Existing tunnel corrugated plate renovation construction method and equipment

Abstract

The invention relates to the technical field of corrugated plate sleeve lining construction, and discloses an existing tunnel corrugated plate renovation construction method and device.According to the method, a large prefabricated corrugated plate is prepared according to the semi-arc shape of a top arc of a to-be-renovated area of a tunnel, then installation construction is conducted within skylight time, a traditional splicing construction mode is replaced, and the construction efficiency is improved. The labor intensity of constructors is relieved, meanwhile, potential safety hazards existing in the splicing operation process at high positions and near contact network equipment are eliminated, the construction efficiency is high, the construction period can be effectively shortened, and the construction cost is reduced; the device comprises a lifting seat, a supporting rod, a pushing rod, a pushing sliding block, a pushing lead screw and a connecting rod, and can be used for conveniently and rapidly transferring a large prefabricated corrugated plate to a mounting position when the construction method is implemented.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated plate lining construction, in particular to a method and equipment for repairing and constructing corrugated plates in existing tunnels. Background Art

[0002] Corrugated plate lining is an effective method for treating cracking and falling blocks, crescent-shaped cracks, insufficient lining thickness, and waterproof board cutting of the second lining in the remediation of existing tunnel defects. The method is to first install the corrugated plate on the inner wall of the tunnel defect location through bolts, and then grouting is injected behind the corrugated plate lining to achieve the reinforcement of the tunnel.

[0003] At present, when repairing existing tunnel defects, the installation of corrugated plates is usually completed by assembling small pieces of corrugated plates with bolts, which is cumbersome and inefficient. Especially when installing corrugated plates at the top arc of the tunnel, the construction efficiency is further reduced due to the high construction position, interference from the contact network equipment position (located a certain distance directly below the center of the top arc), and the difficulty in splicing the arc-shaped corrugated plates. In the process of repairing existing tunnels, the skylight time is limited, and the existing construction method greatly affects the construction progress and prolongs the construction period. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a construction method and equipment for repairing the existing tunnel corrugated plate, which has high construction efficiency and can effectively shorten the construction period.

[0005] The objective of the present invention is achieved through the following technical solutions: The existing tunnel corrugated plate renovation construction method is to first prepare a large piece of prefabricated corrugated plate according to the semi-arc shape of the top arc of the tunnel area to be renovated outside the skylight time; then install and construct it within the skylight time, and the installation and construction process includes the following steps: S1. Move the prefabricated corrugated plate to a set distance position substantially parallel to the corresponding tunnel top arc semi-arc surface; S2, drilling a plurality of installation holes and grouting holes from the inner side of the prefabricated corrugated plate outward, wherein the installation holes penetrate the prefabricated corrugated plate and extend into the tunnel rock layer, and the grouting holes penetrate the prefabricated corrugated plate; S3, driving mounting bolts into the mounting holes, and fixing the prefabricated corrugated plate to the tunnel rock formation through the mounting bolts; S4, injecting grout on the outer side of the prefabricated corrugated plate through the injection holes.

[0006] Furthermore, the method involves a support member, a through pin, and a push member, wherein the support member is arranged at a set distance on one side of the tunnel axis, the support member can be raised and lowered, the push member can be moved transversely and perpendicularly to the tunnel axis, and a connecting member is arranged on the upper inner side of the prefabricated corrugated plate, and the step S1 comprises the following steps: S11, inserting a through pin to rotatably connect the support member to the connecting member, and the prefabricated corrugated plate droops naturally so that the top end of the prefabricated corrugated plate avoids the position of the contact network equipment in the tunnel in a direction perpendicular to the tunnel axis; S12, raising the support member to a set height; S13, the pushing member is moved laterally to push the lower part of the prefabricated corrugated plate to move away from the tunnel axis, the prefabricated corrugated plate is swung so that the top end of the prefabricated corrugated plate extends above the contact network equipment in the tunnel, and at the same time, the supporting member rises cooperatively until the prefabricated corrugated plate is basically parallel to the semi-arc surface of the tunnel top arc.

[0007] Furthermore, after step S4, the through pin is pulled out, and then the supporting member is lowered and the pushing member is returned to its original position.

[0008] Existing tunnel corrugated plate renovation construction equipment, including a lifting seat, a lifting drive mechanism, a horizontal push drive mechanism and a construction component, wherein the construction component includes a support mechanism; The supporting mechanism comprises a support rod, a push rod, a pushing slider, a pushing screw and a connecting rod, one end of the support rod is rotatably connected to the lifting seat, the other end of the support rod is fixedly provided with a supporting member, one end of the push rod is provided with a pushing member, the other end of the push rod is fixedly connected to the pushing slider, the pushing slider is slidably connected to the lifting seat, the pushing screw is rotatably connected to the lifting seat, the pushing screw is threadedly connected to the pushing slider, one end of the connecting rod is rotatably connected to the pushing slider, and the other end of the connecting rod is rotatably connected to the support rod; The lifting drive mechanism is used to drive the lifting seat to move up and down, and the horizontal push drive mechanism is used to drive the pushing screw to rotate.

[0009] Furthermore, the construction component also includes a prefabricated corrugated plate, and the supporting mechanism also includes a through pin. The prefabricated corrugated plate is prefabricated according to the semi-arc shape of the tunnel top arc. The upper inner side of the prefabricated corrugated plate is rotatably connected to the supporting member through the through pin, and the pushing member is adapted to the lower inner side of the prefabricated corrugated plate.

[0010] Furthermore, a roller is rotatably provided on the pushing member, and the roller is rollingly adapted to the inner side of the lower part of the prefabricated corrugated plate.

[0011] Specifically, the construction assembly includes two supporting mechanisms, the two supporting mechanisms are arranged in parallel and opposite to each other, and the distance between the two supporting mechanisms is adapted to the width of the prefabricated corrugated plate.

[0012] Specifically, the construction component also includes a platform mechanism, which includes a construction platform, a horizontal beam, a vertical beam, a transverse hydraulic cylinder, a lifting screw and a lifting motor. The construction platform is arranged between the two supporting mechanisms, the horizontal beam is arranged horizontally, and the vertical beam is arranged vertically. One end of the horizontal beam is fixedly connected to the vertical beam, and the horizontal beam is slidably connected to the lifting seat. The transverse hydraulic cylinder is fixedly installed on the lifting seat, and the piston rod end of the transverse hydraulic cylinder is fixedly connected to the vertical beam. The lifting screw is vertically and rotatably arranged in the vertical beam. The lifting motor is used to drive the lifting screw to rotate. The construction platform is slidably connected to the vertical beam, and the construction platform is threadedly connected to the lifting screw.

[0013] Specifically, there are two construction components, and the two construction components are symmetrically arranged on the lifting seat; The push drive mechanism includes a push motor and two transmission shafts, both ends of the transmission shafts are fixedly sleeved with bevel gears A and bevel gears B, the two transmission shafts are coaxially arranged and rotatably connected to the lifting seat, the push motor is fixedly installed on the lifting seat, and a driving bevel gear is fixedly sleeved on the output shaft of the push motor, and the driving bevel gear is meshed with the two bevel gears A at the same time; the four pushing screws are fixedly sleeved with bevel gears C, one bevel gear B is meshed with the two bevel gears C at the same time, and another bevel gear B is meshed with the other two bevel gears C at the same time.

[0014] Specifically, the lifting drive mechanism is selected from operating tunnel maintenance equipment, which includes an excavator platform that can move on the railway of the tunnel. The excavator platform is connected with a boom and a pitch turntable in sequence, and the lifting seat is installed on the pitch turntable.

[0015] The beneficial effects of the present invention are: The construction method for the treatment of corrugated plates in existing tunnels is to first prepare large prefabricated corrugated plates according to the semi-arc shape of the top arc of the area to be treated in the tunnel outside the skylight time (within the tunnel operation time), and then install and construct them within the skylight time, replacing the traditional splicing construction form, reducing the labor intensity of construction personnel, and eliminating the safety hazards in the splicing process at high places and near contact network equipment. There is no need to waste time on complicated splicing operations, which can effectively improve construction efficiency. In a macro sense, it can effectively shorten the construction period and reduce the cost of the entire tunnel disease treatment project.

[0016] The device for repairing the corrugated plate in an existing tunnel comprises a lifting seat, a support rod, a push rod, a push slider, a push screw and a connecting rod, wherein one end of the support rod is rotatably connected to the lifting seat, the other end of the support rod is fixedly provided with a support member, one end of the push rod is provided with a push member, the other end of the push rod is fixedly connected to the push slider, the push slider is slidably connected to the lifting seat, the push screw and the push slider form a screw nut mechanism, one end of the connecting rod is rotatably connected to the push slider, and the other end of the connecting rod is rotatably connected to the support rod. The device can be used to implement the above construction method, during construction, the upper inner side of the prefabricated corrugated plate is first rotatably connected to the support member, at which time the prefabricated corrugated plate naturally droops, and its top end can avoid the position of the contact network equipment in the existing tunnel in the horizontal direction; then the lifting seat is raised to drive the prefabricated corrugated plate to rise to a set height; then the push screw is rotated to simultaneously drive the push member to extend forward and the support member to swing upward, so as to adjust the posture of the prefabricated corrugated plate, so that it is transferred to a set distance position substantially parallel to the corresponding tunnel top arc semi-arc surface, and the entire transfer process is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the existing tunnel corrugated plate renovation construction equipment of the present invention; Figure 2 It is a structural schematic diagram of the construction components in the existing tunnel corrugated plate renovation construction equipment of the present invention; Figure 3 for Figure 2 A schematic diagram of the structure of the platform mechanism in the construction assembly shown; Figure 4 It is a structural schematic diagram of the horizontal push driving mechanism in the existing tunnel corrugated plate renovation construction equipment of the present invention; Figure 5 It is a structural schematic diagram of the existing tunnel corrugated plate renovation construction equipment of the present invention when hanging prefabricated corrugated plates; Figure 6 It is a structural schematic diagram of the existing tunnel corrugated plate renovation construction equipment of the present invention when installing prefabricated corrugated plates; Figure 7 It is a schematic diagram of the use status of the existing tunnel corrugated plate renovation construction equipment of the present invention; In the figure, 1-lifting seat, 2-support member, 3-pushing member, 4-prefabricated corrugated plate, 5-connecting member, 6-strut, 7-push rod, 8-pushing slider, 9-pushing screw rod, 10-connecting rod, 11-construction platform, 12-cross beam, 13-vertical beam, 14-transverse hydraulic cylinder, 15-lifting screw rod, 16-lifting motor, 17-push motor, 18-transmission shaft, 19-driving bevel gear, 20-bevel gear A, 21-bevel gear B, 22-bevel gear C, 23-excavator platform, 24-boom, 25-pitch turntable. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0019] The existing tunnel corrugated plate renovation construction method provided by the present invention is different from the traditional small-piece corrugated plate splicing installation form. First, a large piece of prefabricated corrugated plate is prepared according to the semi-arc shape of the top arc of the tunnel renovation area outside the skylight time (i.e., during the tunnel operation period); then, the installation construction is carried out within the skylight time. The installation construction process includes the following steps: S1. Move the prefabricated corrugated plate to a set distance position substantially parallel to the corresponding tunnel top arc semi-arc surface; S2. Drill a number of installation holes and grouting holes from the inner side of the prefabricated corrugated plate outward, wherein the installation holes penetrate the prefabricated corrugated plate and extend into the tunnel rock layer, and the grouting holes penetrate the prefabricated corrugated plate; S3, driving mounting bolts into the mounting holes, and fixing the prefabricated corrugated plates to the tunnel rock formations through the mounting bolts; S4. Inject grout on the outer side of the prefabricated corrugated plate through the grouting holes.

[0020] This construction method replaces the traditional splicing construction form by preparing large pieces of prefabricated corrugated plates in advance and installing them as a whole, which reduces the labor intensity of construction workers and eliminates the safety hazards in the splicing process at high places and near contact network equipment. There is no need to waste time on complicated splicing operations, which can effectively improve construction efficiency. On a macro level, a longer distance (or more disease locations) in the longitudinal direction of the tunnel can be completed within each skylight time, which shortens the construction period of tunnel disease remediation as a whole. In addition, it should be noted that in terms of construction cost, although the material cost of this specially customized form of prefabricated corrugated plates is higher than that of small pieces of corrugated plates produced in batches, the labor cost reduced by shortening the construction period is much higher than the increase in material cost. For the entire tunnel disease remediation project, the overall construction cost of this construction method is lower.

[0021] In specific implementation, Figure 5 , Figure 6 As shown, the construction site is also provided with a support member 2, a pin, and a push member 3. The support member 2 is arranged at a set distance on one side of the tunnel axis and can be raised and lowered. The push member 3 can move laterally perpendicular to the tunnel axis. The prefabricated corrugated plate 4 is provided with a connecting member 5 on its inner upper part during production.

[0022] The above step S1 includes the following steps: S11, insert the through pin to make the support member 2 and the connecting member 5 rotatably connected. Figure 5As shown, the prefabricated corrugated plate 4 naturally droops under the action of its own weight, so that the top end of the prefabricated corrugated plate 4 avoids the position of the contact network equipment in the tunnel (in the existing tunnel, the contact network and related equipment are arranged just above the tunnel axis) in the transverse direction perpendicular to the tunnel axis; S12, the support member 2 drives the prefabricated corrugated plate 4 to rise to a set height; S13, the pusher 3 is moved horizontally, and when the pusher 3 moves to contact the inner side of the prefabricated corrugated plate 4, the lower part of the prefabricated corrugated plate 4 can be pushed to move away from the tunnel axis, thereby driving the prefabricated corrugated plate 4 to swing, so that the top end of the prefabricated corrugated plate 4 extends above the contact network equipment in the tunnel. In this process, the support member 2 rises cooperatively until Figure 6 As shown, the prefabricated corrugated plate 4 is made substantially parallel to the top arc semi-arc surface of the tunnel.

[0023] It can be seen from steps S11 to S13 that by setting the support member 2, the through pin and the push member 3 as described above, the large prefabricated corrugated plate 4 can be easily transferred to its installation position, and the contact network equipment position can be easily avoided during the transfer process, and the transfer process of the prefabricated corrugated plate 4 is extremely convenient.

[0024] After the aforementioned step S4, the installed prefabricated corrugated plate 4 can be separated from the support member 2 by pulling out the pin, and then the support member 2 is lowered and the push member 3 is returned to its original position, and the support member 2 and the push member 3 are moved along the tunnel axis to the next construction position to carry out the next construction.

[0025] like Figures 1 to 7 As shown, the present invention also provides an existing tunnel corrugated plate renovation construction equipment to implement the above construction method, which includes a lifting seat 1, a lifting drive mechanism, a push drive mechanism and a construction component.

[0026] like Figure 2 As shown, the construction assembly includes a support mechanism, which includes a support rod 6, a push rod 7, a push slider 8, a push screw 9 and a connecting rod 10. One end of the support rod 6 is rotatably connected to the lifting seat 1, and the other end of the support rod 6 is fixedly provided with the aforementioned support member 2; one end of the push rod 7 is provided with the aforementioned push member 3, and the other end of the push rod 7 is fixedly connected to the push slider 8; the push slider 8 is slidably connected to the lifting seat 1, the push screw 9 is rotatably connected to the lifting seat 1, and the push screw 9 is threadedly connected to the push slider 8; one end of the connecting rod 10 is rotatably connected to the push slider 8, and the other end of the connecting rod 10 is rotatably connected to the support rod 6. The push screw 9 and the push slider 8 constitute a screw nut mechanism, which can drive the push slider 8 to slide forward and backward when the push screw 9 rotates, on the one hand, it can drive the push rod 7 to move forward and backward, and on the other hand, it can drive the support rod 6 to swing in pitch through the connecting rod 10; when the push screw 9 stops rotating, the position self-locking can be achieved. The above-mentioned lifting drive mechanism can drive the lifting seat 1 to move up and down, and the horizontal push drive mechanism can drive the push screw 9 to rotate forward and reverse.

[0027] During implementation, the construction component also includes a prefabricated corrugated plate 4, wherein the supporting mechanism 2 also includes a through pin. The prefabricated corrugated plate 4 is prefabricated according to the semi-arc shape of the top arc of the tunnel in the area to be renovated. The upper inner side of the prefabricated corrugated plate 4 is rotatably connected to the supporting member 2 through the through pin, and the pushing member 3 is adapted to the lower inner side of the prefabricated corrugated plate 4.

[0028] When the construction equipment is in use, after the through pin is inserted according to the aforementioned step S11 to rotatably connect the support member 2 and the connecting member 5 of the prefabricated corrugated plate 4, the lifting seat 1 is driven upward by the lifting drive mechanism to execute the aforementioned step S12; thereafter, the screw rod 9 is driven to rotate by the horizontal push drive mechanism to make the push slider 8 slide forward, on the one hand, the push member 3 at the end of the push rod 7 is pushed forward, and on the other hand, the support rod 6 and the support member 2 at its end are driven to swing upward, thereby executing the aforementioned step S13; after the prefabricated corrugated plate 4 is adjusted in place, the position of the prefabricated corrugated plate 4 is positioned by the self-locking characteristic of the screw nut mechanism, which can facilitate the construction personnel to complete the aforementioned steps S2 to S4; after the construction is completed, the through pin is pulled out, and then the screw rod 9 is driven to rotate by the horizontal push drive mechanism to retract the support member 2 and the push member 3, and the lifting seat 1 is driven to descend and retract by the lifting drive mechanism. At this time, the support member 2 is located at a lower position, which is convenient for the construction personnel to complete the aforementioned step S11 during the next construction.

[0029] When implementing it, Figure 2 As shown, a roller is rotatably provided on the pusher 3, and the roller is rollingly adapted to the inner side of the lower part of the prefabricated corrugated plate 4. Since the prefabricated corrugated plate 4 is in a swinging track when the pusher 3 pushes the lower part of the prefabricated corrugated plate 4, there is sliding between the inner side of the lower part of the prefabricated corrugated plate 4 and the pusher 3. Through the above arrangement, on the one hand, the friction jamming and the scratching of the inner side of the lower part of the prefabricated corrugated plate 4 can be reduced by rolling of the roller. On the other hand, the thickness of the roller is adapted to the corrugation spacing of the prefabricated corrugated plate 4. The roller is arranged between two adjacent corrugations of the prefabricated corrugated plate 4. When the lower part of the prefabricated corrugated plate 4 is pushed, the prefabricated corrugated plate 4 is also limited in the width direction, which is conducive to ensuring the stability of the posture of the prefabricated corrugated plate 4 during the swinging process.

[0030] According to the above, the construction assembly can only include one supporting mechanism to complete the installation process of the prefabricated corrugated plate 4, but considering the stability of the posture of the prefabricated corrugated plate 4 during installation, its width should not be too wide, that is, the construction distance along the axial direction of the tunnel is small each time, which also limits the construction efficiency. Figure 2 As shown, the construction assembly includes two supporting mechanisms, which are arranged in parallel and opposite to each other. The distance between the two supporting mechanisms is adapted to the width of the prefabricated corrugated plate 4. The prefabricated corrugated plate 4 can be made wider, and the installation of the prefabricated corrugated plate 4 over a longer distance along the tunnel axis can be completed in one construction process, thereby improving construction efficiency.

[0031] Furthermore, the construction components also include a platform mechanism, such as Figure 2 , Figure 3 As shown, the platform mechanism includes a construction platform 11, a horizontal beam 12, a vertical beam 13, a horizontal hydraulic cylinder 14, a lifting screw 15 and a lifting motor 16. The construction platform 11 is arranged between two supporting mechanisms; the horizontal beam 12 is arranged horizontally, the vertical beam 13 is arranged vertically, one end of the horizontal beam 12 is fixedly connected to the vertical beam 13, the horizontal beam 12 is slidably connected to the lifting seat 1, the horizontal hydraulic cylinder 14 is fixedly installed on the lifting seat 1, and the piston rod end of the horizontal hydraulic cylinder 14 is fixedly connected to the vertical beam 13; the lifting screw 15 is vertically rotatably arranged in the vertical beam 13, the construction platform 11 is slidably connected to the vertical beam 13, the construction platform 11 is threadedly connected to the lifting screw 15, and the construction platform 11 and the lifting screw 15 constitute a screw nut mechanism. The lifting motor 16 can drive the lifting screw 15 to rotate, and then the construction platform 11 can be driven to slide up and down through the screw nut mechanism. When the piston rod of the transverse hydraulic cylinder 14 is extended and retracted, the vertical beam 13 and the construction platform 11 can be driven to slide forward and backward. During implementation, the width of the construction platform 11 is adapted to the width of the prefabricated corrugated plate 4, so that the construction personnel can conveniently perform construction operations on the various hole positions on the prefabricated corrugated plate 4 on the construction platform 11.

[0032] According to the above, a construction component is provided to quickly complete the installation construction process of the prefabricated corrugated plate 4 on the semi-arc surface of the tunnel top arc side. In the specific implementation, the construction component is provided with two, and the two construction components are symmetrically arranged, so that Figure 5 , Figure 6 As shown, the prefabricated corrugated plates 4 on the inner walls of both sides of the tunnel top arc are installed and constructed simultaneously, further improving the construction efficiency.

[0033] In specific implementation, Figure 1 , Figure 4 As shown, the aforementioned horizontal push driving mechanism includes a horizontal push motor 17 and two transmission shafts 18, and bevel gears A20 and bevel gears B21 are fixedly sleeved at both ends of the transmission shaft 18, respectively. The two transmission shafts 18 are coaxially arranged and are rotatably connected to the lifting seat 1. The horizontal push motor 17 is fixedly installed on the lifting seat 1, and a driving bevel gear 19 is fixedly sleeved on the output shaft of the horizontal push motor 17. The driving bevel gear 19 is meshed with the two bevel gears A20 at the same time. When the horizontal push motor 17 rotates, the driving bevel gear 19 can be driven to rotate, and then the two transmission shafts 18 are synchronously driven to rotate through the two bevel gears A20; bevel gears C22 are fixedly sleeved on the four pushing screw rods 9, one bevel gear B21 is meshed with the two bevel gears C22 at the same time, and another bevel gear B21 is meshed with the other two bevel gears C22 at the same time. When the two transmission shafts 18 rotate synchronously, the four pushing screw rods 9 can be synchronously driven to rotate, so as to realize that each supporting mechanism in the two construction components works simultaneously, as shown in FIG. Figure 5 , Figure 6As shown, through the above specific design, the construction equipment always presents a symmetrical structure as a whole during the construction process, which is conducive to ensuring the stability of its structure.

[0034] When implementing it, Figure 7 As shown, the aforementioned lifting drive mechanism uses an operating tunnel maintenance device (see Chinese utility model patent, application number CN202122674096.8), which includes an excavator platform 23, which can walk on the railway of the tunnel. The excavator platform 23 is connected with a boom 24 and a pitch turntable 25 in sequence, and its specific structure is not described in detail here. The lifting seat 1 is installed on the pitch turntable 25, and the lifting process of the lifting seat 1 can be driven by the coordinated swing of the boom 24 and the pitch turntable 25. At the same time, when the excavator platform 23 walks on the rails, its center line is basically perpendicular to the tunnel axis. When assembling, the symmetry axes of the two construction components are parallel to the center line, so that the installation and construction of the prefabricated corrugated plates 4 of the top arcs of each section of the tunnel can be completed in sequence in the straight section with the movement of the excavator platform 23, and in the curved area, it can be directly adjusted by the rotation of the pitch turntable 25, which is convenient to operate.

[0035] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A construction method for renovating an existing tunnel corrugated plate, characterized in that: First, a large piece of prefabricated corrugated plate is prepared according to the semi-arc shape of the top arc of the area to be treated in the tunnel outside the skylight time; then, the installation construction is carried out within the skylight time, and the installation construction process includes the following steps: S1. Move the prefabricated corrugated plate to a set distance position substantially parallel to the corresponding tunnel top arc semi-arc surface; S2, drilling a plurality of installation holes and grouting holes from the inner side of the prefabricated corrugated plate outward, wherein the installation holes penetrate the prefabricated corrugated plate and extend into the tunnel rock layer, and the grouting holes penetrate the prefabricated corrugated plate; S3, driving mounting bolts into the mounting holes, and fixing the prefabricated corrugated plate to the tunnel rock formation through the mounting bolts; S4, injecting grout on the outer side of the prefabricated corrugated plate through the injection holes.

2. The method for repairing the existing tunnel corrugated plate according to claim 1 is characterized in that: It involves a support member, a pin, and a push member. The support member is set at a set distance on one side of the tunnel axis. The support member can move up and down. The push member can move transversely and perpendicularly to the tunnel axis. A connecting member is provided on the upper inner side of the prefabricated corrugated plate. Step S1 includes the following steps: S11, inserting a through pin to rotatably connect the support member to the connecting member, and the prefabricated corrugated plate droops naturally so that the top end of the prefabricated corrugated plate avoids the position of the contact network equipment in the tunnel in a direction perpendicular to the tunnel axis; S12, raising the support member to a set height; S13, the pushing member is moved laterally to push the lower part of the prefabricated corrugated plate to move away from the tunnel axis, the prefabricated corrugated plate is swung so that the top end of the prefabricated corrugated plate extends above the contact network equipment in the tunnel, and at the same time, the supporting member rises cooperatively until the prefabricated corrugated plate is basically parallel to the semi-arc surface of the tunnel top arc.

3. The method for repairing the existing tunnel corrugated plate according to claim 2 is characterized in that: After step S4, the through pin is pulled out, and then the support member is lowered and the push member is returned to its original position.

4. Existing tunnel corrugated plate renovation construction equipment, characterized in that: It includes a lifting seat, a lifting drive mechanism, a horizontal push drive mechanism and a construction component, wherein the construction component includes a supporting mechanism; The supporting mechanism includes a support rod, a push rod, a push slider, a push screw and a connecting rod. One end of the support rod is rotatably connected to the lifting seat, and the other end of the support rod is fixedly provided with a support member. One end of the push rod is provided with a push member, and the other end of the push rod is fixedly connected to the push slider. The push slider is slidably connected to the lifting seat, the push screw is rotatably connected to the lifting seat, and the push screw is threadedly connected to the push slider. One end of the connecting rod is rotatably connected to the pushing slider, and the other end of the connecting rod is rotatably connected to the support rod; The lifting drive mechanism is used to drive the lifting seat to move up and down, and the horizontal push drive mechanism is used to drive the pushing screw to rotate.

5. The existing tunnel corrugated plate renovation construction equipment according to claim 4 is characterized in that: The construction assembly also includes a prefabricated corrugated plate, and the supporting mechanism also includes a through pin. The prefabricated corrugated plate is prefabricated according to the semi-arc shape of the tunnel top arc. The upper inner side of the prefabricated corrugated plate is rotatably connected to the supporting member through the through pin, and the pushing member is adapted to the lower inner side of the prefabricated corrugated plate.

6. The existing tunnel corrugated plate renovation construction equipment according to claim 5 is characterized in that: The pushing member is rotatably provided with a roller, and the roller is rollingly adapted to the inner side of the lower part of the prefabricated corrugated plate.

7. The existing tunnel corrugated plate renovation construction equipment according to claim 5 is characterized in that: The construction assembly comprises two supporting mechanisms, which are arranged in parallel and opposite to each other, and the distance between the two supporting mechanisms is adapted to the width of the prefabricated corrugated board.

8. The existing tunnel corrugated plate renovation construction equipment according to claim 7 is characterized in that: The construction assembly also includes a platform mechanism, which includes a construction platform, a horizontal beam, a vertical beam, a horizontal hydraulic cylinder, a lifting screw and a lifting motor. The construction platform is arranged between the two supporting mechanisms. The cross beam is arranged horizontally, the vertical beam is arranged vertically, and one end of the cross beam is fixedly connected to the vertical beam. The cross beam is slidably connected to the lifting seat, the transverse hydraulic cylinder is fixedly installed on the lifting seat, and the piston rod end of the transverse hydraulic cylinder is fixedly connected to the vertical beam. The lifting screw is vertically and rotatably arranged in the vertical beam, and the lifting motor is used to drive the lifting screw to rotate. The construction platform is slidably connected to the vertical beam, and the construction platform is threadedly connected to the lifting screw.

9. The existing tunnel corrugated plate renovation construction equipment according to claim 7 or 8, characterized in that: There are two construction components, and the two construction components are symmetrically arranged on the lifting seat; The push drive mechanism comprises a push motor and two transmission shafts, both ends of the transmission shafts are respectively fixedly sleeved with bevel gears A and bevel gears B, the two transmission shafts are coaxially arranged and both are rotatably connected to the lifting seat, the push motor is fixedly mounted on the lifting seat, a driving bevel gear is fixedly sleeved on the output shaft of the push motor, and the driving bevel gear is meshed with the two bevel gears A at the same time; Bevel gears C are fixedly sleeved on the four pushing screw rods, one bevel gear B is meshed with two bevel gears C at the same time, and another bevel gear B is meshed with another two bevel gears C at the same time.

10. The existing tunnel corrugated plate renovation construction equipment according to claim 9, characterized in that: The lifting drive mechanism is selected from operating tunnel maintenance equipment, which includes an excavator platform. The excavator platform can walk on the railway in the tunnel. The excavator platform is connected with a boom and a pitch turntable in sequence, and the lifting seat is installed on the pitch turntable.

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