Anti-slip explosive column based on large-elevation-angle blast hole

Abstract

The utility model relates to an anti-slip explosive column based on a large-elevation-angle blast hole, the explosive column is axially inserted into the blast hole matched with the explosive column, the explosive column is composed of a plurality of explosive column bodies which are connected in series, and an anti-slip assembly is arranged at the end of the explosive column; the anti-skid assembly comprises a round backing ring, the round backing ring axially sleeves the top end of the corresponding grain body, through grooves are radially and symmetrically formed in the outer circumferential face of the round backing ring, supporting shafts are transversely and rotatably connected into the through grooves, protruding blocks are axially and fixedly connected to the middles of the supporting shafts in a penetrating mode, fin plates are integrally and vertically connected to the bottom ends of the protruding blocks, and the fin plates are fixedly connected to the bottom ends of the fin plates in a penetrating mode. Torsional springs are axially and symmetrically connected to the end parts of the supporting shaft in a sleeving manner; by means of the anti-skid assembly, the problem that an explosive column in a large-elevation-angle blast hole is prone to sliding backwards is effectively solved, potential damage to the inner wall of the blast hole is remarkably reduced, and therefore the effect and safety of deep hole blasting are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep hole blasting in coal mines, in particular to an anti-slipping explosive column based on a blast hole with a large elevation angle. Background Art

[0002] Explosive column (water gel column or emulsion column) is a columnar explosive structure formed by loading water gel explosive or emulsion explosive into a specific shell. It is suitable for non-falling coal (rock) deep hole pre-splitting controlled blasting and other special medium and deep hole blasting in the solid coal (rock) body to increase the cracks in the coal (rock) body in coal mines. Such as deep hole blasting pressure relief and permeability enhancement in high-gas and low-permeability coal seams, weakening of hard roof (bottom plate) and ultra-thick coal and rock layers, shale gas mining, surface tunnel construction and other engineering blasting.

[0003] The existing deep hole blasting technology in coal mines is to use drilling equipment to drill deeper blastholes on the mine roof, then fill the blastholes with water gel explosives or emulsion explosives, and detonate the explosives remotely through a detonator, thereby causing cracks and fractures in the roof to achieve the purpose of roof blasting.

[0004] Since most of the blastholes that require top caving are large-angle blastholes, the explosive column will slide backwards due to its own weight, which greatly increases the difficulty of loading. In the prior art, iron wire is wrapped around the end of the explosive column to form anti-slip wings. However, when the explosive column is inserted into the blasthole manually or by machine, this anti-slip wing is likely to damage the inner wall of the blasthole, reducing the stability of the explosive column in the blasthole, thereby affecting the deep hole blasting effect. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides an anti-slip explosive column based on a large elevation angle blasthole, and the specific technical scheme is as follows:

[0006] The utility model provides an anti-slip type explosive charge column based on a large elevation angle blast hole, wherein the explosive charge column is axially inserted into a blast hole adapted thereto, the explosive charge column is composed of a plurality of charge column bodies connected in series, and an anti-slip component is arranged at the end of the explosive charge column;

[0007] The anti-skid assembly comprises a circular washer, which is axially sleeved on the top of the corresponding medicine column, and the outer circumferential surface of the circular washer is respectively provided with radially symmetrical through grooves, a support shaft is laterally rotatably connected in the through groove, a convex block is axially fixedly penetrated in the middle of the support shaft, a fin plate is integrally and vertically connected to the bottom end of the convex block, and torsion springs are respectively axially symmetrically sleeved on the ends of the support shaft;

[0008] The fin plate is divided into a natural state and a compressed state. When in the natural state, the fin plate is supported by the torsion spring and expanded outward, and its bottom end penetrates the inner wall of the blast hole; when in the compressed state, the fin plate is subjected to radial pressure from the inner wall of the blast hole, causing the torsion spring to be twisted and deformed, and the fin plate rotates inward around the supporting axis.

[0009] As a preferred technical solution of the utility model, the powder column includes a powder charging tube, and the upper and lower tube openings of the powder charging tube are axially sealed with an upper plug and a lower plug respectively.

[0010] As an optimal technical solution of the utility model, the upper plug is a short tubular structure with a closed bottom end, and its inner wall is provided with an internal thread, and a limiting flange is integrally provided along the circumference of its top edge, and the outer diameter of the limiting flange is the same as the outer diameter of the charging tube; the upper plug is interference fit with the upper tube opening of the charging tube.

[0011] As a preferred technical solution of the utility model, the lower plug includes a plugging column that is interference fit with the lower tube mouth of the charging tube, the bottom of the plugging column is circumferentially integrated with an annular flange, the outer diameter of the annular flange is the same as the outer diameter of the charging tube, and the bottom end of the plugging column is axially integrated with a threaded column, and the threaded column is threadedly matched with the upper plug corresponding to the charge column body below it.

[0012] As a preferred technical solution of the utility model, the circular gasket is axially crimped by the upper plug corresponding to the charge column, the outer diameter of the circular gasket is the same as the outer diameter of the charge tube, the through groove is docked with the corresponding receiving groove vertically opened at the top of the charge tube, and the receiving groove is adapted to the size of the fin plate.

[0013] As a preferred technical solution of the utility model, a restraining assembly is also provided at the end of the explosive column, and the restraining assembly is used to fold or unfold the fin plate of the anti-slip assembly;

[0014] The positioning assembly comprises a cross plate mounted on the top surface of the corresponding upper plug, the outer end of the cross plate is vertically connected to a straight plate downward, the bottom end of the straight plate is vertically connected to an arc-shaped baffle, the inner arc surface of the arc-shaped baffle is slidably attached to the outer peripheral surface of the corresponding charge tube; four positioning anchor spikes are vertically arranged at equal intervals in the circumferential direction at the center of the top surface of the cross plate;

[0015] When the fin plate is in a folded state, two radially opposite arc-shaped baffles in the tie-position assembly respectively fold and press the corresponding fin plate into the accommodating groove;

[0016] When the fin plate is in the expanded state, the positioning anchor of the tie assembly is axially penetrated into the top surface of the blast hole by external force, and the explosive column rotates circumferentially, causing the arc baffle to shift, so that the fin plate is expanded to the outside of the accommodating groove through the reset torque of the corresponding torsion spring.

[0017] As a preferred technical solution of the utility model, the bottom of the fin plate is configured as a double-sided wedge-shaped structure.

[0018] As a preferred technical solution of the utility model, the positioning anchor is a plate-like structure with a sharpened top.

[0019] The beneficial effects of the utility model are:

[0020] The utility model effectively solves the problem of easy backward sliding of explosive column in large elevation angle blasthole by setting up anti-skid components, increases the stability of explosive column in blasthole, and significantly reduces the potential damage to the inner wall of blasthole, thereby improving the effect and safety of deep hole blasting;

[0021] The core of the anti-skid assembly lies in the ingenious combination of the through groove on the circular gasket, the support shaft, the protrusion, the fin plate and the torsion spring. In the natural state, the fin plate is expanded outward by the support force of the torsion spring, and its bottom end can firmly penetrate into the inner wall of the blast hole to form a stable anchoring effect, effectively preventing the explosive column from sliding backward under its own weight or external force.

[0022] When the explosive column is inserted into the blast hole, if the fin plate encounters resistance from the inner wall of the blast hole, the fin plate will be compressed and transformed into a compressed state. At this time, the torsion spring will undergo torsional deformation, allowing the fin plate to rotate inward around the supporting axis, reducing direct impact and damage to the inner wall of the blast hole. This adaptive adjustment capability not only protects the integrity of the inner wall of the blast hole, but also ensures that the explosive column can be smoothly inserted and fixed in the blast hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The schematic diagram of the explosive column structure of the utility model is shown;

[0024] Figure 2 The schematic diagram of the exploded structure of a single medicine column in the utility model is shown;

[0025] Figure 3 Shows Figure 2 A magnified view of the local structure of the middle A area;

[0026] Figure 4 Shows Figure 2 A magnified view of the local structure of part B in the middle;

[0027] Figure 5 The schematic diagram (I) shows the structure of the anti-skid assembly and the position-binding assembly of a single drug column in the present invention;

[0028] Figure 6 Shows Figure 5 A magnified view of the local structure of the middle C area;

[0029] Figure 7The structure diagram of the anti-skid assembly in the utility model is shown;

[0030] Figure 8 Shows Figure 7 A magnified view of the local structure of the D part;

[0031] Fig. 9 The schematic diagram of the structure of the middle beam position assembly of the utility model is shown;

[0032] Fig.10 The schematic diagram (II) shows the structure of the anti-skid assembly and the position-binding assembly of a single drug column in the present invention;

[0033] Fig.11 Shows Fig.10 A magnified view of the local structure of part E in the middle.

[0034] As shown in the figure: 1. Cartridge body; 11. Cartridge charging tube; 111. Receiving groove; 12. Upper plug; 121. Limiting flange; 13. Lower plug; 131. Blocking column; 132. Threaded column; 133. Annular flange; 2. Anti-skid assembly; 21. Circular gasket; 211. Through groove; 22. Fin plate; 221. Bump; 222. Support shaft; 23. Torsion spring; 3. Positioning assembly; 31. Cross plate; 32. Straight plate; 33. Arc baffle; 34. Positioning anchor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0036] Embodiment 1

[0037] In order to solve the technical problems in the background technology, the following anti-slip type explosive column based on a large elevation angle blast hole is provided:

[0038] Combination Figure 1 , Figures 5 to 8 As shown, an anti-slip type explosive column based on a high-elevation angle blasthole, the explosive column is axially inserted into a blasthole adapted thereto, the explosive column is composed of a plurality of column bodies 1 connected in series, and an anti-slip component 2 is provided at the end of the explosive column;

[0039] The anti-skid assembly 2 comprises a circular washer 21, which is axially sleeved on the top of the corresponding medicine cartridge 1, and the outer circumferential surface of the circular washer 21 is respectively provided with radially symmetrical through grooves 211, and a support shaft 222 is rotatably connected in the through groove 211, and a protrusion 221 is axially fixedly penetrated in the middle of the support shaft 222, and a fin plate 22 is integrally and vertically connected to the bottom end of the protrusion 221, and torsion springs 23 are respectively sleeved axially and symmetrically at the ends of the support shaft 222;

[0040] The fin plate 22 can be divided into a natural state and a compressed state. When in the natural state, the fin plate 22 is supported by the torsion spring 23 and expanded outward, and its bottom end penetrates the inner wall of the blast hole; when in the compressed state, the fin plate 22 is subjected to radial pressure from the inner wall of the blast hole, causing the torsion spring 23 to be twisted and deformed, and the fin plate 22 rotates inward around the support shaft 222.

[0041] By adopting the above technical solution, the anti-slip type explosive column effectively solves the problem that the explosive column is easy to slide back in the blast hole with a large elevation angle by setting the anti-slip component 2, increases the stability of the explosive column in the blast hole, and significantly reduces the potential damage to the inner wall of the blast hole, thereby improving the effect and safety of deep hole blasting;

[0042] The core of the anti-skid assembly 2 is the ingenious combination of the through groove 211 on the circular washer 21, the support shaft 222, the protrusion 221, the fin plate 22 and the torsion spring 23. In a natural state, the fin plate 22 is expanded outward by the support force of the torsion spring 23, and its bottom end can firmly penetrate into the inner wall of the blast hole to form a stable anchoring effect, effectively preventing the explosive column from sliding backward under its own weight or external force.

[0043] When the explosive column is inserted into the blast hole, if the fin plate 22 encounters resistance from the inner wall of the blast hole, the fin plate 22 will be compressed and transformed into a compressed state. At this time, the torsion spring 23 undergoes torsional deformation, allowing the fin plate 22 to rotate inward around the support shaft 222, thereby reducing direct impact and damage to the inner wall of the blast hole. This adaptive adjustment capability not only protects the integrity of the inner wall of the blast hole, but also ensures that the explosive column can be smoothly inserted and fixed in the blast hole.

[0044] In addition, the explosive column is composed of a plurality of charge bodies 1 connected in series. This modular design allows the length of the explosive column to be flexibly adjusted according to the actual depth of the blast hole. At the work site, the number of charge bodies 1 can be increased or decreased as needed, thereby avoiding waste or the trouble of re-drilling due to inappropriate length of the explosive column.

[0045] Embodiment 2

[0046] Combination Figure 1 to Figure 4 , Figure 6 , Figure 7 and Fig.11As shown, based on the above embodiment, this embodiment further provides the following contents:

[0047] In this embodiment, if Figure 2 As shown, the charge column 1 comprises a charge tube 11, and an upper plug 12 and a lower plug 13 are axially sealed at the upper and lower tube openings of the charge tube 11 respectively.

[0048] By adopting the above technical solution, each charge column 1 includes a charging tube 11, and an upper plug 12 and a lower plug 13 are respectively provided at the upper and lower tube openings thereof. This design ensures the sealing of the water gel explosive in the charging tube 11, prevents the explosive from leaking or getting damp during transportation, storage and insertion into the blast hole, and ensures the quality of the explosive and the blasting effect.

[0049] like Figure 1 to Figure 3 As shown, the upper plug 12 is a short tubular structure with a closed bottom end, and its inner wall is provided with an internal thread, and a limiting flange 121 is integrally provided along the circumference of its top edge, and the outer diameter of the limiting flange 121 is the same as the outer diameter of the charging tube 11; the upper plug 12 is interference fit with the upper tube opening of the charging tube 11.

[0050] By adopting the above technical solution, the upper plug 12 is designed as a short tubular structure with a closed bottom end, and is interference fit with the upper tube opening of the charge tube 11. This tight connection method effectively prevents the leakage of water gel explosive in the charge tube 11. At the same time, the inner wall of the upper plug 12 is provided with an internal thread, which provides an additional sealing means for the connection with the lower charge column 1.

[0051] The provision of the limiting flange 121 not only increases the stability of the connection between the upper plug 12 and the charge tube 11, but also ensures a close fit between the two, thereby preventing leakage of explosives from the top.

[0052] like Figure 1 to Figure 4 As shown, the lower plug 13 includes a plugging column 131 which is interference fit with the lower tube mouth of the charging tube 11, and an annular flange 133 is integrally provided circumferentially at the bottom of the plugging column 131. The outer diameter of the annular flange 133 is the same as the outer diameter of the charging tube 11, and a threaded column 132 is axially integrated with the bottom end of the plugging column 131. The threaded column 132 is threadedly fitted with the upper plug 12 corresponding to the charge column body 1 below it.

[0053] By adopting the above technical solution, the plugging column 131 of the lower plug 13 is also interference fit with the lower tube opening of the charge tube 11, further enhancing the overall sealing of the charge column 1. The provision of the annular flange 133 not only increases the stability of the connection between the plugging column 131 and the charge tube 11, but also ensures a close fit between the two, preventing the explosive from leaking from the bottom.

[0054] The design of the threaded column 132 enables the lower plug 13 to be easily connected to the upper plug 12 of the upper medicine column 1 by screwing, thereby realizing the series connection between the medicine columns 1; this connection method not only facilitates on-site assembly, but also improves construction efficiency; at the same time, it can also be disassembled quickly when necessary, which is convenient for replacing or inspecting the medicine column 1.

[0055] The setting of the limiting flange 121 and the annular flange 133 enables the upper plug 12 and the lower plug 13 to form a stable supporting structure at the upper and lower pipe openings of the charging tube 11; this design enhances the stability of the charge column 1 in the blast hole and prevents the explosive column from shifting or falling off due to vibration during the blasting process.

[0056] The outer diameters of the limiting flange 121 and the annular flange 133 are the same as the outer diameter of the charge tube 11. This design enables the consistency of the overall outer diameters of multiple charge columns 1 when connected in series. This not only facilitates the smooth insertion of the charge column into the blast hole, but also ensures the uniform distribution of the charge column in the blast hole, thereby improving the consistency of the blasting effect.

[0057] like Figure 6 , Fig.11 As shown, the circular gasket 21 is axially crimped through the upper plug 12 corresponding to the charge column 1, the outer diameter of the circular gasket 21 is the same as the outer diameter of the charge tube 11, the through groove 211 is connected with the corresponding receiving groove 111 vertically opened at the top of the charge tube 11, and the receiving groove 111 is adapted to the size of the fin plate 22.

[0058] By adopting the above technical solution, the circular gasket 21 in the anti-skid component 2 is directly sleeved on the top of the charge body 1 and fixed by axial crimping with the upper plug 12. This design not only makes the anti-skid component 2 detachably connected to the charge body 1, which is convenient for on-site assembly, but also makes the circular gasket 21 a stable fulcrum for the charge body 1 in the borehole.

[0059] like Figure 7 As shown, the bottom of the fin plate 22 is configured as a double-sided wedge-shaped structure.

[0060] By adopting the above technical solution, the double-sided wedge structure has better adaptability, which enables the bottom of the fin plate 22 to be more easily inserted into the groove or protrusion of the wall of the blasthole, and can provide a stable anti-slip effect regardless of whether the wall is smooth or rough.

[0061] Embodiment 3

[0062] Combined with Figure 5 , Figure 6 as well as Figures 9 to 11 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0063] In this embodiment, a restraining assembly 3 is further provided at the end of the explosive column, and the restraining assembly 3 is used to fold or unfold the fin plate 22 of the anti-slip assembly 2;

[0064] The positioning assembly 3 includes a cross plate 31 mounted on the top surface of the corresponding upper plug 12, the outer end of the cross plate 31 is vertically connected to a straight plate 32 downward, the bottom end of the straight plate 32 is vertically connected to an arc baffle 33, and the inner arc surface of the arc baffle 33 is slidably attached to the outer peripheral surface of the corresponding charge tube 11; four positioning anchor spikes 34 are vertically arranged at equal intervals in the circumferential direction at the center of the top surface of the cross plate 31;

[0065] When the fin plate 22 is in the folded state, the two radially opposite arc-shaped baffles 33 in the tie assembly 3 respectively fold and press the corresponding fin plate 22 into the receiving groove 111;

[0066] When the fin plate 22 is in the expanded state, the positioning anchor 34 of the positioning assembly 3 is axially penetrated into the top surface of the borehole by external force, and the explosive column rotates circumferentially, causing the arc baffle 33 to shift, so that the fin plate 22 is expanded to the outside of the accommodating groove 111 by the return torque of the corresponding torsion spring 23.

[0067] By adopting the above technical solution, by adding a positioning component 3 at the end of the explosive column, working in conjunction with the anti-skid component 2, flexible control of the fin plate 22 is achieved, that is, folding during insertion into the blast hole to reduce disturbance to the inner wall of the blast hole, and unfolding after insertion into the blast hole to ensure the anti-skid effect.

[0068] In the process of inserting the explosive column into the blast hole, the fin plate 22 is in a folded state and is folded and pressed into the receiving groove 111 by the arc-shaped baffle plate 33 in the restraining assembly 3, so that the explosive column can be smoothly inserted into the narrow blast hole, further reducing the disturbance to the inner wall of the blast hole;

[0069] After the explosive column is inserted into the blast hole, a force is manually applied to the tail of the explosive column through a clamp to pierce the positioning anchor 34 of the positioning assembly 3 into the top surface of the blast hole, and the explosive column is rotated to shift the arc baffle 33, thereby releasing the anti-slip fin plate 22; the fin plate 22 is automatically expanded to the outside of the accommodating groove 111 under the reset torque of the torsion spring 23, and is in close contact with the wall of the blast hole, providing a stable anti-slip effect.

[0070] like Fig. 9 As shown, the positioning anchor thorn 34 is a plate-like structure with a sharpened top.

[0071] By adopting the above technical solution, after the plate-shaped positioning anchor 34 with a sharpened top is pierced into the top surface of the blast hole, a stable positioning is provided for the explosive column, preventing the explosive column from moving or rotating in the blast hole.

[0072] The working principle and use process of this utility model:

[0073] When the utility model is used, firstly, a plurality of explosive columns are connected in series through the threaded column of the lower plug and the screw connection of the upper plug to form a complete explosive column.

[0074] Next, install the anti-skid assembly on the top of the charge column. The circular washer of the anti-skid assembly is axially sleeved on the top of the charge column and fixed by axial crimping with the upper plug. The through groove on the circular washer docks with the receiving groove on the top of the charge tube to accommodate the fin plate. The fin plate is supported by the torsion spring and unfolded outward in the natural state, and the bottom pierces the inner wall of the blast hole to provide an anti-skid effect.

[0075] During the insertion into the blast hole, the arc baffle of the beam assembly is connected to the top of the charge column through the cross plate and the straight plate, and the fin plate is folded inwards and pressed into the accommodating groove through the arc baffle.

[0076] After being inserted into the blasthole, the positioning anchor is axially pierced into the top surface of the blasthole to fix the position of the explosive column. Subsequently, the arc baffle is displaced by rotating the explosive column circumferentially to release the pressure on the fin plate. Under the reset torque of the torsion spring, the fin plate automatically unfolds to the outside of the receiving groove, and the bottom pierces the inner wall of the blasthole to achieve anti-slip fixation.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-slip explosive column based on a high-elevation blasthole, wherein the explosive column is axially inserted into a blasthole adapted thereto, and is characterized in that: The explosive column is composed of a plurality of explosive column bodies (1) connected in series, and an anti-slip component (2) is arranged at the end of the explosive column; The anti-skid component (2) comprises a circular gasket (21), the circular gasket (21) is axially sleeved on the top of the corresponding medicine column (1), the outer circumferential surface of the circular gasket (21) is respectively provided with radially symmetrical through grooves (211), a support shaft (222) is laterally rotatably connected in the through groove (211), a protrusion (221) is axially fixedly penetrated in the middle of the support shaft (222), the bottom end of the protrusion (221) is integrally vertically connected with a fin plate (22), and the ends of the support shaft (222) are respectively axially symmetrically sleeved with torsion springs (23); The fin plate (22) is divided into a natural state and a compressed state. In the natural state, the fin plate (22) is supported by the torsion spring (23) and unfolds outward, and its bottom end penetrates the inner wall of the blast hole; in the compressed state, the fin plate (22) is subjected to radial pressure from the inner wall of the blast hole, causing the torsion spring (23) to be twisted and deformed, and the fin plate (22) rotates inward around the support shaft (222).

2. The anti-slip type explosive column based on a high elevation angle blasthole according to claim 1, characterized in that: The powder column (1) comprises a powder charging tube (11), and an upper plug (12) and a lower plug (13) are respectively axially sealed at the upper and lower tube openings of the powder charging tube (11).

3. The anti-slip type explosive column based on a high elevation angle blasthole according to claim 2, characterized in that: The upper plug (12) is a short tubular structure with a closed bottom end, and its inner wall is provided with an internal thread. A limiting flange (121) is integrally provided along the circumference of its top edge, and the outer diameter of the limiting flange (121) is the same as the outer diameter of the charge tube (11); the upper plug (12) is interference fit with the upper tube opening of the charge tube (11).

4. The anti-slip type explosive column based on a high elevation angle blasthole according to claim 3 is characterized in that: The lower plug (13) includes a plugging column (131) which is interference-fitted with the lower tube mouth of the charge tube (11); an annular flange (133) is integrally provided circumferentially at the bottom of the plugging column (131); the outer diameter of the annular flange (133) is the same as the outer diameter of the charge tube (11); a threaded column (132) is axially integrated at the bottom end of the plugging column (131); the threaded column (132) is threadedly fitted with the upper plug (12) corresponding to the charge column body (1) below it.

5. The anti-slip type explosive column based on a high elevation angle blasthole according to claim 3, characterized in that: The circular gasket (21) is axially crimped with the upper plug (12) of the corresponding charge column (1); the outer diameter of the circular gasket (21) is the same as the outer diameter of the charge tube (11); the through groove (211) is connected to the corresponding receiving groove (111) vertically opened at the top of the charge tube (11); and the size of the receiving groove (111) is adapted to that of the fin plate (22).

6. The anti-slip type explosive column based on a high elevation angle blasthole according to claim 5, characterized in that: A restraining assembly (3) is also provided at the end of the explosive column, and the restraining assembly (3) is used to fold or unfold the fin plate (22) of the anti-slip assembly (2); The positioning assembly (3) comprises a cross plate (31) mounted on the top surface of the corresponding upper plug (12); the outer end of the cross plate (31) is vertically connected to a straight plate (32) downward; the bottom end of the straight plate (32) is vertically connected to an arc-shaped baffle (33); the inner arc surface of the arc-shaped baffle (33) is slidably attached to the outer peripheral surface of the corresponding charge tube (11); four positioning anchor spikes (34) are vertically arranged at equal intervals in the circumferential direction at the center of the top surface of the cross plate (31); When the fin plate (22) is in a folded state, two radially opposite arc-shaped baffles (33) in the positioning assembly (3) respectively fold and press the corresponding fin plate (22) into the accommodating groove (111); When the fin plate (22) is in the unfolded state, the positioning anchor barb (34) of the positioning assembly (3) is axially penetrated into the top surface of the blast hole by an external force, and the explosive column rotates circumferentially, causing the arc-shaped baffle plate (33) to shift, so that the fin plate (22) is unfolded to the outside of the accommodating groove (111) by the return torque of the corresponding torsion spring (23).

7. The anti-slip type explosive column based on a high elevation angle blasthole according to claim 5, characterized in that: The bottom of the fin plate (22) is configured as a double-sided wedge-shaped structure.

8. The anti-slip explosive column based on a high-elevation-angle blasthole according to claim 6, characterized in that: The positioning anchor barb (34) is a plate-like structure with a sharpened top.

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