KR20230062482A - Blasting Method With Paper Tube - Google Patents

Abstract

The present invention relates to a blasting method by using a blasting means, which may improve blasting efficiency and perform an eco-friendly construction by using a blasting tube (a blasting branch pipe and the like) for adjusting explosive filling. To this end, the present invention comprises: a prearrangement step of preparing and fabricating a blasting branch pipe and guaranteeing the depth and arrangement of a blasting hole; a blasting hole punching step of punching a hole on site according to the guaranteed facts; a blasting branch pipe insertion step of inserting a blasting branch pipe into the punched blasting hole; a booster insertion step of inserting a booster to which a detonator is connected; a filling step of filling a filling material into the blasting hole; and a blasting step of performing blasting. Blasting ranges from operations for finely crushing large rocks for the rock ground, mines, quarries, tunnel constructions, cutting constructions of concrete structures, road constructions, underground excavation constructions for buildings, power cable tunnels, pipeline constructions and subway constructions to large-scale operations for exploding rocks of thousands and tens of thousands of tons at once. During the blasting design, an adequate blasting method may be adopted according to the pattern thereof. According to the blasting tube in one embodiment of the present invention, in order to precisely measure the contents, a gradation (b10) is drawn according to the length thereof at an adjustment pipe unit (120). Based on the gradation (b10), the size of an explosive to be filled in an explosive filling pipe (a10) may be adjusted while checking the inserted and coupled length of an explosive filling pipe unit (110) coupled to one end portion of an adjustment pipe unit (120).

Description

Blasting tube that controls the filling of explosives {Blasting Method With Paper Tube}

The present invention relates to a blasting method using a blasting means capable of improving blasting efficiency and environmentally friendly construction using blasting tubes and branch pipes. Explosives used in blasting include encapsulant explosives, emulsion explosives, water-containing explosives, bulk explosives, and the like. Blasting can be used to crush large chunks of rock into small pieces in rock foundation, mine, quarry, tunnel construction, concrete structure cutting work, road construction, building underground excavation work, power conduit construction, pipeline construction, and subway construction. There is even blasting rocks, and when designing blasting, the blasting method is determined in response to such a pattern. In general, a general blasting method in which a blasting hole is drilled in a bedrock and blasted by filling the inside of the blasting hole with explosives and sealants, a line crack blasting method for the purpose of arranging a slope, and explosives and sealants in a hole drilled to reduce vibration There is a blasting method by distributing explosives that are alternately arranged and blasted.

In general, the blasting method is to drill holes at a predetermined depth and in a predetermined arrangement on a bedrock to be blasted, then charge a detonator and explosives into the drilled holes to form a blasting hole, and then block the blasting hole with a sealant to spread the color, The rock mass is cut by detonating explosives loaded with a blaster. Here, energy generated when explosives used for rock destruction explode can be largely classified into shock wave energy and gas pressure energy. At this time, a shock wave due to the detonation of the explosive and gas pressure due to the combustion of the explosive are generated. The contribution of the shock wave to rock destruction corresponds to about 15%, and the contribution to rock destruction by the gas pressure of the explosive corresponds to approximately 85% do. That is, the destruction of rocks by the explosion of explosives is mainly due to the action of gas pressure. From the viewpoint of the mechanics of rock destruction by explosives, rock destruction is caused by the simultaneous action of shock wave energy and gas pressure energy, and each step undergoes an energy transfer process. The explosive energy of the gunpowder exploded in the blast hole is primarily used for the destruction of rocks, and the rest is converted into energy that causes vibration, noise, and scattering.

In the case of Patent Registration No. 1384820 of the example of FIG. 1 (a), after drilling a blast hole in the rock mass, a plurality of tubes filled with explosives are connected and inserted, and then the explosives are blasted to break the rock mass, and the tube tube is filled with It has a pipe and an air pipe connected thereto. Guide grooves are formed along the length of the tube pipe, so that the direction of blasting can be guided toward the guide groove, back break, which destroys the rock mass beyond the design, is prevented, and intensive crushing is performed in the direction of crushing the rock mass. provided to make it happen. The air pipe is integrally formed on top of the filling pipe, the inlet is formed open, and the outlet at the bottom is formed with an input hole through which explosives are injected into the filling space. An air gap space in which air is trapped and stayed is formed inside the air tube to reduce blasting pollution such as blast pressure, fly stones, vibration, and noise generated during blasting, thereby providing precise control of blasting. Based on this, a blast hole drilling step of drilling a plurality of blast holes in a predetermined arrangement and depth in the bedrock; Explosives filling step of filling the explosives into the filling space through the input hole in the plurality of tubes; Connecting a plurality of tube tubes filled with explosives to each other, connecting another tube tube to the top of the tube tube to form an air gap space inside the air tube; Tube insertion step of inserting a plurality of tubes into the blast hole; A charge inserting step of inserting a charge charge to which the detonator is connected to the inside of the filling pipe of the blast hole or to the top of the charge pipe inserted into the blast hole; A filling step of filling the filling material in the remaining space of the blasting hole; A detonation step of detonating the detonator with a blaster from the outside to crush the bedrock; consists of.

In the case of Patent Registration No. 316161 of FIG. 1 (b), vibration, noise, and scattering are reduced. In detail, after forming an air layer having a free surface by inserting multiple layers of air tubes of a predetermined length into the blasting hole, a certain portion of the inlet of the blasting hole is covered, and then the detonator is detonated to explode. An air tube made of a synthetic resin member is inserted into the blast hole to shorten the total color length by the length of the air tube, thereby increasing the projected area of the rock on the free surface side during an explosion. The explosives loaded in the blasting hole and the air layer of the air tube are alternately arranged in layers, and the uppermost air tube inserted in the blasting hole is sealed with gravel, sand, or a rubber stopper. As the air tube is buried in explosives, it reduces the amount of explosives used, distributes the blasting vibration toward the internal artificial free surface, reduces the amount of charge per volume when loading explosives, and increases the explosion length to the free surface as much as possible to reduce the occurrence of boulders. can be greatly reduced.

Registered Patent No. 1384820 (2014.04.07.) Registered Patent No. 316161 (2001.11.17.)

When blasting is performed according to the various requirements of the site, the size ratio of the filling tube and the air tube of the blasting tube, which is the blasting means, can be set differently depending on the situation. Here, it is not easy to respond flexibly when the length is fixed to a predetermined standard and size, so when using a product that is supplied and cut in advance to a predetermined standard from the outside before work, the type of rock mass around the explosive and on the free surface However, it is not easy to install by changing the tube length according to the surrounding environment such as size or ground pressure. Therefore, when an air tube of a certain length is uniformly used without considering the work site or surrounding conditions, the total force of the explosion may not increase and the effect of damping vibration may not be large. Furthermore, in order to manufacture the air tube, the inconvenience of manufacturing, such as injecting air into the air tube and sealing it with a separate machine, and installation costs such as transportation may increase. In addition, when the member used for manufacturing the tube pipe is made of synthetic resin, it adversely affects the environment.

The blasting tube for controlling the filling of the explosives of the present invention to meet the above problems is solved,

A tube-shaped tube-shaped tube portion 110 having a length and an accommodation space therein, a tube-shaped control tube portion 120 having a length and an accommodation space therein, and a tube-shape having a length and an accommodation space therein. Including the air pipe portion 130 of,

In the charge pipe part 110, the inner diameter of the charge pipe part 110 corresponds to the outer diameter of the control pipe part 120, and the charge pipe blocking part 111a is provided at one end 111 of the charge pipe part 110, ,

In the control pipe part 120, the outer diameter of the control pipe part 120 corresponds to the inner diameter of the charge pipe part 110 and the inner diameter of the air pipe part 130, and the control pipe blocking part is at the other end 122 of the control pipe part 120. (122a),

In the air pipe part 130, the inner diameter of the air pipe part 130 corresponds to the outer diameter of the adjusting pipe part 120, and the other end 132 of the air pipe part 130 is provided with an air pipe blocking part 132a,

One end 121 of the control pipe part 120 is fitted to the other end 112 of the charge pipe part 110, and the other end 122 of the control pipe part 120 is fitted into one end 131 of the air pipe part 130 ,

The common space between the charge pipe part 110 and the control pipe part 120 is provided as a charge pipe, and the space between the other end 122 of the control pipe part 120 and the other end 132 of the air pipe part 130 is provided as an air pipe. become,

The charge tube 110 and the control tube 120 move in the mutual longitudinal direction to adjust the size of the charge tube, and the control tube 120 and the air tube 130 move in the mutual longitudinal direction to adjust the size of the air tube , In the blasting tube including the fixing part (b),

The fixing part (b) includes a fixing pin (b20) having a plurality of drilled fixing holes (b11, b12, b13) and a length,

The fixing holes b11, b12, and b13 include the fixing hole b11 of the control pipe part 120, the fixing hole b12 of the air pipe part 130, and the fixing hole b13 of the charge pipe part 110, respectively. The fixing holes (b11, b12, b13) are formed by digging holes at intervals,

In the fixing method, when one of the fixing holes (b12) of the air pipe part 130 coincides with any one of the fixing holes (b11) of the adjusting pipe part 120, the two fixing holes are simultaneously inserted into the fixing pins (b20) and fixed. , If any one of the fixing holes (b13) of the charge pipe part 110 coincides with any other of the fixing holes (b11) of the adjusting pipe part 120, the two fixing holes are simultaneously inserted into and fixed with different fixing pins (b20),

The scale b10 is designed along the length of the control tube unit 120 to accurately measure the contents, and the length of the tube unit 110 is coupled to one end of the control tube unit 120 based on the scale b10. It is provided to adjust the size of the explosives to be filled in the charge tube (a10) while checking the length to be fitted and coupled.

As a blasting means, the blasting tube has charge tubes and air tubes that can be adjusted in size at the upper and lower ends, and its length can be changed according to the surrounding environment such as the type, size or ground pressure of the rock mass around the explosives and on the free surface, so it is easy to work, The speed is improved because the length of the branch pipe can be easily, quickly and accurately changed according to the surrounding environment such as the type or size of the rock mass around the explosive and the free surface, or the ground pressure.

It is possible to reduce the hassle of attaching a separate pipe or a pipe replacement member and sealing it with a sheet in order to install the air pipe.

On the other hand, if explosives are filled in the body of a blasting tube made of an eco-friendly material, that is, a paper member, during construction by the blasting means or blasting method, environmental pollution caused by fragments of the blasting tube, which is the blasting means during blasting, can be reduced.

1 (a) is an explanatory diagram illustrating a block diagram of a side section and a work flow of a site for applying a blasting method.
Figure 1 (b) shows a side cross-section of a site for applying the blasting method using a tube.
2 (a) is an exploded perspective view of a branch pipe for blasting.
Figure 2 (b) is an assembled perspective view of the branch pipe for blasting.
3 (a), 3 (b), and 3 (c) are state diagrams illustrating the operation of the branch pipe for blasting, respectively.
4 (a) and 4 (b) are state diagrams illustrating the operation of the control tube blocking unit 122a in another embodiment in cross section.
5 is an explanatory diagram of a blasting method illustrating a workflow in a block diagram.

A blasting tube provided in a blasting method using a paper tube, for example, a paper tube for blasting, is a tube (paper tube) of a paper member in which an accommodation space is provided (configuration, provision, formation, provision), After filling the space with explosives or air, it is used to blast and crush the ground such as bedrock by exploding the filled explosives at the blasting site. The paper pipe of the paper member is an eco-friendly member that does not cause environmental hormones or soil contamination even when mixed with the ground after blasting. Explosives to be filled (loaded) include encapsulated explosives, bulk explosives, and hydrous explosives. Anpo explosives have a low specific gravity and low explosive speed, have a static effect using gas pressure, and are advantageous when blasting soft or normal rocks. After placing the emulsion-based explosives connected to the detonator on the bottom and filling the remaining space with the explosives, the reaction speed of the explosives themselves increases, increasing the speed and power of the explosives. is low, and can be applied to the blasting of normal or hard rocks. When only emulsion-based explosives are used or a small amount of eyeball explosives are added thereto, the explosive speed and power are greatly increased, it has dynamic effect characteristics, and is advantageous when blasting hard rocks.

In FIGS. 2 and 3, the branch pipe 100 for blasting of the present invention includes a tube-shaped charging tube 110, a control tube unit 120, and an air tube unit 130 each having a length and having a space therein. After the components are manufactured separately, they are assembled (combined) to increase site adaptability, flexibility, work speed, and work efficiency by setting mutual lengths in advance or adjusting later. A filling tube for filling and charging explosives, that is, an air tube for providing an air gap in which a free surface is provided by an air space filled with air and a charging tube is integrally provided.

The control pipe part 120 is inserted into the charge pipe part 110 in the longitudinal direction and interposed (fitted), and for this purpose, the inner diameter of the charge pipe part 110 is made to closely correspond to the outer diameter of the control pipe part 120. In addition, one end 111 of the charge tube unit 110 may be equipped with a charge tube blocking portion 111a, provided (constructed). Being closely matched means that there is no space between the contact surfaces so that explosives or air filled in the internal space do not leak to the outside, and the intervening coupling state is not released without artificial work and is fixed by the frictional force acting between the contact surfaces so that it is maintained ( combination) means that it is in a possible state. And the blocking part closes one or the other end to block and protect the explosives and air filled inside from the outside, and prevent leakage from the inside to the outside. It prevents external foreign substances (soil such as soil, rocks, debris, water, etc.) from entering the interior.

The outer diameter of the control pipe part 120 is made to closely correspond to the inner diameter of the charge pipe part 110 and the inner diameter of the air pipe part 130. One end 121 of the control pipe part 120 is open, and the other end 122 of the control pipe part 120 has a control pipe blocking part 122a.

The inner diameter of the air pipe part 130 is made to closely correspond to the outer diameter of the control pipe part 120. In addition, an air tube blocking unit 132a is provided at the other end 132 of the air tube unit 130 .

In the drawing of FIG. 3, the outer diameter of one end 121 of the control pipe part 120 is inserted into the inner diameter of the other end 112 of the charge pipe part 110 to form a coupling so that the communicating charge pipe a10 is provided, and the control pipe part ( The outer diameter of the other end 122 of 120 is inserted into the inner diameter of one end 131 of the air tube unit 130 to provide the air tube a20 to the inner space of the air tube unit 130. More specifically, the charge pipe (a10) is provided as a common space (communication space) formed by combining the charge pipe part 110 and the control pipe part 120, that is, one end 111 of the charge pipe part 110 It consists of an internal space between {ie, the tube blocking unit 111a} and the other end 122 of the control tube unit 120 (ie, the control tube blocking unit 122a). The air pipe (a20) is provided as a space created by combining the control pipe part 120 and the air pipe part 130, that is, the other end 122 of the control pipe part 120 (ie, the control pipe blocking part 122a) and the other end 132 of the air tube unit 130 (ie, the air tube blocking unit 132a).

According to the expansion and contraction of the length of the charge pipe (a10) caused by the movement (m02) of the charge pipe part 110 and the control pipe part 120 relative to each other in the longitudinal direction, the total space size (size) of the charge pipe (a10) is It is adjusted (in response to stretching). Similarly, when the control tube unit 120 and the air tube unit 130 move in the longitudinal direction and perform relative movement (m01), the size of the air tube (a20) space is correspondingly adjusted according to the expansion and contraction of the length of the air tube (a20). 3 (b) and 3 (c).

When the free surface generation is not greatly needed, in order to make the air pipe (a20) small, the other end 122 of the control pipe part 120/the other end 132 of the control pipe blocking part 122a and the air pipe part 130/air pipe The blocking portion 132a is placed close to each other. Conversely, in order to increase the size of the air tube a20 to create a free surface, the other end 122 of the control tube unit 120 / the control tube blocker 122a and the other end 132 of the air tube unit 130 / the air tube blocker 132a to be located farther apart. Accordingly, the other end 122 of the control tube unit 120/the control tube blocking unit 122a and the one end 131 of the air tube unit 130 are brought closer to each other.

In order to enlarge the charge tube (a10) in order to increase the use of explosives, the other end 112 of the charge pipe part 110 and the one end 121 of the control pipe part 120 must be placed close to each other, and accordingly, the charge pipe part 110 The other end 112 of the control pipe portion 120 and the other end 122/control pipe blocking film 122a are located far apart. Conversely, in order to reduce the amount of charge, to reduce the charge tube (a10), the other end 112 of the charge pipe 110 and the one end 121 of the control pipe 120 should be spaced apart, and accordingly, the charge pipe 110 ) One end 111 / one end 121 of the tube blocking portion 111a and the control tube 120 are in close proximity. That is, the other end 122 of the control tube unit 120 / the control tube blocking film 122a are all positioned close to the other end 112 of the charge tube unit 110.

In this way, it is possible to respond most flexibly and appropriately by adjusting the size of the charge pipe (a10) or air pipe (a20) in advance or directly on site according to the needs of the construction site situation, and separate devices and members , resizing can be handled very conveniently and quickly without the need for work.

Again, in FIG. 2, when the scale b10 is designed (marked) along the length of the control tube unit 120, it is possible to accurately, conveniently and quickly measure the contents, It is useful because it is possible to reduce the use of more than necessary explosives by quantifying the amount of explosives, and to be able to quantify when creating an air gap by filling air tubes with air. Using the scale (b10) of the control pipe part 120 as a reference (center), the length of the fitted tube part 110 and the air pipe part 130 coupled to one end and the other end of the control pipe part 120 ( Depth), the size of the explosives to be filled in the charging tube (a10) or the air gap of the air tube (20) can be adjusted.

And it may be provided with a fixing part (b) in order to maintain a controlled state from external load and pressure. To this end, a plurality of fixing holes (b11, b12, b13) drilled at intervals along the length may be formed, and the fixing holes (b11, b12, b13) are fixing holes (b11) , The fixing hole b12 of the air pipe part 130 and the fixing hole b13 of the charge pipe part 110 are included. A bolt-shaped fixing pin (b20) having a length is provided, and the fixing pin (b20) forms the fixing part (b) together with the fixing holes (b11, b12, b13). The fixing part (b) may include all of the scales (b10) in addition to the fixing holes (b11, b12, b13) and the fixing pin (b20). Each fixing hole of the fixing part (b) may be formed by denting holes at equal intervals (regular intervals) along the scale b10.

Find out how to fix it. When one of the fixing holes b11 of the adjusting pipe part 120 coincides with one of the fixing holes b12 of the air pipe part 130 (located correspondingly), the two fixing holes are simultaneously connected to the fixing pin b20. It is inserted and fixed, and if any one of the fixing holes (b11) of the control pipe part 120 coincides with the other one of the fixing holes (b13) of the charge pipe part 110, the two fixing holes are connected to another fixing pin (b20). ) and fix it.

Regarding the spacing between the fixing holes (b11) of the adjusting pipe part 120, the spacing between the fixing holes (b12) of the air pipe part 130, the spacing between the fixing holes (b13) of the charge pipe part 110 Each of these may be arranged and configured differently. In FIG. 2 , the distance d1 between the fixing holes b11 of the control pipe part 120 is greater than the distance d2 between the fixing holes b13 of the loading and unloading pipe part 110 . That is, the distance d2 between the fixing holes b13 of the charge pipe part 110 is smaller than the distance d1 between the fixing holes b11 of the control pipe part 120. Through this, when adjusting the length, first, select one of the fixing holes (b11) of the adjusting pipe part 120 to determine the approximate length size, and then, one of the fixing holes (b13) of the charge pipe part 110, the air pipe part ( By selecting one of the fixing holes b12 of 130), small (fine, fine) length adjustment can be performed. For example, in the case of the charge pipe part 110, one of the fixing hole (b13a) or the fixing hole (b13b) can be selected, and in the case of the air pipe part 130, one of the fixing hole (b12a) or the fixing hole (b12b) can be fine-tuned by selecting As a result, the size of the spacing between the fixing holes b11 of the control pipe part 120 (large spacing) and the size of the spacing between the fixing holes b13 of the charge pipe part 110/the fixing holes b12 of the air pipe part 130 (fine spacing) ), the overall length (size) adjustment can be adopted.

4 is a diagram illustrating another implementation. When the minimum size of the space of the air gap of the air layer is determined and expansion is required therefrom, the control pipe blocking part 122a provided in the control pipe part 120 is not the end but about the middle of the body length of the control pipe part 120. It may be provided so that it is arranged at the top and used as an air gap as much as a minimum space. In the example of the drawing, along the length of the control pipe part 120, it is placed about 2/3 from the other end 122 of the control pipe part 120, that is, about 1/3 from one end 121 of the control pipe part 120 there is.

In Figure 5, the entire procedure for performing blasting is described. A preliminary preparation step of establishing a plan by specifying the size, amount of explosives, and air gap space size of the blasting branch pipe 100 according to the blasting site, and designating the depth and arrangement (placement, number) of blasting holes; a blast hole drilling step of drilling a hole at the determined depth and location; A blasting branch tube inserting step of inserting and stacking the blasting branch pipe 100 into the drilled blasting hole; An explosives insertion step of inserting an explosives with a detonator connected to the inside of the blasting branch tube 100 or into the blasting hole; A coloring step of finishing the remaining space of the blasting hole (top opening) with a member such as sand or stone or a pre-prepared coloring material so that the inside of the hole is sealed after the blasting branch tube 100 is inserted; A blasting step of detonating a detonator with a blaster from the outside to perform blasting for rock crushing; A post-processing step of treating the debris after blasting:

Here, the preliminary preparation step may include a preparation step of the paper pipe 100 for blasting in which the size of {whole or each part} of the paper pipe 100 for blasting is determined corresponding to the size (diameter, depth, etc.) of the blasting hole. At this time, the size of the diameter of the branch pipe 100 for blasting is provided (manufactured) smaller than the diameter of the blasting hole, so that it can be prepared for smooth insertion. In addition, since the length of the branch pipe 100 for blasting is approximately calculated and derived arithmetically, such as division, depending on how many branch tubes 100 for blasting are to be inserted (inserted) with respect to the depth of the blasting hole, manufacturing can be performed accordingly. When the amount of explosives to be used and the size of the air gap are determined in the preliminary preparation step, the size of the charge pipe to be loaded with explosives and the size of the air pipe to form the air gap are determined in the preparation step of the branch pipe 100 for blasting. The control tube unit 120 and the air tube unit 130 can be moved in the mutually longitudinal direction, and the size (amount, volume) of the charge or air to be filled can be selected while creating the required space size.

scale (b10); terms and conditions (a10); air pipe 20; Air pipe part 130; an air pipe blocking unit (132a); Control tube unit 120; Control pipe blocking unit (122a); The charge tube unit 110; A tube blocking unit (111a);

Claims (1)

A tube-shaped tube-shaped tube portion 110 having a length and an accommodation space therein, a tube-shaped control tube portion 120 having a length and an accommodation space therein, and a tube-shape having a length and an accommodation space therein. Including the air pipe portion 130 of,
In the charge pipe part 110, the inner diameter of the charge pipe part 110 corresponds to the outer diameter of the control pipe part 120, and the charge pipe blocking part 111a is provided at one end 111 of the charge pipe part 110, ,
In the control pipe part 120, the outer diameter of the control pipe part 120 corresponds to the inner diameter of the charge pipe part 110 and the inner diameter of the air pipe part 130, and the control pipe blocking part is at the other end 122 of the control pipe part 120. (122a),
In the air pipe part 130, the inner diameter of the air pipe part 130 corresponds to the outer diameter of the adjusting pipe part 120, and the other end 132 of the air pipe part 130 is provided with an air pipe blocking part 132a,
One end 121 of the control pipe part 120 is fitted to the other end 112 of the charge pipe part 110, and the other end 122 of the control pipe part 120 is fitted into one end 131 of the air pipe part 130 ,
The common space between the charge pipe part 110 and the control pipe part 120 is provided as a charge pipe, and the space between the other end 122 of the control pipe part 120 and the other end 132 of the air pipe part 130 is provided as an air pipe. become,
The charge tube 110 and the control tube 120 move in the mutual longitudinal direction to adjust the size of the charge tube, and the control tube 120 and the air tube 130 move in the mutual longitudinal direction to adjust the size of the air tube , In the blasting tube for controlling the filling of explosives, including a fixing part (b),
The fixing part (b) includes a fixing pin (b20) having a plurality of drilled fixing holes (b11, b12, b13) and a length,
The fixing holes b11, b12, and b13 include the fixing hole b11 of the control pipe part 120, the fixing hole b12 of the air pipe part 130, and the fixing hole b13 of the charge pipe part 110, respectively. The fixing holes (b11, b12, b13) are formed by digging holes at intervals,
In the fixing method, when one of the fixing holes (b12) of the air pipe part 130 coincides with any one of the fixing holes (b11) of the adjusting pipe part 120, the two fixing holes are simultaneously inserted into the fixing pins (b20) and fixed. , If any one of the fixing holes (b13) of the charge pipe part 110 coincides with any other of the fixing holes (b11) of the adjusting pipe part 120, the two fixing holes are simultaneously inserted into and fixed with different fixing pins (b20),
The scale b10 is designed along the length of the control tube unit 120 to accurately measure the contents, and the length of the tube unit 110 is coupled to one end of the control tube unit 120 based on the scale b10. Provided to adjust the size of the explosives to be filled in the charge tube (a10) while checking the length to be fitted and coupled,
A blasting tube for controlling the filling of explosives, characterized in that.

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