Tunnel consolidation grouting equipment and grouting method thereof

Abstract

The invention belongs to the technical field of grouting equipment, and particularly relates to tunnel consolidation grouting equipment and a grouting method.The grouting equipment comprises an annular blocking plate, a plurality of fixing mechanisms are arranged on the annular blocking plate in the circumferential direction of a center hole at equal intervals, and the annular blocking plate is fixed to a grouting hole through the multiple fixing mechanisms; a center hole of the annular blocking plate is internally connected with an obstacle removing pipe in a sliding mode, the fixing mechanism is provided with a clamping assembly used for clamping the obstacle removing pipe, the interior of the obstacle removing pipe is in threaded connection with a grouting pipe, one end of the grouting pipe extends out of the obstacle removing pipe and is connected with a high-pressure hose through a connecting pipe fitting, and the high-pressure hose is communicated with a grouting machine. Gravel obstacles in the grouting hole can be rapidly cleaned, it is ensured that the grouting pipe smoothly enters the target position, and therefore the grouting efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of grouting equipment, and in particular relates to tunnel consolidation grouting equipment and a grouting method thereof. Background Art

[0002] During tunneling operations, a pre-grouting reinforcement process can be implemented. This involves using high-pressure grouting technology to pre-insert microducts outside the excavation outline for grouting reinforcement. This process injects high-pressure grout into the rock mass's fracture network, creating a dense anti-seepage curtain and reinforcement structure. This not only blocks the infiltration pathways of groundwater-sand mixtures, but also significantly improves the mechanical properties of the surrounding rock mass. The technical approach involves pre-drilling holes at predetermined locations using a specialized drilling rig. A mobile grouting platform is then connected to the grouting equipment, allowing the prepared cement-based grout to be pressure-delivered through the duct system into the rock mass's pore network.

[0003] The traditional construction process is: after the drilling process is completed, the grouting tube is directly placed into the hole for slurry injection. However, when the tunnel passes through a stratum mainly composed of sandstone and shale, and is partially interbedded with special rock types such as dolomite, the geological conditions show significant differences - sandstone and shale show typical uniform weathering characteristics of clastic rocks, while carbonate rocks (dolomite and limestone) show dissolution-type weathering characteristics. This complex geological environment causes a large amount of loose and broken rock chips and rock powder particles to accumulate around the hole wall after the drilling operation, forming a typical loose medium-filled pore structure. When the traditional tube insertion process is implemented under such geological conditions, the loose accumulation has a significant obstructive effect on the tube, which is specifically manifested as follows: during the insertion of the tube, loose rock chips are prone to accumulation and blocking; rock powder particles may block the tube port as they flow with the slurry; the pore structure of the broken zone causes the slurry diffusion path to be blocked, seriously affecting the grouting reinforcement effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a tunnel consolidation grouting device and a grouting method thereof to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides a tunnel consolidation grouting equipment, including an annular plugging plate, on which a plurality of fixing mechanisms are arranged at equal intervals along the circumference of the center hole, the annular plugging plate is fixed to the grouting hole by the plurality of fixing mechanisms, a clearing pipe is slidably connected in the center hole of the annular plugging plate, a clamping assembly for clamping the clearing pipe is provided on the fixing mechanism, a grouting pipe is threadedly connected in the clearing pipe, one end of the grouting pipe extends out of the clearing pipe and is connected to a high-pressure hose through a connecting pipe fitting, and the high-pressure hose is connected to a grouting machine.

[0006] Preferably, the fixing mechanism includes a plurality of brackets arranged at equal intervals along the circumference of the center hole of the annular blocking plate, an elastic member is slidably provided on the bracket, an auxiliary plate is connected to one end of the elastic member close to the center hole of the annular blocking plate, and a plurality of clamping members are slidably connected to the edge of the center hole of the annular blocking plate at equal intervals, the clamping members are arranged corresponding to the auxiliary plates, and the auxiliary plates are transmission-matched with the clamping members, and the auxiliary plates are fixedly connected to the brackets through locking members.

[0007] Preferably, the elastic member includes a sliding rod slidably connected to the bracket, a spring is slidably sleeved on the sliding rod, one end of the spring abuts against the top cap of the sliding rod, the other end of the spring abuts against the bracket, and the end of the sliding rod close to the center hole of the annular blocking plate is fixedly connected to the auxiliary plate.

[0008] Preferably, the locking member includes a threaded rod, a through hole is provided on the bracket, one end of the threaded rod passes through the through hole and is connected to the auxiliary plate, and the other end of the threaded rod is threadedly connected to an adjusting nut.

[0009] Preferably, the clamping member includes a connecting rod, and a plurality of notches are provided at equal radial intervals on the edge of the center hole of the annular blocking plate. One end of the connecting rod is fixedly connected to the auxiliary plate, and the other end of the connecting rod passes through the notch and is connected to a pressure plate. A plurality of anti-slip protrusions are provided on the side of the pressure plate away from the center hole of the annular blocking plate.

[0010] Preferably, the obstacle clearance tube includes an outer tube and an inner tube, and a sliding assembly is provided between both ends of the outer tube and the inner tube. The outer wall of the inner tube is in sliding contact with the inner wall of the outer tube through the sliding assembly. A plurality of through holes 1 are provided on the inner tube, and a plurality of through holes 2 are provided on the outer tube. The aperture of the through holes 2 is equal to the aperture of the through holes 1 and they are arranged correspondingly.

[0011] Preferably, the sliding assembly includes a plurality of balls, and the inner wall of the outer tube and the outer wall of the inner tube are both provided with a plurality of annular grooves. The annular grooves on the outer tube and the annular grooves on the inner tube are combined to form an annular cavity. The cross-section of the annular cavity is circular, and the plurality of balls are filled in the annular cavity, and grease is applied between the outer tube and the inner tube.

[0012] Preferably, the clamping assembly includes an adjusting bolt vertically threadedly connected to the auxiliary plate, and one end of the adjusting bolt close to the central hole of the annular blocking plate is rotatably connected to a clamping plate.

[0013] Preferably, the grouting pipe is provided with a plurality of grouting holes, and the through hole 1 and the through hole 2 are both arranged corresponding to the grouting holes. The end of the grouting pipe away from the connecting pipe extends out of the obstacle clearance pipe and is connected to a grouting head, and the grouting head is provided with a plurality of long holes.

[0014] The present invention provides a tunnel consolidation grouting method, comprising the following steps:

[0015] Use drilling equipment to open grouting holes at target locations in the tunnel;

[0016] Fix the annular plugging plate at the opening of the grouting hole, pass one end of the obstacle removal pipe through the central hole of the annular plugging plate, connect the other end of the obstacle removal pipe to the industrial vacuum cleaner, gradually insert the obstacle removal pipe into the grouting hole and suck out the gravel or stone powder in the grouting hole;

[0017] Clamp the obstacle removal pipe to the annular blocking plate, separate the obstacle removal pipe from the industrial vacuum cleaner and connect it to a high-pressure air pump to blow off the gravel or stone powder on the through hole of the obstacle removal pipe;

[0018] Insert the grouting pipe into the obstacle clearing pipe and connect it with the upper end thread of the obstacle clearing pipe. Connect the grouting pipe to the valve and high-pressure hose in sequence through the connecting pipe fittings. Connect the high-pressure hose to the grouting machine and start the grouting machine for grouting.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] The annular plugging plate of the present invention is tightly fixed to the grouting hole via a fixing mechanism, forming a reliable sealing structure that effectively prevents slurry leakage during the grouting process, ensuring smooth grouting operations. The clearance pipe is slidably connected to the center hole of the annular plugging plate, facilitating adjustment of its position based on the actual conditions within the grouting hole. The clearance pipe is connected to an industrial vacuum cleaner to suck out the gravel in the grouting hole, ensuring smooth insertion of the clearance pipe into the grouting hole. The clearance pipe is then connected to a high-pressure air pump to blow away the gravel or stone powder on the clearance pipe through-hole, ensuring smooth passage of the slurry.

[0021] The clamping assembly on the fixing mechanism can firmly clamp the obstacle removal pipe to prevent it from shaking or shifting during operation, thereby ensuring the stability and accuracy of the grouting operation.

[0022] The grouting pipe is threaded into the obstacle removal pipe and connected to the grouting machine through connecting pipe fittings and high-pressure hoses, achieving stable grouting. This design not only improves grouting efficiency, but also ensures that the grout can be evenly and accurately injected into the target location, improving the grouting effect.

[0023] Generally speaking, the present invention can quickly clear gravel obstacles in the grouting hole, ensure that the grouting pipe enters the target position smoothly, and thus improve the grouting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0025] Figure 1 This is a schematic diagram of the overall structure of a tunnel consolidation grouting equipment proposed by the present invention;

[0026] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0027] Figure 3 is a top view schematic diagram of the fixing mechanism;

[0028] Figure 4 It is a structural diagram of the sliding component;

[0029] Among them: 1. Grouting head; 2. Long hole; 3. Obstacle-clearing pipe; 4. Connecting pipe fittings; 5. Valve; 6. High-pressure hose; 7. Pressure plate; 8. Anti-slip protrusion; 9. Connecting rod; 10. Annular plug; 11. Adjusting nut; 12. Threaded rod; 13. Bracket; 14. Auxiliary plate; 15. Limiting sleeve; 16. Clamp; 17. Adjusting bolt; 18. Spring; 19. Sliding rod; 20. Grouting pipe; 21. Notch; 301. Through hole 1; 302. Through hole 2; 303. Outer tube; 304. Ball; 305. Inner tube. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] The technical terms in the embodiments are explained below:

[0033] The grouting machine has achieved many significant effects in grouting operations through its technical characteristics. The following is a summary from the dimensions of efficiency, precision, adaptability, and engineering benefits:

[0034] High-pressure, fast grouting: The grouting machine reaches operating pressure within seconds through a high-pressure pump (e.g., maximum pressure up to 11,000 PSI), enabling rapid grout delivery. Compared to traditional hand pumps, this delivers over three times the efficiency, significantly shortening the construction cycle.

[0035] Micro-gap filling capability: The slurry can be injected into fine cracks of 0.1mm. Combined with the continuous high pressure design (such as 50MPa), it ensures that the slurry penetrates deep into the structure, forming a dense filling and improving the durability of the leak-proof effect.

[0036] Portable design: The device is light (e.g. 7kg) and compact, allowing one person to carry it, making it suitable for operations in narrow spaces such as subways and tunnels.

[0037] Wide material compatibility: compatible with a variety of low-viscosity slurries such as polyurethane, epoxy resin, cement slurry, etc., to meet the needs of different working conditions (such as crack reinforcement, anti-seepage and leak plugging).

[0038] Ability to work with water: Grouting can be done directly in a seepage environment without pre-drainage, which simplifies the construction process and is especially suitable for emergency repairs of underground projects.

[0039] Non-destructive repair technology: grouting is directly injected into the cracks through the grouting nozzle to avoid secondary damage to the structure caused by traditional grooving and pipe burying, and preserve the integrity of the building.

[0040] Secondary osmotic pressure mechanism: The slurry reacts with water and foams, generating secondary osmotic pressure, which pushes the elastomer into the micropores, forming multiple sealing layers and improving the durability of the structure.

[0041] Low noise and no pollution: The motor drive design (such as 560W power) realizes stepless speed regulation and low operating noise, which meets the requirements of environmental protection construction.

[0042] Safety protection design: multiple pressure protections (such as high-pressure pipe safety range <14000PSI) and leak-proof structures (such as Teflon sealing gaskets) reduce operational risks.

[0043] Durable wearing parts: Tungsten steel pump, wear-resistant screw and other materials are used to extend the life of the equipment (for example, parts do not deform under the maximum pressure of 50MPa).

[0044] Convenient cleaning: Special cleaning agent circulation cleaning function avoids slurry residue and reduces maintenance time.

[0045] Grouting machines utilize high-pressure grouting, micro-gap filling, and non-destructive repair technologies to comprehensively improve construction efficiency, quality, and safety. Compatible with a wide range of materials and working conditions, they have become core equipment for structural repair in the construction, underground, and water conservancy sectors. Their technical benefits directly translate into shortened project cycles, lower maintenance costs, and extended structural lifespans, providing a reliable solution for construction under complex geological conditions.

[0046] Reference Figures 1 to 4 As shown, the present invention provides a tunnel consolidation grouting equipment, including an annular plugging plate 10, on which a plurality of fixing mechanisms are arranged at equal intervals along the circumference of the center hole. The annular plugging plate 10 is fixed to the grouting hole through the plurality of fixing mechanisms. A clearance pipe 3 is slidably connected in the center hole of the annular plugging plate 10, and a clamping assembly for clamping the clearance pipe 3 is provided on the fixing mechanism. The internal thread of the clearance pipe 3 is connected to a grouting pipe 20, and one end of the grouting pipe 20 extends out of the clearance pipe 3 and is connected to a high-pressure hose 6 through a connecting pipe fitting 4. The high-pressure hose 6 is connected to the grouting machine.

[0047] The annular plugging plate 10 is tightly fixed to the grouting hole through a fixing mechanism, forming a reliable sealing structure, effectively preventing slurry leakage during the grouting process, and ensuring the smooth progress of the grouting operation. The obstacle removal pipe 3 is slidably connected to the central hole of the annular plugging plate 10, which is convenient for adjusting the position according to the actual situation in the grouting hole. The obstacle removal pipe 3 is connected to an industrial vacuum cleaner to suck out the gravel in the grouting hole to ensure that the obstacle removal pipe is smoothly inserted into the grouting hole. Subsequently, the obstacle removal pipe 3 is connected to a high-pressure air pump to blow away the gravel or stone powder on the through hole of the obstacle removal pipe 3 to ensure that the slurry can pass smoothly.

[0048] The clamping assembly on the fixing mechanism can firmly clamp the obstacle removal pipe 3 to prevent it from shaking or shifting during the operation, thereby ensuring the stability and accuracy of the grouting operation.

[0049] The grouting pipe 20 is threadedly connected to the obstacle removal pipe and connected to the grouting machine through the connecting pipe 4 and the high-pressure hose 6, achieving stable delivery of slurry. This design not only improves the efficiency of grouting, but also ensures that the slurry can be evenly and accurately injected into the target location, improving the grouting effect.

[0050] Furthermore, the fixing mechanism includes a plurality of brackets 13 arranged at equal intervals along the circumference of the center hole of the annular blocking plate 10, an elastic member is slidingly provided on the bracket 13, an auxiliary plate 14 is connected to one end of the elastic member close to the center hole of the annular blocking plate 10, and a plurality of clamping members are slidingly connected at equal intervals to the edge of the center hole of the annular blocking plate 10, the clamping members and the auxiliary plates 14 are arranged correspondingly, and the auxiliary plates 14 are transmission-coordinated with the clamping members, and the auxiliary plates 14 are fixedly connected to the bracket 13 through a locking member.

[0051] By setting up the elastic component, the clamping piece and the auxiliary plate 14 are initially located away from the center hole of the annular plugging plate 10. With this structural setting, when the clamping piece is inserted into the grouting hole, the clamping piece is pressed against the wall of the grouting hole under the action of the elastic piece, making it convenient to pre-install the annular plugging plate 10 at the mouth of the grouting hole.

[0052] Furthermore, the elastic member includes a sliding rod 19 slidably connected to the bracket 13, and a spring 18 is provided on the sliding sleeve of the sliding rod 19. One end of the spring 18 abuts against the top cap of the sliding rod 19, and the other end of the spring 18 abuts against the bracket 13. The end of the sliding rod 19 close to the center hole of the annular blocking plate 10 is fixedly connected to the auxiliary plate 14.

[0053] Under the rebound force of the spring 18, the slide rod 19 drives the auxiliary plate 14 away from the center hole of the annular blocking plate 10, and the auxiliary plate 14 drives the pressing member to press against the wall of the grouting hole.

[0054] Furthermore, the locking member includes a threaded rod 12 , a through hole is provided on the bracket 13 , one end of the threaded rod 12 passes through the through hole and is connected to the auxiliary plate 14 , and the other end of the threaded rod 12 is threadedly connected to the adjusting nut 11 .

[0055] After the pre-installation of the annular plugging plate 10 is completed, the adjusting nut 11 is rotated to tighten the adjusting nut 11 so that the pressing member is reliably pressed against the wall of the grouting hole.

[0056] Furthermore, the clamping part includes a connecting rod 9, and a plurality of notches 21 are provided at equal radial intervals on the edge of the center hole of the annular blocking plate 10. One end of the connecting rod 9 is fixedly connected to the auxiliary plate 14, and the other end of the connecting rod 9 passes through the notch 21 and is connected to the pressure plate 7. The pressure plate 7 is provided with a plurality of anti-slip protrusions 8 on the side away from the center hole of the annular blocking plate 10.

[0057] In this embodiment, the anti-slip protrusions 8 are triangular pyramids. The pressure plate 7 drives the triangular pyramids to press against the wall of the grouting hole, further strengthening the connection between the pressure plate 7 and the wall of the grouting hole. An elastic rubber sheet is bonded to the notch 21, and the connecting rod 9 passes through the elastic rubber sheet to prevent grout from overflowing from the notch 21 during grouting.

[0058] Furthermore, the obstacle removal tube 3 includes an outer tube 303 and an inner tube 305. A sliding assembly is provided between both ends of the outer tube 303 and the inner tube 305. The outer wall of the inner tube 305 is in sliding contact with the inner wall of the outer tube 303 through the sliding assembly. A plurality of through holes 1 301 are provided on the inner tube 305, and a plurality of through holes 2 302 are provided on the outer tube 303. The aperture of the through hole 2 302 is equal to the aperture of the through hole 1 301 and is correspondingly arranged.

[0059] In this embodiment, a limiting sleeve 15 is fixed on the top end of the inner tube 305, and a wrench is buckled on the limiting sleeve 15 to limit the position, so that the inner tube 305 can be moved and rotated. The sliding component is provided to reduce friction resistance, making the operation easier. When the inner tube 305 rotates, the through hole 1 301 and the through hole 2 302 are staggered, and the original circular hole is turned into an elliptical hole with a smaller cross-section, so that the slurry pressure of the inner tube 305 is increased, the outflow of the slurry is increased, the filling rate can be improved, and the slurry is more fully filled into the crack.

[0060] Furthermore, the sliding assembly includes multiple balls 304, and the inner wall of the outer tube 303 and the outer wall of the inner tube 305 are both provided with multiple annular grooves. The annular grooves on the outer tube 303 and the annular grooves on the inner tube 305 are combined to form an annular cavity. The cross-section of the annular cavity is circular, and multiple balls 304 are filled in the annular cavity, and grease is applied between the outer tube 303 and the inner tube 305.

[0061] The ball 304 converts traditional sliding friction into rolling friction, and the circular cross-section design of the annular cavity reduces the friction coefficient of the contact surface.

[0062] Furthermore, the clamping assembly includes an adjusting bolt 17 vertically threadedly connected to the auxiliary plate 14 , and one end of the adjusting bolt 17 close to the center hole of the annular blocking plate 10 is rotatably connected to the clamping plate 16 .

[0063] By rotating the adjusting bolt 17 , the clamping plate 16 is clamped on the outer wall of the outer tube 303 , thereby achieving clamping and fixing of the outer tube 303 .

[0064] Furthermore, a plurality of grouting holes are provided on the grouting pipe 20, and through hole 1 301 and through hole 2 302 are both arranged corresponding to the grouting holes. The end of the grouting pipe 20 away from the connecting pipe 4 extends out the obstacle clearance pipe 3 and is connected to the grouting head 1, and a plurality of long strip holes 2 are provided on the grouting head 1.

[0065] The slurry is injected into the crack through the grouting hole, through hole 1 301 and through hole 2 302. At the same time, the slurry is filled into the crack through the long hole 2, thereby achieving full filling.

[0066] The present invention provides a tunnel consolidation grouting method, comprising the following steps:

[0067] Use drilling equipment to open grouting holes at target locations in the tunnel;

[0068] Fix the annular plugging plate 10 at the opening of the grouting hole, pass one end of the obstacle removal pipe 3 through the central hole of the annular plugging plate 10, connect the other end of the obstacle removal pipe 3 to the industrial vacuum cleaner, gradually insert the obstacle removal pipe 3 into the grouting hole and suck out the gravel or stone powder in the grouting hole;

[0069] Clamp the obstacle removal pipe 3 and the annular blocking plate 10 tightly, separate the obstacle removal pipe 3 from the industrial vacuum cleaner and connect it to a high-pressure air pump to blow away the gravel or stone powder on the through hole of the obstacle removal pipe 3;

[0070] Insert the grouting pipe 20 into the obstacle removal pipe 3 and connect it with the upper end of the obstacle removal pipe 3 through threads. Connect the grouting pipe 20 to the valve 5 and the high-pressure hose 6 in sequence through the connecting pipe 4. Connect the high-pressure hose 6 to the grouting machine and start the grouting machine for grouting.

[0071] Specifically, the annular blocking plate 10 is fixed at the mouth of the grouting hole through a fixing mechanism, and the obstacle clearing pipe 3 is passed through the center hole of the annular blocking plate 10 and gradually inserted into the grouting hole. At the same time, the obstacle clearing pipe 3 is connected to the industrial vacuum cleaner to remove the gravel. When the obstacle clearing pipe 3 is inserted to the target position, the adjusting bolt 17 is rotated to clamp the clamping plate 16 on the outer wall of the outer tube 303 to achieve clamping and fixation of the outer tube 303. The industrial vacuum cleaner connected to the obstacle clearing pipe 3 is removed and connected to the high-pressure air pump to blow off the gravel or stone powder on the through hole of the obstacle clearing pipe 3, and the grouting pipe 20 is moved in and out of the obstacle clearing pipe 3, and the external thread on the grouting pipe 20 is connected to the internal thread of the obstacle clearing pipe 3 to prevent the slurry from escaping from the connecting end face of the grouting pipe 20 and the obstacle clearing pipe 3, so that the high-pressure hose 6 is connected to the grouting machine. During the grouting process, use a wrench to rotate the inner tube 305, and the through hole 1 301 on the inner tube 305 is staggered with the through hole 2 302 of the outer tube 303, turning the original circular hole into an elliptical hole with a smaller cross-section, thereby increasing the slurry pressure of the inner tube 305 and increasing the outflow of the slurry, which can increase the filling rate and allow the slurry to be more fully filled into the crack.

[0072] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0073] The above are only preferred specific implementation methods of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the scope of protection of the present application.

Claims

1. A tunnel consolidation grouting equipment, characterized in that: The invention comprises an annular plugging plate (10), wherein a plurality of fixing mechanisms are arranged at equal intervals along the circumference of the center hole on the annular plugging plate (10), and the annular plugging plate (10) is fixed to the grouting hole through the plurality of fixing mechanisms. A clearance pipe (3) is slidably connected in the center hole of the annular plugging plate (10), and a clamping assembly for clamping the clearance pipe (3) is arranged on the fixing mechanism. The clearance pipe (3) is internally threadedly connected to a grouting pipe (20), and one end of the grouting pipe (20) extends out of the clearance pipe (3) and is connected to a high-pressure hose (6) through a connecting pipe (4), and the high-pressure hose (6) is connected to a grouting machine.

2. The tunnel consolidation grouting equipment according to claim 1, characterized in that: The fixing mechanism includes a plurality of brackets (13) arranged at equal intervals along the circumference of the center hole of the annular plugging plate (10), an elastic member is slidably arranged on the bracket (13), an auxiliary plate (14) is connected to one end of the elastic member close to the center hole of the annular plugging plate (10), and a plurality of pressing members are slidably connected to the edge of the center hole of the annular plugging plate (10) at equal intervals, the pressing members are arranged corresponding to the auxiliary plates (14), and the auxiliary plates (14) are in transmission cooperation with the pressing members, and the auxiliary plates (14) are fixedly connected to the bracket (13) through a locking member.

3. The tunnel consolidation grouting equipment according to claim 2, characterized in that: The elastic member includes a slide rod (19) slidably connected to the bracket (13), a spring (18) is slidably sleeved on the slide rod (19), one end of the spring (18) abuts against the top cap of the slide rod (19), and the other end of the spring (18) abuts against the bracket (13), and one end of the slide rod (19) close to the center hole of the annular blocking plate (10) is fixedly connected to the auxiliary plate (14).

4. The tunnel consolidation grouting equipment according to claim 2, characterized in that: The locking member comprises a threaded rod (12), a through hole is provided on the bracket (13), one end of the threaded rod (12) passes through the through hole and is connected to the auxiliary plate (14), and the other end of the threaded rod (12) is threadedly connected to an adjusting nut (11).

5. The tunnel consolidation grouting equipment according to claim 2, characterized in that: The clamping member includes a connecting rod (9), a plurality of notches (21) are provided at equal intervals along the radial direction on the edge of the center hole of the annular plugging plate (10), one end of the connecting rod (9) is fixedly connected to the auxiliary plate (14), and the other end of the connecting rod (9) passes through the notch (21) and is connected to a pressure plate (7), and a plurality of anti-slip protrusions (8) are provided on the side of the pressure plate (7) away from the center hole of the annular plugging plate (10).

6. The tunnel consolidation grouting equipment according to claim 1, characterized in that: The obstacle removal pipe (3) includes an outer pipe (303) and an inner pipe (305), and a sliding assembly is provided between both ends of the outer pipe (303) and the inner pipe (305). The outer wall of the inner pipe (305) is in sliding contact with the inner wall of the outer pipe (303) through the sliding assembly. The inner pipe (305) is provided with a plurality of through holes (301), and the outer pipe (303) is provided with a plurality of through holes (302). The aperture of the through holes (302) is equal to the aperture of the through holes (301) and is correspondingly provided.

7. The tunnel consolidation grouting equipment according to claim 6, characterized in that: The sliding assembly includes a plurality of balls (304), and the inner wall of the outer tube (303) and the outer wall of the inner tube (305) are both provided with a plurality of annular grooves. The annular grooves on the outer tube (303) and the annular grooves on the inner tube (305) are combined to form an annular cavity. The cross section of the annular cavity is circular. The plurality of balls (304) are filled in the annular cavity, and grease is applied between the outer tube (303) and the inner tube (305).

8. The tunnel consolidation grouting equipment according to claim 2, characterized in that: The clamping assembly comprises an adjusting bolt (17) vertically threadedly connected to the auxiliary plate (14); one end of the adjusting bolt (17) close to the central hole of the annular blocking plate (10) is rotatably connected to a clamping plate (16).

9. The tunnel consolidation grouting equipment according to claim 6, characterized in that: The grouting pipe (20) is provided with a plurality of grouting holes, and the through hole 1 (301) and the through hole 2 (302) are both arranged corresponding to the grouting holes. One end of the grouting pipe (20) away from the connecting pipe (4) extends out of the obstacle removal pipe (3) and is connected to a grouting head (1), and the grouting head (1) is provided with a plurality of long strip holes (2).

10. A tunnel consolidation grouting method, according to any one of the tunnel consolidation grouting equipment according to claims 1-9, characterized in that: The following steps are involved: Use drilling equipment to open grouting holes at target locations in the tunnel; Fix the annular plugging plate (10) at the opening of the grouting hole, pass one end of the obstacle removal pipe (3) through the central hole of the annular plugging plate (10), connect the other end of the obstacle removal pipe (3) to an industrial vacuum cleaner, gradually insert the obstacle removal pipe (3) into the grouting hole and suck out the crushed stones or stone powder in the grouting hole; The obstacle clearing pipe (3) is clamped and fixed to the annular blocking plate (10), the obstacle clearing pipe (3) is separated from the industrial vacuum cleaner and connected to a high-pressure air pump, and the gravel or stone powder on the through hole of the obstacle clearing pipe (3) is blown off; The grouting pipe (20) is inserted into the obstacle clearing pipe (3) and is threadedly connected to the upper end of the obstacle clearing pipe (3). The grouting pipe (20) is sequentially connected to the valve (5) and the high-pressure hose (6) through the connecting pipe (4). The high-pressure hose (6) is connected to the grouting machine, and the grouting machine is started to perform grouting.

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