Tunnel mjs construction method foundation reinforcement device and method of use thereof

Abstract

A tunnel MJS construction method foundation reinforcing device and a method for using the same, the reinforcing device comprising a rack, a grouting machine, an infrared emitter, an infrared receiver, a first mounting assembly, a second mounting assembly, the infrared emitter being rotatably connected to one side of a grouting rod on the grouting machine through the first mounting assembly, the infrared emitter being coaxial with the grouting rod on the grouting machine when the first mounting assembly is rotated to a first position, the second mounting assembly comprising a positioning disc, a gear and a plurality of support rods, the infrared receiver and the gear being coaxially arranged on the positioning disc, the support rod comprising a fixed rod and a rack, one end of the rack being engaged with the gear, and the other end of the rack being fixedly connected to one end of the fixed rod, the gear being used to drive the plurality of fixed rods to synchronously extend until the other end face of the fixed rod is in contact with the inner wall of the grouting hole. The design realizes the alignment of the grouting hole and the grouting hole through the matching of the infrared emitter and the infrared receiver, and has small alignment error and good precision.

Description

Technical Field

[0001] This invention belongs to the field of pile foundation construction technology, specifically relating to a tunnel MJS method foundation reinforcement device and its usage method, which is suitable for improving the alignment accuracy of grouting rods and grouting holes. Background Technology

[0002] Before constructing a tunnel side passage, the MJS method is generally required to grout the annular cross-section around the side passage to improve the soil quality through foundation reinforcement and meet construction requirements. However, traditional MJS grouting machines can only reinforce the foundation in the vertical direction, and the space inside the tunnel is small, making it inconvenient to move them and unable to meet the construction requirements of different heights and angles within the grouting surface.

[0003] Chinese Patent Publication No. CN105840198A discloses a device for MJS method foundation reinforcement in tunnels. This device achieves vertical movement of the grouting machine through the clamping and loosening of anchors and the action of the steel strand climbing cylinder. It achieves lateral movement of the grouting machine through the grouting machine mounting plate, grouting machine sliding plate, and fine-tuning cylinder, thereby completing the precise adjustment of the grouting rod position. However, in the process of moving the grouting machine to align the grouting rod with the grouting hole, the alignment can only be visually inspected by the staff, resulting in poor alignment accuracy. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned problems in the prior art and to provide a tunnel MJS method foundation reinforcement device with high alignment accuracy between the grouting rod and the grouting hole, as well as its usage method.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A foundation reinforcement device for the MJS tunnel construction method includes a frame and a grouting machine installed inside the frame. The device also includes an infrared transmitter, an infrared receiver, a first mounting assembly, and a second mounting assembly. The infrared transmitter is rotatably connected to one side of a grouting rod on the grouting machine via the first mounting assembly. When the first mounting assembly rotates to a first position, the infrared transmitter is coaxial with the grouting rod on the grouting machine. The second mounting assembly includes a positioning plate, a gear, and multiple support rods. The infrared receiver and the gear are coaxially mounted on the positioning plate. Each support rod includes a fixed rod and a rack. One end of the rack meshes with the gear, and the other end is fixedly connected to one end of the fixed rod. The gear drives multiple fixed rods to extend synchronously until the other end face of the fixed rod contacts the inner wall of the grouting hole.

[0007] The first mounting assembly includes a rotating arm and a motor. One end of the rotating arm is hinged to the middle of one side of the grouting rod, and the other end is connected to an infrared emitter. The motor is used to drive the rotating arm to rotate up and down around the hinge point between it and the grouting rod. The first position of the first mounting assembly is the limit position that the rotating arm can reach by rotating upward.

[0008] The other end of the fixing rod is provided with an installation cavity. A piston is slidably disposed inside the installation cavity. The piston divides the installation cavity into a first cavity and a second cavity. The second cavity contains glue, and a glue inlet / outlet hole is opened on the side wall of the second cavity. The first cavity is provided with a power mechanism. The power mechanism is used to push the piston towards the second cavity after the end face of the other end of the fixing rod contacts the inner wall of the grouting hole, so that the glue flows out from the glue inlet / outlet hole.

[0009] The second cavity sidewall is also provided with an annular reaction hole, which is arranged around the glue inlet and outlet hole, and the inside of the annular reaction hole is connected to the inside of the glue desolvation liquid storage cylinder located outside the fixing rod through a pipeline.

[0010] The power mechanism is an airbag connected to an air pump. A non-woven bag is installed inside the annular reaction hole, and the non-woven bag is filled with quicklime that can react with the desiccant to generate heat.

[0011] The reinforcement device also includes a PLC controller. The signal input terminal of the PLC controller is connected to the signal output terminal of the infrared receiver. The signal output terminal of the PLC controller is also connected to the signal input terminal of the electromagnetic switch valve installed on the pipeline and the buzzer installed on the top of the frame.

[0012] A first fixing block is fixed to the other end of the rotating arm, and a second mounting block is fixed to the positioning plate. The second mounting block and the first fixing block have the same structure. Both the second mounting block and the first fixing block have slots. The infrared transmitter is rotatably disposed inside the opening end of the slot on the first fixing block, and the infrared receiver is rotatably disposed inside the opening end of the slot on the second mounting block.

[0013] Cleaning cotton is provided inside the groove on the first fixing block and inside the groove on the second mounting block.

[0014] The cleaning cotton is connected to the inside of the cleaning agent storage cylinder via a connecting pipe, and a switch assembly is provided on the connecting pipe.

[0015] A method for using a foundation reinforcement device for the MJS tunnel construction method, the method comprising the following steps in sequence:

[0016] S1. Complete the placement of the infrared receiver and the adjustment of the position of the infrared transmitter;

[0017] The infrared receiver placement step is as follows: first, the entire second mounting assembly is placed inside the grouting hole, and then the gear is rotated. The gear rotation drives multiple fixing rods to extend synchronously until the other end faces of the multiple fixing rods abut against the inner wall of the grouting hole.

[0018] The specific steps for adjusting the position of the infrared emitter are as follows: rotate the first mounting component to the first position so that the infrared rays emitted by the infrared emitter are coaxial with the central axis of the grouting rod;

[0019] S2. Continuously adjust the position of the grouting machine until the infrared transmitter receives infrared light from the infrared transmitter. At this time, the grouting rod of the grouting machine is aligned with the grouting hole.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The present invention provides a foundation reinforcement device for the MJS tunnel construction method, comprising a frame, a grouting machine, an infrared transmitter, an infrared receiver, a first mounting assembly, and a second mounting assembly. The infrared transmitter is rotatably connected to one side of the grouting rod on the grouting machine via the first mounting assembly. When the first mounting assembly is rotated to a first position, the infrared transmitter is coaxial with the grouting rod on the grouting machine. The second mounting assembly includes a positioning plate, a gear, and multiple support rods. The infrared receiver and the gear are coaxially mounted on the positioning plate. The support rods include a fixed rod and a rack. One end of the rack meshes with the gear, and the other end is fixedly connected to one end of the fixed rod. The gear is used to drive the multiple fixed rods. The fixed rod extends synchronously until its other end face contacts the inner wall of the grouting hole. The method of using this device is as follows: first, fix the second mounting component inside the grouting hole and rotate the first mounting component to the first position. Then, continuously adjust the position of the grouting machine until the infrared transmitter receives an infrared signal, indicating that the grouting rod of the grouting machine is aligned with the grouting hole. This design achieves alignment between grouting holes through matching the infrared transmitter and receiver, resulting in small alignment errors and high accuracy. After alignment, the first mounting component is rotated back to its original position and the second mounting component is removed, thus not affecting subsequent grouting processes. Therefore, this invention can improve the alignment accuracy between grouting holes without affecting subsequent grouting processes.

[0022] 2. In the tunnel MJS method foundation reinforcement device of the present invention, the first mounting component includes a first fixing block, and the second mounting component includes a second fixing block. Both the second mounting block and the first fixing block have slots. An infrared transmitter is rotatably mounted inside the opening end of the slot on the first fixing block, and an infrared receiver is rotatably mounted inside the opening end of the slot on the second mounting block. Cleaning cotton is placed inside the slots on both the first fixing block and the second mounting block. When the infrared transmitter and receiver are rotated towards the slots, the sponge pads inside the slots rub against the infrared transmitter and receiver, cleaning surface dust and ensuring normal operation and high reliability of the infrared transmitter and receiver. Therefore, the present invention has a surface cleaning function for the infrared transmitter and receiver, and high operational reliability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the first mounting component in this invention.

[0025] Figure 3 This is a schematic diagram of the structure of the second mounting component in this invention.

[0026] Figure 4 for Figure 3 A schematic diagram of the installation cavity.

[0027] Figure 5 for Figure 4 Enlarged schematic diagram of section A in the middle.

[0028] Figure 6 This is a schematic diagram of the structure of the second mounting block in this invention.

[0029] In the diagram, the components are: frame 1, grouting machine 2, grouting rod 21, infrared transmitter 3, first mounting assembly 4, rotating arm 41, motor 42, second mounting assembly 5, positioning plate 51, gear 52, support rod 53, fixing rod 531, rack 532, mounting cavity 54, piston 541, first cavity 542, second cavity 543, glue inlet / outlet hole 544, power mechanism 545, annular reaction hole 546, pipeline 547, glue degreasing liquid storage cylinder 548, non-woven bag 549, PLC controller 6, electromagnetic switch valve 61, buzzer 62, first fixing block 7, slot 71, cleaning cotton 72, connecting pipe 73, cleaning agent storage cylinder 74, switch assembly 75, second mounting block 8, and infrared receiver 9. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] See Figures 1 to 6 A foundation reinforcement device for the MJS tunnel construction method is disclosed. The reinforcement device includes a frame 1 and a grouting machine 2 installed inside the frame 1. The reinforcement device also includes an infrared transmitter 3, an infrared receiver 9, a first mounting assembly 4, and a second mounting assembly 5. The infrared transmitter 3 is rotatably connected to one side of the grouting rod 21 on the grouting machine 2 through the first mounting assembly 4. When the first mounting assembly 4 is rotated to a first position, the infrared transmitter 3 is coaxial with the grouting rod 21 on the grouting machine 2. The second mounting assembly 5 includes a positioning plate 51, a gear 52, and multiple support rods 53. The infrared receiver 9 and the gear 52 are coaxially mounted on the positioning plate 51. The support rod 53 includes a fixed rod 531 and a rack 532. One end of the rack 532 meshes with the gear 52, and the other end is fixedly connected to one end of the fixed rod 531. The gear 52 is used to drive the multiple fixed rods 531 to extend synchronously until the other end face of the fixed rod 531 contacts the inner wall of the grouting hole.

[0032] The first mounting assembly 4 includes a rotating arm 41 and a motor 42. One end of the rotating arm 41 is hinged to the middle of one side of the grouting rod 21, and the other end is connected to the infrared emitter 3. The motor 42 is used to drive the rotating arm 41 to rotate up and down around the hinge point with the grouting rod 21. The first position of the first mounting assembly 4 is the limit position that the rotating arm 41 can reach by rotating upward.

[0033] The other end of the fixing rod 531 is provided with an installation cavity 54. A piston 541 is slidably disposed inside the installation cavity 54. The piston 541 divides the installation cavity 54 into a first cavity 542 and a second cavity 543. The second cavity 543 is provided with glue. A glue inlet / outlet hole 544 is opened on the side wall of the second cavity 543. The first cavity 542 is provided with a power mechanism 545. The power mechanism 545 is used to push the piston 541 toward the second cavity 543 after the end face of the other end of the fixing rod 531 contacts the inner wall of the grouting hole, so that the glue flows out from the glue inlet / outlet hole 544.

[0034] The second cavity 543 is also provided with an annular reaction hole 546 on its side wall. The annular reaction hole 546 is arranged around the glue inlet / outlet hole 544. The inside of the annular reaction hole 546 is connected to the inside of the glue desolvation liquid storage cylinder 548 located outside the fixing rod 531 through a pipe 547.

[0035] The power mechanism 545 is an airbag connected to the air pump. The annular reaction hole 546 is provided with a non-woven bag 549, which is filled with quicklime that can react with the desiccant to generate heat.

[0036] The reinforcement device also includes a PLC controller 6, the signal input terminal of which is connected to the signal output terminal of the infrared receiver 9, and the signal output terminal of the PLC controller 6 is connected to the signal input terminals of the electromagnetic switch valve 61 installed on the pipeline 547 and the buzzer 62 installed on the top of the frame 1.

[0037] A first fixing block 7 is fixed to the other end of the rotating arm 41, and a second mounting block 8 is fixed to the positioning plate 51. The second mounting block 8 and the first fixing block 7 have the same structure. Both the second mounting block 8 and the first fixing block 7 have slots 71. The infrared transmitter 3 is rotatably disposed inside the opening end of the slot 71 on the first fixing block 7, and the infrared receiver 9 is rotatably disposed inside the opening end of the slot 71 on the second mounting block 8.

[0038] Cleaning cotton 72 is provided inside the slot 71 on the first fixing block 7 and inside the slot 71 on the second mounting block 8.

[0039] The cleaning cotton 72 is connected to the cleaning agent storage cylinder 74 via a connecting pipe 73, and a switch assembly 75 is provided on the connecting pipe 73.

[0040] A method for using a foundation reinforcement device for the MJS tunnel construction method, the method comprising the following steps in sequence:

[0041] S1. Complete the placement of the infrared receiver 9 and the position adjustment of the infrared transmitter 3;

[0042] The infrared receiver 9 is placed as follows: first, the entire second mounting assembly 5 is placed inside the grouting hole, and then the gear 52 is rotated. The rotation of the gear 52 drives multiple fixing rods 531 to extend synchronously until the other end faces of the multiple fixing rods 531 are in contact with the inner wall of the grouting hole.

[0043] The specific steps for adjusting the position of the infrared emitter 3 are as follows: rotate the first mounting component 4 to the first position so that the infrared rays emitted by the infrared emitter 3 are coaxial with the central axis of the grouting rod 21;

[0044] S2. Continuously adjust the position of the grouting machine 2 until the infrared receiver 9 receives infrared rays from the infrared transmitter 3. At this time, the grouting rod 21 of the grouting machine 2 is aligned with the grouting hole.

[0045] Example 1:

[0046] See Figures 1 to 6A foundation reinforcement device for tunnel MJS method includes a frame 1, a grouting machine 2, an infrared transmitter 3, an infrared receiver 9, a first mounting assembly 4, a second mounting assembly 5, and a PLC controller 6. The grouting machine 2 is vertically and vertically mounted inside the frame 1 and can rotate 360° omnidirectionally within the frame. The first mounting assembly 4 includes a rotating arm 41 and a motor 42. One end of the rotating arm 41 is hinged to the middle of one side of the grouting rod 21, and the other end is connected to the infrared transmitter 3. The motor 42 drives the rotating arm 41 to rotate up and down around the hinge point with the grouting rod 21. The infrared rays emitted by the infrared transmitter 3 are coaxial with the central axis of the grouting rod 21 on the grouting machine 2 when the rotating arm 41 rotates upward to its maximum position. The second mounting assembly 5 includes a positioning plate 51, a gear 52, and two support rods. 53. The infrared receiver 9 and gear 52 are coaxially arranged. The positioning disk 51 can be a hollow shell or a solid block. When the positioning disk 51 is a hollow shell, the infrared receiver 9 and gear 52 are respectively arranged on the outer wall and inside of the positioning disk 51. When the positioning disk 51 is a solid block, the infrared receiver 9 and gear 52 are respectively arranged on the front outer wall and back outer wall of the positioning disk 51. The two support rods 53 are respectively arranged above and below the gear 52. The support rod 53 includes a fixed rod 531 and a rack 532. One end of the rack 532 meshes with the gear 52, and the other end is fixedly connected to one end of the fixed rod 531. The PLC controller 6 is installed on the frame 1. Its signal input terminal is connected to the signal output terminal of the infrared receiver 9, and its signal output terminal is connected to the signal input terminal of the buzzer 62 arranged on the top of the frame 1.

[0047] The method of using the above-mentioned tunnel MJS method foundation reinforcement device is as follows:

[0048] S1. First, place the second mounting component 5 into the grouting hole, then manually or by using a drive motor to rotate the gear 52. The rotation of the gear 52 will drive the two fixing rods 531 to extend synchronously until the other end faces of the two fixing rods 531 abut against the inner walls of the two sides of the grouting hole, thus fixing the entire second mounting component 5 and completing the placement of the infrared receiver 9.

[0049] S2. Start motor 42 drives rotating arm 41 to rotate upward to the limit position that rotating arm 41 can reach. At this time, the infrared rays emitted by infrared emitter 3 are coaxial with the central axis of grouting rod 21 on grouting machine 2, and the position adjustment of infrared emitter 3 is completed.

[0050] S3. After placing the infrared receiver 9 and adjusting the position of the infrared transmitter 3, continuously adjust the position of the grouting machine 2 until the infrared receiver 9 receives infrared light from the infrared transmitter 3. The infrared receiver 9 sends a signal to the PLC controller 6, and the PLC controller 6 controls the buzzer 62 to issue a prompt, reminding the staff that the grouting rod 21 is now aligned with the grouting hole.

[0051] Before grouting, remove the second mounting component 5 from the grouting hole and drive the infrared transmitter 3 to swing back to its original position, then the subsequent grouting work can begin.

[0052] Example 2:

[0053] The difference from Example 1 is as follows:

[0054] The other end of the fixing rod 531 has an internal mounting cavity 54. A piston 541 is slidably mounted inside the mounting cavity 54, dividing it into a first cavity 542 and a second cavity 543. The first cavity 542 contains a power mechanism 545, which is an airbag connected to an air pump. The second cavity 543 contains adhesive, and an adhesive inlet / outlet hole 544 is provided on its side wall. The side wall of the second cavity 543 also has... An annular reaction hole 546 is arranged around the glue inlet / outlet hole 544. The interior of the annular reaction hole 546 is connected to the interior of the glue dissolving liquid storage cylinder 548 located outside the fixed rod 531 through a pipe 547. A non-woven bag 549 is arranged inside the annular reaction hole 546, and the non-woven bag 549 is filled with quicklime. An electromagnetic switch valve 61 is provided on the pipe 547, and the signal input terminal of the electromagnetic switch valve 61 is connected to the signal output terminal of the PLC controller 6.

[0055] To address the issue of insecure locking between the fixing rod 531 and the inner wall of the grouting hole, adhesive is provided. When the other end face of the fixing rod 531 abuts against the inner wall of the grouting hole, an air pump is used to inflate the airbag. The expansion of the airbag pushes the piston 541 towards the second chamber 543, causing the adhesive to be squeezed out from the adhesive inlet / outlet hole 544. After the adhesive comes into contact with the air, it solidifies on the inner wall of the grouting hole, ensuring the secure fixing of the entire second mounting assembly 5 and preventing the infrared receiver 9 from moving and affecting the alignment accuracy.

[0056] To facilitate the disassembly of the second mounting component 5, a degreasing agent is provided. When the PLC controller 6 receives a signal from the infrared receiver 9, it controls the electromagnetic switch valve 61 to open. At this time, the degreasing agent inside the degreasing agent storage cylinder 548 enters the annular reaction hole 546. The degreasing agent is water. Water can soften the glue layer formed after the glue has solidified. Moreover, the water reacts with the quicklime inside the annular reaction hole 546 to generate a large amount of heat, which can greatly accelerate the softening effect of water on the glue layer, making it easier for the fixing rod 531 to separate from the inner wall of the grouting hole. The water in the degreasing agent storage cylinder 548 and the glue in the second chamber 543 can be replenished for reuse.

[0057] Example 3:

[0058] The difference from Example 1 is as follows:

[0059] A first fixing block 7 is fixed to the other end of the rotating arm 41, and a second mounting block 8 is fixed to the positioning plate 51. The second mounting block 8 and the first fixing block 7 have the same structure. Both the second mounting block 8 and the first fixing block 7 have slots 71. The infrared transmitter 3 is rotatably disposed inside the opening end of the slot 71 on the first fixing block 7. The infrared transmitter 3 is driven to rotate by the first motor. The infrared receiver 9 is rotatably disposed inside the opening end of the slot 71 on the second mounting block 8. The infrared receiver 9 is driven to rotate by the second motor. Cleaning cotton 72 is disposed inside the slot 71 on the first fixing block 7 and inside the slot 71 on the second mounting block 8. The cleaning cotton 72 is connected to the cleaning agent storage cylinder 74 through a connecting pipe 73. A switch assembly 75 is disposed on the connecting pipe 73.

[0060] To protect the infrared transmitter 3 and the infrared receiver 9, after the alignment work is completed, the PLC controller drives the first motor and the second motor to rotate the infrared transmitter 3 and the infrared receiver 9 into the slot 71, so as to prevent damage to the infrared transmitter 3 and the infrared receiver 9 during the grouting process.

[0061] To clean the infrared transmitter 3 and the infrared receiver 9, a cleaning cotton 72 is provided inside the slot 71. After being flipped over, the infrared transmitter 3 and the infrared receiver 9 are squeezed into the cleaning cotton 72, and the cleaning cotton 72 removes the dust adhering to the outside. If there is concrete or even solidified concrete droplets adhering to the outside of the infrared transmitter 3 and the infrared receiver 9, the switch assembly 75 is turned on, and the cleaning agent flows into the cleaning cotton 72, enhancing the cleaning effect of the cleaning cotton 72. The cleaning cotton 72 is a replaceable sponge pad, which is fixed inside the slot 71 by a buckle. The cleaning agent can be a mixture of vinegar and water.

Claims

1. A foundation reinforcement device for the MJS tunnel construction method, the reinforcement device comprising a frame (1) and a grouting machine (2) disposed inside the frame (1), characterized in that: The reinforcement device also includes an infrared transmitter (3), an infrared receiver (9), a first mounting assembly (4), and a second mounting assembly (5). The infrared transmitter (3) is rotatably connected to one side of the grouting rod (21) on the grouting machine (2) through the first mounting assembly (4). When the first mounting assembly (4) is rotated to the first position, the infrared transmitter (3) is coaxial with the grouting rod (21) on the grouting machine (2). The second mounting assembly (5) includes a positioning plate (51) and a gear (5). 2) Multiple support rods (53), the infrared receiver (9) and gear (52) are coaxially arranged on the positioning plate (51). The support rod (53) includes a fixed rod (531) and a rack (532). One end of the rack (532) meshes with the gear (52), and the other end is fixedly connected to one end of the fixed rod (531). The gear (52) is used to drive multiple fixed rods (531) to extend synchronously until the other end face of the fixed rod (531) contacts the inner wall of the grouting hole. The other end of the fixing rod (531) is provided with an installation cavity (54). A piston (541) is slidably arranged inside the installation cavity (54). The piston (541) divides the installation cavity (54) into a first cavity (542) and a second cavity (543). The second cavity (543) is provided with glue. A glue inlet / outlet hole (544) is opened on the side wall of the second cavity (543). The first cavity (542) is provided with a power mechanism (545). The power mechanism (545) is used to push the piston (541) toward the second cavity (543) after the end face of the other end of the fixing rod (531) contacts the inner wall of the grouting hole, so that the glue flows out from the glue inlet / outlet hole (544).

2. The foundation reinforcement device for tunnel MJS method according to claim 1, characterized in that: The first mounting assembly (4) includes a rotating arm (41) and a motor (42). One end of the rotating arm (41) is hinged to the middle of one side of the grouting rod (21), and the other end is connected to the infrared emitter (3). The motor (42) is used to drive the rotating arm (41) to rotate up and down around the hinge point between it and the grouting rod (21). The first position of the first mounting assembly (4) is the limit position that the rotating arm (41) can reach by rotating upward.

3. The foundation reinforcement device for tunnel MJS method according to claim 1, characterized in that: The second cavity (543) is also provided with an annular reaction hole (546) on its side wall. The annular reaction hole (546) is arranged around the glue inlet / outlet hole (544). The inside of the annular reaction hole (546) is connected to the inside of the glue desolvation liquid storage cylinder (548) located outside the fixed rod (531) through a pipe (547).

4. The foundation reinforcement device for tunnel MJS method according to claim 3, characterized in that: The power mechanism (545) is an airbag connected to the air pump. The annular reaction hole (546) is provided with a non-woven bag (549), and the non-woven bag (549) is filled with quicklime that can react with the desiccant to generate heat.

5. A foundation reinforcement device for tunnel MJS method according to claim 3 or 4, characterized in that: The reinforcement device also includes a PLC controller (6), the signal input terminal of which is connected to the signal output terminal of the infrared receiver (9), and the signal output terminal of the PLC controller (6) is connected to the signal input terminal of the electromagnetic switch valve (61) installed on the pipeline (547) and the buzzer (62) installed on the top of the frame (1).

6. A foundation reinforcement device for tunnel MJS method according to claim 2, characterized in that: A first fixing block (7) is fixed on the other end of the rotating arm (41), and a second mounting block (8) is fixed on the positioning plate (51). The second mounting block (8) and the first fixing block (7) have the same structure. Both the second mounting block (8) and the first fixing block (7) have slots (71). The infrared transmitter (3) is rotatably disposed inside the opening end of the slot (71) on the first fixing block (7), and the infrared receiver (9) is rotatably disposed inside the opening end of the slot (71) on the second mounting block (8).

7. A foundation reinforcement device for tunnel MJS method according to claim 6, characterized in that: Cleaning cotton (72) is provided inside the groove (71) on the first fixing block (7) and inside the groove (71) on the second mounting block (8).

8. A foundation reinforcement device for tunnel MJS method according to claim 7, characterized in that: The cleaning cotton (72) is connected to the cleaning agent storage cylinder (74) via a connecting pipe (73), and a switch assembly (75) is provided on the connecting pipe (73).

9. The method of using the tunnel MJS method foundation reinforcement device according to claim 1, characterized in that: The method of use includes the following steps in sequence: S1. Complete the placement of the infrared receiver (9) and the position adjustment of the infrared transmitter (3); The infrared receiver (9) placement steps are as follows: first, the entire second mounting assembly (5) is placed inside the grouting hole, and then the gear (52) is rotated. The gear (52) rotates and drives multiple fixing rods (531) to extend synchronously until the other end faces of the multiple fixing rods (531) are in contact with the inner wall of the grouting hole. The specific steps for adjusting the position of the infrared emitter (3) are as follows: rotate the first mounting component (4) to the first position so that the infrared rays emitted by the infrared emitter (3) are coaxial with the central axis of the grouting rod (21); S2. Continuously adjust the position of the grouting machine (2) until the infrared receiver (9) receives infrared rays from the infrared transmitter (3). At this time, the grouting rod (21) of the grouting machine (2) is aligned with the grouting hole.

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