A roof precise directional presplitting blasting method and a charging structure

Abstract

The present application relates to the technical field of ore body supporting equipment, and more particularly to a roof precise directional pre-splitting blasting method and a charging structure. The technical scheme comprises a soil layer body, a shaped charge tube body, a connecting ring, a piston rod body and a connecting pipe. A blast hole is formed in the soil layer body. The blast hole is provided with the shaped charge tube bodies distributed in equidistance and parallel. The connecting pipes are arranged between the shaped charge tube bodies. The connecting pipes are provided with the connecting rings. The connecting ring, the sleeve pipe and the air bag body are arranged to facilitate the installation of the shaped charge tube body, ensure that the angle of the shaped charge tube body in the blast hole meets the needs and improve the installation efficiency of the shaped charge tube body.

Description

Technical Field

[0001] This invention relates to the field of ore body support equipment technology, specifically to a method for precise directional pre-splitting blasting of the roof and a charging structure. Background Technology

[0002] Currently, wide coal pillars are mainly used for roadway protection in my country's coal mines. The width of these pillars is generally 20-30 meters, and in some mines it can reach 40-50 meters or even greater as coal thickness and mining depth increase. This results in significant coal resource losses. Statistics show that coal pillar loss accounts for the largest share of coal resource waste in my country's mines, representing approximately 10-30% of the total geological reserves. Wide coal pillars not only lead to low coal extraction rates, but also cause increasingly prominent problems such as large deformation of the surrounding rock, rock bursts, and coal and gas outbursts due to stress concentration. Lateral roof treatment in the goaf and coal pillar decompression are fundamental measures to weaken the stress source. This requires the use of pre-splitting blasting methods. Based on the principle of deep-hole pre-splitting blasting, the explosive stress waves, shock waves, and high-temperature, high-pressure explosive gases generated during the explosion act on the roof rock mass, causing penetrating fractures. Essentially, this alters the structure of the roof strata, thereby achieving roof cutting and decompression.

[0003] Extensive research revealed that a typical example of existing roof blasting devices is a method for controlling the surrounding rock of roadways with small coal pillars during goaf excavation, disclosed in publication number CN103244180B. This method involves arranging blast holes of different angles and depths in the transport roadway during the upper section of the working face. Deep-hole pre-splitting is used to pre-form weak surfaces in a certain area of ​​the basic roof, disrupting the integrity of the basic roof strata. After the working face is mined, the roof pressure causes the suspended length of the basic roof to fracture at a predetermined position, shortening the suspended length of the basic roof lateral to the goaf and reducing the lateral support pressure on the goaf. This, in turn, reduces the pressure on the roadway during goaf excavation with small coal pillars in the lower section, making the roadway easier to maintain.

[0004] Existing blasting devices lack a positioning device for the shaped charge tube during use, relying solely on positioning blocks for fixation. This not only makes it difficult to place the shaped charge tube inside the blast hole, affecting the installation efficiency, but also causes the shaped charge tube to shift in position inside the blast hole due to soil vibration, resulting in a shift in the blasting angle and affecting the shape of the soil layer after blasting. Summary of the Invention

[0005] The purpose of this invention is to provide a method for precise directional pre-splitting blasting of the roof and a charging structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a charge structure for precise directional pre-splitting blasting of the roof, comprising a soil layer body, a shaped charge tube body, a connecting ring, a piston rod body, and a connecting pipe. The soil layer body has blast holes inside, and shaped charge tube bodies are arranged in parallel at equal intervals inside the blast holes. A connecting pipe is arranged between the shaped charge tube bodies, and a connecting ring is arranged on the outer wall of the connecting pipe.

[0007] Preferably, a sleeve is provided at the upper end of the inner wall of the soil layer body, and a circular array of rivets is provided inside the sleeve, with the rivets penetrating the sleeve and located inside the soil layer body. The rivets achieve the purpose of fixing the sleeve and ensuring the positional stability of the sleeve.

[0008] Fixing blocks are installed on both sides of the upper outer wall of the sleeve. A screw is threaded inside the fixing block. A clamp is installed through the outer wall of one end of the sleeve by the screw. The clamp is in contact with the outer wall of the energy-concentrating tube body. The two clamps achieve the purpose of fixing the energy-concentrating tube body.

[0009] Preferably, the outer wall of the connecting ring is equipped with piston rod bodies arranged in a circular array, and a fixing plate is installed on the outer wall of the piston rod bodies at the end opposite to the connecting ring.

[0010] A roller is installed on the outer wall of the fixed plate away from the piston rod body, and the roller contacts the inner wall of the gun hole. The piston rod body can ensure the positional stability of the fixed plate and the roller.

[0011] A spring is provided on one side of the outer wall of the fixing plate, and the fixing plate is elastically connected to the outer wall of one side of the piston rod body through the spring. The elastic force of the spring can push the roller to contact the inner wall of the borehole, and ensure the positional stability of the shaped charge tube body inside the borehole.

[0012] Preferably, an airbag body is provided on one side of the inner wall of the connecting ring, and a circular array of support blocks are fixedly attached to the inner wall of the airbag body. The support blocks are provided with fitting grooves on both sides of the inner wall of the support blocks. By controlling the air pressure inside the airbag body, the support blocks can be moved.

[0013] The outer walls on both sides of the connecting pipe are fitted with fitting blocks, and the fitting blocks are located inside the fitting groove. The fitting groove and the fitting blocks ensure the connection stability between the connecting pipe and the connecting ring.

[0014] The airbag body has connecting tubes inserted into the outer walls of both the upper and lower sides. An air inlet tube is inserted into the outer wall of the connecting tube opposite to the airbag body. The external inflation device inflates the airbag body through the air inlet tube and the connecting tube, thereby adjusting the air pressure inside the airbag body.

[0015] Preferably, energy-concentrating grooves are provided on both sides of the inner wall of the energy-concentrating tube body, and a positioning block is placed on one side of the inner wall of the energy-concentrating tube body. The energy-concentrating grooves can control the convergence direction of the explosive energy.

[0016] The positioning block contains an explosive body, and there is a gap between the explosive body and the shaped charge tube body. The positioning block ensures the positional stability of the explosive body inside the shaped charge tube body.

[0017] The explosive bodies are connected in parallel by detonators and detonating cords, and the detonators are connected to an external detonator.

[0018] A method for precise directional pre-splitting blasting of roof slabs includes the following steps:

[0019] Step 1: The workers fix the casing to the outer wall of the soil layer with rivets, and one side of the casing is stably located inside the blast hole;

[0020] Step 2: The staff removes the cover plate of the shaped charge tube body and places the explosive body with the detonator and detonating cord arranged inside the shaped charge tube body. The explosive body is located inside the positioning block. After the staff installs the cover plate, the staff connects the various shaped charge tube bodies through the connecting pipe.

[0021] Step 3: The staff takes the connecting ring and aligns it with the connecting tube. The external inflation device inflates the airbag body through the air inlet tube and the connecting tube, thereby adjusting the air pressure inside the airbag body, causing the airbag body to expand and the fitting block to be located inside the fitting groove.

[0022] Step 4: The staff manually picks up the shaped charge tube and places it into the casing. Rollers are used to ensure the smooth and stable movement of the shaped charge tube inside the borehole.

[0023] Step 5: After the shaped charge tube body moves to the required depth, the staff manually rotates the shaped charge tube body to ensure that the angle of the shaped charge tube body inside the borehole meets the requirements.

[0024] Step Six: The external inflation device inflates the airbag body through the air inlet pipe and the connecting pipe. By inflating the airbag body, the fitting block is squeezed into the fitting groove, ensuring the connection between the connecting pipe and the connecting ring is stable.

[0025] Step 7: The staff manually rotates the screw, which moves relative to the fixed block until the clamping plate squeezes the shaped charge tube body. The squeezing force achieves the purpose of fixing the shaped charge tube body, ensuring that the angle of the shaped charge tube body inside the blast hole meets the requirements.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting a connecting ring, a sleeve, and an airbag body, the present invention achieves the effect of facilitating the installation of the shaped charge tube body. The operator takes the connecting ring and aligns it with the connecting tube. The external inflation device inflates the airbag body through the air inlet pipe and the connecting pipe, thereby adjusting the internal air pressure and causing the airbag body to expand. This positions the fitting block within the fitting groove. The operator manually takes the shaped charge tube body and places it into the sleeve. Rollers ensure the smooth and stable movement of the shaped charge tube body within the borehole, improving efficiency and stability. The installation efficiency of the shaped charge tube body is improved. After the shaped charge tube body is moved to the required depth, the staff manually rotates the shaped charge tube body to ensure that the angle of the shaped charge tube body inside the blast hole is as required. The external inflation device inflates the airbag body, thereby causing the fitting block to squeeze the fitting groove, ensuring the connection stability between the connecting pipe and the connecting ring. The staff manually rotates the screw, and the screw moves relative to the fixed block until the clamping plate squeezes the shaped charge tube body. The squeezing force achieves the purpose of fixing the shaped charge tube body, ensuring that the angle of the shaped charge tube body inside the blast hole is as required, and ensuring the shape of the soil layer after blasting. Attached Figure Description

[0027] Figure 1 This is a schematic cross-sectional view of the soil layer structure of the present invention;

[0028] Figure 2 This is an enlarged schematic diagram of the sleeve structure of the present invention;

[0029] Figure 3 This is an enlarged schematic diagram of the connecting ring structure of the present invention;

[0030] Figure 4 This is a top-sectional view of the connecting ring structure of the present invention.

[0031] In the diagram: 1. Soil layer body; 11. Blast hole; 12. Casing; 13. Rivet; 14. Fixing block; 15. Screw; 16. Clamping plate; 2. Shaped charge tube body; 21. Connecting pipe; 22. Explosive body; 23. Shaped charge groove; 24. Positioning block; 25. Fitting block; 3. Connecting ring; 31. Airbag body; 32. Connecting pipe; 33. Air inlet pipe; 34. Support block; 35. Fitting groove; 4. Piston rod body; 41. Fixing plate; 42. Spring; 43. Roller. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Please see Figures 1 to 4 The present invention provides two embodiments:

[0036] Example 1: A method for precise directional pre-splitting blasting of the roof and a charging structure, including a soil body 1, a shaped charge tube body 2, a connecting ring 3, a piston rod body 4, and a connecting pipe 21. The soil body 1 has blast holes 11 inside, and shaped charge tube bodies 2 are arranged in parallel at equal intervals inside the blast holes 11. When the shaped charge tube body 2 moves to the required depth, the operator manually rotates the shaped charge tube body 2 to ensure that the angle of the shaped charge tube body 2 inside the blast hole 11 meets the requirements. A connecting pipe 21 is arranged between the shaped charge tube bodies 2, and a connecting ring 3 is arranged on the outer wall of the connecting pipe 21.

[0037] A piston rod body 4 arranged in a circular array is installed on the outer wall of the connecting ring 3, and a fixing plate 41 is installed on the outer wall of the piston rod body 4 away from the connecting ring 3.

[0038] A roller 43 is installed on the outer wall of the fixed plate 41 away from the piston rod body 4, and the inner wall of the gun hole 11 of the roller 43 is in contact with it. The piston rod body 4 can ensure the positional stability of the fixed plate 41 and the roller 43.

[0039] A spring 42 is provided on one side of the outer wall of the fixing plate 41, and the fixing plate 41 is elastically connected to the outer wall of one side of the piston rod body 4 through the spring 42. The elastic force of the spring 42 can push the roller 43 to contact the inner wall of the borehole 11, and ensure the positional stability of the shaped charge tube body 2 inside the borehole 11. The operator manually picks up the shaped charge tube body 2 and puts it into the sleeve 12. The roller 43 ensures the smoothness and stability of the movement of the shaped charge tube body 2 inside the borehole 11.

[0040] An airbag body 31 is provided on one side of the inner wall of the connecting ring 3. A circular array of support blocks 34 are fixed to the inner wall of the airbag body 31. Fitting grooves 35 are provided on both sides of the inner wall of the support blocks 34. By controlling the air pressure inside the airbag body 31, the support blocks 34 can be moved.

[0041] Both sides of the outer wall of the connecting pipe 21 are fitted with fitting blocks 25, and the fitting blocks 25 are located inside the fitting groove 35. The fitting groove 35 and the fitting blocks 25 ensure the connection stability between the connecting pipe 21 and the connecting ring 3.

[0042] The upper and lower outer walls of the airbag body 31 are each fitted with a connecting pipe 32. An air inlet pipe 33 is fitted into the outer wall of the connecting pipe 32 on the side opposite to the airbag body 31. An external inflation device inflates the airbag body 31 through the air inlet pipe 33 and the connecting pipe 32, thereby adjusting the internal air pressure of the airbag body 31. The operator takes the connecting ring 3 and aligns it with the connecting pipe 21. The external inflation device inflates the airbag body 31 through the air inlet pipe 33 and the connecting pipe 32, thereby adjusting the internal air pressure of the airbag body 31, causing the airbag body 31 to expand and the fitting block 25 to be located inside the fitting groove 35.

[0043] Energy focusing grooves 23 are provided on both sides of the inner wall of the energy focusing tube body 2, and a positioning block 24 is placed on one side of the inner wall of the energy focusing tube body 2. The energy focusing grooves 23 can control the direction of energy convergence of the explosion.

[0044] The explosive body 22 is placed inside the positioning block 24. There is a gap between the explosive body 22 and the shaped charge tube body 2. The positioning block 24 ensures the positional stability of the explosive body 22 inside the shaped charge tube body 2.

[0045] The explosive bodies 22 are connected in parallel by detonators and detonating cords, and the detonators are connected to an external detonator. The workers remove the cover plate of the shaped charge tube body 2 and place the explosive bodies 22 with the detonators and detonating cords arranged inside the shaped charge tube body 2. The explosive bodies 22 are located inside the positioning block 24. After the workers install the cover plate, they connect the various shaped charge tube bodies 2 through the connecting pipe 21.

[0046] Example 2: A method for precise directional pre-splitting blasting of the roof and a charging structure, including a soil body 1, a shaped charge tube body 2, a connecting ring 3, a piston rod body 4 and a connecting pipe 21. The soil body 1 has blast holes 11 inside, and shaped charge tube bodies 2 are arranged in parallel at equal intervals inside the blast holes 11. The connecting pipes 21 are arranged between the shaped charge tube bodies 2, and the connecting pipes 21 have connecting rings 3 on their outer walls.

[0047] A sleeve 12 is provided at the upper end of the inner wall of the soil layer body 1. A circular array of rivets 13 is provided inside the sleeve 12. The rivets 13 penetrate the sleeve 12 and are located inside the soil layer body 1. The rivets 13 achieve the purpose of fixing the sleeve 12 and ensure the positional stability of the sleeve 12. The workers fix the sleeve 12 to the outer wall of the soil layer body 1 with the rivets 13, and one side of the sleeve 12 is stably located inside the blast hole 11.

[0048] Fixing blocks 14 are installed on both sides of the upper outer wall of the sleeve 12. The fixing blocks 14 are threaded with screws 15. The screws 15 pass through the outer wall of one end of the sleeve 12 and are fitted with clamps 16. The clamps 16 are in contact with the outer wall of the shaped charge tube body 2. The two clamps 16 achieve the purpose of fixing the shaped charge tube body 2. The operator manually rotates the screws 15, and the screws 15 move relative to each other inside the fixing blocks 14 until the clamps 16 squeeze the shaped charge tube body 2. The squeezing force achieves the purpose of fixing the shaped charge tube body 2, ensuring that the angle of the shaped charge tube body 2 inside the borehole 11 meets the requirements.

[0049] An airbag body 31 is provided on one side of the inner wall of the connecting ring 3. A circular array of support blocks 34 are fixed to the inner wall of the airbag body 31. Fitting grooves 35 are provided on both sides of the inner wall of the support blocks 34. By controlling the air pressure inside the airbag body 31, the support blocks 34 can be moved.

[0050] Both sides of the outer wall of the connecting tube 21 are fitted with fitting blocks 25, and the fitting blocks 25 are located inside the fitting groove 35. The fitting groove 35 and the fitting blocks 25 ensure the connection stability between the connecting tube 21 and the connecting ring 3. The external inflation device inflates the airbag body 31 through the air inlet pipe 33 and the connecting pipe 32. By expanding the airbag body 31, the fitting blocks 25 squeeze the fitting groove 35, thus ensuring the connection stability between the connecting tube 21 and the connecting ring 3.

[0051] The upper and lower outer walls of the airbag body 31 are connected to connecting pipes 32. The outer wall of the connecting pipes 32 opposite to the airbag body 31 is connected to an air inlet pipe 33. The external inflation device inflates the airbag body 31 through the air inlet pipe 33 and the connecting pipe 32, thereby achieving the purpose of adjusting the air pressure inside the airbag body 31.

[0052] Working principle: The operator fixes the sleeve 12 to the outer wall of the soil body 1 with rivets 13, and one side of the sleeve 12 is stably located inside the blast hole 11. The operator removes the cover plate of the shaped charge tube body 2 and places the explosive body 22 with the detonator and detonating cord arranged inside the shaped charge tube body 2. The explosive body 22 is located inside the positioning block 24. After the operator installs the cover plate, the operator connects the various shaped charge tube bodies 2 through the connecting pipe 21. The operator takes the connecting ring 3 and aligns the position of the connecting ring 3 with the connecting pipe 21. The external inflation device inflates the airbag body 31 through the air inlet pipe 33 and the connecting pipe 32 to adjust the air pressure value inside the airbag body 31, thereby inflating the airbag body 31 and placing the fitting block 25 inside the fitting groove 35. The operator manually takes the shaped charge tube body 2 and puts it into the sleeve 12. The roller 43 ensures the smooth and stable movement of the shaped charge tube body 2 inside the blast hole 11.

[0053] Once the shaped charge tube body 2 has moved to the required depth, the operator manually rotates the shaped charge tube body 2 to ensure that the angle of the shaped charge tube body 2 inside the borehole 11 meets the requirements. The external inflation device inflates the airbag body 31 through the air inlet pipe 33 and the connecting pipe 32. By inflating the airbag body 31, the fitting block 25 is pressed against the fitting groove 35, ensuring the connection stability between the connecting pipe 21 and the connecting ring 3. The operator manually rotates the screw 15, which moves relative to the fixing block 14 until the clamping plate 16 presses against the shaped charge tube body 2. The pressing force achieves the purpose of fixing the shaped charge tube body 2, ensuring that the angle of the shaped charge tube body 2 inside the borehole 11 meets the requirements.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A charge structure for precise directional pre-splitting blasting of the roof, comprising a soil layer body (1), a shaped charge tube body (2), a connecting ring (3), a piston rod body (4), and a connecting pipe (21), characterized in that: The soil body (1) has blast holes (11) inside, and equidistant parallel energy-concentrating tube bodies (2) are arranged inside the blast holes (11). A connecting pipe (21) is arranged between the energy-concentrating tube bodies (2), and a connecting ring (3) is arranged on the outer wall of the connecting pipe (21). A sleeve (12) is provided at the upper end of the inner wall of the soil body (1). A circular array of rivets (13) is provided inside the sleeve (12). The rivets (13) penetrate the sleeve (12) and are located inside the soil body (1). The rivets (13) achieve the purpose of fixing the sleeve (12) and ensure the positional stability of the sleeve (12). Fixing blocks (14) are installed on both sides of the upper outer wall of the sleeve (12). The fixing blocks (14) are threaded with screws (15). The screws (15) pass through the outer wall of one end of the sleeve (12) and a clamp (16) is installed. The clamp (16) contacts the outer wall of the energy-concentrating tube body (2). The two clamps (16) achieve the purpose of fixing the energy-concentrating tube body (2). An airbag body (31) is provided on one side of the inner wall of the connecting ring (3). A circular array of support blocks (34) is attached to the inner wall of the airbag body (31). Fitting grooves (35) are provided on both sides of the inner wall of the support blocks (34). The support blocks (34) can be moved by controlling the air pressure inside the airbag body (31). Both sides of the outer wall of the connecting pipe (21) are fitted with fitting blocks (25), and the fitting blocks (25) are located inside the fitting groove (35). The fitting groove (35) and the fitting blocks (25) ensure the connection stability between the connecting pipe (21) and the connecting ring (3). The upper and lower outer walls of the airbag body (31) are each connected to a connecting pipe (32). An air inlet pipe (33) is connected to the outer wall of the connecting pipe (32) away from the airbag body (31). The external inflation device inflates the airbag body (31) through the air inlet pipe (33) and the connecting pipe (32), thereby achieving the purpose of adjusting the air pressure value inside the airbag body (31).

2. The charging structure for precise directional pre-splitting blasting of the roof as described in claim 1, characterized in that: The outer wall of the connecting ring (3) is equipped with piston rod bodies (4) arranged in a circular array, and a fixing plate (41) is installed on the outer wall of the piston rod body (4) away from the connecting ring (3). A roller (43) is installed on the outer wall of the fixed plate (41) away from the piston rod body (4), and the roller (43) is in contact with the inner wall of the borehole (11). The piston rod body (4) can ensure the positional stability of the fixed plate (41) and the roller (43). A spring (42) is provided on one side of the outer wall of the fixing plate (41), and the fixing plate (41) is elastically connected to the outer wall of one side of the piston rod body (4) through the spring (42). The elastic force of the spring (42) can push the roller (43) to contact the inner wall of the borehole (11), and ensure the positional stability of the energy-concentrating tube body (2) inside the borehole (11).

3. The charging structure for precise directional pre-splitting blasting of the roof as described in claim 2, characterized in that: Energy-concentrating grooves (23) are provided on both sides of the inner wall of the energy-concentrating tube body (2), and a positioning block (24) is placed on one side of the inner wall of the energy-concentrating tube body (2). The energy-concentrating grooves (23) can control the convergence direction of the explosion energy. The positioning block (24) contains an explosive body (22), and there is a gap between the explosive body (22) and the shaped charge tube body (2). The positioning block (24) ensures the positional stability of the explosive body (22) inside the shaped charge tube body (2). The explosive bodies (22) are connected in parallel by detonators and detonating cords, and the detonators are connected to an external detonator.

4. A method for precise directional pre-splitting blasting of the roof, based on the charge structure for precise directional pre-splitting blasting of the roof as described in claim 3, characterized in that: Includes the following steps: Step 1: The staff fixes the sleeve (12) to the outer wall of the soil body (1) with rivets (13), and one side of the sleeve (12) is stably located inside the blast hole (11); Step 2: The staff removes the cover plate of the shaped charge tube body (2) and places the explosive body (22) with the detonator and detonating cord arranged inside the shaped charge tube body (2). The explosive body (22) is located inside the positioning block (24). After the staff installs the cover plate, the staff connects each shaped charge tube body (2) through the connecting pipe (21). Step 3: The staff takes the connecting ring (3) and aligns the position of the connecting ring (3) with the connecting tube (21). The external inflation device inflates the airbag body (31) through the air inlet tube (33) and the connecting tube (32), thereby adjusting the air pressure value inside the airbag body (31) and causing the airbag body (31) to expand, so that the fitting block (25) is located inside the fitting groove (35). Step 4: The staff manually took the shaped charge tube body (2) and placed it into the casing (12). The roller (43) ensured the smoothness and stability of the movement of the shaped charge tube body (2) inside the borehole (11). Step 5: After the shaped charge tube body (2) moves to the required depth, the staff manually rotates the shaped charge tube body (2) to ensure that the angle of the shaped charge tube body (2) inside the borehole (11) meets the requirements. Step 6: The external inflation device inflates the airbag body (31) through the air inlet pipe (33) and the connecting pipe (32). By expanding the airbag body (31), the fitting block (25) squeezes the fitting groove (35), ensuring the connection stability between the connecting pipe (21) and the connecting ring (3). Step 7: The staff manually rotates the screw (15), and the screw (15) moves relative to the fixed block (14) until the clamp (16) squeezes the energy-concentrating tube body (2). The squeezing force achieves the purpose of fixing the energy-concentrating tube body (2) and ensures that the angle of the energy-concentrating tube body (2) inside the blast hole (11) meets the requirements.

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