Localized grouting device suitable for reinforcing tunnel fault fracture zone and construction method of localized grouting device

Abstract

The invention relates to a localized grouting device suitable for reinforcing a tunnel fault fracture zone and a construction method of the localized grouting device. A connecting base is arranged at the top of a supporting base, inserting plates are arranged on the two sides of the connecting base in a sliding mode, the outer ends of the inserting plates are fixedly connected with a mounting base, a rotating base is embedded in the mounting base, and an outer cylinder is arranged in the rotating base; the fixing assembly is arranged on the connecting base and used for fixing the two rotating bases at the same time. The lifting assembly is arranged on the connecting base and used for driving the outer cylinder to do reciprocating lifting movement, and a gap in the sleeve shell material is reduced. The core rod is arranged in the outer cylinder, the outer wall of the core rod is provided with a discharging hole corresponding to the first spray head, the outer walls of the two ends of the core rod are both provided with air bags, a second connecting pipe at the top of the core rod is communicated with the two air bags, and the top end of a first connecting pipe at the top of the core rod is connected with external filling equipment through a pipeline; the problems that the direction of a nozzle of an existing grouting device cannot be adjusted, grout diffusion is difficult to effectively control, grout is diffused disorderly, and the grouting reinforcement effect is difficult to guarantee are solved.

Description

Technical Field

[0001] The invention belongs to the field of building construction, and relates to a localized grouting device suitable for reinforcing a fault fracture zone of a tunnel and a construction method thereof. Background Art

[0002] When tunnel construction encounters a fault fracture zone, how to effectively control the deformation of the surrounding rock, ensure the stability of the surrounding rock, and avoid adverse phenomena such as water gushing during construction, thereby ensuring the safety of construction workers, has become an urgent problem to be solved. However, the existing fault fracture zone grouting reinforcement device has the problem that the nozzle direction cannot be adjusted, which makes it difficult to effectively control the slurry diffusion, and the slurry diffuses disorderly, which in turn affects the grouting reinforcement effect. Summary of the invention

[0003] In view of this, in order to solve the problems that the nozzle direction of the current grouting device cannot be adjusted, the slurry diffusion is difficult to effectively control, the slurry diffuses disorderly, and the grouting reinforcement effect is difficult to ensure, the present invention provides a localized grouting device suitable for tunnel fault fracture zone reinforcement and its construction method.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A localized grouting device suitable for reinforcing a fault fracture zone of a tunnel comprises a support seat, a connecting seat is arranged on the top of the support seat, plug plates are slidably arranged on both sides of the connecting seat, a mounting seat is fixedly connected to the outer end of the plug plate, a rotating seat is embedded in the mounting seat, and an outer cylinder is arranged in the rotating seat;

[0006] A fixing assembly is provided on the connecting seat for fixing the two rotating seats at the same time;

[0007] A lifting assembly is provided on the connecting seat, which is used to drive the outer cylinder to move up and down reciprocatingly to reduce the gap in the casing material;

[0008] A core rod, the core rod is arranged in the outer tube, a plurality of groups of first nozzles are embedded in the outer wall of the outer tube, a discharge hole corresponding to the first nozzle is opened on the outer wall of the core rod, air bags are arranged on the outer walls at both ends of the core rod, a second connecting pipe is fixedly provided through the top of the core rod, the second connecting pipe is communicated with the two air bags, the top end of the second connecting pipe is connected to an external air source through a pipeline, and is used to fix the core rod in the outer tube, the top of the core rod is communicated with a first connecting pipe, and the top end of the first connecting pipe is connected to an external filling device through a pipeline;

[0009] An adjusting mechanism is arranged inside the outer tube for adjusting the spraying direction of the first nozzle.

[0010] Furthermore, the fixing assembly includes an external screw fixed on the top of the connecting seat, the outer wall of the external screw is threadedly sleeved with a first nut ring, the outer wall of the first nut ring is rotatably sleeved with a rotating ring, a first connecting block is fixedly provided on the top of the plug plate, a plug rod is slidably penetrated through one side of the first connecting block, a socket corresponding to the plug rod is opened on the outer wall of the mounting seat, one end of the plug rod penetrates the socket and contacts the rotating seat, and the ends of the two plug rods close to each other are connected to the rotating ring.

[0011] Furthermore, a sliding block is slidably provided on the top of the connecting seat, the insertion rod slides through the sliding block and is clamped with the sliding block through a clamping piece, a connecting rod is rotatably provided between the sliding block and the rotating ring, two limiting rings are fixedly sleeved on the outer wall of the insertion rod, the first connecting block is located between the two limiting rings, and a first spring is sleeved on the outer wall of the insertion rod, and two ends of the first spring are respectively fixedly connected to the inner limiting ring and the side of the first connecting block close to each other.

[0012] Furthermore, the clamping part includes two second guide rods fixedly arranged on the top of the sliding block, the outer wall sliding sleeves of the two second guide rods are provided with the same wedge block, the outer wall of the insertion rod is provided with a plurality of limiting grooves used in conjunction with the wedge blocks, the outer wall sleeves of the second guide rods are provided with a second spring, and the two ends of the second spring are respectively fixedly connected to the top of the second guide rod and the top of the wedge block.

[0013] Furthermore, the lifting assembly includes two fixed blocks fixed between the supporting seat and the connecting seat, a sleeve rod is rotatably provided in the fixed block, sliding rods are slidably provided at both ends of the sleeve rod, a universal ball is fixedly provided at the outer end of the sliding rod, a fixed seat is embedded in the outer wall of the universal ball, two clamping plates are provided on the outer wall of the outer cylinder, both ends of the two clamping plates are fixedly connected by bolts, the two clamping plates are fixed to the outer wall of the outer cylinder, a plurality of first guide rods are slidably provided through the top of the inner clamping plate, the tops of the plurality of first guide rods are fixedly connected to the rotating seat, the fixed seat located on the outside is fixedly connected to the corresponding clamping plates, the top of the supporting seat can be raised and lowered and a second nut ring is provided, the two fixed seats located on the inside are slidably provided on the second nut ring, and one side of the fixed seat is fixedly connected to the second nut ring by a screw.

[0014] Furthermore, a first reciprocating screw is rotatably provided through the connecting seat and the top of the external screw, a motor is fixedly provided on the top of the connecting seat, an output end of the motor is fixedly connected to the first reciprocating screw, and a second nut ring is threadedly sleeved on the first reciprocating screw.

[0015] Furthermore, the adjustment mechanism includes an inner cylinder arranged in the outer cylinder, a core rod is slidably arranged in the inner cylinder, a plurality of second nozzles corresponding to the first nozzles are embedded in the outer wall of the inner cylinder, a sliding tube is connected to the inner side of the first nozzle, a fixed tube is slidably sleeved on the outer wall of the sliding tube, one end of the fixed tube is connected to the second nozzle, and a driving assembly is arranged in the outer cylinder for driving the inner cylinder to rotate and move up and down.

[0016] Furthermore, the driving assembly includes a second reciprocating screw rotatably arranged in the outer cylinder, the outer wall sliding sleeve of the second reciprocating screw is provided with a ball nut, the outer wall of the ball nut is provided with a second connecting block through a one-way bearing sleeve, the second connecting block is slidably arranged on the outer wall of the inner cylinder, the second connecting block is slidably arranged in the outer cylinder, a top ring is provided on the top of the outer cylinder, a motor is provided in the top ring, and the output end of the motor is fixedly connected to the second reciprocating screw for starting the rotation of the second reciprocating screw.

[0017] Furthermore, the outer wall of the inner cylinder is fixedly sleeved with a gear ring, the outer wall of the inner cylinder is rotatably sleeved with a sliding seat, a gear meshing with the gear ring is rotatably provided in the sliding seat, a sliding ring is provided in the gear through a one-way bearing, and the sliding ring is slidably sleeved on the second reciprocating screw.

[0018] The construction method of a localized grouting device suitable for reinforcing a tunnel fault fracture zone comprises the following steps:

[0019] S1. First, use a drilling rig to drill holes in the construction area and place the mounting base on the corresponding holes;

[0020] S2, then, insert the outer cylinder into the mounting seat and slowly insert it into the hole. After it is completely inserted to the bottom, apply the casing material between the outer cylinder and the hole. During the adding process, start the motor to drive the outer cylinder to move up and down to reduce the gap between the casing materials;

[0021] S3, then put the core rod in the inner tube, start the external air source to inflate the airbag, fix the core rod in the inner tube, and then start the external filling equipment to inject grout;

[0022] S4. When the spraying angle of the first nozzle needs to be adjusted, the motor in the top ring is started to drive the inner cylinder to rotate or move up and down to adjust the spraying angle of the first nozzle;

[0023] S5. Then, pull the core rod upwards in sequence as needed to adjust the grouting position.

[0024] The beneficial effects of the present invention are:

[0025] 1. The localized grouting device for reinforcing the fault fracture zone of a tunnel disclosed in the present invention can adjust the entry angle of the outer cylinder through the setting of the rotating seat so as to grout holes of different angles. After the adjustment is completed, the two rotating seats can be fixed at the same time by using the outer screw, the first nut ring and the rotating ring in combination, thereby ensuring stability during the grouting process.

[0026] 2. The localized grouting device suitable for reinforcing the fault fracture zone of a tunnel disclosed in the present invention, through the setting of the lifting assembly, the cooperation of the second nut ring, the sleeve rod and the sliding rod, utilizes the lever principle, so that the outer cylinder can move back and forth, effectively reducing the gap in the casing material, improving the uniformity and density of the grouting, and can effectively avoid the shaking of the outer cylinder caused by uneven filling of the casing material, resulting in a poor grouting effect.

[0027] 3. The localized grouting device suitable for reinforcing the fault fracture zone of a tunnel disclosed in the present invention, through the design of the driving component, especially the coordinated use of the second reciprocating screw with the second connecting block and the gear, enables the inner tube to be lifted, moved and rotated, and in the process of lifting and rotating, cooperates with the first connecting pipe and the second connecting pipe to drive the direction of the spray hole of the first nozzle, thereby realizing flexible adjustment of the grouting direction and precise control of the grouting amount.

[0028] 4. The localized grouting device suitable for the reinforcement of the fault fracture zone of the tunnel disclosed in the present invention can not only firmly fix the grouting assembly to ensure the stability of the grouting process, but also drive the grouting assembly to lift and lower back and forth through the lifting assembly, effectively reducing the gap in the casing material and improving the grouting quality. At the same time, the coordinated design of the core rod and the airbag not only realizes the firm fixation of the core rod, but also facilitates the uniform injection of the grouting material. In addition, the introduction of the adjustment mechanism allows the grouting direction to be flexibly adjusted to meet the grouting needs under complex geological conditions.

[0029] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the localized grouting device suitable for reinforcing the fault fracture zone of a tunnel according to the present invention;

[0032] Figure 2 It is a schematic diagram of the clamping plate installation structure of the localized grouting device suitable for reinforcing the fault fracture zone of a tunnel according to the present invention;

[0033] Figure 3 It is a schematic diagram of the installation structure of the mounting seat and the rotating seat of the localized grouting device suitable for strengthening the fault fracture zone of a tunnel according to the present invention;

[0034] Figure 4 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0035] Figure 5 It is a schematic diagram of the installation structure of the connecting rod and the sliding block of the localized grouting device suitable for strengthening the fault fracture zone of the tunnel according to the present invention;

[0036] Figure 6 It is a schematic diagram of the installation structure of the sleeve rod and the sliding rod of the localized grouting device suitable for reinforcing the fault fracture zone of a tunnel according to the present invention;

[0037] Figure 7 It is a schematic diagram of the outer cylinder and core rod structure of the localized grouting device suitable for reinforcing the fault fracture zone of a tunnel according to the present invention;

[0038] Figure 8 It is a schematic diagram of the partial structure of the outer cylinder of the localized grouting device suitable for reinforcing the fault fracture zone of a tunnel according to the present invention;

[0039] Fig. 9 The figure is a schematic diagram of the cross-sectional structure of the outer cylinder of the localized grouting device suitable for reinforcing the fault fracture zone of a tunnel according to the present invention.

[0040] Figure numerals: 1, support seat; 2, fixed block; 3, connecting seat; 4, first connecting block; 5, plug plate; 6, mounting seat; 7, outer cylinder; 8, rotating seat; 9, first guide rod; 10, clamping plate; 11, bolt; 12, fixing seat; 13, universal ball; 14, sliding rod; 15, jack; 16, motor; 17, outer screw; 18, first reciprocating screw; 19, first nut ring; 20, rotating ring; 21, connecting rod; 22, plug rod; 23, first spring; 24, limit ring; 2 5. Sliding block; 26. Limiting groove; 27. Second guide rod; 28. Second spring; 29. ​​Wedge block; 30. Sleeve rod; 31. Second nut ring; 32. Top ring; 33. Core rod; 34. Discharge hole; 35. Air bag; 36. First connecting pipe; 37. Second connecting pipe; 38. First nozzle; 39. Inner tube; 40. Second nozzle; 41. Second reciprocating screw; 42. Second connecting block; 43. Gear ring; 44. Sliding seat; 45. Gear; 46. Fixed pipe; 47. Sliding pipe. DETAILED DESCRIPTION

[0041] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0042] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0043] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] like Figure 1-Figure 9 As shown, a localized grouting device suitable for strengthening a fault fracture zone of a tunnel comprises a support seat 1, a connecting seat 3 is fixedly arranged on the top of the support seat 1, plug plates 5 are slidably arranged on both sides of the connecting seat 3, and the plug plates 5 can slide left and right on the connecting seat 3 to adapt to work requirements of different widths. The outer end of the plug plate 5 is fixedly connected to a mounting seat 6 by fasteners such as bolts, and a rotating seat 8 is embedded in the mounting seat 6. An outer cylinder 7 is arranged in the rotating seat 8, which can guide the inner cylinder 7 to adapt to different grouting angles.

[0045] In order to fix the two rotating seats 8, a fixing assembly is provided. The fixing assembly includes an outer screw 17 fixedly arranged on the top of the connecting seat 3, and the outer wall of the outer screw 17 is threadedly sleeved with a first nut ring 19. The outer wall of the first nut ring 19 is rotatably sleeved with a rotating ring 20, and the rotating ring 20 can rotate around the first nut ring 19. The top of the plug plate 5 is fixedly provided with a first connecting block 4, and a plug rod 22 is slidably penetrated through one side of the first connecting block 4, and a plug hole 15 corresponding to the plug rod 22 is opened on the outer wall of the mounting seat 6. One end of the plug rod 22 can penetrate the plug hole 15 and contact the rotating seat 8, thereby fixing the rotating seat 8. The ends of the two plug rods 22 that are close to each other are connected to the rotating ring 20. Therefore, when the first nut ring 19 makes it rise and fall on the outer screw 17, it can drive the rotating ring 20 to rise and fall, and can drive the two plug rods 22 to move inward or outward at the same time, so as to achieve simultaneous fixing or loosening of the two rotating seats 8.

[0046] In order to drive the outer cylinder 7 to move up and down, a lifting assembly is provided. The lifting assembly includes two fixed blocks 2 fixedly provided between the support seat 1 and the connecting seat 3, a sleeve rod 30 is rotatably provided in the fixed block 2, and sliding rods 14 are slidably provided at both ends of the sleeve rod 30. The sliding rod 14 can slide on the sleeve rod 30 to form a lever principle to adapt to different lifting heights. A universal ball 13 is fixedly provided at the outer end of the sliding rod 14, and a fixed seat 12 is embedded in the outer wall of the universal ball 13, and two clamping plates 10 are provided on the outer wall of the outer cylinder 7. Both ends of the two clamping plates 10 are fixedly connected by bolts 11, and the two clamping plates 10 are fixed to the outer wall of the outer cylinder 7. A plurality of first guide rods 9 are slidably provided on the top of the inner clamping plate 10, and the tops of the plurality of first guide rods 9 are fixedly connected to the rotating seat 8. Therefore, when the sleeve rod 30 rotates, the clamping plate 10 can be driven to move up and down by the lever principle, thereby driving the outer cylinder 7 to move up and down, and the outer shell material can be made tighter during the lifting and moving process. The fixing seat 12 located on the outside is fixedly connected to the corresponding clamping plate 10, and a second nut ring 31 is provided on the top of the support seat 1 which can be raised and lowered. The two fixing seats 12 located on the inside are both slidably arranged on the second nut ring 31 and fixedly connected to the second nut ring 31 by screws. Therefore, when the second nut ring 31 is raised or lowered, the fixing seat 12 can be driven to rise or fall by utilizing the lever principle.

[0047] In order to drive the second nut ring 31 to rise and fall, the connection seat 3 and the top of the external screw 17 are rotatably provided with the same first reciprocating screw 18, the top of the connection seat 3 is fixedly provided with a motor 16, the output end of the motor 16 is fixedly connected to the first reciprocating screw 18, and the second nut ring 31 is threadedly sleeved on the first reciprocating screw 18. Therefore, when the motor 16 is started, it can drive the first reciprocating screw 18 to rotate, thereby driving the second nut ring 31 to rise and fall.

[0048] A core rod 33 is provided in the outer tube 7. A second connecting pipe 37 is fixedly provided through the top of the core rod 33. The second connecting pipe 37 is communicated with two air bags 35, and the top end of the second connecting pipe 37 is connected to an external air source through a pipeline. When the external air source inflates the air bags 35, the air bags 35 can expand and be fixed in the outer tube 7. A first connecting pipe 36 is provided at the top of the core rod 33. The top end of the first connecting pipe 36 is connected to an external filling device through a pipeline, and is used to fill the core rod 33 with grouting material. A discharge hole 34 corresponding to the first nozzle 38 is provided on the outer wall of the core rod 33, and the grouting material can be sprayed out through the discharge hole 34 and the first nozzle 38.

[0049] In order to adjust the spraying direction of the first nozzle 38, an adjustment mechanism is provided. The adjustment mechanism includes an inner cylinder 39 arranged in the outer cylinder 7, wherein the inner cylinder 39 and the outer cylinder 7 can be made of 304 stainless steel (the inner wall is polished to Ra≤0.8μm), the core rod 33 is slidably arranged in the inner cylinder 39, and the outer wall of the inner cylinder 39 is embedded with a plurality of second nozzles 40 corresponding to the first nozzle 38, and the first nozzle 38 and the second nozzle 40 can be made of tungsten carbide hard alloy. A sliding tube 47 is connected to the inner side of the first nozzle 38, and a fixed tube 46 is slidably sleeved on the outer wall of the sliding tube 47, and one end of the fixed tube 46 is connected to the second nozzle 40. Therefore, when the inner cylinder 39 rotates, it can drive the sliding tube 47, the fixed tube 46 and the second nozzle 40 to rotate, thereby changing the spraying direction of the grouting material. A driving assembly is provided in the outer cylinder 7, which is used to drive the inner cylinder 39 to rotate and move up and down, and is used to adjust the slurry spraying in different directions.

[0050] The driving assembly includes a second reciprocating screw 41 rotatably arranged in the outer cylinder 7, a ball nut is slidably sleeved on the outer wall of the second reciprocating screw 41, a second connecting block 42 is slidably sleeved on the outer wall of the ball nut through a one-way bearing sleeve, and the second connecting block 42 is slidably arranged on the outer wall of the inner cylinder 39 and slidably arranged in the outer cylinder 7. When the second reciprocating screw 41 rotates clockwise, the one-way bearing can be used to limit the ball nut so that it can only move up and down, thereby driving the second connecting block 42 to move up and down, and then driving the inner cylinder 39 to move up and down, while when the second reciprocating screw 41 rotates counterclockwise, the one-way bearing can be used to drive the ball nut to rotate together, and the second connecting block 42 will not be driven to move up and down. A top ring 32 is provided at the top of the outer cylinder 7, and a motor is provided in the top ring 32. The output end of the motor is fixedly connected to the second reciprocating screw 41, and is used to start the rotation of the second reciprocating screw 41.

[0051] The outer wall of the inner cylinder 39 is fixedly sleeved with a gear ring 43, and the outer wall of the inner cylinder 39 is rotatably sleeved with a sliding seat 44, and a gear 45 meshing with the gear ring 43 is rotatably provided in the sliding seat 44. A sliding ring is provided in the gear 45 through a one-way bearing, and the sliding ring is slidably sleeved on the second reciprocating screw 41. Therefore, when the inner cylinder 39 is raised or lowered, the gear ring 43 can be driven to rise or fall, and then the gear 45 can be driven to rise or fall on the second reciprocating screw 41. When the second reciprocating screw 41 rotates clockwise, the gear 45 will not be driven to rotate due to the effect of the one-way bearing. When the second reciprocating screw 41 rotates counterclockwise, the gear 45 can be driven to rotate through the one-way bearing. Since the gear 45 meshes with the gear ring 43, the rotation of the gear 45 can drive the inner cylinder 39 to rotate.

[0052] In order to facilitate the cooperation between the insertion rod 22 and the rotating ring 20, a sliding block 25 is slidably provided on the top of the connecting seat 3, and the insertion rod 22 is slidably provided in the sliding block 25 and is clamped with the sliding block 25 through a clamping piece. A connecting rod 21 is rotatably provided between the sliding block 25 and the rotating ring 20. Therefore, when the rotating ring 20 is raised or lowered, the sliding block 25 can be driven to move by the connecting rod 21. Two limit rings 24 are fixedly provided on the outer wall of the insertion rod 22, and the first connecting block 4 is located between the two limit rings 24 to prevent the insertion rod 22 from falling off. A first spring 23 is provided on the outer wall of the insertion rod 22, and the two ends of the first spring 23 are respectively fixedly connected to the inner limit ring 24 and the side of the first connecting block 4 close to each other, which can provide a reset force for the insertion rod 22.

[0053] The clamping member includes two second guide rods 27 fixedly arranged at the top of the sliding block 25, and the outer walls of the two second guide rods 27 are slidingly sleeved with the same wedge block 29, and the outer wall of the insertion rod 22 is provided with a plurality of limit grooves 26 used in conjunction with the wedge blocks 29. When the wedge blocks 29 are inserted into the limit grooves 26, the insertion rod 22 can be fixed. The outer wall of the second guide rod 27 is sleeved with a second spring 28, and the two ends of the second spring 28 are respectively fixedly connected to the top of the second guide rod 27 and the top of the wedge block 29, which can provide a reset force for the wedge block 29. When the insertion rod 22 needs to be removed, it is only necessary to pull the wedge block 29 outward to disengage it from the limit groove 26, and the insertion rod 22 can move freely in the sliding block 25.

[0054] First, use a drilling rig to drill a hole in the construction area, and place the mounting seat 6 on the corresponding hole. During the placement process, the mounting seat 6 can be pulled to drive the plug plate 5 to move in the connecting seat 3. The movement of the mounting seat 6 can also drive the plug rod 22 to move through the limiting ring 24 and the first connecting block 4. During the movement, the wedge block 29 can be driven to move upward and compress the second spring 28. When the wedge block 29 corresponds to the limiting groove 26, the wedge block 29 can be reset downward under the action of the second spring 28 and stuck in the limiting groove 26. At the same time, the rotating seat 8 is pulled according to the drilling angle to install The first nut ring 19 is rotated in the seat 6 to adjust the pipe entry angle. After the adjustment is completed, the first nut ring 19 is rotated, and the first nut ring 19 can move downward on the outer screw 17. The downward movement of the first nut ring 19 can drive the rotating ring 20 to move downward. During the downward movement of the rotating ring 20, the sliding block 25 can be driven to move through the connecting rod 21. During the movement of the sliding block 25, the insertion rod 22 can be pushed to move through the wedge block 29, which can drive the insertion rod 22 to be inserted into the corresponding insertion hole 15 until one end of the insertion rod 22 contacts the rotating seat 8, so that the rotating seat 8 can be fixed in the mounting seat 6;

[0055] Then, the outer cylinder 7 is inserted into the mounting seat 6 and slowly inserted into the hole. After it is completely inserted to the bottom, the casing material is applied between the outer cylinder 7 and the hole. During the adding process, the two clamping plates 10 are driven by the bolts 11 to approach each other to clamp the outer cylinder 7. At the same time, the rotating seat 8 can drive the sliding rod 14 to slide in the sleeve rod 30 during the rotation of the mounting seat 6, and the universal ball 13 rotates in the fixed seat 12, and drives the other end of the sliding rod 14 to move downward through the sleeve rod 30, which can drive the fixed seat 12 to slide on the second nut ring 31. After the adjustment is completed, it is fixed by screws, and then the motor 16 is started to drive the first reciprocating screw 18 to rotate. The rotation of the first reciprocating screw 18 can drive the second nut ring 31 to reciprocate up and down. The movement of the second nut ring 31 can drive the sleeve rod 30 to rotate on the fixed block 2 through the sliding rod 14 and the sleeve rod 30, and the clamping plate 10 is driven to move up and down by the lever principle, thereby driving the outer cylinder 7 to move up and down reciprocatingly, reducing the gap between the casing materials;

[0056] Secondly, the core rod 33 is placed in the inner tube 39, and the position of the pull rope relative to the outer tube 7 can be used to determine whether the discharge hole 34 corresponds to the second nozzle 40, and the external air source is started to inflate the airbag 35. During the inflation process, the airbag 35 expands, which can fix the core rod 33 in the inner tube 39, and then the external filling equipment is started to inject grout, and the slurry can be ejected outward through the second nozzle 40, the fixed tube 46, the sliding tube 47 and the first nozzle 38 in sequence;

[0057] When it is necessary to adjust the spraying angle of the first nozzle 38, the motor in the top ring 32 is started to drive the second reciprocating screw 41 to rotate forwardly. The rotation of the second reciprocating screw 41 can drive the gear 45 to rotate through the one-way bearing. The rotation of the gear 45 can drive the gear ring 43 to rotate, thereby driving the inner cylinder 39 to rotate. The rotation of the inner cylinder 39 can drive the second nozzle 40 to move. During the movement of the second nozzle 40, the sliding tube 47 can be driven to slide in the fixed tube 46, and the second nozzle 40 can be rotated in the inner cylinder 39. At the same time, the first nozzle 38 rotates in the outer cylinder 7 to adjust the horizontal spraying angle of the first nozzle 38, or the second reciprocating screw 41 can be driven by the motor to rotate in the opposite direction. The reverse rotation of the second reciprocating screw 41 can limit the ball nut in the second connecting block 42 through the one-way bearing, so that the reverse rotation of the second reciprocating screw 41 can drive the second connecting block 42 to move up and down. The lifting and lowering of the second connecting block 42 can adjust the up and down spraying angles of the first nozzle 38;

[0058] Then, the core rod 33 is pulled upward in sequence as required to adjust the grouting position.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A localized grouting device suitable for reinforcing a fault zone of a tunnel, characterized in that: It comprises a support seat (1), a connecting seat (3) is provided on the top of the support seat (1), plug plates (5) are slidably provided on both sides of the connecting seat (3), an outer end of the plug plate (5) is fixedly connected to a mounting seat (6), a rotating seat (8) is embedded in the mounting seat (6), and an outer cylinder (7) is provided in the rotating seat (8); A fixing assembly, arranged on the connecting seat (3) and used for fixing the two rotating seats (8) at the same time; A lifting assembly is arranged on the connecting seat (3) and is used to drive the outer cylinder (7) to move up and down reciprocatingly to reduce the gap in the casing material; A core rod (33), the core rod (33) being arranged in an outer tube (7), the outer wall of the outer tube (7) being embedded with a plurality of first nozzles (38), the outer wall of the core rod (33) being provided with discharge holes (34) corresponding to the first nozzles (38), both ends of the outer wall of the core rod (33) being provided with air bags (35), a second connecting tube (37) being fixedly provided through the top of the core rod (33), the second connecting tube (37) being in communication with the two air bags (35), the top end of which is connected to an external air source through a pipeline and is used for fixing the core rod (33) in the outer tube (7), the top of the core rod (33) being in communication with a first connecting tube (36), the top end of which is connected to an external filling device through a pipeline; The adjustment mechanism is arranged in the outer cylinder (7) and is used to adjust the spray direction of the first nozzle (38).

2. The localized grouting device for strengthening the fault zone of a tunnel according to claim 1, characterized in that: The fixing assembly comprises an external screw (17) fixedly arranged on the top of the connecting seat (3); the outer wall of the external screw (17) is threadedly sleeved with a first nut ring (19); the outer wall of the first nut ring (19) is rotatably sleeved with a rotating ring (20); a first connecting block (4) is fixedly arranged on the top of the plug plate (5); a plug rod (22) is slidably penetrated through one side of the first connecting block (4); a plug hole (15) corresponding to the plug rod (22) is formed on the outer wall of the mounting seat (6); one end of the plug rod (22) penetrates the plug hole (15) and contacts the rotating seat (8); and the ends of the two plug rods (22) close to each other are connected to the rotating ring (20).

3. The localized grouting device for reinforcing the fault zone of a tunnel according to claim 2, characterized in that: A sliding block (25) is slidably provided on the top of the connecting seat (3); the insertion rod (22) is slidably provided inside the sliding block (25) and is clamped with the sliding block (25) through a clamping piece; a connecting rod (21) is rotatably provided between the sliding block (25) and the rotating ring (20); two limiting rings (24) are fixedly sleeved on the outer wall of the insertion rod (22); the first connecting block (4) is located between the two limiting rings (24); a first spring (23) is sleeved on the outer wall of the insertion rod (22); two ends of the first spring (23) are respectively fixedly connected to the inner limiting ring (24) and the mutually adjacent side of the first connecting block (4).

4. The localized grouting device for strengthening the fault zone of a tunnel according to claim 3, characterized in that: The clamping member comprises two second guide rods (27) fixedly arranged on the top of the sliding block (25); the outer walls of the two second guide rods (27) are slidingly sleeved with a same wedge block (29); the outer wall of the insertion rod (22) is provided with a plurality of limit grooves (26) for use with the wedge blocks (29); the outer wall of the second guide rod (27) is sleeved with a second spring (28); the two ends of the second spring (28) are respectively fixedly connected to the top of the second guide rod (27) and the top of the wedge block (29).

5. The localized grouting device for strengthening the fault zone of a tunnel according to claim 2, characterized in that: The lifting assembly comprises two fixed blocks (2) fixedly arranged between a support seat (1) and a connecting seat (3); a sleeve rod (30) is rotatably arranged in the fixed block (2); sliding rods (14) are slidably arranged at both ends of the sleeve rod (30); a universal ball (13) is fixedly arranged at the outer end of the sliding rod (14); a fixed seat (12) is embedded in the outer wall of the universal ball (13); two clamping plates (10) are arranged on the outer wall of the outer cylinder (7); both ends of the two clamping plates (10) are fixedly connected by bolts (11); and the two clamping plates (10) are fixedly arranged in a fixed manner. The outer wall of the outer cylinder (7) is fixed, and a plurality of first guide rods (9) are slidably provided on the top of the inner clamping plate (10), and the tops of the plurality of first guide rods (9) are fixedly connected to the rotating seat (8). The fixed seat (12) located on the outer side is fixedly connected to the corresponding clamping plate (10), and a second nut ring (31) is liftably provided on the top of the support seat (1), and the two inner fixed seats (12) are slidably provided on the second nut ring (31), and one side of the fixed seat (12) is fixedly connected to the second nut ring (31) by a screw.

6. The localized grouting device for reinforcing the fault zone of a tunnel according to claim 5, characterized in that: A first reciprocating screw (18) is rotatably provided through the top of the connecting seat (3) and the external screw (17); a motor (16) is fixedly provided on the top of the connecting seat (3); an output end of the motor (16) is fixedly connected to the first reciprocating screw (18); and the second nut ring (31) is threadedly sleeved on the first reciprocating screw (18).

7. The localized grouting device for strengthening the fault zone of a tunnel according to claim 6, characterized in that: The regulating mechanism comprises an inner cylinder (39) arranged in an outer cylinder (7), the core rod (33) being slidably arranged in the inner cylinder (39), a plurality of second nozzles (40) corresponding to the first nozzles (38) being embedded in the outer wall of the inner cylinder (39), a sliding tube (47) being provided on the inner side of the first nozzle (38), a fixed tube (46) being slidably sleeved on the outer wall of the sliding tube (47), one end of the fixed tube (46) being connected to the second nozzle (40), and a driving assembly being provided in the outer cylinder (7) for driving the inner cylinder (39) to rotate and move up and down.

8. The localized grouting device for reinforcing the fault zone of a tunnel according to claim 7, characterized in that: The driving assembly comprises a second reciprocating screw (41) rotatably arranged in an outer cylinder (7); a ball nut is slidably sleeved on the outer wall of the second reciprocating screw (41); a second connecting block (42) is slidably arranged on the outer wall of the inner cylinder (39); the second connecting block (42) is slidably arranged in the outer cylinder (7); a top ring (32) is provided at the top of the outer cylinder (7); a motor is provided in the top ring (32); an output end of the motor is fixedly connected to the second reciprocating screw (41) for starting the second reciprocating screw (41) to rotate.

9. The localized grouting device for reinforcing the fault fracture zone of a tunnel according to claim 8, characterized in that: The outer wall of the inner cylinder (39) is fixedly sleeved with a gear ring (43), the outer wall of the inner cylinder (39) is rotatably sleeved with a sliding seat (44), a gear (45) meshing with the gear ring (43) is rotatably provided in the sliding seat (44), a sliding ring is provided in the gear (45) via a one-way bearing, and the sliding ring is slidably sleeved on the second reciprocating screw (41).

10. The construction method of the localized grouting device for reinforcing the fault fracture zone of a tunnel according to claim 8, characterized in that: The following steps are involved: S1. First, use a drilling machine to drill holes in the construction area and place the mounting base (6) on the corresponding holes; S2, then, insert the outer cylinder (7) into the mounting seat (6), and slowly insert it into the hole. After it is completely inserted to the bottom, a casing material is applied between the outer cylinder (7) and the hole. During the adding process, the motor (16) is started to drive the outer cylinder (7) to move up and down reciprocatingly, thereby reducing the gap between the casing materials; S3, then placing the core rod (33) in the inner tube (39), and starting the external air source to inflate the air bag (35), fixing the core rod (33) in the inner tube (39), and then starting the external injection equipment to inject grout; S4. When it is necessary to adjust the spraying angle of the first spray head (38), the motor in the top ring (32) is started to drive the inner cylinder (39) to rotate or move up and down to adjust the spraying angle of the first spray head (38); S5, and then pull the core rod (33) upwards in sequence as needed to adjust its grouting position.

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