A shaped charge tube smooth blasting tool and construction process

Abstract

The present application relates to the technical field of tunnel blasting, in particular to a kind of energy-gathering tube smooth blasting tool and construction process.The tool includes tool main body, and the tool main body includes installation strip;Explosive roll is equipped at the side wall of installation strip;Explosive roll includes sleeve, and sleeve inside is equipped with energy-gathering tube;The one end of energy-gathering tube that extends sleeve is equipped with energy-gathering cover;Energy-gathering tube side wall is equipped with strip-shaped hole;The distance between the side wall of both ends of strip-shaped hole gradually increases from the one end of energy-gathering tube close to energy-gathering cover to the other end of energy-gathering tube.The process includes S1, mark installation hole position;S2, drill installation hole;S3, energy-gathering tube assembly;S4, middle explosive roll production;S5, bottom explosive roll production;S6, explosive roll installation;S7, hole drilling;S8, connection, detonation;For the defects in the prior art, the present application can solve the problem that the amount of powder is reduced after the energy-gathering tube is loaded into the emulsified explosive shell, and the explosion power of emulsified explosive can be improved under the condition that the amount of powder is not convenient.

Description

Technical Field

[0001] This invention relates to the field of tunnel blasting technology, and more specifically, to a shaped charge tube smooth blasting tool and construction process. Background Technology

[0002] Explosives are commonly used in tunnel construction to blast rocks and assist workers in tunnel excavation. Before placing the explosives, workers drill holes in the rock surface and then place the explosives into the holes. Currently, the most common explosives used in tunnels are emulsion explosives, which consist of an outer shell containing gunpowder. To increase the explosive power and control the direction of energy transmission after the explosion, workers usually cut open the emulsion explosives and insert shaped charge tubes inside.

[0003] Because the shaped charge tube has a certain volume, when the worker inserts it into the outer shell, the tube occupies a certain space, which reduces the internal space of the outer shell and the amount of gunpowder filled. To solve the above problem, the worker can only choose a larger outer shell. However, after the volume of the emulsion explosive outer shell increases, the depth and diameter of the installation hole also need to be increased when the worker drills the installation hole. This increases the worker's workload and reduces the worker's drilling efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a shaped charge tube smooth blasting fixture and construction process. It solves the problem of reduced propellant loading after inserting a shaped charge tube into the outer shell of emulsion explosives, thus increasing the detonation power of emulsion explosives even when propellant usage is limited.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A shaped charge tube blasting fixture includes a fixture body, which includes an installation strip. Multiple explosive rolls are spaced apart along the length of the installation strip on the sidewall of the installation strip. Each explosive roll includes a sleeve for loading explosives, and a shaped charge tube extends out of the sleeve at one end. A shaped charge cover is provided at the end of the shaped charge tube extending out of the sleeve for sealing the shaped charge tube. A strip-shaped hole is provided on the sidewall of the shaped charge tube along its length. The distance between the sidewalls of the two ends of the strip-shaped hole gradually increases from the end of the shaped charge tube near the shaped charge cover to the other end of the shaped charge tube.

[0007] In this invention, when workers install the explosive cartridge, they first pour the gunpowder into the sleeve, then insert the shaped charge tube into the sleeve, allowing the gunpowder in the sleeve to enter the shaped charge tube. Once the gunpowder overflows from the strip hole, the insertion of the shaped charge tube is stopped. Workers can determine that the shaped charge tube is full by observing the gunpowder overflowing from the strip hole. This prevents workers from not being able to determine the degree of compression of the gunpowder in the shaped charge tube during the insertion of the shaped charge tube into the sleeve, which could lead to excessive pressure on the gunpowder and cause an explosion.

[0008] As the shaped charge tube extends into the sleeve, the diameter of the slotted hole on the shaped charge tube will become smaller and smaller, thereby preventing gunpowder leakage.

[0009] After the workers insert the shaped charge tube into the sleeve, the gunpowder will enter the shaped charge tube, and one end of the shaped charge tube will extend into the sleeve to prevent the internal space of the sleeve from shrinking and preventing the gunpowder from being loaded.

[0010] Preferably, the inner sidewall of the energy-concentrating tube is provided with two hollow columns arranged along the length of the energy-concentrating tube; the cross-sectional shape of the hollow columns is triangular.

[0011] In this invention, after the gunpowder explodes, the explosive energy near the hollow column converges towards the axis of the hollow column, forming a high-density, high-speed, and high-pressure gas jet, thereby breaking up the rock.

[0012] Preferably, the energy-concentrating tube has a plane along the length of the energy-concentrating tube on the outer wall near the hollow column.

[0013] In this invention, when the operator inserts the energy-concentrating tube into the sleeve, they can squeeze the flat surface with their fingers to reduce the opening diameter of the energy-concentrating tube, making it easier for the operator to insert the energy-concentrating tube into the sleeve.

[0014] Preferably, the end of the energy-concentrating tube away from the energy-concentrating cover is provided with a clamping foot located on a plane.

[0015] In this invention, after the operator inserts the energy-concentrating tube into the sleeve, the locking pin will engage with the inner wall of the sleeve, thereby preventing the energy-concentrating tube from detaching from the sleeve.

[0016] Preferably, the end of the clamp away from the energy-concentrating cover has an inclined surface.

[0017] In this invention, as the energy-concentrating tube enters the sleeve from the sleeve opening, the inclined surface slides along the inner wall of the sleeve, making it convenient for workers to insert the energy-concentrating tube into the sleeve.

[0018] Preferably, the energy-concentrating shield is cone-shaped.

[0019] In this invention, after the gunpowder explodes, the energy of the explosion is concentrated by the energy-concentrating shield, which then concentrates the energy along the axial direction of the energy-concentrating tube, thereby breaking up the rocks in the tunnel extension direction.

[0020] As a preferred option, bamboo strips are used for the installation.

[0021] In this invention, bamboo strips are commonly found on construction sites, making it convenient for workers to obtain materials, and the cost of using bamboo strips is relatively low.

[0022] As a preferred method, the explosive rolls are fixed to the bamboo strips with tape.

[0023] This invention facilitates the installation and removal of explosive rolls on bamboo strips by workers.

[0024] Preferably, the end of the strip-shaped hole near the energy-concentrating cover is sealed, forming an installation area for the energy-concentrating cover to extend into together with the inner wall of the energy-concentrating tube.

[0025] In this invention, workers embed the energy-concentrating cover into the installation area on the energy-concentrating tube, and the inner wall of the energy-concentrating tube presses against the outer wall of the energy-concentrating cover to prevent the energy-concentrating cover from falling off.

[0026] This invention provides a smooth blasting construction process for shaped charge tubes, comprising the following steps:

[0027] S1. Mark the location of the mounting holes;

[0028] According to the blueprints, the workers marked the locations of the holes to be drilled on the tunnel face;

[0029] S2. Drill the mounting holes;

[0030] Workers used a drilling rig to drill installation holes at the marked locations on the working face;

[0031] S3, Concentrating tube assembly;

[0032] The staff will embed the energy-concentrating cover into the installation area on the energy-concentrating tube, so that the energy-concentrating tube and the energy-concentrating cover form a whole energy-concentrating tube cover;

[0033] S4, Central Explosive Roll Production;

[0034] Workers load gunpowder into the sleeve, and then insert the shaped charge tube cover into the sleeve through the opening until explosives overflow from the strip hole on the side wall of the shaped charge tube.

[0035] S5, Preparation of bottom explosive rolls;

[0036] The staff cut off one end of a section of emulsion explosive and then inserted the shaped charge tube into the emulsion explosive until explosive overflowed from the strip hole on the side wall of the shaped charge tube.

[0037] S6. Installation of explosive cartridges;

[0038] Tie the bottom explosive roll to one end of the mounting strip with tape, then tie the middle explosive rolls to the mounting strip one by one with tape, keeping the interval between the middle explosive rolls 50 cm; finally tie half of the emulsion explosive to the other end of the mounting strip; and make sure that the shaped charge tube end on the bottom explosive roll and the middle explosive roll faces the orifice.

[0039] S7, Install holes;

[0040] Insert the bundled explosive rolls, along with the mounting strips and the digital electronic detonator busbar, into the mounting hole. After inserting the explosive rolls into the mounting hole, adjust the position of the strip holes on the shaped charge tube so that the strip holes face the center of the tunnel outline.

[0041] S8, connection, detonation;

[0042] Connect the digital electronic detonator busbar to the detonation wire at each installation hole, and then detonate using the detonator.

[0043] In this embodiment, a shaped charge tube is used to transmit the main blasting energy of the mounting hole in the direction normal to the tunnel design profile, reducing the damage to the surrounding rock and improving the blasting effect. The strip-shaped holes on the shaped charge tube are installed facing the tunnel center, effectively cutting the rock and resulting in a smoother blasting profile. With the same blasting energy, the spacing between the mounting holes can be appropriately increased, reducing the number of boreholes and effectively lowering tunnel construction time and blasting costs. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the tooling body in Example 1.

[0045] Figure 2 This is a schematic diagram of the explosive roll in Example 1.

[0046] Figure 3 This is a schematic diagram of the focusing tube in Example 1.

[0047] Figure 4 This is a schematic diagram of the locking pin in Example 1.

[0048] Figure 5 This is a schematic diagram of the energy-concentrating shield in Example 1.

[0049] Figure 6 This is a cross-sectional view of the focusing tube in Example 1.

[0050] Figure 7 This is a schematic diagram of the installation area in Example 1. Detailed Implementation

[0051] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0052] Example 1

[0053] like Figure 1-7 As shown, this embodiment provides a shaped charge tube smooth blasting fixture, which includes a fixture body 100, the fixture body 100 including an installation strip 110; a plurality of explosive rolls 120 are provided on the side wall of the installation strip 110 at intervals along the length direction of the installation strip 110; the explosive roll 120 includes a sleeve 210 for filling gunpowder, and a shaped charge tube 220 with one end extending out of the sleeve 210 is provided inside the sleeve 210; a shaped charge cover 230 for sealing the shaped charge tube 220 is provided at the end of the shaped charge tube 220 extending out of the sleeve 210; a strip-shaped hole 320 is provided on the side wall of the shaped charge tube 220 along the length direction of the shaped charge tube 220; the distance between the two side walls of the strip hole 320 gradually increases from the end of the shaped charge tube 220 near the shaped charge cover 230 to the other end of the shaped charge tube 220.

[0054] In this embodiment, when the operator installs the explosive cartridge 120, the gunpowder is first poured into the sleeve 210, and then the shaped charge tube 220 is inserted into the sleeve 210, so that the gunpowder in the sleeve 210 enters the shaped charge tube 220. After the gunpowder overflows from the strip hole 320, the insertion of the shaped charge tube 220 is stopped. The operator can determine that the shaped charge tube 220 is full by observing the gunpowder overflowing from the strip hole 320. This prevents the operator from not being able to know the degree of compression of the gunpowder in the shaped charge tube 220 during the process of inserting the shaped charge tube 220 into the sleeve 210, which could lead to excessive compression of the gunpowder and cause an explosion.

[0055] As the shaped charge tube 220 extends into the sleeve 210, the diameter of the strip hole 320 on the shaped charge tube 220 will become smaller and smaller, thereby preventing gunpowder leakage.

[0056] After the worker inserts the shaped charge tube 220 into the sleeve 210, the gunpowder will enter the shaped charge tube 220, and one end of the shaped charge tube 220 will extend into the sleeve 210 to prevent the internal space of the sleeve 210 from shrinking and the gunpowder from being unable to be loaded.

[0057] In this embodiment, two hollow columns 330 are provided on the inner sidewall of the energy-concentrating tube 220 along the length of the energy-concentrating tube 220; the cross-sectional shape of the hollow column 330 is triangular.

[0058] In this embodiment, after the gunpowder explodes, the explosive energy near the hollow column 330 will converge towards the axis of the hollow column 330, forming a high-density, high-speed, and high-pressure gas jet, thereby breaking the rock.

[0059] In this embodiment, the energy-concentrating tube 220 is provided with a plane 310 along the length direction of the energy-concentrating tube 220 near the outer wall of the hollow column 330.

[0060] In this embodiment, when the operator inserts the energy-concentrating tube 220 into the sleeve 210, the operator can squeeze the flat surface 310 with their fingers to reduce the opening diameter of the energy-concentrating tube 220, making it easier for the operator to insert the energy-concentrating tube 220 into the sleeve 210.

[0061] In this embodiment, the end of the energy-concentrating tube 220 away from the energy-concentrating cover 230 is provided with a locking foot 410 located on the plane 310.

[0062] In this embodiment, after the worker inserts the energy-concentrating tube 220 into the sleeve 210, the locking foot 410 will lock into the inner wall of the sleeve 210, thereby preventing the energy-concentrating tube 220 from detaching from the sleeve 210.

[0063] In this embodiment, the end of the clamping foot 410 away from the energy-concentrating cover 230 is provided with an inclined surface 420.

[0064] In this embodiment, during the process of the energy-concentrating tube 220 entering the sleeve 210 from the opening of the sleeve 210, the inclined surface 420 slides along the inner side wall of the sleeve 210, thereby facilitating the staff to insert the energy-concentrating tube 220 into the sleeve 210.

[0065] In this embodiment, the energy-concentrating shield 230 is cone-shaped.

[0066] In this embodiment, after the gunpowder explodes, the energy of the explosion is concentrated by the energy-concentrating shield 230 and directed along the axial direction of the energy-concentrating tube 220, thereby breaking the rocks in the tunnel extension direction.

[0067] In this embodiment, the mounting strip 110 is made of bamboo.

[0068] In this embodiment, bamboo strips are commonly found on construction sites, making it convenient for workers to obtain materials, and the cost of using bamboo strips is relatively low.

[0069] In this embodiment, the explosive roll 120 is fixed to the bamboo strip with tape.

[0070] This embodiment facilitates the installation and removal of the explosive roll 120 on the bamboo strip by the staff.

[0071] In this embodiment, the end of the strip-shaped hole 320 near the energy-concentrating cover 230 is blocked, and together with the inner wall of the energy-concentrating tube 220, it forms the installation section 710 into which the energy-concentrating cover 230 extends.

[0072] In this embodiment, the staff embeds the energy-concentrating cover 230 into the installation section 710 on the energy-concentrating tube 220, and the inner side wall of the energy-concentrating tube 220 abuts against the outer side wall of the energy-concentrating cover 230 to prevent the energy-concentrating cover 230 from falling off.

[0073] This embodiment provides a smooth blasting construction process for shaped charge tubes, including the following steps.

[0074] S1. Mark the location of the mounting holes;

[0075] According to the blueprints, the workers marked the locations of the holes to be drilled on the tunnel face;

[0076] S2. Drill the mounting holes;

[0077] Workers used a drilling rig to drill installation holes at the marked locations on the working face;

[0078] S3, Concentrating tube assembly;

[0079] The staff embedded the energy-concentrating cover 230 into the installation section 710 on the energy-concentrating tube 220, so that the energy-concentrating tube 220 and the energy-concentrating cover 230 form an integral energy-concentrating tube cover;

[0080] S4, Central Explosive Roll Production;

[0081] Workers loaded gunpowder into sleeve 210, and then inserted the shaped charge tube cover into sleeve 210 along the opening of sleeve 210 until explosives overflowed from the strip hole 320 on the side wall of shaped charge tube 220.

[0082] S5, Preparation of bottom explosive rolls;

[0083] The staff cut off one end of a section of emulsion explosive and then inserted the shaped charge tube cover into the emulsion explosive until explosive overflowed from the strip hole 320 on the side wall of the shaped charge tube 220.

[0084] S6. Installation of explosive cartridges;

[0085] The bottom explosive roll is tied to one end of the mounting strip 110 with tape. Then, the middle explosive rolls are tied to the mounting strip 110 one by one with tape, keeping the interval between the middle explosive rolls 50 cm. Finally, half of the emulsion explosive is tied to the other end of the mounting strip 110. The shaped charge tubes on the bottom and middle explosive rolls are oriented towards the orifice.

[0086] S7, Install holes;

[0087] Insert the bundled explosive roll, along with the installation strip 110 and the digital electronic detonator busbar, into the installation hole. After the explosive roll is inserted into the installation hole, adjust the position of the strip hole 320 on the shaped charge tube 220 so that the strip hole 320 faces the center of the tunnel outline.

[0088] S8, connection, detonation;

[0089] Connect the digital electronic detonator busbar to the detonation wire at each installation hole, and then detonate using the detonator.

[0090] In this embodiment, a shaped charge tube is used to transmit the main blasting energy of the mounting hole in the direction normal to the tunnel design profile, reducing the damage to the surrounding rock and improving the blasting effect. The strip-shaped holes on the shaped charge tube are installed facing the tunnel center, effectively cutting the rock and resulting in a smoother blasting profile. With the same blasting energy, the spacing between the mounting holes can be appropriately increased, reducing the number of boreholes and effectively lowering tunnel construction time and blasting costs.

[0091] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0092] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A smooth-surface blasting fixture for a shaped charge tube, characterized in that: The fixture includes a tooling body (100), which includes an installation strip (110). Multiple explosive rolls (120) are spaced apart along the length of the installation strip (110) on the sidewall of the installation strip (110). Each explosive roll (120) includes a sleeve (210) for loading explosives. A shaped charge tube (220) with one end extending out of the sleeve (210) is located inside the sleeve (210). A shaped charge cover (230) for sealing the shaped charge tube (220) is located at one end extending out of the sleeve (210). A strip-shaped hole (320) is provided along the length of the shaped charge tube (220) on the sidewall of the shaped charge tube (220). The distance between the two sidewalls of the strip-shaped hole (320) gradually increases from one end of the shaped charge tube (220) near the shaped charge cover (230) to the other end of the shaped charge tube (220). The end of the strip hole (320) near the energy-concentrating cover (230) is sealed, and together with the inner wall of the energy-concentrating tube (220), it forms an installation area (710) for the energy-concentrating cover (230) to extend into. When installing the explosive roll (120), the gunpowder is poured into the sleeve (210), and then the shaped charge tube (220) is inserted into the sleeve (210) so that the gunpowder in the sleeve (210) enters the shaped charge tube (220). After the gunpowder overflows from the strip hole (320), the insertion of the shaped charge tube (220) is stopped. By observing the gunpowder overflowing from the strip hole (320), it can be seen that the shaped charge tube (220) is filled with gunpowder.

2. The shaped charge tube smooth surface blasting tool according to claim 1, characterized in that: Two hollow columns (330) are provided on the inner side wall of the energy-concentrating tube (220) along the length of the energy-concentrating tube (220); the cross-sectional shape of the hollow column (330) is triangular.

3. The shaped charge tube smooth surface blasting tool according to claim 2, characterized in that: The energy-concentrating tube (220) has a plane (310) on the outer wall near the hollow column (330) along the length of the energy-concentrating tube (220).

4. The shaped charge tube smooth surface blasting tool according to claim 3, characterized in that: The end of the energy-concentrating tube (220) away from the energy-concentrating cover (230) is provided with a clamp (410) located on the plane (310).

5. The shaped charge tube smooth surface blasting tool according to claim 4, characterized in that: The end of the clamp (410) away from the energy-concentrating cover (230) has an inclined surface (420).

6. The shaped charge tube smooth surface blasting tool according to claim 1, characterized in that: The energy-concentrating shield (230) is cone-shaped.

7. The shaped charge tube smooth surface blasting tool according to claim 1, characterized in that: The installation strip (110) is made of bamboo strips.

8. The shaped charge tube smooth surface blasting tool according to claim 7, characterized in that: The explosive roll (120) is fixed to the mounting strip with tape.

9. A smooth-surface blasting construction process for shaped charge tubes, comprising the smooth-surface blasting fixture for shaped charge tubes as described in any one of claims 1-8, comprising the following steps: S1. Mark the location of the mounting holes; According to the blueprints, the workers marked the locations of the holes to be drilled on the tunnel face; S2. Drill the mounting holes; Workers used a drilling rig to drill installation holes at the marked locations on the working face; S3, Concentrating tube assembly; The staff will embed the energy-concentrating cover (230) into the installation section (710) on the energy-concentrating tube (220), so that the energy-concentrating tube (220) and the energy-concentrating cover (230) form an integral energy-concentrating tube cover; S4, Central Explosive Roll Production; Workers load gunpowder into the sleeve (210), and then insert the shaped charge tube cover into the sleeve (210) along the opening of the sleeve (210) until explosives overflow from the strip hole (320) on the side wall of the shaped charge tube (220). S5, Preparation of bottom explosive rolls; The staff cut off one end of a section of emulsion explosive and then inserted the shaped charge tube cover into the emulsion explosive until explosive overflowed from the strip hole (320) on the side wall of the shaped charge tube (220). S6. Installation of explosive cartridges; The bottom explosive roll is tied to one end of the mounting strip (110) with tape. Then, the middle explosive rolls are tied to the mounting strip (110) one by one with tape, with the interval between the middle explosive rolls maintained at 50 cm. Finally, half of the emulsion explosive is tied to the other end of the mounting strip (110). The shaped charge tubes on the bottom and middle explosive rolls are oriented towards the orifice. S7, Install holes; Insert the bundled explosive roll, along with the installation strip (110) and the digital electronic detonator busbar, into the installation hole. After the explosive roll is inserted into the installation hole, adjust the position of the strip hole (320) on the shaped charge tube (220) so that the strip hole (320) faces the center of the tunnel outline. S8, connection, detonation; Connect the digital electronic detonator busbar of each mounting hole to the detonation wire, and then detonate using the detonator.

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