A recyclable hole stemming device

Abstract

This utility model discloses a recyclable borehole plugging device, including a support frame, a bushing, a locking mechanism, and a recycling mechanism. The bushing includes an auxiliary component and two anvils, symmetrically arranged and connected to the support frame via the auxiliary component. The outer surface of each anvil is curved, with the curvature matching that of the borehole wall. The locking mechanism includes a locking element and a torsion spring. The locking element is mounted on the support frame between the two anvils, while the torsion spring is mounted on the support frame and connected to the locking element. The torsion spring tensions the locking element, pushing the outer side of the anvil against the borehole wall. The recycling mechanism is connected to the locking element and retracts it, disengaging the outer side of the anvil from the borehole wall. This utility model enables the recyclability and reuse of the borehole plugging device while effectively ensuring the quality of borehole plugging, reducing overall blasting construction costs, saving resources, and minimizing the device's adverse environmental impact.

Description

Technical Field

[0001] This utility model belongs to the field of blasting engineering technology, specifically relating to a recyclable blast hole filling device. Background Technology

[0002] With the increasing demand for rock mass engineering construction, engineering blasting technology has developed rapidly in water conservancy, transportation, open-pit mining, and other projects. For borehole filling, the traditional method typically involves drilling the borehole according to design requirements, loading industrial explosives and detonating charges into the borehole as required, and then filling it with rock cuttings or gravel. This traditional blasting filling method has at least the following shortcomings:

[0003] (1) The quality of packing cannot be effectively guaranteed, and punching is likely to occur, resulting in low energy utilization of explosives;

[0004] (2) Under the traditional borehole charging structure, the length of rock cuttings or gravel filling is relatively long, resulting in a low effective utilization rate of the borehole and a high proportion of large rock blocks in the filling section, which seriously affects the blasting quality.

[0005] (3) The blast hole filling operation is time-consuming and labor-intensive, and the labor intensity of the operators is high;

[0006] (4) Although there are many mechanical packing devices on the market, they are not effectively promoted due to their complex structure, cumbersome on-site operation and high cost.

[0007] (5) Most of the existing packing devices are disposable consumables that cannot be recycled and reused after blasting. The fragments of the packing device are likely to have an adverse impact on the environment and are also not conducive to reducing the cost of blasting construction. Utility Model Content

[0008] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the existing technology by providing a recyclable borehole plugging device. This device can be recycled and reused while effectively ensuring the quality of borehole plugging, thereby reducing the overall blasting construction cost, saving relevant resources, and minimizing the adverse impact of the device on the surrounding environment.

[0009] The technical solution of this utility model to solve the above-mentioned technical problems is:

[0010] This utility model provides a recyclable borehole plugging device, including a support frame, a bushing, a locking mechanism, and a recycling mechanism, wherein:

[0011] The bushing includes an auxiliary component and two anvils. The two anvils are symmetrically arranged and are connected to the support frame through the auxiliary component. The outer surface of the anvil is curved, and the curvature of the curved surface is the same as the curvature of the borehole wall.

[0012] The locking mechanism includes a locking member and a torsion spring. The locking member is located on the support frame and between the two anvils. The torsion spring is located on the support frame and connected to the locking member. It is used to tension the locking member through the torsion spring and push the outer side of the anvil to press tightly against the borehole wall.

[0013] The recovery mechanism is connected to the locking device and is used to retract the locking device, causing the outer side of the anvil to detach from the borehole wall.

[0014] Optionally, the auxiliary components include a connecting strip and a strip plate. One end of the connecting strip is connected to the cutting board, and the other end of the connecting strip is connected to the strip plate. The strip plate has a through hole in the center for connecting the support frame.

[0015] Optionally, the support frame includes a chassis, a short column, a horizontal axis, and a long rod. One end of the short column is fixed to the chassis, the horizontal axis is vertically and symmetrically fixed to the other end of the short column, one end of the long rod is vertically fixed to the center position of the horizontal axis, and the other end of the long rod passes through a through hole in the strip. The short column, the horizontal axis, and the long rod are located in the same plane.

[0016] Optionally, the chassis has a circular structure with a diameter smaller than that of the blast hole.

[0017] Optionally, the support frame also includes a check ring, which is mounted on the long rod and located on both sides of the strip, along with the horizontal axis. The outer diameter of the check ring is larger than the diameter of the through hole.

[0018] Optionally, both the fasteners and torsion springs are fitted onto the horizontal axis in the support frame. The number of fasteners is even, and the even number of fasteners are evenly distributed on both sides of the horizontal axis. They are paired and locked together by the torsion springs, and the deflection directions of the two fasteners connected to each torsion spring are opposite.

[0019] Optionally, the fastener is an eccentric structural component, with envelope curved surfaces on both the inner and outer sides; the contact area between the outer curved surface of the fastener and the inner side of the cutting board is provided with reverse tooth wave patterns.

[0020] Optionally, the fastener has a rope hole near the wingtip, and the recovery mechanism includes a pull rope and a pull ring.

[0021] One end of the pull rope is connected to the fastener through the rope hole, and the other end of the pull rope is connected to the pull ring, which is fitted onto the long rod.

[0022] Optionally, the support frame also includes end caps, which are located at both ends of the horizontal axis.

[0023] Optionally, the device may also include an explosion-proof layer located below the chassis. The explosion-proof layer may be a certain thickness of sand, clay, or rock debris, or a certain thickness of a water-filled bag.

[0024] This utility model's recyclable borehole plugging device, based on the design concept of recyclability and reuse, achieves the following beneficial effects through optimized structural design of the borehole plugging device:

[0025] (1) It can be recycled and reused, saving relevant resources, reducing the adverse impact of the device itself on the surrounding environment, and significantly reducing the cost of blasting construction.

[0026] (2) It can effectively improve the construction efficiency and quality of blast hole plugging, reduce the labor intensity of blast hole filling operations, reduce the incidence of blast hole punching accidents, and effectively improve the level of on-site safety management.

[0027] (3) It can standardize the construction of blast hole filling, which not only facilitates on-site operation and construction, but also improves the overall quality of blasting construction.

[0028] (4) It can improve the hole plugging strength, effectively shorten the hole plugging length, increase the hole charge length accordingly, improve the hole effective utilization rate and explosive energy utilization rate, and improve the overall blasting quality. Attached Figure Description

[0029] Figure 1 A schematic diagram of the recyclable borehole filling device in this embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the recyclable borehole filling device model in this embodiment of the present invention;

[0031] Figure 3 Side view of the recyclable borehole filling device in this embodiment of the present invention;

[0032] Figure 4 A side view of the recyclable borehole filling device in this embodiment of the present invention;

[0033] Figure 5 Side view of the recyclable borehole filling device model in this embodiment of the present invention;

[0034] Figure 6 A front view of the recyclable borehole filling device model in this embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the support frame in an embodiment of this utility model;

[0036] Figure 8 Side view of the support frame in this embodiment of the present invention;

[0037] Figure 9 A front view of the support frame in an embodiment of this utility model;

[0038] Figure 10A schematic diagram of the bushing in an embodiment of this utility model;

[0039] Figure 11 Side view of the bushing in this embodiment of the present invention;

[0040] Figure 12 A front view of the bushing in an embodiment of this utility model;

[0041] Figure 13 A schematic diagram of the card firmware in the embodiments of this utility model;

[0042] Figure 14 A front view of the card firmware in this embodiment of the present invention;

[0043] Figure 15 A schematic diagram of the torsion spring in an embodiment of this utility model;

[0044] Figure 16 A schematic diagram of the pull ring in an embodiment of this utility model;

[0045] Figure 17 A front view of the pull ring in this embodiment of the present invention;

[0046] Figure 18 A schematic diagram of the field application of the recyclable borehole filling device in this embodiment of the present invention.

[0047] In the diagram: 1-Chassis; 2-Short column; 3-Horizontal shaft; 4-Clamping device; 5-Torsion spring; 6-End cap; 7-Anvil; 8-Long rod; 9-Pull rope; 10-Connecting strip; 11-Strip plate; 12-Reverse ring; 13-Pull ring; 14-Spring hole; 15-Rope hole; 16-Outrigger; 17-Blast hole filling device; 18-Industrial explosive; 19-Detonating charge; 20-Detonator lead wire; 21-Explosion-proof layer. Detailed Implementation

[0048] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0049] It is understood that the specific embodiments and accompanying drawings described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0050] It is understood that, without conflict, the various embodiments and features in the embodiments of this utility model can be combined with each other.

[0051] It is understood that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, while the parts unrelated to this utility model are not shown in the drawings.

[0052] It is understood that each unit or module involved in the embodiments of this utility model may correspond to only one entity structure, or may be composed of multiple entity structures, or multiple units or modules may be integrated into one entity structure.

[0053] To address the problems of unreliable filling quality and high cost associated with traditional blasting and tamping methods, this invention provides a recyclable borehole tamping device, comprising a support frame, a bushing, a locking mechanism, and a retrieval mechanism, wherein:

[0054] The bushing includes two anvils, which are symmetrically arranged and connected to the support frame. The outer surface of the anvil is curved, and the curvature of the curved surface is the same as that of the borehole wall so that it can fit tightly against the borehole wall.

[0055] The locking mechanism includes a locking member and a torsion spring. The locking member is located on the support frame and between the two anvils. The torsion spring is located on the support frame and connected to the locking member. It is used to tension the locking member through the torsion spring, so that the locking member abuts against the inner side of the anvil and generates a contact squeezing force, pushing the outer side of the anvil to press tightly against the borehole wall.

[0056] The recovery mechanism is connected to the locking device and is used to retract the locking device, eliminate the contact pressure between the locking device and the inner side of the anvil, and detach the outer side of the anvil from the borehole wall.

[0057] This utility model's recyclable borehole plugging device can achieve the recycling and reuse of the borehole plugging device while effectively ensuring the quality of borehole plugging. This reduces the overall cost of blasting construction, saves related resources, and minimizes the adverse impact of the device itself on the surrounding environment. It can be applied to blasting construction in various fields such as open-pit mines, water conservancy and hydropower, and transportation.

[0058] Example 1

[0059] like Figures 1-18As shown, this embodiment discloses a recyclable borehole plugging device, comprising a recyclable module consisting of a support frame, a bushing, a locking mechanism, and a recycling mechanism. The bushing includes an auxiliary component and two anvils 7, symmetrically arranged and connected to the support frame via the auxiliary component. The outer surface of each anvil 7 is curved, with the curvature matching that of the borehole wall to ensure a tight fit. The locking mechanism includes a clamping element 4 and a torsion spring 5. The clamping element 4 is mounted on the support frame and positioned between the two anvils 7. The torsion spring 5 is mounted on the support frame and connected to the clamping element 4, used to tension the clamping element 4, causing it to abut against the inner surface of the anvil 7 and generate contact pressure, pushing the outer surface of the anvil 7 tightly against the borehole wall. The anvil 7 increases the contact area of ​​the clamping element 4, providing more sufficient friction, improving borehole plugging quality, and preventing perforation. The recycling mechanism is connected to the locking device 4 and is used to retract the locking device 4, eliminate the contact pressure between the locking device 4 and the inner side of the anvil 7, and separate the outer side of the anvil 7 from the borehole wall, thereby recycling and reusing the device.

[0060] In some embodiments, the inner side of the cutting board 7 is a rough surface to increase the dynamic friction strength between the fastener 4 and the cutting board 7.

[0061] In some embodiments, the auxiliary component includes a connecting strip 10 and a strip 11. One end of the connecting strip 10 is connected to the middle of the end (inner side) of the anvil 7, and the other end of the connecting strip 10 is connected to the strip 11. The strip 11 is used to be clamped at the borehole opening, and the center of the strip 11 is provided with a through hole for connecting the support frame.

[0062] Specifically, there are two connecting strips 10, each connected to a cutting board 7. The two connecting strips 10 and the two cutting boards 7 are symmetrically distributed from left to right relative to the center of the strip 11.

[0063] In some embodiments, the support frame includes a chassis 1, a short column 2, a horizontal axis 3, and a long rod 8. One end of the short column 2 is fixed to the center of the chassis 1, the horizontal axis 3 is vertically and symmetrically fixed to the other end of the short column 2, and the long rod 8 is vertically fixed to the middle position of the horizontal axis 3. One end of the long rod 8 passes through the through hole of the strip 11, and the short column 2, the horizontal axis 3, and the long rod 8 are located in the same plane.

[0064] In this embodiment, the short column 2, the horizontal axis 3, and the long rod 8 are all cylindrical structures.

[0065] In some embodiments, the chassis 1 is a circular structure with a diameter smaller than (slightly smaller than) the diameter of the borehole. During use, the detonator lead wire 20 can safely pass through the gap between the chassis 1 and the borehole wall.

[0066] In some embodiments, the support frame further includes a check ring 12, which is mounted on the long rod 8 and positioned on both sides of the strip 11, along with the horizontal axis 3. The outer diameter of the check ring 12 is larger than the diameter of the through hole in the center of the strip 11, and it mainly serves a positioning function. During use, the fastener 4 is located between the two anvils 7. After the long rod 8 is inserted into the through hole in the center of the strip 11, the check ring 12 is fixedly connected at a suitable position on the long rod 8 to prevent the fastener 4 from disengaging from the working area between the two anvils 7, and also to prevent the long rod 8 from slipping out of the through hole in the strip 11 during the blasting process.

[0067] In some embodiments, both the fastener 4 and the torsion spring 5 are sleeved on the horizontal shaft 3 in the support frame. The number of fasteners 4 is even, and the even number of fasteners 4 are evenly distributed on both sides of the horizontal shaft 3. The fastener 4 has a spring hole 14 near the center position. The spring hole 14 is used to secure the support leg 16 of the torsion spring 5. The even number of fasteners 4 are paired and locked together by the torsion spring 5, and the deflection directions of the two fasteners 4 connected to each torsion spring 5 are opposite.

[0068] In some embodiments, the fastener 4 is an eccentric structural component, and both the inner and outer sides of the fastener 4 are provided with envelope curved surfaces. The contact area between the outer curved surface of the fastener 4 and the inner side of the anvil 7 is provided with reverse tooth wave patterns to increase the friction during the working process.

[0069] In some embodiments, the locking device 4 has a rope hole 15 near the wingtip. The retrieval mechanism includes a pull rope 9 and a pull ring 13. The rope hole 15 is used to thread the pull rope 9 through, and one end of the pull rope 9 is connected to the locking device 4 through the rope hole 15. The pull ring 13 also has a rope hole 15, and the other end of the pull rope 9 is connected to the pull ring 13 through the rope hole 15 on the pull ring 13. The pull ring 13 is sleeved on the long rod 8 and can move freely on the long rod 8. The pull ring 13 is linked to the locking device 4 through the pull rope 9. By moving the pull ring 13, the locking device 4 can be retracted and tensioned.

[0070] In this embodiment, since there are an even number of fasteners 4, there are also an even number of pull ropes 9. One end of each pull rope 9 is connected to a fastener 4, and the other end is connected to a pull ring 13. When the pull ring 13 is slid, all the fasteners 4 can be moved synchronously through each pull rope 9.

[0071] In some embodiments, the support frame also includes end caps 6, which are located at both ends of the horizontal shaft 3. The end caps mainly serve to seal and prevent the fasteners 4 and torsion springs 5 ​​from slipping off the horizontal shaft 3.

[0072] In some embodiments, the support frame, bushing, locking mechanism, and recycling mechanism in this device, i.e., the recycling module, are made of metal or other high-strength materials.

[0073] In some embodiments, the device further includes an explosion-proof layer 21, which is disposed below the chassis 1 in the recyclable module. The explosion-proof layer 21 is a layer of sand, clay, or rock debris of a certain thickness, or a water-filled bag of a certain thickness. The explosion-proof layer can effectively block the high-temperature and high-pressure energy after the explosive detonation from directly contacting the recyclable module in the borehole filling device 17, preventing the explosive energy from directly damaging the recyclable module in the borehole filling device. At the same time, the presence of the explosion-proof layer can also act as a cushioning layer, providing indirect protection for the borehole filling device.

[0074] The working principle of the recyclable borehole plugging device in this embodiment is described in detail below:

[0075] like Figure 18 As shown, after the industrial explosive 18 and the detonating charge 19 are filled into the borehole to the designed position, the borehole filling device 17 in this embodiment is then installed. This includes: first, arranging a certain thickness of explosion-proof layer 21 on the upper surface of the industrial explosive 18, and then installing the assembled recyclable module to the designated blocking height as required (i.e., the blocking position height of the borehole filling device in the borehole refers to the distance between the bottom interface of the chassis and the borehole opening. The optimal filling position height under a certain geological condition can be obtained through on-site blasting tests, and the relevant dimensions of the filling device are designed and processed based on this position height). At this time, the entire borehole filling device is fixed at the borehole opening by the strip plate 11, and the fixing device is also in direct contact with the inner side of the anvil plate through the torsion spring and enters the working state. When the industrial explosives in the borehole detonate, the resulting high temperature and pressure blast energy is effectively blocked by the explosion-proof layer, preventing direct damage to the borehole filling device. The blast energy pushes the explosion-proof layer upwards and is then transmitted to the chassis 1 below the borehole filling device. Under the force, the chassis 1 drives the entire support frame to move upwards. At this time, the fastener 4 on the horizontal axis 3, after being subjected to the force applied by the horizontal axis 3, has a tendency to move downwards (relative to the stationary anvil). Since the fastener 4 is an eccentric structure, after being subjected to the force, the compressive force between it and the inner side of the anvil 7 will continuously increase. After being constrained by the borehole wall on the other side (i.e., the outer side) of the anvil 7, the dynamic friction intensity between the fastener 4 and the inner side of the anvil 7 will also continuously increase. This process makes the borehole filling device firmly plugged in the borehole, achieving a good borehole plugging effect, effectively preventing the explosive gas from rushing out of the borehole, reducing the borehole punching rate, and improving the energy utilization rate of the explosives in the borehole.

[0076] After the blasting is completed, the locking device 4 can be rotated and retracted by pulling the pull ring 13, eliminating the contact pressure between the locking device 4 and the inner side of the anvil plate 7, thereby realizing the recovery of the blast hole filling device from the blast hole and its reuse in subsequent blasting operations.

[0077] The specific construction process involves the following steps:

[0078] Step 1: Complete the drilling of the blast hole according to the design requirements, then fill the blast hole with industrial explosives to the design height, and at the same time fill the detonator charge, ensuring that the detonator lead wire extends a certain length outside the hole.

[0079] Step 2: Based on the field test results, install a certain thickness of explosion-proof layer 21 above the top interface of the explosive in the borehole. Then, fill the reusable module in the borehole filling device 17 as required (the relevant dimensions and blocking height of the reusable module should be determined based on the field blasting test results). Ensure that the bottom interface of the borehole filling device chassis is in close contact with the top interface of the explosion-proof layer. The strip 11 on the borehole filling device will be locked at the borehole opening, making the entire borehole filling device stable. At the same time, the outer curved surface of the fastener 4 in the filling section and the inner surface of the anvil 7 are under a certain compression state under the action of the torsion spring, i.e., the working state. Finally, ensure that the detonator lead extends safely out of the borehole along the gap between the borehole filling device 17 and the borehole wall, avoiding the detonator lead being squeezed by the borehole filling device.

[0080] Step 3: After completing the construction of all borehole filling devices according to Step 2, conduct the network detonation according to the design requirements.

[0081] Step 4: After the blasting is completed, and provided the blasting area is safe, retrieve the borehole plugging device. During retrieval, pull the ring on the long rod to rotate the clamp on the horizontal shaft, releasing the clamp from contact with the inner side of the anvil. Remove the borehole plugging device and collect it for use in the next blasting plugging operation.

[0082] The above construction process can effectively improve the quality and efficiency of blast hole plugging, while also improving the utilization rate of blast hole and explosive energy, reducing the cost of blasting and plugging construction, and improving the overall blasting quality.

[0083] The following provides a set of specific application scenario examples to illustrate the application of the recyclable borehole filling device in this embodiment, as follows:

[0084] For a rock loosening blasting area in a large open-pit coal mine, the specific construction parameters for deep-hole bench loosening blasting were determined based on the actual production conditions on site as follows: bench height is 15 m, and the working bench slope angle is... The borehole is drilled at a 70° angle with a diameter of 138 mm. It is a vertical borehole with an over-depth of 1.5 m. The industrial explosive used is a field-mixed emulsion explosive. The detonation charge is made using one industrial electronic detonator and one detonator. Field tests showed that a 1 m thick soil blast-proof layer inside the borehole is sufficient to effectively prevent damage to the borehole plugging device from explosive detonation. Furthermore, considering the geological conditions, the minimum plugging height of the retrievable module in the borehole plugging device is 1.5 m from the borehole opening. Therefore, the relevant dimensions for the retrievable module in the borehole plugging device are: an overall length of 1.8 m, and a distance of 1.5 m between the strip or check ring and the chassis.

[0085] The specific construction method adopts the following steps:

[0086] Step 1: Complete the drilling construction according to the design requirements, then fill the borehole with industrial explosives 14m above the bottom of the hole, and at the same time fill the detonator charge, ensuring that the detonator lead wire extends a certain length outside the hole.

[0087] Step 2: Based on the field test results, add a 1m thick layer of blast-resistant soil above the top interface of the explosive in the borehole. Then, fill the recyclable module in the borehole filling device 17 as required, ensuring that the bottom interface of the borehole filling device chassis is in close contact with the top interface of the blast-resistant layer. At this time, the strip 11 on the borehole filling device will be locked at the borehole opening, stabilizing the entire borehole filling device. Finally, ensure that the detonator lead extends safely out of the borehole along the gap between the borehole filling device 17 and the borehole wall, avoiding compression of the detonator lead by the borehole filling device.

[0088] Step 3: After all the borehole filling devices are in place according to Step 2, conduct the network detonation according to the design requirements;

[0089] Step 4: After the blasting is completed, under the condition of ensuring the safety of the blasting area, the borehole filling device is retrieved. The recyclable modules of the borehole filling device are taken out from the borehole and collected in a unified manner for use in the next blasting filling operation.

[0090] In summary, the recyclable borehole plugging device of this embodiment, based on the design concept of recyclability and reuse, achieves the following beneficial effects by optimizing the structural design of the borehole plugging device, thus solving the defects of traditional engineering blasting plugging construction methods, such as poor engineering quality, high labor intensity of workers, low construction efficiency, poor safety, low borehole utilization rate and explosive energy utilization rate, environmental unfriendliness, poor blasting quality, and high overall construction cost:

[0091] (1) It can be recycled and reused, saving relevant resources, reducing the adverse impact of the device itself on the surrounding environment, and significantly reducing the cost of blasting construction.

[0092] (2) It can effectively improve the construction efficiency and quality of blast hole plugging, reduce the labor intensity of blast hole filling operation, reduce the incidence of blast hole punching accidents, and effectively improve the level of on-site safety management.

[0093] (3) It can standardize the construction of blast hole filling, which not only facilitates on-site operation and construction, but also improves the overall quality of blasting construction.

[0094] (4) It can improve the hole plugging strength, effectively shorten the hole plugging length, increase the hole charge length accordingly, improve the hole effective utilization rate and explosive energy utilization rate, and improve the overall blasting quality.

[0095] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A recyclable borehole plugging device, characterized in that, Includes support frame, bushing, clamping mechanism and recycling mechanism; The bushing includes an auxiliary component and two anvils (7). The two anvils (7) are symmetrically arranged and are connected to the support frame through the auxiliary component. The outer surface of the anvil (7) is an arc surface, and the curvature of the arc surface is the same as the curvature of the borehole wall. The locking mechanism includes a locking device (4) and a torsion spring (5). The locking device (4) is located on the support frame and between the two anvils (7). The torsion spring (5) is located on the support frame and connected to the locking device (4). It is used to tighten the locking device through the torsion spring and push the outer side of the anvil to fit tightly against the borehole wall. The recycling mechanism is connected to the fastener (4) and is used to retract the fastener so that the outer side of the anvil plate is separated from the borehole wall.

2. The recyclable borehole plugging device according to claim 1, characterized in that, The auxiliary components include a connecting strip (10) and a strip (11). One end of the connecting strip (10) is connected to the anvil (7), and the other end of the connecting strip (10) is connected to the strip (11). The strip (11) has a through hole in the center, which is used to connect the support frame.

3. The recyclable borehole plugging device according to claim 2, characterized in that, The support frame includes a chassis (1), a short column (2), a horizontal shaft (3), and a long rod (8). One end of the short column (2) is fixed on the chassis (1), the horizontal axis (3) is vertically and symmetrically fixed on the other end of the short column (2), one end of the long rod (8) is vertically fixed at the middle position on the horizontal axis (3), the other end of the long rod (8) passes through the through hole, and the short column (2), the horizontal axis (3) and the long rod (8) are located in the same plane.

4. The recyclable borehole plugging device according to claim 3, characterized in that, The chassis (1) is a circular structure with a diameter smaller than that of the blast hole.

5. The recyclable borehole plugging device according to claim 3, characterized in that, The support frame also includes a check ring (12). The check ring (12) is located on the long rod (8) and is located on both sides of the strip (11) along with the horizontal axis (3). The outer diameter of the check ring (12) is larger than the diameter of the through hole.

6. The recyclable borehole plugging device according to any one of claims 3 to 5, characterized in that, Both the fastener (4) and the torsion spring (5) are sleeved on the horizontal shaft (3) in the support frame. The number of the fasteners (4) is even, and the even number of fasteners (4) are evenly distributed on both sides of the horizontal axis (3). They are paired and locked together by the torsion springs (5), and the deflection directions of the two fasteners (4) connected by each torsion spring (5) are opposite.

7. The recyclable borehole plugging device according to claim 6, characterized in that, The fastener (4) is an eccentric structural component. Both the inner and outer sides of the fastener (4) are provided with envelope curved surfaces. The outer curved surface of the fastener (4) and the inner side of the anvil (7) are provided with reverse tooth wave patterns.

8. The recyclable borehole plugging device according to claim 7, characterized in that, The fastener (4) has a rope hole (15) near the wingtip, and the recovery mechanism includes a pull rope (9) and a pull ring (13). One end of the pull rope (9) is connected to the fastener (4) through the rope hole (15), and the other end of the pull rope (9) is connected to the pull ring (13), and the pull ring (13) is sleeved on the long rod (8).

9. The recyclable borehole plugging device according to claim 7, characterized in that, The support frame also includes end caps (6), which are located on the two ends of the horizontal axis (3).

10. The recyclable borehole plugging device according to claim 9, characterized in that, The device also includes an explosion-proof layer (21). The explosion-proof layer (21) is located below the chassis (1). The explosion-proof layer is sand, clay or rock debris, or the explosion-proof layer is a water bag filled with water.

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