Road tunnel face collapse repairing device and using method thereof

Abstract

The invention belongs to the technical field of tunnel construction equipment, and particularly relates to a highway tunnel face collapse repairing device and a using method thereof.By arranging a step-by-step propelling assembly, when a tunnel collapse position is treated, through a supporting framework erected step by step, in cooperation with an extending pillow, a pushing table and covering mesh cloth, the tunnel collapse position is repaired, and the tunnel collapse position is repaired. The tunnel face is shielded and supported, on one hand, a safe operation space can be provided for workers, the workers are always covered in the process that the workers clean collapsed crushed materials of the tunnel, and then potential safety hazards in the working process of the workers are reduced; the probability of secondary collapse of the tunnel is reduced, convenience is provided for repair of the collapse position of the tunnel, and meanwhile, after the collapse position of the tunnel is shielded by the supporting framework and the covering mesh cloth, the convenience of repair of the collapse position of the tunnel is enhanced in cooperation with technologies such as grouting curing operation.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction equipment, in particular to a highway tunnel face collapse repairing device and a use method thereof. Background Art

[0002] Highway tunnels refer to passages built underground for vehicles to travel, and are generally also used as pipelines and pedestrian passages. Highway tunnel engineering has a long history in my country. In ancient times, most of my country's highway tunnels were simple caves or man-made passages, mainly used to connect mountain roads to facilitate the passage of pedestrians and horses. With the advancement of science and technology and the increase in transportation needs, the construction technology of modern highway tunnels has developed rapidly.

[0003] In modern highway tunnel projects, at the beginning of highway tunnel construction, it is necessary to comprehensively consider the overall layout of the tunnel based on the investigation of the topography, geology, meteorology, hydrology, social and natural environment of the area where the tunnel is located and relevant laws and regulations. However, even so, during the construction of highway tunnels, due to the diversity of the mountain environment in the planned tunnel route, there are fault fracture zones, mud bursts, water gushing, weak surrounding rocks and other unfavorable geology on the planned tunnel route, which makes the excavated tunnel have the probability of collapse. After the tunnel collapses, the tunnel needs to be repaired and reinforced to ensure its structural safety and long-term stability. In related technologies, the repair of tunnel collapse usually includes the steps of cleaning up collapsed waste, backfilling with reinforcement materials, and capping. When cleaning up collapsed waste in the tunnel, due to the low structural strength of the collapsed part of the tunnel, in the absence of necessary support, it is easy to cause secondary collapse, which brings inconvenience to the construction process.

[0004] The related technology discloses a method and structure for treating non-roof collapse in the arch of a mountain tunnel, with application number CN202111206177.3. This scheme uses a long-arm machine to repair the collapsed part of the tunnel, thereby improving the operating safety of the workers. However, when using this scheme for collapse repair, it was found that, on the one hand, due to the lack of supporting equipment at the collapsed part, the equipment vibration caused the probability of secondary collapse to increase during the construction process, thereby affecting the progress of the tunnel repair.

[0005] In view of this, the present invention proposes a highway tunnel face collapse repair device and a use method thereof, which are used to solve the above-mentioned technical problems. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a highway tunnel face collapse repair device and a method of using the same.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a highway tunnel face collapse repair device described in the present invention comprises a support structure, and the support structure is used to support the tunnel face;

[0008] The support structure includes a top column and an arc plate, wherein the arc plate is fitted on the tunnel face, and the top column is located below the arc plate, and the top column is used to support the arc plate;

[0009] It also includes a step-by-step propulsion structure, wherein the step-by-step propulsion structure cooperates with the support structure to form a safe working space;

[0010] The step-by-step propulsion structure includes an extension pillow, a propulsion platform and a movable gantry;

[0011] The arc plate is provided with evenly distributed combined grooves on one side facing the tunnel face, and extension pillows are installed in the combined grooves, and the extension pillows extend along the length direction of the tunnel;

[0012] The propulsion platform is fixedly installed on the top of the movable gantry, and the movable gantry provides support force for the propulsion platform. An extension groove is opened on the propulsion platform, and the extension pillow is extended and fixed into the extension groove.

[0013] Preferably, a placing table is installed on the movable gantry, a covering mesh is placed on the placing table, a placing groove is opened on the pushing table, and the covering mesh extends to above the extension pillow through the placing groove.

[0014] Preferably, the extension pillows are composed of a movable end and a supporting end, the movable end is detachably fixedly installed in the extension groove, the supporting end is fixedly installed between the supporting structure and the tunnel face, and the supporting end is formed by a plurality of sections of assembled rails fixedly connected.

[0015] Preferably, the lengths of the plurality of movable ends are different, and the range of the lengths of the plurality of movable ends is greater than the length of a single section of assembled rail.

[0016] Preferably, a ball is rotatably mounted in the combination groove, the extension pillow is slidably connected to the combination groove via the ball, a roller is rotatably mounted on one end of the movable end away from the supporting end, and the movable end contacts the covering mesh through the roller.

[0017] Preferably, it also includes a trimming and reinforcement component, which is installed on the mobile gantry, and the trimming and reinforcement component trims and reinforces the tunnel during the advancement of the mobile gantry;

[0018] The finishing and reinforcement assembly includes a tunneling plate, a rolling wheel and a stuffing box;

[0019] The excavation plate is fixedly mounted on the movable gantry, the excavation plate is fitted with the tunnel face, and the excavation plate is used to repair the tunnel face;

[0020] The rolling wheel is rotatably mounted at the bottom of the mobile gantry, the rolling wheel is designed in plural, the rolling wheel is used to roll the tunnel ground, and the support structure is installed on the moving path of the rolling wheel;

[0021] The stuffing box is installed on the moving portal frame. The stuffing box is designed to be opened in the gap between the rolling wheels. Powdered reinforcement materials are stored in the stuffing box for reinforcing the tunnel ground.

[0022] Preferably, the movable gantry includes a propulsion end and a rolling end, the propulsion end is sleeved on the rolling end, the tunneling plate is installed on the rolling end, a hydraulic push rod is fixedly installed between the propulsion end and the rolling end, and a driving device is installed on the rolling end, and the driving device is used to drive the rolling wheel to rotate.

[0023] Preferably, a turning groove and an impact groove are provided on the rolling end, the impact groove is conductively connected to the turning groove, a turning motor is installed on the rolling end, a turning bucket is fixedly installed on the output end of the turning motor, the turning bucket corresponds to the turning groove, and the turning bucket opening faces the impact groove, a high-pressure nozzle is installed in the impact groove, the high-pressure nozzle is externally connected to a pumping assembly, and the impact groove is inclined away from the turning groove to guide the gravel to move above the covering mesh.

[0024] Preferably, a coarse filter plate is hingedly installed at the opening of the tipping bucket, a material receiving box is fixedly installed at the bottom of the tipping bucket, the material receiving box extends into the interior of the tipping bucket, and a fine filter screen is fixedly installed at the connection between the material receiving box and the inner cavity of the tipping bucket, and the material receiving box is conductively connected to the stuffing box through a pipe.

[0025] A method for using a highway tunnel face collapse repair device, the method comprising the following steps:

[0026] S1: Move the device into the tunnel and adjust the height of the mobile gantry outside the collapsed part of the tunnel so that the top of the propulsion platform fits the tunnel face;

[0027] S2: Start the driving device to move the mobile gantry to excavate, trim and compact the tunnel. When the movement distance reaches the preset value, the staff will build a support structure on the moving path of the mobile gantry and load the extension pillow;

[0028] S3: Repeat the movement of the mobile gantry and the erection of the supporting structure until the impact groove is aligned with the collapsed part of the tunnel. At this time, the overturning bucket is driven by the overturning motor, and the staff puts the collapsed material into the overturning bucket under the step-by-step advancement structure;

[0029] S4: After being filtered by the coarse filter plate and the fine filter screen, the crushed stone is in the tipping bucket and the small soil particles fall into the stuffing box. The tipping bucket is controlled to tip into the tipping trough and the crushed stone is impacted to the collapsed part of the tunnel with the assistance of the high-pressure nozzle.

[0030] S5: Move step by step until the supporting structure, extension pillow and covering mesh work together to completely seal the collapsed part of the tunnel. At this time, holes are opened in the covering mesh and concrete is injected into the collapsed part. When the concrete is completely solidified, the repair of the tunnel face is completed.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. The highway tunnel face collapse repair device and the use method thereof described in the present invention, by setting a step-by-step advancing component, when dealing with the tunnel collapse, the tunnel face is shielded and supported by a step-by-step erected support structure in cooperation with an extension pillow, a push platform and a covering mesh. On the one hand, it can provide a safe working space for the staff, and the staff are always covered in the process of cleaning up the tunnel collapse debris, thereby reducing the potential safety hazards in the work process of the staff. On the other hand, it can also utilize the supporting effect to reduce the probability of secondary collapse of the tunnel, and provide convenience for the repair of the tunnel collapse. At the same time, after the tunnel collapse is shielded by the support structure and the covering mesh, it is cooperated with grouting and curing operations to enhance the convenience of repairing the tunnel collapse.

[0033] 2. The highway tunnel face collapse repair device and the use method thereof described in the present invention, by setting a trimming and reinforcement component, during the step-by-step advancement of the mobile gantry, on the one hand, the tunnel face is trimmed to make the lowest end of the tunnel face more regular to facilitate the parallel laying of the extended sleepers; on the other hand, the local road surface of the tunnel is rolled and reinforced, thereby providing an installation platform for the supporting structure, thereby enhancing the supporting effect of the supporting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Figure 1 It is an overall stereogram of the present invention;

[0036] Figure 2 is a three-dimensional diagram of the support structure of the present invention;

[0037] Figure 3 It is the overall schematic diagram of the extension pillow;

[0038] Figure 4 It is a three-dimensional diagram of the step-by-step advancement architecture;

[0039] Figure 5 This is a disassembled diagram of the mobile gantry;

[0040] Figure 6 It is a cross-sectional view of the step-by-step advancement architecture;

[0041] Figure 7 yes Figure 6 A partial enlarged view of the middle A;

[0042] Figure 8 yes Figure 6 A partial enlarged view of point B in the middle;

[0043] Fig. 9 is a flow chart of the method of the present invention;

[0044] In the figure: 1. top column; 11. arc plate; 12. combined trough; 2. pushing platform; 21. extension trough; 22. placing platform; 23. covering mesh; 24. placing trough; 25. ball bearing; 26. roller; 3. moving end; 31. supporting end; 4. heading plate; 41. rolling wheel; 42. stuffing box; 5. pushing end; 51. rolling end; 52. hydraulic push rod; 53. driving device; 6. turning trough; 61. impact trough; 62. turning motor; 63. turning bucket; 64. high-pressure nozzle; 65. coarse filter plate; 66. receiving box; 67. fine filter. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0046] like Figures 1 to 8 As shown, a highway tunnel face collapse repairing device according to the present invention comprises a support structure, and the support structure is used to support the tunnel face;

[0047] The support structure includes a top column 1 and an arc plate 11. The arc plate 11 is installed on the tunnel face. The top column 1 is located below the arc plate 11. The top column 1 is used to support the arc plate 11.

[0048] It also includes a step-by-step propulsion structure, wherein the step-by-step propulsion structure cooperates with the support structure to form a safe working space;

[0049] The step-by-step propulsion structure includes an extension pillow, a propulsion platform 2 and a movable gantry;

[0050] The arc plate 11 is provided with evenly distributed combination grooves 12 on one side facing the tunnel face, and extension pillows are installed in each of the combination grooves 12, and the extension pillows extend along the length direction of the tunnel;

[0051] The pushing platform 2 is fixedly installed on the top of the moving door frame, and the moving door frame provides support force for the pushing platform 2. An extension groove 21 is opened on the pushing platform 2, and the extension pillow is extended and fixed into the extension groove 21.

[0052] A placing platform 22 is installed on the movable door frame, a covering mesh cloth 23 is placed on the placing platform 22, a placing groove 24 is opened on the pushing platform 2, and the covering mesh cloth 23 extends to above the extension pillow through the placing groove 24.

[0053] When repairing a collapsed tunnel, it is usually necessary to first clean up the debris that has fallen from the collapsed area, and the cleaning is mostly done with the help of machinery. Therefore, during the cleaning process, it is easy for the unstable structure at the collapsed tunnel to collapse again due to vibration and other reasons. The occurrence of secondary collapse will not only increase the amount of tunnel repair work, but also easily pose a threat to the workers. For this reason, in this application, a step-by-step advancement structure is set up. In the process of cleaning up the collapsed debris, the tunnel is supported and reinforced step by step. On the one hand, the probability of secondary collapse of the tunnel is reduced. On the other hand, even if the tunnel collapses again, the existence of the step-by-step advancement structure and the support structure can provide a safe avoidance area for the workers, thereby reducing the safety hazards of the workers at work.

[0054] Specifically, when a tunnel collapses, the staff first needs to use tools to roughly determine the location of the collapse, and then drive the collapse repair device to move to the tunnel near the collapsed location, and then adjust the height of the movable gantry. In the present invention, the movable gantry is a frame-type structure, which is mainly used to support the push platform 2, and the height of the movable gantry can be adjusted through the existing technology, thereby pushing the push platform 2 to move closer to the top of the tunnel until the push platform 2 is in contact with the tunnel top face. In the process of adjusting the height of the movable gantry to make the push platform 2 fit with the tunnel top, the staff uses tools to insert one end of the extension pillow into the extension groove 21, and finally makes the extension pillow and the push platform 2 both fit with the tunnel face. The surface fits, and in this process, the staff manually pulls the covering mesh 23 in the placement groove 24, unfolds the covering mesh 23, extends it backward, and finally blocks the extension pillow and the pushing platform 2, and finally makes the covering mesh 23 be clamped in the gap between the tunnel face and the extension pillow. At this time, the staff assumes the supporting structure one by one on the extension path of the extension pillow. During the erection of the supporting structure, the combined groove 12 opened on the arc plate 11 is aligned with the extension pillow, and the arc plate 11 is supported by the top column 1. It should be known that in the present invention, the top column 1 is used to support the arc plate 11, and the combined height of the arc plate 11 and the top column 1 is the same as the tunnel height corresponding to the installation position, which can be a special height. The columnar structure can also be a structure with adjustable height. Since the tunnel at the uncollapsed part is a relatively regular structure, multiple support structures cooperate with the extension pillow to form a cross-type support structure to support the tunnel face. At the same time, after the support structure is erected, the covering mesh 23 in the gap between the tunnel face and the extension pillow will be pressurized and fixed. When the support structure in this area is erected, the staff will continue to drive the mobile gantry, causing the driving gantry, the advancement platform 2 and the extension pillow to move along the length direction of the tunnel, and finally completely block and cover the collapsed part of the tunnel. It should be noted that during the movement, attention should be paid to the rear end position of the extension pillow. During the step-by-step advancement of the advancement platform 2, the staff should continue to move the gantry, the advancement platform 2 and the extension pillow. The supporting structure is continuously erected, so that the tail end of the extension pillow is always supported by the supporting structure, and the staff cleans the collapsed debris on the ground in the safe working space formed by the mobile gantry and the pushing platform 2. At the same time, in the process of the mobile gantry and the pushing platform 2 being pushed step by step, the covering mesh cloth 23 on the placement platform 22 is gradually unfolded and clamped between the supporting structure and the tunnel face. It should be noted that in the present invention, the covering mesh cloth 23 is composed of a steel mesh and a non-woven fabric bonded together, and the relatively smooth side of the covering mesh cloth 23 faces the supporting structure and the extension pillow. When the pushing platform 2 and the extension pillow move, the covering mesh cloth 23 can be used to improve the smooth state of the tunnel face, thereby facilitating the sliding of the pushing platform 2 and the extension pillow.

[0055] The present invention sets a step-by-step advancing component. When dealing with the collapsed part of the tunnel, the support structure erected step by step, in cooperation with the extension pillow, the pushing platform and the covering mesh 23, shields and supports the tunnel face. On the one hand, it can provide a safe working space for the staff. When the staff cleans the collapsed debris of the tunnel, the staff is always covered, thereby reducing the potential safety hazards in the work process of the staff. On the other hand, it can also utilize the supporting effect to reduce the probability of secondary collapse of the tunnel, and provide convenience for the repair of the collapsed part of the tunnel. At the same time, after the collapsed part of the tunnel is shielded by the support structure and the covering mesh 23, it cooperates with the grouting and curing operations and other processes to enhance the convenience of repairing the collapsed part of the tunnel.

[0056] As a preferred embodiment of the present invention, the extension pillow is composed of a movable end 3 and a supporting end 31. The movable end 3 is detachably fixed in the extension groove 21, and the supporting end 31 is fixed between the supporting structure and the tunnel face. The supporting end 31 is fixedly connected by multiple sections of assembled rails.

[0057] The lengths of the plurality of movable ends 3 are different, and the range of the lengths of the plurality of movable ends 3 is greater than the length of a single section of assembled rail.

[0058] A ball 25 is rotatably installed in the combined groove 12 , and the extension pillow is slidably connected to the combined groove 12 through the ball 25 . A roller 26 is rotatably installed at the end of the movable end 3 away from the supporting end 31 , and the movable end 3 contacts the covering mesh 23 through the roller 26 .

[0059] In order to further enhance the supporting effect on the tunnel face, the extension pillow in the present invention is composed of a mobile end 3 and a supporting end 31. During the forward movement of the propulsion platform 2, the mobile end 3 moves synchronously with the propulsion platform 2 to cooperate with the mobile gantry and the erected supporting structure to support the propulsion platform 2. As the mobile end 3 continues to move, when the distance between the mobile end 3 and the installed supporting end 31 is greater than the length of a single section of assembled rails, the staff installs the assembled rails step by step to fix the assembled rails to the installed assembled rails, thereby extending the length of the supporting end 31. The supporting end 31 cooperates with the supporting structure to enhance the supporting effect on the tunnel face. At the same time, due to the continuous extension of the supporting end 31, when the supporting end 31 and the mobile end 3 extend to the collapsed part of the tunnel, the existence of the mobile end 3 can provide support for the supporting structure. The erection provides a height limit, thereby facilitating the erection of the support structure. When the mobile end 3 is separated from the support structure, the support end 31 can limit the installed support structure to prevent the installed support structure from tipping over. The lengths of the mobile ends 3 are different, and the length difference is greater than the length of a single section of assembled rails. Therefore, during the erection of the support end 31, on the one hand, the connection between the assembled rails that constitute multiple support ends 31 is misaligned. On the other hand, when installing the assembled rails and extending the support ends 31, the installed support structure can at least be combined with part of the support end 31 or the mobile end 3, thereby preventing the support structure from tipping over. The arrangement of the ball 25 and the roller 26, the former is used to reduce the friction between the extension pillow and the arc plate 11, and the latter is used to reduce the friction between the mobile end 3 and the covering mesh 23, are both used to enhance the convenience of the extension pillow movement.

[0060] As a preferred embodiment of the present invention, it further comprises a trimming and reinforcement component, wherein the trimming and reinforcement component is installed on the moving gantry, and the trimming and reinforcement component trims and reinforces the tunnel during the advancement of the moving gantry;

[0061] The finishing and reinforcement assembly includes a tunneling plate 4, a rolling wheel 41 and a stuffing box 42;

[0062] The excavation plate 4 is fixedly mounted on the movable gantry, the excavation plate 4 is fitted with the tunnel face, and the excavation plate 4 is used to repair the tunnel face;

[0063] The rolling wheel 41 is rotatably mounted at the bottom of the mobile gantry. The rolling wheel 41 is designed in plural. The rolling wheel 41 is used to roll the tunnel ground. The support structure is installed on the moving path of the rolling wheel 41.

[0064] The stuffing box 42 is installed on the movable portal frame. The stuffing box 42 is designed to be opened in the gap between the rolling wheels 41. The stuffing box 42 contains powdered reinforcement materials for reinforcing the tunnel ground.

[0065] The mobile gantry includes a propulsion end 5 and a rolling end 51, the propulsion end 5 is sleeved on the rolling end 51, the excavation plate 4 is installed on the rolling end 51, a hydraulic push rod 52 is fixedly installed between the propulsion end 5 and the rolling end 51, and a driving device 53 is installed on the rolling end 51, and the driving device 53 is used to drive the rolling wheel 41 to rotate.

[0066] In the process of step-by-step advancement, in order to enhance the supporting effect of the supporting structure and to facilitate the installation of the supporting structure, a trimming and reinforcement component is also provided in the present invention. In the process of step-by-step advancement of the mobile gantry, on the one hand, the tunnel face is trimmed to make the lowest end of the tunnel face more regular, so as to facilitate the parallel laying of the extended sleepers; on the other hand, the local road surface of the tunnel is rolled and reinforced, thereby providing an installation platform for the supporting structure and enhancing the supporting effect of the supporting structure.

[0067] Specifically, during the movement of the mobile gantry, under the control of a preset program, the hydraulic push rod 52 first extends to push the propulsion end 5 forward. During the advancement of the propulsion end 5, the tunnel face is trimmed using the heading plate 4 to cut off the protruding part of the tunnel face. When the length of the hydraulic push rod 52 reaches its maximum, the hydraulic push rod 52 releases pressure, and at the same time, the driving assembly drives the rolling wheel 41 to rotate. Under the friction between the rolling wheel 41 and the ground, the rolling end 51 and the rolling wheel 41 move forward. During this process, the filler in the filler box 42 gradually falls onto the ground through the bottom opening, and after being rolled by the rolling wheel 41, the ground is reinforced. During this process, the staff can install the supporting structure one by one on the rolling path of the rolling wheel 41 according to the pre-planned drawings.

[0068] As a preferred embodiment of the present invention, a turning groove 6 and an impact groove 61 are provided on the rolling end 51, and the impact groove 61 is conductively connected to the turning groove 6. A turning motor 62 is installed on the rolling end 51, and a turning bucket 63 is fixedly installed on the output end of the turning motor 62. The turning bucket 63 corresponds to the turning groove 6, and the turning bucket 63 opens toward the impact groove 61. A high-pressure nozzle 64 is installed in the impact groove 61, and the high-pressure nozzle 64 is externally connected to a pumping component. The impact groove 61 is inclined away from the turning groove 6 to guide the gravel to move above the covering mesh 23.

[0069] A coarse filter plate 65 is hingedly installed at the opening of the tipping bucket 63, a material receiving box 66 is fixedly installed at the bottom of the tipping bucket 63, the material receiving box 66 extends into the inside of the tipping bucket 63, and a fine filter screen 67 is fixedly installed at the connection between the material receiving box 66 and the inner cavity of the tipping bucket 63, and the material receiving box 66 is connected to the stuffing box 42 through a pipeline.

[0070] During the laying process of the supporting structure and the covering mesh 23, as the mobile gantry gradually moves forward, the staff will clean up the collapsed debris on the ground, some of which can be used as fillers to refill the collapsed part of the tunnel. Therefore, the staff controls the turning motor 62 to rotate through the program, so that the turning bucket 63 extends to the ground. Then the staff pours the debris into the turning bucket 63 and filters the debris through the coarse filter plate 65 and the fine filter screen 67. The debris with particles smaller than the fine filter screen 67 enters the receiving box 66 and is subsequently turned over by the turning bucket 63. When flipping, the crushed materials enter the stuffing box 42 through the pipeline, and the crushed materials with a particle size between the fine filter 67 and the coarse filter mesh size flow into the impact groove 61 after the flip bucket 63 flips into the flip groove 6. The high-pressure nozzle 64 is externally connected to a pumping component for pumping concrete and other slurries. Under the impact of the concrete slurry sprayed by the high-pressure nozzle 64, the crushed materials fall to the top of the supporting structure and the covering mesh 23. After the crushed materials are mixed and solidified with the concrete slurry, the collapsed part of the tunnel is sealed. In combination with operations such as artificial grouting, the convenience of repairing the collapsed part of the tunnel is effectively enhanced.

[0071] like Fig. 9 As shown, a method for using a highway tunnel face collapse repair device comprises the following steps:

[0072] S1: Move the device into the tunnel and adjust the height of the movable gantry outside the collapsed part of the tunnel so that the top of the propulsion platform 2 fits with the tunnel face;

[0073] S2: Start the driving device 53 to move the mobile gantry to excavate, trim and compact the tunnel. When the moving distance reaches a preset value, the staff will build a support structure on the moving path of the mobile gantry and load the extension pillow.

[0074] S3: Repeat the movement of the mobile gantry and the erection of the supporting structure until the impact groove 61 is aligned with the collapsed part of the tunnel. At this time, the overturning bucket 63 is driven by the overturning motor 62, and the staff puts the collapsed material into the overturning bucket 63 under the step-by-step advancement structure;

[0075] S4: After being filtered by the coarse filter plate 65 and the fine filter screen 67, the crushed stones are in the overturning bucket 63, and the small soil particles fall into the stuffing box 42. The overturning bucket 63 is controlled to overturn into the overturning trough 6, and with the assistance of the high-pressure nozzle 64, the crushed stones are impacted to the collapsed part of the tunnel;

[0076] S5: Move step by step until the supporting structure, the extension pillow and the covering mesh 23 work together to completely block the collapsed part of the tunnel. At this time, holes are opened in the covering mesh 23 and concrete is injected into the collapsed part. When the concrete is completely solidified, the repair of the tunnel face is completed.

[0077] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A highway tunnel face collapse repair device, comprising a support structure, wherein the support structure is used to support the tunnel face; The support structure comprises a top column (1) and an arc plate (11); the arc plate (11) is fitted on the tunnel face, the top column (1) is located below the arc plate (11), and the top column (1) is used to support the arc plate (11); Features: It also includes a step-by-step propulsion structure, wherein the step-by-step propulsion structure cooperates with the support structure to form a safe working space; The step-by-step propulsion structure comprises an extension pillow, a propulsion platform (2) and a movable gantry; The arc plate (11) is provided with evenly distributed combination grooves (12) on one side facing the tunnel face, and extension pillows are installed in each of the combination grooves (12), and the extension pillows extend along the length direction of the tunnel; The propulsion platform (2) is fixedly mounted on the top of the movable gantry, the movable gantry provides support force for the propulsion platform (2), an extension groove (21) is provided on the propulsion platform (2), and the extension pillow extends and is fixed into the extension groove (21).

2. A highway tunnel face collapse repair device according to claim 1, characterized in that: A placement platform (22) is installed on the movable door frame, a covering mesh cloth (23) is placed on the placement platform (22), a placement groove (24) is opened on the pushing platform (2), and the covering mesh cloth (23) extends to the top of the extension pillow through the placement groove (24).

3. A highway tunnel face collapse repair device according to claim 2, characterized in that: The extension pillows are composed of a movable end (3) and a supporting end (31); the movable end (3) is detachably fixedly installed in the extension groove (21); the supporting end (31) is fixedly installed between the support structure and the tunnel face; the supporting end (31) is formed by fixedly connecting multiple sections of assembled steel rails.

4. A highway tunnel face collapse repair device according to claim 3, characterized in that: The lengths of the plurality of movable ends (3) are different, and the range of the lengths of the plurality of movable ends (3) is greater than the length of a single section of assembled rail.

5. A highway tunnel face collapse repair device according to claim 4, characterized in that: A ball (25) is rotatably mounted in the combined groove (12), the extension pillow is slidably connected to the combined groove (12) via the ball (25), a roller (26) is rotatably mounted on one end of the movable end (3) away from the supporting end (31), and the movable end (3) contacts the covering mesh (23) via the roller (26).

6. A highway tunnel face collapse repair device according to claim 5, characterized in that: It also includes a trimming and reinforcement component, which is installed on the mobile gantry and trims and reinforces the tunnel during the advancement of the mobile gantry; The finishing and reinforcement assembly comprises a tunneling plate (4), a rolling wheel (41) and a stuffing box (42); The excavation plate (4) is fixedly mounted on the movable gantry, the excavation plate (4) is in contact with the tunnel face, and the excavation plate (4) is used to repair the tunnel face; The rolling wheel (41) is rotatably mounted at the bottom of the movable gantry, the rolling wheel (41) is designed in plural, the rolling wheel (41) is used to roll the tunnel ground, and the support structure is installed at a position on the moving path of the rolling wheel (41); The stuffing box (42) is installed on the movable portal frame. The stuffing box (42) is designed to be opened in the gap between the rolling wheels (41). Powdered reinforcement material is stored in the stuffing box (42) for reinforcing the tunnel ground.

7. A highway tunnel face collapse repair device according to claim 6, characterized in that: The movable gantry comprises a propulsion end (5) and a rolling end (51), wherein the propulsion end (5) is sleeved on the rolling end (51), and the excavation plate (4) is mounted on the rolling end (51). A hydraulic push rod (52) is fixedly mounted between the propulsion end (5) and the rolling end (51), and a driving device (53) is mounted on the rolling end (51), and the driving device (53) is used to drive the rolling wheel (41) to rotate.

8. A highway tunnel face collapse repair device according to claim 7, characterized in that: The rolling end (51) is provided with a turnover groove (6) and an impact groove (61), the impact groove (61) is conductively connected to the turnover groove (6), the rolling end (51) is provided with a turnover motor (62), the output end of the turnover motor (62) is fixedly provided with a turnover bucket (63), the turnover bucket (63) corresponds to the turnover groove (6), and the opening of the turnover bucket (63) faces the impact groove (61), a high-pressure nozzle (64) is provided in the impact groove (61), the high-pressure nozzle (64) is externally connected to a pumping assembly, and the impact groove (61) is arranged to be inclined away from the turnover groove (6) to guide the crushed stones to move above the covering mesh (23).

9. A highway tunnel face collapse repair device according to claim 8, characterized in that: A coarse filter plate (65) is hingedly mounted at the opening of the tipping bucket (63), a material receiving box (66) is fixedly mounted at the bottom of the tipping bucket (63), the material receiving box (66) extends into the interior of the tipping bucket (63), and a fine filter screen (67) is fixedly mounted at the connection between the material receiving box (66) and the inner cavity of the tipping bucket (63), and the material receiving box (66) is conductively connected to the stuffing box (42) through a pipeline.

10. A method for using a highway tunnel face collapse repair device, characterized in that: The method is used in a highway tunnel face collapse repair device as described in claim 9, and the method comprises the following steps: S1: Move the device into the tunnel and adjust the height of the movable gantry outside the collapsed part of the tunnel so that the top of the propulsion platform (2) is in contact with the tunnel face; S2: starting the driving device (53) to move the mobile gantry to excavate, trim and compact the tunnel. When the moving distance reaches a preset value, the staff will build a support structure on the moving path of the mobile gantry and load the extension pillow. S3: Repeat the movement of the mobile gantry and the erection of the supporting structure until the impact groove (61) is aligned with the collapsed part of the tunnel. At this time, the overturning bucket (63) is driven by the overturning motor (62), and the staff puts the collapsed material into the overturning bucket (63) under the step-by-step advancement structure; S4: After being filtered by the coarse filter plate (65) and the fine filter screen (67), the crushed stones are in the turning bucket (63) and the small soil particles fall into the stuffing box (42). The turning bucket (63) is controlled to turn over into the turning trough (6). With the assistance of the high-pressure nozzle (64), the crushed stones are impacted to the collapsed part of the tunnel. S5: Move step by step until the supporting structure, the extension pillow and the covering mesh (23) work together to completely block the collapsed part of the tunnel. At this time, holes are opened in the covering mesh (23) and concrete is injected into the collapsed part. When the concrete is completely solidified, the repair of the tunnel face is completed.

Images