A device for repairing and reinforcing a goaf filling body of an upward drilling

Abstract

The utility model discloses a kind of goaf filling body repair reinforcement devices for upward drilling, for solving the problem of difficult fissure repair inside goaf filling body, including rock base adhesive pressure equipment, pipeline and hole bottom sealing element;Hole bottom sealing element is arranged in the upward hole drilled to goaf filling body by bottom pillar ore body upwards, and is closely contacted with the hole wall of upward hole, and a closed space is formed in the hole bottom of upward hole by plugging;The hole bottom of upward hole is communicated with at least one fissure inside goaf filling body;Pipeline one end connects the rock base adhesive pressure equipment outside upward hole, and the other end is connected to the closed space of the hole bottom of upward hole by passing through the sealing element in upward hole, and rock base adhesive pressure equipment is injected rock base adhesive to the fissure of filling body communicated by pipeline to the hole bottom of upward hole, and goaf filling body is repaired and reinforced.The utility model realizes the repair protection to fissure in goaf filling body above when mining bottom pillar, and the safety of stoping operation is improved.

Description

Technical Field

[0001] This utility model discloses a grouting and reinforcement device for goaf filling in upward drilling, which belongs to the field of underground mine mining safety operation technology. Background Technology

[0002] In the mining of residual ore at the bottom pillar, the propagation of stress waves caused by ground pressure and blasting operations in other areas often creates numerous new fractures in the backfill above the pillar and its surrounding area. The appearance of these fractures significantly weakens the overall mechanical properties of the backfill, especially its compressive strength and stability, thus directly affecting the safety and efficiency of the mining operation at the bottom pillar.

[0003] Repair and enhancement methods for cracks appearing inside the formed filling body in underground goaf areas include two approaches: external reinforcement and internal repair.

[0004] External reinforcement enhances the support strength of the backfill by adding supporting structures to the bottom of the backfill. For example, Chinese patent application CN120592675A discloses a method for coordinated roadway protection using roadway-side backfill and roof grouting. This method involves drilling a hole along the roadway direction in the fractured surrounding rock on one side of the goaf to obtain a roof borehole, and then arranging a roadway-side backfill wall structure below it. After filling the backfill with gangue, grout is injected into both the roof borehole and the backfill wall structure. Once the grout inside the backfill wall structure solidifies, it forms the roadway-side backfill, effectively controlling roof hazards caused by the surrounding rock and water-rich strata, and significantly improving the overall stability of the roadway. However, this method occupies the mining space below the backfill, hindering mining operations, and it does not repair internal fractures within the backfill, leaving the internal structure still unstable.

[0005] Internal repair employs a method similar to that used for road surface geological distress repair. This involves drilling holes into the backfill material and injecting a repair agent into these holes. The repair agent fills the internal cracks of the backfill material, bonding and reinforcing its structure. Injecting the repair agent into the backfill material repairs existing internal cracks, preventing further crack propagation and improving the overall structural strength of the backfill material. Furthermore, compared to external reinforcement, it does not require occupying the mining space below the backfill material, making it more beneficial for mining operations. However, road surface geological distress repair involves drilling downwards from the road surface to access the damaged area below. The repair agent can then flow downwards into the damaged area by gravity. In contrast, in bottom pillar mining operations, the mining face is located below the backfill material. Repairing the upper backfill material requires drilling upwards to inject the repair agent into the cracks within the backfill material. In this case, gravity becomes a resistance to the injection of the repair agent into the cracks within the backfill material, making it difficult for the repair agent to effectively fill the cracks within the backfill material through the upward-drilled holes. Utility Model Content

[0006] The technical problem solved by this utility model is: addressing the difficulty in repairing internal cracks in goaf filling bodies, this utility model provides a goaf filling body repair and reinforcement device for upward drilling.

[0007] This utility model is achieved using the following technical solution:

[0008] A device for repairing and reinforcing goaf backfill in upward drilling includes a rock-based adhesive pressure device 400, a pipeline 500, and a bottom-of-hole seal 600. The bottom-of-hole seal 600 is installed inside an upward-drilling hole 201 drilled from the bottom pillar ore body into the goaf backfill, and is in close contact with the hole wall of the upward-drilling hole 201, sealing the bottom of the upward-drilling hole 201 to form a sealed space. The bottom of the upward-drilling hole 201 communicates with at least one fracture within the goaf backfill. One end of the pipeline 500 is connected to the rock-based adhesive pressure device 400 outside the upward-drilling hole, and the other end passes through the bottom-of-hole seal 600 inside the upward-drilling hole and connects to the sealed space at the bottom of the upward-drilling hole. The rock-based adhesive pressure device injects rock-based adhesive through the pipeline into the fracture of the backfill communicating with the bottom of the upward-drilling hole, thereby repairing and reinforcing the goaf backfill.

[0009] In a preferred embodiment of this utility model, the bottom sealing member 600 is a solid sealing plug 601, and the outer periphery of the sealing plug 601 is tightly fitted with the wall of the upward hole.

[0010] In the above-described device for repairing and reinforcing goaf filling bodies for upward drilling of this utility model, the pipeline 500 is further described as a grouting rigid pipe 501, which passes through a sealing plug 601 and is fixedly connected to the sealing plug 601. The sealing plug is then sent into the upward hole using the grouting rigid pipe.

[0011] In the above-described device for repairing and reinforcing goaf filling bodies for upward drilling of this utility model, the grouting hard pipe 501 further adopts a multi-segment spliced ​​pipe body to adapt to upward holes of different depths.

[0012] In another preferred embodiment of this utility model, the bottom sealing element 600 is a sealing airbag 602. The sealing airbag 602 has an annular cavity for connecting an inflation tube. The pipeline 500 passes through the outer channel of the central airbag of the sealing airbag and connects to the bottom of the upward hole and the rock-based adhesive pressure device. After inflation, the outer peripheral wall of the sealing airbag 602 is pressed against the hole wall of the upward hole, and the inner peripheral wall presses against the outer channel of the central airbag and the pipeline 500.

[0013] In another of the above-described devices for repairing and reinforcing goaf filling bodies in upward drilling, the pipeline 500 further includes a grouting hose 502 and a rigid grouting insertion tube 503. The grouting insertion tube 503 is inserted into the outer channel of the central airbag of the sealing airbag 602, connecting both sides of the sealing airbag. The grouting hose 502 and the grouting insertion tube 503 are connected to the side near the opening of the upward borehole and extend to the rock-based adhesive pressure device outside the upward borehole.

[0014] In another of the above-mentioned devices for repairing and reinforcing goaf filling bodies for upward drilling of this utility model, a compression sealing tube 603 is further provided in the outer channel of the central airbag of the sealing airbag 602. A slit is provided in the center of the compression sealing tube 603 along the axial direction. The grouting insertion tube 503 is inserted into and penetrates the slit to form the cavity of the compression sealing tube 603.

[0015] In another of the above-described devices for repairing and reinforcing goaf filling bodies for upward drilling, the sealing airbag 602 further includes an inflation port with a one-way inflation valve 605, and the inflation pipe is connected to the inflation port. The one-way inflation valve allows the sealing airbag to remain in an inflated state at the bottom of the upward borehole.

[0016] In another of the above-described devices for repairing and reinforcing goaf filling bodies for upward drilling, the inflation pipe further includes an inflation needle 504 and an inflation hose 505. The inflation needle 504 is inserted into the inflation port of the sealed airbag 602 and extends to the inflation device outside the upward hole through the inflation hose 505.

[0017] In another of the above-described devices for repairing and reinforcing goaf filling bodies for upward drilling, the sealing airbag 602 is further provided with an annular pad 604 on the side near the opening of the upward hole. The outer diameter of the pad 604 is smaller than the diameter of the upward hole, and the pad facilitates pushing the sealing airbag into the upward hole through a long rod.

[0018] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0019] (1) This utility model is designed to repair and reinforce the filling body by injecting rock-based adhesive into the cracks in the filling body of the goaf through the upward hole drilled during the bottom pillar mining process. This achieves internal repair and reinforcement of the filling body of the goaf without changing the space occupied by the mining operation, and without the need for separate reinforcement structure construction of the filling body. The upward hole for injecting rock-based adhesive can directly utilize the upward blast hole of the mining operation, and no special drilling operation is required. The construction is simple and convenient.

[0020] (2) Based on the problem that the rock-based adhesive is prone to backflow in the upward hole, this utility model constructs a sealed space at the bottom of the upward hole by setting a bottom sealing element. The bottom sealing element is used to prevent the rock-based adhesive from backflowing out of the upward hole during injection, so as to ensure that the rock-based adhesive is efficiently injected into the cracks of the goaf filling body from bottom to top.

[0021] (3) This utility model further designs two types of hole bottom seals for different application scenarios. The solid sealing plug and the pipeline form a rigid structure, which makes it easy to quickly send the sealing plug into the bottom area of ​​the upper hole. After the rock matrix adhesive is injected into the cracks of the goaf filling body, the pipeline and sealing plug can be quickly pulled out from the upper hole. It is suitable for the scheme of repairing and reinforcing only the cracks of the goaf filling body.

[0022] (4) In the scheme of using a sealing airbag, the sealing airbag completes the sealing of the bottom of the upward hole after inflation, ensuring the smooth injection of the rock matrix adhesive. At the same time, the sealing airbag and the pipeline and the inflation pipe are respectively connected by separable grouting pipe and inflation needle. After the rock matrix adhesive is injected to reinforce the goaf filling body, the grouting pipe and inflation needle are pulled out to separate the pipeline and the sealing airbag. The sealing airbag can be left at the bottom of the upward hole and used as a bottom buffer structure in the subsequent upward hole charging blasting process. It is combined with the charging structure in the hole of the bottom pillar mining. Through the flexible energy absorption of the airbag, the impact of some of the blasting energy on the goaf filling body during the mining blasting process is eliminated, so as to further protect the upper goaf filling body in the bottom pillar mining.

[0023] In summary, the goaf filling body repair and reinforcement device for upward drilling provided by this utility model can repair and protect the cracks in the upper goaf filling body during the mining of the bottom pillar, thereby improving the safety of the mining operation. The reinforcement operation is simple and convenient to carry out using the upward hole of the mining operation, and reduces the additional construction costs.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the repair and reinforcement construction of the goaf filling body using upward drilling from the bottom pillar ore body in the embodiment.

[0026] Figure 2 This is a schematic diagram of the sealing plug being inserted into the upward hole in the goaf filling body repair and reinforcement device used in Example 1.

[0027] Figure 3 This is a schematic diagram of the goaf filling body repair and reinforcement device in Example 1 after injecting the rock matrix adhesive into the goaf filling body.

[0028] Figure 4This is a schematic diagram of the sealing airbags installed in the upward hole of the goaf filling body repair and reinforcement device in Example 2.

[0029] Figure 5 This is a schematic diagram of the sealing airbag used in the goaf filling and reinforcement device in Example 2 after it is inflated in the upward hole.

[0030] Figure 6 This is a schematic diagram of the goaf filling body repair and reinforcement device in Example 2 after injecting rock matrix adhesive into the goaf filling body.

[0031] Numbering in the diagram: 100-Entry stope, 200-Bottom pillar ore body, 201-Upward borehole, 300-Goaf filling body, 301-Fracture, 400-Rock base adhesive pressure equipment, 500-Pipeline, 501-Grouting rigid pipe, 502-Grouting hose, 503-Grouting insertion pipe, 504-Inflation pin, 505-Inflation hose, 600-Bottom hole seal, 601-Sealing plug, 602-Sealing airbag, 603-Compression sealing tube, 604-Plate, 605-One-way inflation valve. Detailed Implementation

[0032] Example 1

[0033] See Figure 1The illustrated device for repairing and reinforcing the goaf filling body 300 using an upward borehole drilled from the bottom pillar ore body 200 is a specific embodiment of this utility model. The goaf filling body repair and reinforcement device is implemented based on the upward borehole 201 drilled from the bottom pillar ore body 200 during mining. The upward borehole 201 is drilled from the access stope 100 below the goaf filling body 300 to the top of the bottom pillar ore body 200. The bottom of the upward borehole 201 is drilled to connect with at least one fracture 301 in the goaf filling body 300. The goaf backfill repair and reinforcement device in this embodiment includes three parts: a rock-based adhesive pressure device 400, a pipeline 500, and a bottom-hole seal 600. The bottom-hole seal 600 is located inside the upward-facing borehole 201 near the bottom. Since this borehole is drilled from bottom to top, the bottom is located at the upper end of the borehole near the goaf backfill. The bottom-hole seal 600 is in close contact with the borehole wall of the upward-facing borehole 201, sealing the bottom of the borehole 201 to form a sealed space. One end of the pipeline 500 is connected to the rock-based adhesive pressure device 400 outside the upward-facing borehole. The other end passes through the bottom seal 600 inside the upward hole and connects to the sealed space at the bottom of the upward hole. The rock-based adhesive pressure device 400 is arranged in the access stope 100 of the bottom pillar ore body 200. The rock-based adhesive is injected into the bottom of the upward hole 201 through the pipeline 500. The bottom seal 600 forms a sealed space at the bottom of the upward hole as a buffer chamber to prevent the adhesive from flowing back downward. As the rock-based adhesive is injected under pressure, it is squeezed into the cracks 301 of the goaf filling body that are connected to the bottom of the hole, thereby repairing and reinforcing the cracks inside the goaf filling body.

[0034] See also Figure 2 In the goaf filling body repair and reinforcement device of this embodiment, the bottom sealing element 600 adopts a solid sealing plug 601, which is made of rubber or other sealing materials with elastic deformation that can be used to make sealing elements. The outer periphery of the sealing plug 601 can be cylindrical or conical. The maximum diameter of its outer periphery is tightly fitted with the inner diameter of the hole wall of the upward hole 201. The sealing plug 601 is installed in the upward hole, and the sealing plug 601 is pressed by the elastic deformation formed between its outer periphery and the hole wall of the upward hole, so as to achieve tight contact between the sealing plug 601 and the upward hole 201.

[0035] In this embodiment, the pipeline 500 uses a grouting rigid pipe 501. The grouting rigid pipe 501 passes through and is fixedly connected to the sealing plug 601. The sealing plug is inserted into the upward hole using the grouting rigid pipe. The grouting rigid pipe 501 can be a metal pipe or other rigid pipe with high rigidity. The pipe body and the sealing plug 601 are fixedly assembled by adhesive bonding or axial locking connectors. The grouting rigid pipe 501 and the sealing plug 601 form an integrally connected rigid structure. The sealing plug 601, inserted into the upward hole 201, can be pushed to the bottom position of the upward hole through the grouting rigid pipe 501. The inside of the grouting rigid pipe 501 also serves as a passage for injecting the rock-based adhesive.

[0036] In order to push the sealing plug 601 to the bottom of the upward hole 201 and maintain its connection with the rock-based adhesive pressure device outside the hole, the length of the grouting rigid pipe 501 generally needs to exceed the depth of the upward hole 201. For convenient transportation and installation, the grouting rigid pipe 501 can be made of multiple sections of spliced ​​pipe body. One section of the pipe body is fixedly connected to the sealing plug 601, and the remaining sections of the pipe body are spliced ​​together by threads or pipe joints to form grouting rigid pipes 501 of different lengths to adapt to upward holes of different depths.

[0037] In this embodiment, after the injection of the rock-based adhesive is completed, the sealing plug 601 is pulled out from the upward hole 201 through the grouting rigid pipe 501, and the crack 301 in the goaf filling body 300 repaired through the upward hole is as follows: Figure 3 As shown in the image.

[0038] Example 2

[0039] This embodiment provides another specific implementation scheme of the present invention for repairing and reinforcing goaf filling bodies in upward-drilled holes. The arrangement of its three components—rock-based adhesive pressure device 400, pipeline 500, and bottom hole seal 600—in the mining area is as follows: Figure 1 As shown. The difference is that in this embodiment, the bottom seal 600 disposed within the upward hole 201 uses a sealing airbag 602, as shown. Figure 4 , Figure 5 and Figure 6 As shown, the sealing airbag 602 has an annular cavity connected to an inflation tube. The annular cavity is inflated by the inflation tube. The annular cavity has a central outer channel formed by the airbag walls. A pipe 500 passes through this central outer channel of the sealing airbag 602, with its two ends respectively connected to the sealed space formed at the bottom of the upward-facing hole and the rock-based adhesive pressure device 400 outside the upward-facing hole. The internal cavity of the sealing airbag 602 is connected to the inflation device outside the hole via the inflation tube for inflation. After inflation, the outer peripheral wall of the sealing airbag 602 is pressed tightly against the hole wall, and the inner peripheral wall presses against the central outer channel and pipe 500, creating a tight contact. Figure 5 As shown, a seal is maintained between the sealing airbag and the borehole wall, and between the sealing airbag and the pipeline, forming a sealed space at the bottom of the borehole. Then, the rock-based adhesive is injected into the sealed space at the bottom of the borehole 201 through the pipeline 500 via the rock-based adhesive pressure device 400 to repair and reinforce the fractures in the goaf filling body.

[0040] In this embodiment, the pipeline 500 includes a grouting hose 502 and a grouting insertion tube 503. The grouting insertion tube 503 is a rigid tube that is inserted into and passes through the outer channel of the central airbag of the sealing airbag 602. The two ends of the tube are open and connected to both sides of the sealing airbag. The rigid grouting insertion tube 503 can ensure that the sealing airbag will not crush the pipeline through which the rock-based adhesive passes, so that the injection channel of the rock-based adhesive remains continuous. At the same time, the squeezing action after the sealing airbag is inflated can keep the grouting insertion tube 503 fixedly inserted in the outer channel of the central airbag. The end of the grouting insertion tube 503 near the opening of the upward hole is connected to the grouting hose 502 and extends through the grouting hose 502 to the rock-based adhesive pressure device 400 outside the upward hole, forming a passage for the rock-based adhesive to be injected into the sealed space at the bottom of the upward hole.

[0041] To ensure the grouting tube 503 is reliably inserted into the central airbag outer channel of the sealing airbag 602, this embodiment provides a compression sealing tube 603 in the central airbag outer channel of the sealing airbag 602. The compression sealing tube 603 has an axially penetrating slit at its center. The grouting tube 503 is inserted into and penetrates this slit, expanding to form the cavity of the compression sealing tube 603. Figure 4 and Figure 5 As shown. Both the sealing airbag 602 and the compression sealing tube 603 are made of elastic rubber and are fixedly connected to the outer wall of the outer channel of the central airbag of the sealing airbag 602. The inner wall of the compression sealing tube 603 maintains elastic compression against the outer wall of the grouting insertion tube 503, thereby achieving a seal at the contact surface. Even when the sealing airbag 602 is not inflated, the compression sealing tube 603 can reliably keep the grouting insertion tube 503 inserted into the outer channel of the central airbag.

[0042] The grouting tube 503 is made of metal or other rigid material. The friction between the grouting tube 503 and the compression sealing tube 603 is less than the friction between the outer wall of the sealing airbag 602 and the upper hole wall. The grouting tube 503 can be pulled out of the compression sealing tube 603 by pulling it with the grouting hose 502. After the grouting tube 503 is removed, the expanded cavity of the compression sealing tube 603 returns to a closed gap. Figure 6 As shown, it is still able to maintain the closure of the sealed space at the bottom of the hole after the rock-based adhesive is injected.

[0043] This embodiment employs the aforementioned structure of the sealing airbag 602 and grouting pipe 503, enabling the separability of the bottom hole seal 600 and the pipeline. After injecting the bedrock adhesive into the fractures 301 within the goaf filling body, the sealing airbag 602 can be retained at the bottom of the borehole as a buffer protection structure against subsequent mining blasting of the goaf filling body. Figure 6 As shown in the image.

[0044] Furthermore, the inflation tube for inflating the sealing airbag 602 is also detachable from the sealing airbag. The sealing airbag 602 has an inflation port with a one-way inflation valve 605. The inflation tube is connected to the inflation port and includes an inflation pin 504 and an inflation hose 505. The inflation pin 504 is inserted into the inflation port of the sealing airbag 602 and extends through the inflation hose 505 to the inflation device outside the upward hole. The configuration of the inflation pin 504 and the one-way inflation valve 605 is the same as that of the inflator nozzle for a ball. The specific structure will be described in detail here. By pulling the inflation pin 504 through the inflation hose 505, the inflation pin 504 can be pulled out from the inflation port of the sealing airbag 602. After being separated from the inflation tube, the sealing airbag 602 remains in an inflated state under the action of the one-way inflation valve 605, so that the sealing airbag 602 remains in an inflated state at the bottom of the upward hole 201.

[0045] In order to facilitate the smooth insertion of the flexible sealing airbag 602 into the upward hole, this embodiment provides an annular pad 604 on the side of the sealing airbag 602 near the opening of the upward hole. The outer diameter of the pad 604 is smaller than the diameter of the upward hole, and the pad 604 facilitates the pushing of the sealing airbag into the upward hole by a long rod. The rigid pad 604 provides a rigid working surface on one side of the sealing airbag 602. When the sealing airbag 602 is placed into the upward hole, in order to facilitate the smooth entry of the sealing airbag 602 into the upward hole, a small amount of gas is first injected into the sealing airbag 602, without fully inflating the sealing airbag. At this time, the annular outer circumference of the sealing airbag is smaller than the diameter of the upward hole 201. The sealing airbag 602 is pushed into the upward hole 201 by pushing the pad 604 with a long rod, avoiding the long rod directly pushing the airbag wall, which would cause changes in the posture of the airbag and damage to the airbag. After the sealing airbag 602 is pushed to the bottom of the upward hole 201, the sealing airbag 602 is fully inflated and expanded through the inflation tube until it is pressed tightly against the wall of the upward hole, thus fixing the sealing airbag 602 at the bottom of the upward hole.

[0046] In Examples 1 and 2, the rock-based adhesive is preferably a foamed adhesive slurry, such as polyurethane foam. Although the fluidity of this foamed adhesive slurry is not as good as that of the penetrating water-based adhesive slurry, its lower fluidity is more suitable for the repair and reinforcement of the up-hole goaf filling body in this invention.

[0047] In this document, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of clarifying the technical solution and for the convenience of description, and therefore should not be construed as limiting the present utility model.

[0048] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0049] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A device for repairing and reinforcing goaf filling bodies in upward-drilled boreholes, characterized in that: The system includes a rock-based adhesive pressure device (400), a pipeline (500), and a bottom hole seal (600). The bottom hole seal (600) is installed in an upward hole (201) drilled from the bottom pillar ore body into the goaf filling body, and is in close contact with the hole wall of the upward hole (201), forming a sealed space at the bottom of the upward hole (201). The bottom of the upward hole (201) is connected to at least one fracture in the goaf filling body. One end of the pipeline (500) is connected to the rock-based adhesive pressure device (400) outside the upward hole, and the other end passes through the bottom hole seal (600) inside the upward hole and connects to the sealed space at the bottom of the upward hole.

2. The device for repairing and reinforcing goaf filling bodies in upward drilling as described in claim 1, characterized in that: The bottom sealing element (600) is a solid sealing plug (601), and the outer periphery of the sealing plug (601) is tightly fitted with the wall of the upward hole.

3. The device for repairing and reinforcing goaf filling bodies in upward drilling according to claim 2, characterized in that: The pipeline (500) adopts a grouting rigid pipe (501), which passes through the sealing plug (601) and is fixedly connected to the sealing plug (601).

4. The device for repairing and reinforcing goaf filling bodies in upward drilling according to claim 3, characterized in that: The grouting rigid pipe (501) adopts a multi-segment spliced ​​pipe body.

5. The device for repairing and reinforcing goaf filling bodies in upward drilling according to claim 1, characterized in that: The bottom sealing element (600) adopts a sealing airbag (602), which has an annular cavity for connecting an inflation tube. The pipeline (500) passes through the outer channel of the central airbag of the sealing airbag and connects to the bottom of the upward hole and the rock-based adhesive pressure device. After inflation, the outer peripheral wall of the sealing airbag (602) is pressed against the hole wall of the upward hole, and the inner peripheral wall squeezes the outer channel of the central airbag and the pipeline (500) to press against each other.

6. The device for repairing and reinforcing goaf filling bodies in upward drilling according to claim 5, characterized in that: The pipeline (500) includes a grouting hose (502) and a rigid grouting insert (503). The grouting insert (503) is inserted into the outer channel of the central air bladder of the sealing air bladder (602) and connects the two sides of the sealing air bladder. The grouting hose (502) and the grouting insert (503) are connected to the side of the grouting insert (503) near the opening of the upward hole and extend to connect to the rock-based adhesive pressure device outside the upward hole.

7. The device for repairing and reinforcing goaf filling bodies in upward drilling according to claim 6, characterized in that: The central airbag of the sealing airbag (602) is provided with a compression sealing tube (603) in the outer channel of the airbag. The compression sealing tube (603) has an axially penetrating slit in the center. The grouting tube (503) is inserted into and penetrates the slit to form the cavity of the compression sealing tube (603).

8. The device for repairing and reinforcing goaf filling bodies in upward drilling according to claim 5, characterized in that: The sealing airbag (602) has an inflation port with a one-way inflation valve (605), and the inflation tube is connected to the inflation port.

9. The device for repairing and reinforcing goaf filling bodies in upward drilling according to claim 8, characterized in that: The inflation tube includes an inflation pin (504) and an inflation hose (505). The inflation pin (504) is inserted into the inflation port of the sealed airbag (602) and extends to the inflation device outside the upper hole through the inflation hose (505).

10. The goaf filling and reinforcement device for upward drilling according to any one of claims 5-9, characterized in that: The sealing airbag (602) has an annular pad (604) on the side near the opening of the upward hole, and the outer diameter of the pad (604) is smaller than the diameter of the upward hole.

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