
Examples of TNT exploding, (chi) examples of residual dynamite exploding during drilling in Jiyambo, (li) cases of small-splitting blasting,
There have been various accidents such as cases of rocks flying into the air.
Of these various accidents, the most frequent and dangerous ones are: firstly, accidents associated with post-treatment of unexploded explosions, secondly accidents during explosion or detonator loading work, and thirdly accidents due to errors in calculating explosive force. .

In order to prevent such accidents, multiple explosives, detonators, etc. are loaded into a long cylindrical body, and small pieces are blasted continuously at almost the same time to prevent unexploded residual charges from being generated. There was something that did. However, the problem with small-split blasting in a long hole is that the preparation work and design cannot be easily carried out because it is necessary to design the explosion on-site depending on the conditions of the exposed site, the explosion location, the explosive force, etc. .

The first purpose of the present invention is to prevent these accidents as much as possible and to enable highly safe blasting work.The second purpose of the present invention is to enable explosion preparation work to be carried out easily and reliably, and to make blasting work possible. The third objective is to improve the efficiency, and the third objective is to facilitate the design of explosive force and explosion location to increase adaptability to field conditions.

In order to achieve the above-mentioned object, the present invention includes explosives, detonators, In an in-hole small blasting device that is loaded with fuses, etc., a long cylindrical body is divided at predetermined intervals to form a plurality of chambers, and explosives, detonators, and fuses are placed in any of the divided chambers. This is an in-hole small-split blasting device that can accommodate. and,
As a specific embodiment, a long cylindrical body is formed from a container part and a lid part that can be separated or opened, and the container part and the lid part are arranged at predetermined intervals in the cylindrical body so that they correspond to each other. It can be divided to form a chamber in which explosives, detonators, and fuses can be stored, or it can be formed by dividing a long cylindrical body into several blocks for loading explosives and blocks for securing space. A pair of connecting parts and a connecting receiving part are provided at the front and rear of each block, and explosives, detonators,
The fuse can be stored.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments. Fig. 1 is a perspective view showing a state in which explosives are filled in a first embodiment of a blasting device according to the present invention; The figure is a perspective view showing the assembled state of the first embodiment.

In the figure, 1 is a blasting device, and this blasting device 1
It is formed into an elongated cylindrical body 2. The interior is divided into a plurality of chambers at predetermined intervals, and detonators 4, 4' with explosives 3, 3'3'' are placed in the divisions at positions determined based on calculations. ，
4'' and fuses 7, 7', 7'' are also loaded.
The cylindrical body 2 in this embodiment includes a vessel portion 2a and a lid portion 2.
It is formed so that it can be separated or opened into b.
Both the container part 2a and the lid part 2b are divided into sections 8, 8', 8'' at predetermined intervals so as to correspond to each other to form chambers.The operator divides the chambers into sections 8, 8', 8'' at predetermined intervals based on calculations. After storing the explosives 3, 3', 3'', the detonators 4, 4', 4'' and the fuses 7, 7', 7'' in the appropriate places in the chamber 8', 8'', close the lid part 2b. Assemble and fix the vessel part 2a and the lid part 2b into an integral cylindrical body 2 using the hook 9a, the fastener 9b, etc. (Fig. 2).At this time, the fuses 7, 7', 7'' is formed so as to extend to the outside of the cylindrical body 2 via a guide portion 5 of a hole or groove.

3 and 4 show other embodiments of the in-hole small-splitting blasting device according to the present invention, FIG. 3 is a perspective view showing the state before assembly of another embodiment of the blasting device, and FIG. The figure is a perspective view showing the assembled state of the second embodiment.

In this embodiment, the cylindrical body 2 is formed into a plurality of short blocks 2 ₁ , 2 ₂ , 2 ₃ , 2 ₄ . . . each block 2 ₁ , 2 ₂ , 2 3 , 2 ₄ .
A pair of connecting portions 10a and a connecting receiving portion 10b are provided at the front and rear of 2 ₄ . . . so that they can be freely combined and connected. Furthermore, there are two types of blocks 2 ₁ , 2 ₂ , 2 ₃ , 2 ₄ . . . explosive loading block X and space securing block Y. This explosive loading block X has an explosive loading section 1.
1 and a detonator loading section 12 are formed.

Therefore, the operator can combine the explosive loading block It is possible to assemble an optimal blasting device with a design that adjusts the explosion location and explosive force. In the illustrated embodiment, two blocks X and two blocks Y are shown, but it goes without saying that a plurality of blocks X and Y may be provided depending on the explosion design, or they may be connected at appropriate intervals.

In this way, the in-hole small-splitting blasting device 1 according to the present invention
Firstly, it forms an elongated cylindrical body 2, secondly, the inside of the cylindrical body 2 is divided into a plurality of sections, and thirdly, explosives 3, 3', 3''... and detonator 4,
4', 4'' and fuse 7, 7', 7'' are characterized by being able to be loaded by selecting their positions arbitrarily.
As a result, a plurality of explosives 3, 3', 3''... and detonators 4, 4',
4'' and fuses 7, 7', and 7'' can be loaded as designed.

When using this in-hole small blasting device 1, a long hole 13 into which the in-hole small blasting device 1 can be inserted is drilled at a predetermined location that will be the exposed site A (see Fig. 5). ). Then, the blasting device 1 is inserted into the long hole.
The explosion preparation work is completed by inserting the anchor 14 into the entrance (Figure 5 B). after that,
Several locations within the same hole are blasted into small pieces almost simultaneously or successively with small time differences (Figure 5 C).
As a result, small blasts can be divided into small pieces using a single long hole, making it possible to do the troublesome work of repeatedly blasting small pieces over and over again in one continuous blast. Natsuta (Fig. 5 d).

That is, the first feature of the present invention is that the blasting device is made of an elongated cylindrical body 2, in which explosives 3, 3', 3''... and detonators 4, 4', 4', etc. are placed at appropriate positions.
4'', fuse wires 7, 7', and 7'' can be freely selected and assembled and designed. This makes it easy to perform small-splitting blasting in which the explosion position, explosion strength, number of explosions, etc. can be freely adjusted. In particular, in the present invention, the assembly settings of the same-hole small-split blasting device 1 can be set outside in advance, so that the explosive loading work, which was conventionally dangerous and required skilled techniques, can be performed safely and accurately. Moreover, I was able to do it more efficiently. In addition, since continuity tests can be performed outside before blasting, misfires and loading errors can be discovered before they occur, and corrections are easy, so safety and reliability have been dramatically improved in this respect as well. .

In addition, the second feature of the present invention is that the explosion unit can be made small and dispersed small-split blasting can be performed.
As a result, errors and deviations for each explosion are reduced, so even if an accident occurs, it will be small, improving safety, and it is possible to create a design that is carefully tailored to the conditions of the bombed site, so you can achieve the desired shape. It can exert explosive force due to its size. As a result, it has become easier to blast deep, long holes, explode without throwing away rocks, and blast work that always creates a normally sloped surface.

Thirdly, misfire accidents due to disconnection of the fuse or leg wires,
Because it can be almost completely discovered and repaired through advance inspection, it has almost completely disappeared, and we have been able to eliminate the most common cause of misfires in the past.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the first embodiment of the in-hole small-splitting blasting device according to the present invention in a state in which explosives are being filled, and FIG. 2 shows the assembled state of the first embodiment. FIG. 3 is a perspective view showing another embodiment of the same blasting device before assembly, and FIG. 4 is a perspective view showing the second embodiment assembled.
Figures 1 to 2 are explanatory diagrams showing small-split blasting work using the present invention. 1...Small blasting device in the same hole, 2...Cylindrical body,
3, 3', 3''... Explosive, 4, 4', 4''... Detonator, 7, 7', 7''... Fuse, 10a... Connecting part, 10b... Connecting receiver, 13... Long hole, A...
A-bombed site.

Claims (1)

[Scope of Claims] 1. Explosives, detonators, fuses, etc. are loaded into a long cylindrical body that blasts several parts of a long hole at an atomic bomb site almost simultaneously or successively with small time differences. In the same-hole small-splitting blasting device,
A small in-hole blasting device characterized in that a long cylindrical body is divided at predetermined intervals to form a plurality of chambers, and explosives, detonators, and fuses can be stored in any of the divided chambers. Device. 2. A long cylindrical body is formed from a container part and a lid part that can be separated or opened, and the cylindrical body is divided at predetermined intervals so that the container part and the lid part correspond to each other to form chambers. The same-hole small-split blasting device according to claim 1, characterized in that explosives, detonators, and fuses can be stored in this chamber. 3. A long cylindrical body is divided into several pieces to form an explosive loading block and a space securing block, and each block is provided with a pair of connecting parts and a connecting receiving part at the front and rear thereof,
2. The in-hole small-split blasting device according to claim 1, wherein explosives, detonators, and fuses can be stored in any combination of both blocks.