A recyclable integrated long-hole passage repair structure and application method

Abstract

The application discloses a recyclable integrated narrow-hole channel repairing structure, which comprises an open-hole spiral sleeve and a recyclable grouting device, the recyclable grouting device is movably coaxially embedded in the open-hole spiral sleeve; a blocking bag is detachably arranged on the top of the open-hole spiral sleeve, a plurality of expansion particles are releasably wrapped in the blocking bag, and the outer surface of the sidewall of the open-hole spiral sleeve is uniformly bonded with the expansion particles; the recyclable grouting device comprises a tube, an outer tube is movably and concentrically sleeved on the outer side of the tube, a detachable detachable bottom device is detachably arranged on the bottom of the tube, and the detachable bottom device is linked and matched with the outer tube, and the detachable bottom device is provided with expansion particles; a grouting pipeline is movably and concentrically embedded in the tube, and a grouting support which can be opened and closed in the radial direction is hinged to the end of the grouting pipeline. The recyclable grouting device can be recycled, and the narrow-hole channel repairing is facilitated.

Description

Technical Field

[0001] This invention relates to the field of hole channel repair technology, and in particular to a recyclable integrated narrow hole channel repair structure and its application method. Background Technology

[0002] Engineering construction often encounters various complex geological problems. For example, in mountainous areas, highways, and hydropower projects, narrow passages can easily form due to natural or man-made excavation collapses, sometimes accompanied by adverse geological phenomena such as groundwater backflow and soil fracturing. To ensure the smooth progress of the project, these passages need to be sealed. However, sealing these passages becomes quite difficult when the path is narrow and the structure and connecting cavities are unknown.

[0003] The existing hole sealing structures and construction methods have the following defects:

[0004] 1. Prior art document CN106988436A discloses a method for sealing reserved holes, with the protected claim being "sealing reserved holes by using precast slabs as bottom formwork without the need for a dedicated bottom formwork, and the precast slabs being part of the structure and not requiring removal. This method saves the process of erecting and dismantling formwork, improves construction efficiency, and reduces construction costs." However, the structure required for sealing the outer surface of the passage is large, and the flat construction surface of the concrete reserved hole cannot be flexibly applied to a wide range of soil and rock hole passages.

[0005] 2. Prior art document CN111648619A discloses a hole sealing device and a hole sealing equipment. The protected claim "includes a bracket; a grout supply assembly installed on the bracket; a rigid grout delivery pipe installed on the bracket, one end of the rigid grout delivery pipe being connected to the grout supply assembly, and the other end being provided with a steering structure; a grouting plate, one end of which is rotatably connected to the steering structure, and the other end being able to abut against the wall surface, the grouting plate being provided with grouting holes, and the grouting holes being connected to the rigid grout delivery pipe. Due to the high durability of the rigid grout delivery pipe, the overall lifespan of the hole sealing device can be extended. The steering structure allows the grouting plate to automatically adjust itself according to different construction conditions to completely fit against the wall surface, improving grouting accuracy." However, it focuses on improving the fit between the grouting plate and the wall surface. In actual geotechnical engineering, the hole surface is generally narrow and irregular, and the rigid grout delivery pipe has high requirements for the construction of the channel.

[0006] 3. Prior art document CN113818833A discloses a method for grouting and sealing small coal pillars for fire prevention and extinguishing. The protected claims include: determining the location of the grouting borehole; grouting and filling cracks; determining the spatial diffusion range and path of the grout; continuous observation: reserving observation holes to examine coal body temperature and air leakage, and installing gas observation tubes, thermistors, and temperature measuring wires within the observation holes. This invention, through grouting in boreholes of coal pillars, can seal internal and surface cracks in the coal pillars. This method reduces the porosity and permeability of coal pillars, thereby achieving coal and rock fissure sealing, cooling, and air leakage suppression. It also enables synergistic control of air leakage and spontaneous combustion, ensuring the safety of small coal pillar mining faces. By controlling the flow path of grout within the coal pillar fissure channels, the flow range of the grout can be controlled, and the grouting material can be fully utilized. This improves its fire prevention, extinguishing, and leak-sealing performance while reducing fire prevention and extinguishing costs. However, compared to traditional grouting methods, it focuses more on the observation and monitoring of the pore channels, and its beneficial changes to the grouting sealing method are relatively weak.

[0007] Current methods for sealing boreholes typically involve manually inserting grouting pipes directly into the shallow surface of the borehole to inject grout. This is not only time-consuming and labor-intensive, but the effectiveness is also limited by the worker's skill and physical strength. This method is also prone to grout diffusion, potentially contaminating unexplored cavities such as groundwater behind the borehole. Furthermore, in complex boreholes, the grout tends to accumulate in large quantities at the shallow level, resulting in unsatisfactory sealing. Therefore, there is an urgent need to develop a self-sealing, recyclable grouting structure and construction method for sealing narrow, elongated borehole sections to address these problems. Summary of the Invention

[0008] This invention provides a recyclable integrated narrow hole channel repair structure and application method, aiming to solve the problems of existing hole filling devices being unable to be flexibly used for a wide range of soil and rock holes, having low applicability to holes with irregular surfaces or even containing deeply buried cavities, and being ineffective for complex hole channels and varying curvatures in civil engineering.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a recyclable integrated narrow and elongated hole channel repair structure, including an open spiral sleeve and a recyclable grouting device, wherein the recyclable grouting device is movably and coaxially embedded in the open spiral sleeve;

[0010] The top of the perforated spiral sleeve is detachably provided with a sealing bag, and the sealing bag contains several expansion particles that can be released inside. Several expansion particles are uniformly adhered to the outer surface of the side wall of the perforated spiral sleeve.

[0011] The recyclable grouting device includes a tube, with a movable outer cylinder movably sleeved on the outside of the tube. The bottom of the tube is detachably provided with an openable and removable bottom sealing device, which is linked and cooperates with the movable outer cylinder. The removable bottom sealing device is provided with expansion particles.

[0012] The grouting pipe is movably embedded concentrically and coaxially inside the tube. The end of the grouting pipe is hinged to a grouting bracket that opens and closes in the radial direction. The outer wall of the movable outer cylinder is fitted with a ring. The ring is connected to the grouting bracket through an elastic connecting rod to form a telescopic expansion fit. The grouting bracket is provided with several grouting holes, and all the grouting holes are connected to the grouting pipe to form a grouting fit.

[0013] Preferably, the bottom of the sealing bag is a circular plastic flexible plate, which is coaxially snapped into the top of the side wall of the perforated spiral sleeve. The top of the plastic flexible plate is provided with a water-soluble film, and the top of the water-soluble film is provided with an opening. A rubber band is provided at the opening, and the opening is bound and fixed to the top of the perforated spiral sleeve through the rubber band. Several expanding particles are filled in the water-soluble film and the perforated spiral sleeve.

[0014] Alternatively, the sidewall of the perforated spiral sleeve is provided with several adhesive layers, which are evenly distributed, and the expanding particles are bonded to the sidewall of the perforated spiral sleeve through the adhesive.

[0015] Preferably, the removable bottom sealing device includes a fitting bracket, which includes a limiting ring and a fitting rod. The fitting rod passes through the limiting ring concentrically and coaxially. The bottom of the limiting ring is provided with an umbrella-shaped support bracket. The frame of the umbrella-shaped support bracket and the limiting ring are hinged together by a hinge rod to form an open fit. The end of the fitting rod is connected to the top of the umbrella-shaped support bracket to form a linkage fit. The other end of the fitting rod is detachably snapped into place with a bottleneck-shaped hole at the bottom of the tube.

[0016] More preferably, the opening of the umbrella-shaped support bracket faces the bottom of the tube, and a plastic film is provided between the frames of the umbrella-shaped support bracket, with several expansion particles glued to the plastic film.

[0017] Furthermore, the side walls of both the pipe and the movable outer cylinder are provided with several strip-shaped openings, and the several strip-shaped openings on the side walls of both the pipe and the movable outer cylinder correspond one-to-one with the grouting support.

[0018] During installation, the grouting support passes through the pipe and movable outer cylinder sequentially along the corresponding strip opening and is folded and stored inside the perforated spiral sleeve.

[0019] Furthermore, the bottom of the perforated spiral sleeve is provided with an arc-shaped outlet. During installation, the grouting bracket is folded and stored inside the arc-shaped outlet, and the inner wall of the arc-shaped outlet is coated with Vaseline to lubricate and cooperate with the side wall of the grouting bracket.

[0020] Specifically, the grouting bracket is hinged to the end of the grouting pipe in a radially fan-shaped opening and closing manner through a hinge member. The grouting bracket is embedded with a plastic hose, and all the grouting holes on the grouting bracket are connected to the plastic hose. All the grouting holes are sealed and connected to the outlet of the grouting pipe through the corresponding plastic hose.

[0021] More specifically, the grouting pipe is equipped with a vibration motor and a battery cable, and the vibration motor and the battery cable form a power supply connection, and the vibration motor and the external control switch form a linkage connection.

[0022] A method for applying a recyclable, integrated, narrow-aperture channel repair structure includes the following steps:

[0023] Step 1: Identify the narrow, unexplored hole that needs to be grouted and seal it, and remove the debris around the hole opening;

[0024] Step 2: Insert the recyclable grouting device from the upper inlet of the perforated spiral sleeve until the bottom of the tube is flush with the bottom of the arc-shaped outlet. Then insert the ball at the end of the fitting rod of the fitting bracket into the small bottleneck-shaped hole at the bottom of the tube through the bottom of the movable outer cylinder.

[0025] Step 3: Slowly insert the perforated spiral sleeve into the hole that needs grouting, and continuously adjust the direction of movement of the perforated spiral sleeve until it reaches the pre-grouting point;

[0026] Step 4: Hold the tube and push it forward, and push the movable outer tube forward at a faster speed. The movable outer tube will drive the grouting support from retracting to gradually unfolding. When you no longer feel obvious resistance when pushing the movable outer tube, it means that the grouting support has extended out of the open spiral sleeve and unfolded. At the same time, the umbrella-shaped support bracket is in contact with the movable outer tube and is also pushed to open in a cone shape together with the grouting support.

[0027] Step 5: After the grouting support is fully deployed, the grout is injected. The grout is sprayed from the grouting hole through the grouting pipe onto the spiral hose and the inner wall of the hole. Some of the grout flows onto the opened umbrella-shaped support under gravity. At this time, the expansion particles come into contact with the grout and expand and harden. The umbrella-shaped support provides initial support for the expansion particles attached to it. After it is fully hardened, they work together to form the grouting base plate. The expansion particles attached to the spiral hose also expand and harden to reduce the gap in the sealing section. As the grouting proceeds, the grout fills the channel upward to contact the plastic flexible plate and comes into contact with the water-soluble film of the sealing bag between the plastic flexible plate and the hole wall. The water-soluble film starts to dissolve from the edge. The internal expansion particles are exposed in the gap and expand and harden when they come into contact with the grout, blocking the gap between the plastic flexible plate and the hole wall. Finally, the two work together to seal the top of the sealing end and stop the grouting.

[0028] Step 6: After grouting is completed, push the movable outer cylinder backward until the interlocking bracket is pushed back and the grouting bracket is retracted. When you feel a sharp drop in resistance, it means that the bottom of the interlocking bracket pops out a bottleneck-shaped hole, which allows the removable bottom sealing device to detach.

[0029] Step 7: Turn on the vibration motor. The vibration is transmitted to the perforated spiral sleeve through contact. The vibration causes the slurry adhering to the inner wall of the perforated spiral sleeve to fall off, preventing the slurry from sticking and clogging during the recycling process, and stirring and agitating the external slurry and expanding particles.

[0030] Step 8: Grouting is completed. At the same time, pull out the tube and the movable outer cylinder to retrieve the recyclable grouting device from the perforated spiral sleeve. The perforated spiral sleeve and the removable bottom sealing device remain in the hole channel.

[0031] The beneficial effects of this invention are:

[0032] 1. This invention utilizes a sealing bag, a spiral flexible hose, and a removable bottom sealing device combined with expanding particles. Firstly, the spiral structure of the outer hose provides more adhesion points for the grout, reducing voids in the pore channels after initial expansion and hardening, thus shortening the time required for the grout to solidify and seal the pores. Secondly, during grouting, the removable bottom sealing device, along with the expanding particles adhering to it, works together to form a grouting base plate at the bottom, preventing grout loss or contamination of unknown cavities such as groundwater, thereby enhancing the grouting and sealing effect. The top sealing bag, through the combination of a water-soluble membrane and a flexible plastic sheet, automatically functions as a grouting cap in traditional grouting methods after the grout fills the sealing section, solving the problem of grout backflow caused by the inability to promptly recover the grout after grouting.

[0033] 2. This device is designed with a recyclable grouting unit. The recyclable grouting unit utilizes a mechanical structure combining a movable outer cylinder with a grouting support and an umbrella-shaped support. The movable support controls the expansion and contraction of the grouting support, while the umbrella-shaped support unfolds and detaches. This allows the originally bulky grouting unit to be placed into narrow holes for direct grouting. Traditional grouting pipes often cannot reach into the hole channel, limiting grouting to a shallow layer in narrow passages. Grouting inside the hole channel ensures more even grout distribution and fuller filling, while also preventing shallow grout from clogging the hole channel and hindering subsequent grouting. After grouting, the most expensive main grouting unit can be recovered and reused, improving economic efficiency.

[0034] 3. Compared to traditional grouting sealing methods that require carrying mechanical equipment such as vibratory rods and long grouting pipes, the recyclable grouting section of this invention integrates a battery pack and a vibration motor—two small pieces of equipment—with traditional grouting pads and caps. This makes construction and operation simple and quick, and the entire device is compact and portable. After grouting, controlling the rotation of the grouting support and the use of the vibration motor not only allows the grout sprayed inside the device to fall off for easy recovery but also ensures that the outer anchoring grout is vibrated and compacted, enhancing the sealing effect.

[0035] 4. Compared to traditional direct grouting methods for sealing holes, this invention uses a perforated spiral sleeve to guide the grouting port into the hole, protecting the internal grouting device from wear. After grouting, the perforated spiral sleeve remains inside the hole as reinforcement, enhancing the stability and strength of the sealing. This device selects a section of the hole channel for sealing, unlike the traditional method of directly inserting the grouting pipe into the hole channel. Firstly, it avoids grouting the entire channel, reducing the space required for sealing and improving efficiency. Secondly, the device carries expanding particles into the channel, and the grout causes these particles to expand and harden, accelerating the sealing time and increasing the sealing strength. Furthermore, it avoids potential blockage of the grouting pipe due to excessive particle content in the grout. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a recyclable grouting structure;

[0037] Figure 2 This is a schematic diagram of the perforated spiral sleeve structure;

[0038] Figure 3 A schematic diagram of a self-sealing bottom recyclable grouting structure for sealing narrow and elongated holes;

[0039] Figure 4 Each connection structure is shown in an independent schematic diagram;

[0040] Figure 5 This is a schematic diagram of the sealing bag structure;

[0041] Figure 6 Schematic diagram of movable outer cylinder, pipe cylinder, and grouting support;

[0042] Figure 7 A schematic diagram of the movable outer cylinder, pipe, grouting support, and fitting support structure;

[0043] Figure 8 A schematic diagram showing the connection between the movable outer cylinder, the tube, the fitting bracket, and the umbrella-shaped support bracket;

[0044] Figure 9 A schematic diagram of the umbrella-shaped support bracket and the bottom structure of the tube;

[0045] Figure 10 A schematic diagram of the construction process for the penetration of the hole into the overall structure;

[0046] Figure 11 This is a schematic diagram illustrating the construction process of grouting and sealing the overall structure within the cavity channels;

[0047] Figure 12 This is a schematic diagram showing the effect after the fitting bracket is disassembled;

[0048] Figure 13This is a schematic diagram showing the effect after grouting and sealing is completed;

[0049] In the diagram: 1. Perforated spiral sleeve; 1.1. Sealing bag; 1.2. Spiral hose; 1.3. Arc-shaped outlet; 1.4. Flexible plastic sheet; 1.5. Water-soluble film; 1.6. Expanding granules;

[0050] 2. Recyclable grouting device; 2.1 Removable bottom sealing device; 2.2 Pipe; 2.3 Movable outer cylinder; 2.4 Grouting bracket; 2.5 Umbrella-shaped support bracket; 2.6 Fitting bracket; 2.7 Plastic film; 2.8 Grouting pipe; 2.9 Vibration motor; 2.10 Battery cable group; 2.11 Plastic hose; 2.12 Elastic connecting rod; 2.13 Grouting hole. Detailed Implementation

[0051] The embodiments will be further described below with reference to the accompanying drawings.

[0052] like Figures 1-9 As shown in the preferred embodiment 1, a recyclable integrated narrow hole channel repair structure includes an open spiral sleeve 1 and a recyclable grouting device 2, wherein the recyclable grouting device 2 is movably coaxially embedded in the open spiral sleeve 1.

[0053] The top of the perforated spiral sleeve 1 is detachably provided with a sealing bag 1.1, and the sealing bag 1.1 contains a number of expansion particles 1.6 that can be released inside. The outer surface of the side wall of the perforated spiral sleeve 1 is uniformly adhered with a number of expansion particles 1.6.

[0054] The recyclable grouting device 2 includes a tube 2.2, and a movable outer tube 2.3 is movably sleeved on the outside of the tube 2.2 in a coaxial manner. The bottom of the tube 2.2 is detachably provided with an openable and detachable bottom sealing device 2.1, and the detachable bottom sealing device 2.1 is linked with the movable outer tube 2.3. The detachable bottom sealing device 2.1 is provided with expansion particles 1.6.

[0055] A grouting pipe 2.8 is concentrically and coaxially embedded inside the tube 2.2. The end of the grouting pipe 2.8 is hinged to a grouting bracket 2.4 that opens and closes in the radial direction. A ring is fitted on the outer wall of the movable outer cylinder 2.3. The ring is connected to the grouting bracket 2.4 via an elastic connecting rod 2.12 to form a telescopic expansion fit. The grouting bracket 2.4 is provided with a plurality of grouting holes 2.13, and all the grouting holes 2.13 are connected to the grouting pipe 2.8 to form a grouting fit.

[0056] In a preferred embodiment 2, the bottom of the sealing bag 1.1 is a circular plastic flexible plate 1.4. The plastic flexible plate 1.4 is coaxially snapped into the top of the side wall of the perforated spiral sleeve 1. The top of the plastic flexible plate 1.4 is provided with a water-soluble film 1.5. The top of the water-soluble film 1.5 is provided with an opening. A rubber band is provided at the opening, and the opening is bound and fixed to the top opening of the perforated spiral sleeve 1 through the rubber band. Several expanding particles 1.6 are filled in the water-soluble film 1.5 and the perforated spiral sleeve 1.

[0057] The sealing bag 1.1 is wrapped with a water-soluble film 1.5 and has a plastic soft board 1.4 at the bottom. It is generally circular and tied to the top of the perforated spiral sleeve 1 with a rubber band. It contains expanding particles 1.6 inside. The water-soluble film 1.5 dissolves when it comes into contact with slurry.

[0058] The outer surface of the spiral hose 1.2 is coated with glue and the surface is adhered with expansion particles 1.6. The upper and lower ends are tied and fixed with rubber bands. The expansion particles 1.6 expand and harden when they come into contact with the grouting slurry.

[0059] As a preferred embodiment 3, the sidewall of the perforated spiral sleeve 1 is provided with several adhesive layers, which are evenly distributed, and the expanding particles 1.6 are bonded to the sidewall of the perforated spiral sleeve 1 through the adhesive.

[0060] As a preferred embodiment 4, the removable bottom sealing device 2.1 includes a fitting bracket 2.6, which includes a limiting ring and a fitting rod. The fitting rod passes through the limiting ring concentrically and coaxially. The bottom of the limiting ring is provided with an umbrella-shaped support bracket 2.5. The frame of the umbrella-shaped support bracket 2.5 is hinged to the limiting ring through a hinge rod to form an open fit. The end of the fitting rod is connected to the top of the umbrella-shaped support bracket 2.5 to form a linkage fit. The other end of the fitting rod is detachably snapped into place with a bottleneck-shaped hole provided at the bottom of the tube 2.2.

[0061] As a preferred embodiment 5, the opening of the umbrella-shaped support bracket 2.5 faces the bottom of the tube 2.2, and a plastic film 2.7 is provided between the frames of the umbrella-shaped support bracket 2.5. Several expansion particles 1.6 are glued to the plastic film 2.7.

[0062] The removable bottom sealing device 2.1 consists of an umbrella-shaped support bracket 2.5 and a fitting bracket 2.6. The middle part of the umbrella-shaped support bracket 2.5 is fixedly connected to the fitting bracket 2.6, which is connected to the tube 2.2 through a bottleneck-shaped small hole at the bottom. The top of the umbrella-shaped support bracket 2.5 is conical and coated with Vaseline for lubrication, allowing the entire device to extend along the channel. A plastic film 2.7 is placed between the brackets, and the movable outer cylinder 2.3 is tightly attached to the umbrella-shaped support bracket 2.5. Pushing the movable outer cylinder 2.3 simultaneously fixes the fitting bracket 2.6, and the umbrella-shaped support bracket 2.5 gradually opens and covers the hole channel under the contact and push of the movable outer cylinder 2.3. During grouting, the expanding particles 1.6 attached to the plastic film 2.7 with glue expand and harden upon contact with the grout, and together with the umbrella-shaped support, they fill and seal the sealing section. After grouting is completed, the removable bottom sealing device 2.1 can be removed by continuing to push the tube 2.2 until the fitting bracket 2.6 pops out and connects to the bottom of the tube 2.2.

[0063] As a preferred embodiment 6, the side walls of both the pipe 2.2 and the movable outer cylinder 2.3 are provided with several strip-shaped openings, and the several strip-shaped openings on the side walls of the pipe 2.2 and the movable outer cylinder 2.3 correspond one-to-one with the grouting support 2.4;

[0064] During installation, the grouting bracket 2.4 passes through the pipe 2.2 and the movable outer cylinder 2.3 sequentially along the corresponding strip opening and is folded and stored inside the perforated spiral sleeve 1.

[0065] As a preferred embodiment 7, the bottom of the perforated spiral sleeve 1 is provided with an arc-shaped outlet 1.3. During installation, the grouting bracket 2.4 is folded and stored inside the arc-shaped outlet 1.3, and the inner wall of the arc-shaped outlet 1.3 is coated with Vaseline to lubricate and cooperate with the side wall of the grouting bracket 2.4.

[0066] In a preferred embodiment 8, the grouting bracket 2.4 is hinged to the end of the grouting pipe 2.8 in a radially fan-shaped opening and closing manner via a hinge. The grouting bracket 2.4 is embedded with a plastic hose 2.11, and all the grouting holes 2.13 on the grouting bracket 2.4 are connected to the plastic hose 2.11. All the grouting holes 2.13 are sealed and connected to the outlet of the grouting pipe 2.8 via the corresponding plastic hose 2.11.

[0067] The annular part of the movable outer cylinder 2.3 is connected to the joint of the grouting bracket 2.4 by an elastic connecting rod 2.12, and its bottom is in contact with the umbrella-shaped support bracket 2.5. When inserted into the hole, the grouting bracket 2.4 retracts into the perforated spiral sleeve 1, leaving only the retracted umbrella-shaped support bracket 2.5 exposed at the bottom. After reaching the preset sealing position, the tube 2.2 is grasped and the movable outer cylinder 2.3 is pushed forward. The movable outer cylinder 2.3 drives the grouting bracket 2.4 to protrude from the perforated spiral sleeve 1 and gradually open into a cone shape for grouting.

[0068] As a preferred embodiment 9, the grouting pipe 2.8 is equipped with a vibration motor 2.9 and a battery cable group 2.10, and the vibration motor 2.9 and the battery cable group 2.10 form a power supply cooperation. The vibration motor 2.9 and the external control switch form a linkage cooperation, and the start and stop are controlled externally through a wireless switch.

[0069] like Figures 10-12 As shown in the preferred embodiment 10, the application method of the above-mentioned recyclable integrated narrow-aperture channel repair structure includes the following steps:

[0070] Step 1: Identify the narrow, unexplored hole that needs to be grouted and seal it, and remove the debris around the hole opening;

[0071] Step 2: Insert the recyclable grouting device 2 into the upper inlet of the perforated spiral sleeve 1 until the bottom of the tube 2.2 is flush with the bottom of the arc-shaped outlet 1.3. Then insert the ball at the end of the fitting rod of the fitting bracket 2.6 into the small bottleneck-shaped hole at the bottom center of the tube 2.2 through the bottom of the movable outer cylinder 2.3.

[0072] Step 3: Slowly insert the perforated spiral sleeve 1 into the hole that needs grouting, and continuously adjust the moving direction of the perforated spiral sleeve 1 until it reaches the pre-grouting point;

[0073] Step 4: Hold the tube 2.2 and push it forward, and push the movable outer tube 2.3 forward at an even faster speed. The movable outer tube 2.3 drives the grouting support 2.4 from retracting to gradually unfolding. When you no longer feel obvious resistance when pushing the movable outer tube 2.3, it means that the grouting support 2.4 has extended out of the open spiral sleeve 1 and unfolded. At the same time, the umbrella-shaped support 2.5 comes into contact with the movable outer tube 2.3 and is also pushed to open in a cone shape together with the grouting support 2.4.

[0074] Step 5: After the grouting support 2.4 is fully deployed, grout is injected. The grout is sprayed from the grouting hole 2.13 through the grouting pipe 2.8 onto the spiral hose 1.2 and the inner wall of the hole. Some of the grout flows onto the opened umbrella-shaped support 2.5 under gravity. At this time, the expanding particles 1.6 come into contact with the grout, expand, and harden. The umbrella-shaped support 2.5 provides initial support for the expanding particles 1.6 that adhere to it, and together they form the grouting base plate after complete hardening. The spiral hose 1. The expanding particles 1.6 adhering to .2 also expand and harden to reduce the gaps in the sealing section. As grouting proceeds, the grout fills the channel upwards to contact the plastic flexible plate 1.4, and contacts the water-soluble film 1.5 of the sealing bag 1.1 from the gap between the plastic flexible plate 1.4 and the hole wall. The water-soluble film 1.5 dissolves from the edge, and the internal expanding particles 1.6 are exposed in the gaps and expand and harden upon contact with the grout to block the gap between the plastic flexible plate 1.4 and the hole wall. Finally, the two work together to seal the top of the sealing end and stop the grouting.

[0075] Step 6: After grouting is completed, push the movable outer cylinder 2.3 backward until the interlocking bracket 2.6 is pushed so that the grouting bracket 2.4 retracts in the opposite direction. When you feel a sharp drop in resistance, it means that the bottom of the interlocking bracket 2.6 pops out a bottleneck-shaped hole, which allows the removable bottom sealing device 2.1 to detach.

[0076] Step 7: Turn on the vibration motor 2.9. The vibration is transmitted to the perforated spiral sleeve 1 through contact. The vibration causes the slurry adhering to the inner wall of the perforated spiral sleeve 1 to fall off, preventing the slurry from sticking and clogging during the recycling process, and stirring and agitating the external slurry and expanding particles 1.6.

[0077] Step 8: Grouting is completed. At the same time, pull out the tube 2.2 and the movable outer tube 2.3 to retrieve the recyclable grouting device 2 from the perforated spiral sleeve 1. The perforated spiral sleeve 1 and the removable bottom sealing device 2.1 remain in the hole channel.

Claims

1. A recyclable, integrated, narrow-aperture channel repair structure, characterized in that, It includes an open-hole spiral sleeve (1) and a recyclable grouting device (2), wherein the recyclable grouting device (2) is movably and coaxially embedded in the open-hole spiral sleeve (1); The top of the perforated spiral sleeve (1) is detachably provided with a sealing bag (1.1), and the sealing bag (1.1) contains a number of expansion particles (1.6) that can be released. The outer surface of the side wall of the perforated spiral sleeve (1) is uniformly adhered with a number of expansion particles (1.6). The recyclable grouting device (2) includes a pipe (2.2), a movable outer cylinder (2.3) is movably sleeved on the outside of the pipe (2.2) in a coaxial manner, and a removable bottom sealing device (2.1) is detachably provided at the bottom of the pipe (2.2), and the removable bottom sealing device (2.1) is linked with the movable outer cylinder (2.3). Expansion particles (1.6) are provided on the removable bottom sealing device (2.1). A grouting pipe (2.8) is concentrically and coaxially embedded inside the tube (2.2). The end of the grouting pipe (2.8) is hinged to a grouting bracket (2.4) that opens and closes in the radial direction. A ring is fitted on the outer wall of the movable outer tube (2.3). The ring is connected to the grouting bracket (2.4) via an elastic connecting rod (2.12) to form a telescopic expansion fit. The grouting bracket (2.4) is provided with several grouting holes (2.13), and all the grouting holes (2.13) are connected to the grouting pipe (2.8) to form a grouting fit. A plastic hose (2.11) is embedded inside the grouting bracket (2.4), and all the grouting holes (2.13) on the grouting bracket (2.4) are connected to the plastic hose (2.11). All the grouting holes (2.13) are connected to the outlet of the grouting pipe (2.8) via the corresponding plastic hose (2.11) to form a sealed connection fit. A vibration motor (2.9) is installed on the grouting pipe (2.8).

2. The recyclable integrated narrow-aperture channel repair structure according to claim 1, characterized in that, The bottom of the sealing bag (1.1) is a circular plastic soft plate (1.4). The plastic soft plate (1.4) is coaxially snapped into the top of the side wall of the perforated spiral sleeve (1). The top of the plastic soft plate (1.4) is provided with a water-soluble film (1.5). The top of the water-soluble film (1.5) is provided with an opening. A rubber band is provided at the opening. The opening is bound and fixed to the top of the perforated spiral sleeve (1) by the rubber band. Several expanding particles (1.6) are filled in the water-soluble film (1.5) and the perforated spiral sleeve (1).

3. The recyclable integrated narrow-aperture channel repair structure according to claim 2, characterized in that, The sidewall of the perforated spiral sleeve (1) is provided with several adhesive layers, which are evenly distributed, and the expanding particles (1.6) are bonded to the sidewall of the perforated spiral sleeve (1) through the adhesive.

4. The recyclable integrated narrow-aperture channel repair structure according to claim 1, characterized in that, The removable bottom sealing device (2.1) includes a fitting bracket (2.6), which includes a limiting ring and a fitting rod. The fitting rod passes through the limiting ring concentrically and coaxially. The bottom of the limiting ring is provided with an umbrella-shaped support bracket (2.5). The frame of the umbrella-shaped support bracket (2.5) and the limiting ring are hinged together by a hinge rod to form an open fit. The end of the fitting rod is connected to the top of the umbrella-shaped support bracket (2.5) to form a linkage fit. The other end of the fitting rod is detachably snapped into place with a bottleneck-shaped hole provided at the bottom of the tube (2.2).

5. The recyclable integrated narrow-aperture channel repair structure according to claim 4, characterized in that, The opening of the umbrella-shaped support bracket (2.5) faces the bottom of the tube (2.2), and a plastic film (2.7) is provided between the frames of the umbrella-shaped support bracket (2.5). Several expansion particles (1.6) are glued to the plastic film (2.7).

6. The recyclable integrated narrow-aperture channel repair structure according to claim 5, characterized in that, The side walls of the tube (2.2) and the movable outer tube (2.3) are provided with several strip-shaped openings, and the several strip-shaped openings on the side walls of the tube (2.2) and the movable outer tube (2.3) correspond one-to-one with the grouting support (2.4); During installation, the grouting bracket (2.4) passes through the pipe (2.2) and the movable outer cylinder (2.3) in sequence along the corresponding strip opening and is folded and stored in the perforated spiral sleeve (1).

7. The recyclable integrated narrow-aperture channel repair structure according to claim 6, characterized in that, The bottom of the perforated spiral sleeve (1) is provided with an arc-shaped outlet (1.3). During installation, the grouting bracket (2.4) is folded and stored in the arc-shaped outlet (1.3), and the inner wall of the arc-shaped outlet (1.3) is coated with Vaseline to lubricate the side wall of the grouting bracket (2.4).

8. The recyclable integrated narrow-aperture channel repair structure according to claim 7, characterized in that, The grouting support (2.4) forms a radially fan-shaped hinged connection with the end of the grouting pipe (2.8) through a hinged joint.

9. A recyclable integrated narrow-aperture channel repair structure according to claim 8, characterized in that, The grouting pipe (2.8) is equipped with a battery cable group (2.10), and the vibration motor (2.9) and the battery cable group (2.10) form a power supply cooperation. The vibration motor (2.9) and the external control switch form a linkage cooperation.

10. The application method of the recyclable integrated narrow-aperture channel repair structure according to any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1: Identify the narrow, unexplored hole that needs to be grouted and seal it, and remove the debris around the hole opening; Step 2: Insert the recyclable grouting device (2) into the bottom of the tube (2.2) from the upper inlet of the perforated spiral sleeve (1) until it is flush with the bottom of the arc-shaped outlet (1.3). Then insert the ball at the end of the fitting rod of the fitting bracket (2.6) into the small bottleneck-shaped hole at the bottom center of the tube (2.2) through the bottom of the movable outer cylinder (2.3). Step 3: Slowly insert the perforated spiral sleeve (1) into the hole that needs grouting, and continuously adjust the direction of movement of the perforated spiral sleeve (1) until it reaches the pre-grouting point; Step 4: Hold the tube (2.2) and push it forward, and push the movable outer tube (2.3) forward at a faster speed. The movable outer tube (2.3) drives the grouting support (2.4) from closing to gradually unfolding. When you no longer feel obvious resistance when pushing the movable outer tube (2.3), it means that the grouting support (2.4) has extended out of the open spiral sleeve (1) and unfolded. At the same time, the umbrella-shaped support support (2.5) comes into contact with the movable outer tube (2.3) and is also pushed to open in a cone shape together with the grouting support (2.4). Step 5: After the grouting support (2.4) is fully extended, the grout is injected. The grout is sprayed from the grouting hole (2.13) through the grouting pipe (2.8) onto the spiral hose (1.2) and the inner wall of the hole. Some of the grout flows onto the opened umbrella-shaped support (2.5) under the action of gravity. At this time, the expansion particles (1.6) come into contact with the grout and expand and harden. The umbrella-shaped support (2.5) provides initial support for the expansion particles (1.6) that are attached to it, and together they form the grouting base plate after complete hardening. The spiral hose (1.2) .2) The expanded particles (1.6) adhering to the surface also expand and harden to reduce the gap in the sealing section. As grouting proceeds, the grout fills the channel upward to contact the plastic flexible plate (1.4) and contacts the water-soluble film (1.5) of the sealing bag (1.1) between the plastic flexible plate (1.4) and the hole wall gap. The water-soluble film (1.5) dissolves from the edge, and the internal expanded particles (1.6) are exposed in the gap and expand and harden when they encounter the grout, blocking the gap between the plastic flexible plate (1.4) and the hole wall. Finally, the two work together to seal the top of the sealing end and stop the grouting. Step 6: After grouting is completed, push the movable outer cylinder (2.3) backward until the interlocking bracket (2.6) is pushed to make the grouting bracket (2.4) retract in the opposite direction. When you feel a sharp drop in resistance, it means that the bottom of the interlocking bracket (2.6) pops out a bottleneck-shaped hole, which allows the removable bottom sealing device (2.1) to detach. Step 7: Turn on the vibration motor (2.9). The vibration is transmitted to the perforated spiral sleeve (1) through contact. The vibration causes the slurry adhering to the inner wall of the perforated spiral sleeve (1) to fall off, preventing the slurry from sticking and clogging during the recycling process, and stirring and agitating the external slurry and expanding particles (1.6). Step 8: Grouting is completed. At the same time, pull out the tube (2.2) and the movable outer tube (2.3) to retrieve the recyclable grouting device (2) from the perforated spiral sleeve (1). The perforated spiral sleeve (1) and the removable bottom sealing device (2.1) remain in the hole channel.

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