Disassembling and assembling equipment for replacing invasion-limiting pipe piece in tunnel

Abstract

The utility model discloses a dismounting and mounting equipment for tunnel intruding limit duct piece replacement, including sealing structure, circulation structure, support structure, duct piece breaking structure, duct piece replacement structure and man gate, the sealing structure is arranged in shield tunnel, circulation structure and man gate are arranged on the sealing structure, support structure includes support frame and actuating rod, and the actuating rod is fixed on the support frame. The supporting frame is arranged on the sealing structure, the action rod is movably arranged on the supporting frame, the action rod is arranged on the axis of the sealing structure in a penetrating mode, and the duct piece breaking structure and the duct piece replacing structure are arranged on the action rod and located in the sealing structure. A sealed space is formed in the tunnel structure through the sealing structure, a tunnel inner support is formed through grouting, the tunnel structure is supported through slurry balance, the stratum can be stabilized without arranging an external support, the problems existing in existing stratum reinforcement are solved, replacement operation of invasion limit duct pieces is effectively simplified, and the construction efficiency is improved. The construction period is greatly shortened, and meanwhile the construction cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling technology, specifically to a disassembly and assembly device for replacing encroaching tunnel segments inside a tunnel. Background Technology

[0002] The shield tunneling method refers to the method of constructing underground spaces by using the cutterhead and cutting tools at the front end of the shield machine to excavate rock and soil, assembling precast tunnel segments under the protection of the shield shell, and providing reaction force for the propulsion hydraulic cylinders, thus advancing in a serpentine manner through the strata. With the vigorous development of rail transit engineering in my country, the shield tunneling method has become a consensus in urban rail transit construction methods due to its advantages such as safety and efficiency.

[0003] With the improvement of urban underground space excavation efficiency, shield tunnel construction faces more complex comprehensive conditions such as large burial depth, small radius, large longitudinal slope, and complex geology due to the influence of surface and underground structures. During construction, problems such as serious misalignment and protrusion of tunnel segments, water and mud inrush, and large overall deformation are inevitable, which may seriously affect the safety of the tunnel.

[0004] Currently, the main method for partially replacing encroaching tunnel segments in shield tunnels is to combine external ground reinforcement with internal support to ensure tunnel structure and construction safety before proceeding with the segment replacement. However, this method suffers from drawbacks such as long ground reinforcement time, complex support conversion procedures, and high safety risks, significantly increasing construction time and costs. This invention provides a disassembly and assembly device for replacing encroaching tunnel segments to solve these problems. Utility Model Content

[0005] This utility model provides a disassembly and assembly device for replacing encroaching tunnel segments. It uses internal grouting support to ensure the stability and safety of the tunnel structure and allows for convenient and quick replacement of encroaching tunnel segments.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is:

[0007] A dismantling and assembly device for replacing encroaching tunnel segments inside a shield tunnel is disclosed. This device replaces encroaching tunnel segments within the shield tunnel. It includes a sealing structure, a circulation structure, a support structure, a segment breaking structure, a segment replacement structure, and a manhole. The sealing structure is installed in the shield tunnel to seal the segment replacement section and support the tunnel. The circulation structure and the manhole are mounted on the sealing structure. The support structure includes a support frame and an actuating rod. The support frame is mounted on the sealing structure, and the actuating rod is movably mounted on the support frame. The actuating rod passes through the axis of the sealing structure and moves back and forth along the axis. The segment breaking structure and the segment replacement structure are mounted on the actuating rod and located within the sealing structure.

[0008] Furthermore, the sealing structure includes a front sealing assembly and a rear sealing assembly, which are disposed opposite to each other in the tunnel and seal the tunnel section between them. Both the front sealing assembly and the rear sealing assembly include a sealing baffle and a sealing ring plate. The sealing baffle is disposed perpendicular to the tunnel axis, and the sealing ring plate is disposed perpendicularly to the edge of the sealing baffle.

[0009] Furthermore, both the front sealing assembly and the rear sealing assembly are composed of unit component blocks, each unit component block including a sealing baffle unit and a sealing ring plate unit. The sealing baffle unit is a fan-shaped plate, and the sealing ring plate unit is an arc-shaped plate. The sealing baffle unit and the sealing ring plate unit are arranged correspondingly.

[0010] Furthermore, the circulation structure includes an upper circulation slurry pipe and a lower circulation slurry pipe, the upper circulation slurry pipe being disposed above the sealing baffle of the front sealing assembly, and the lower circulation slurry pipe being disposed below the sealing baffle of the front sealing assembly.

[0011] Furthermore, the support frame includes a front support frame and a rear support frame. The front support frame is disposed on the front sealing assembly, and the rear support frame is disposed on the rear sealing assembly. Both the front and rear support frames include a first support leg, a second support leg, a third support leg, and a support base. The upper ends of the first, second, and third support legs are all connected to the support base, and the lower ends of the first, second, and third support legs are disposed on a sealing ring plate. The support base is disposed on a sealing baffle plate, and the actuating rod is connected to the support base of the front support frame and the support base of the rear support frame.

[0012] Furthermore, the segment breaking structure includes a first actuating arm and a breaking head, the first actuating arm being mounted on an actuating rod, and the breaking head being movably mounted on the outer end of the first actuating arm.

[0013] Furthermore, the segment replacement structure includes a second actuating arm, a telescopic arm, and a suction cup. The second actuating arm is mounted on an actuating rod, the telescopic arm is movably mounted at the outer end of the second actuating arm, and the suction cup is movably mounted at the outer end of the telescopic arm.

[0014] Furthermore, the gate includes a gate compartment, a first gate, and a second gate. The gate compartment is located on the sealing baffle of the front sealing assembly, the first gate is located on the front end face of the gate compartment, and the second gate is located on the rear end face of the gate compartment.

[0015] Furthermore, the sealing baffle of the front sealing assembly is provided with a grouting port and a manhole access port.

[0016] Furthermore, a sealing gasket is provided on the sealing ring plate, and the sealing gasket is located on the outside of the sealing ring plate.

[0017] The beneficial effects of this utility model are as follows:

[0018] By utilizing a sealing structure to create a closed space within the tunnel structure and forming internal support through grouting, the tunnel structure is supported through mud-water balance. This eliminates the need for external support to stabilize the strata, solving the problems existing in current strata reinforcement, effectively simplifying the replacement of encroaching segments, greatly reducing the construction cycle, and also effectively reducing construction costs.

[0019] The automated replacement of encroaching tunnel segments is achieved through a segment breaking and replacement structure, which is highly efficient and easy to operate. It can quickly replace tunnel segments and reduce safety risks during construction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a front view schematic diagram of the overall structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the front sealing assembly structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the unit component block structure of the sealing assembly of this utility model;

[0024] Figure 5 This is a schematic diagram of the support frame structure of this utility model;

[0025] Figure 6 A schematic diagram showing the configuration of the segment breaking structure of this utility model;

[0026] Figure 7 A schematic diagram showing the configuration of the segment replacement structure of this utility model;

[0027] Figure 8 This is a schematic diagram of the human gate structure of this utility model.

[0028] Reference numerals in the attached drawings: 1. Sealing structure; 11. Sealing baffle; 12. Sealing ring plate; 13. Sealing gasket; 2. Circulation structure; 21. Upper circulation slurry pipe; 22. Lower circulation slurry pipe; 3. Support structure; 31. Support frame; 311. First support leg; 312. Second support leg; 313. Third support leg; 314. Support seat; 32. Actuating rod; 4. Segment breaking structure; 41. First actuating arm; 42. Breaking head; 5. Segment replacement structure; 51. Second actuating arm; 52. Telescopic arm; 53. Suction cup; 6. Man gate; 61. Man gate chamber; 62. First gate; 63. Second gate. Detailed Implementation

[0029] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] like Figure 1 , 2 As shown, a dismantling and assembly device for replacing encroaching tunnel segments inside a shield tunnel is used to replace encroaching tunnel segments. The dismantling and assembly device includes a sealing structure 1, a circulation structure 2, a support structure 3, a segment breaking structure 4, a segment replacement structure 5, and a manhole 6. The sealing structure 1 is installed in the shield tunnel, in contact with the inner wall of the tunnel structure, and is located on both sides of the segment replacement section of the tunnel. It is used to seal the segment replacement section of the tunnel and support the corresponding tunnel structure. The circulation structure 2 and the manhole 6 are installed on the sealing structure 1. The circulation structure 2 is used for grouting and grouting into the sealing structure 1, and the manhole 6 is used for personnel entry and exit. The support structure 3 serves as an installation structure, including a support frame 31 and an actuating rod 32. Support 31 is mounted on the sealing structure 1 to support the actuating rod 32. The actuating rod 32 is movably mounted on the support frame 31 and passes through the axis of the sealing structure 1. During construction, the actuating rod 32 moves along the front-back direction of the axis, thereby driving the segment breaking structure 4 and the segment replacement structure 5 to move synchronously. The actuating rod 32 serves as the installation base for the segment breaking structure 4 and the segment replacement structure 5, and drives the segment breaking structure 4 and the segment replacement structure 5 to rotate and move. The segment breaking structure 4 and the segment replacement structure 5 are mounted on the actuating rod 32 and located in the sealing structure 1. The segment breaking structure 4 is used to break and clean the intruding segments, and the segment replacement structure 5 is used to install new segments in the corresponding positions.

[0032] like Figure 1As shown, the construction principle of this utility model is as follows: A sealing structure 1 is installed in the tunnel section with encroaching segments. The installed sealing structure 1 seals both ends of the corresponding section of the tunnel. Then, grouting is performed inside the sealing structure 1 using a circulation structure 2 installed on it to achieve mud-water balance, thereby supporting the corresponding tunnel section. This eliminates the need for external supports and ensures the stability of the strata. After grouting and mud-water balance, personnel need to enter the sealing structure 1 to remove the fastening bolts of the encroaching segments. The bolt removal process requires divers to enter and exit the sealing structure 1 through a manhole 6, ensuring that the mud-water balance within the sealing structure 1 is not disrupted. Then, the action is controlled by lever 32. First, the segment breaking structure 4 is aligned with the encroaching segment by translation and rotation. After the encroaching segment is broken and cleared by the segment breaking structure 4, the segment replacement structure 5 is aligned with the placed new segment by translation and rotation and then gripped. Then, the segment replacement structure 5 and the new segment are moved to the removal position by translation and rotation and installed. After the new segment is installed, the diver enters the sealing structure 1 through the manhole 6 to lock the connecting bolt of the new segment. After that, the diver exits the sealing structure 1, and the grout inside the sealing structure 1 is discharged by the circulation structure 2. Then the equipment can be dismantled. The above construction process only requires the sealing structure 1 to form a mud-water balance to complete the support of the tunnel structure. Compared with the support method that combines external and internal supports, the construction process of this utility model has the advantages of convenient operation and fewer construction steps, which can greatly improve construction efficiency and reduce costs.

[0033] like Figure 1 , 3 As shown, the sealing structure 1 further includes a front sealing assembly and a rear sealing assembly, which are arranged opposite to each other in the tunnel. After installation, both the front and rear sealing assemblies are perpendicular to the tunnel axis, and their outer ends are in contact with the inner wall of the tunnel. After installation, the front and rear sealing assemblies block and seal the tunnel section between them, forming a closed inner cavity together with the tunnel structure. Both the front and rear sealing assemblies include a sealing baffle 11 and a sealing ring plate 12. The sealing baffle 11 is arranged perpendicular to the tunnel axis, and the sealing ring plate 12 is arranged perpendicularly to the edge of the sealing baffle 11 and in contact with the inner wall of the tunnel. A sealing gasket 13 is provided on the sealing ring plate 12. The sealing gasket 13 is located on the outer side of the sealing ring plate 12. After the sealing ring plate 12 is installed, it squeezes the sealing gasket 13 on its outer side to achieve the seal between the sealing ring plate 12 and the inner wall of the tunnel, ensuring the sealing performance between the front and rear sealing assemblies.

[0034] like Figure 1 , 3As shown in Figure 4, further, both the front sealing assembly and the rear sealing assembly are composed of unit component blocks. These unit component blocks are assembled to form the front sealing assembly and the rear sealing assembly. Each unit component block includes a sealing baffle unit and a sealing ring plate unit. The sealing baffle unit is a fan-shaped plate, and the sealing baffle 11 is composed of sealing baffle units. The sealing ring plate unit is an arc-shaped plate, and the sealing ring plate 12 is composed of sealing ring plate units. The sealing baffle units and sealing ring plate units are correspondingly arranged. A support frame 31 is mounted on one of the unit component blocks. During installation, the unit component block with the support frame 31 is positioned below to ensure structural stability.

[0035] like Figure 1 , 2 As shown, the circulation structure 2 further includes an upper circulation grout pipe 21 and a lower circulation grout pipe 22. The upper circulation grout pipe 21 is disposed on the upper part of the sealing baffle 11 of the front sealing assembly, and the lower circulation grout pipe 22 is disposed on the lower part of the sealing baffle 11 of the front sealing assembly. The sealing baffle 11 is provided with corresponding grouting ports, and both the upper circulation grout pipe 21 and the lower circulation grout pipe 22 are connected to the grouting ports. During grouting, grouting is performed through the lower circulation grout pipe 22. When grout flows out of the upper circulation grout pipe 21, grouting has been completed in the sealing structure 1. When grout is discharged, it is discharged through the lower circulation grout pipe 22.

[0036] like Figure 1 , 2 As shown in Figure 5, further, the support frame 31 includes a front support frame and a rear support frame. The front support frame is disposed on the front sealing assembly, and the rear support frame is disposed on the rear sealing assembly. Both the front and rear support frames include a first support leg 311, a second support leg 312, a third support leg 313, and a support base 314. The support base 314 is disposed on the sealing baffle 11 and located at the center of the sealing baffle 11. The first support leg 311, the second support leg 312, and the third support leg 313 are located at the lower part of the sealing baffle 11 and extend along the support base. The radially spaced 314 support legs are connected to the upper ends of the first support leg 311, the second support leg 312, and the third support leg 313. The lower ends of the first support leg 311, the second support leg 312, and the third support leg 313 are disposed on the sealing ring plate 12. The actuating rod 32 is connected to the support seat 314 of the front support frame and the support seat 314 of the rear support frame. The actuating rod 32 is mounted between the front and rear support seats 314 and can move back and forth along the axial direction and rotate around the axis on the front and rear support seats 314.

[0037] like Figure 1 , 6As shown, the segment breaking structure 4 further includes a first actuating arm 41 and a breaking head 42. The first actuating arm 41 is fixedly mounted on the actuating rod 32 and moves synchronously with the actuating rod 32. The breaking head 42 is movably mounted on the outer end of the first actuating arm 41 and moves telescopically along the axis of the first actuating arm 41 to break and clean the encroaching segments.

[0038] like Figure 1 , 7 As shown, the segment replacement structure 5 further includes a second action arm 51, a telescopic arm 52, and a suction cup 53. The second action arm 51 is fixedly mounted on the action rod 32 and moves synchronously with the action rod 32. The telescopic arm 52 is movably mounted on the outer end of the second action arm 51 and can extend and retract along the axis of the second action arm 51, while also being able to rotate around the axis. The suction cup 53 is movably mounted on the outer end of the telescopic arm 52 and uses suction to grasp the new segment.

[0039] like Figure 1 , 2 As shown in Figures 8 and 9, the manhole 6 further includes a manhole chamber 61, a first gate 62, and a second gate 63. The manhole chamber 61 is fixedly mounted on the sealing baffle 11 of the front sealing assembly. The first gate 62 is located on the front end face of the manhole chamber 61 for divers to enter the manhole chamber 61. The second gate 63 is located on the rear end face of the manhole chamber 61 for divers to enter the sealing structure 1 from the manhole chamber 61. The sealing baffle 11 of the front sealing assembly is provided with a manhole passage, which is blocked by the second gate 63.

[0040] like Figure 1 As shown, a disassembly and assembly device for replacing tunnel segments encroached upon by other tunnel sections includes the following steps:

[0041] S1, Prefabrication of components: Prefabricate components according to design drawings and transport the prefabricated components to the construction site;

[0042] S2, Equipment Assembly: Place the new tunnel segment at the encroaching tunnel segment location in advance, and then lower the prefabricated components into the well and transport them to the encroaching tunnel segment location for assembly;

[0043] During assembly, the unit component blocks of the front sealing assembly and the rear sealing assembly are first transferred to the installation position. Then, the actuating rod 32 is first inserted into the support frame 31 of the unit component block, which is provided with the support frame 31. Then, the unit component block is supported and kept stable. Then, the unit component blocks are assembled and connected one by one to form a complete front sealing assembly and rear sealing assembly, thereby forming the sealing structure 1 and sealing and supporting the tunnel.

[0044] S3, Grouting support: The internal cavity of the sealing structure 1 is filled with mud through the circulation structure 2, and the shield tunnel is supported by the mud filling the interior of the sealing structure 1.

[0045] S4, Segment Replacement: Using the manhole 6, the diver is sent into the sealed structure 1 to remove the connecting bolts of the intruding segment. Then the diver exits the sealed structure 1, and the segment breaking structure 4 is controlled to remove the intruding segment. Then the replacement structure 5 is controlled to install the new segment, thus realizing the segment replacement.

[0046] S5, segment fixing: The diver is sent into the sealed structure 1 using the manhole 6 to lock the connecting bolts of the new segment. Then the diver exits the sealed structure 1 and the mud inside the sealed structure 1 is discharged through the circulation structure 2.

[0047] S6, Equipment Dismantling: Dismantle the equipment and transport it to the working shaft, then lift it out of the ground through the working shaft.

[0048] Furthermore, in step S4, when replacing the segment, the control rod 32 moves back and forth and rotates, so that the segment breaking structure 4 is aligned with the intruding segment, and the intruding segment is broken and removed. Then, the control rod 32 moves back and forth and rotates, so that the segment replacement structure 5 installs the new segment at the removal position.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A disassembly and assembly device for replacing encroaching tunnel segments inside a tunnel, characterized in that, The shield tunnel includes a sealing structure (1), a circulation structure (2), a support structure (3), a segment breaking structure (4), a segment replacement structure (5), and a manhole (6). The sealing structure (1) is installed in the shield tunnel to seal the segment replacement section of the tunnel and to support the tunnel. The circulation structure (2) and the manhole (6) are installed on the sealing structure (1). The support structure (3) includes a support frame (31) and an actuating rod (32). The support frame (31) is installed on the sealing structure (1), and the actuating rod (32) is movably installed on the support frame (31). The actuating rod (32) passes through the axis of the sealing structure (1) and moves back and forth along the axis. The segment breaking structure (4) and the segment replacement structure (5) are installed on the actuating rod (32) and are located in the sealing structure (1).

2. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 1, characterized in that: The sealing structure (1) includes a front sealing assembly and a rear sealing assembly. The front sealing assembly and the rear sealing assembly are arranged opposite to each other in the tunnel and block and seal the tunnel section between them. The front sealing assembly and the rear sealing assembly each include a sealing baffle (11) and a sealing ring plate (12). The sealing baffle (11) is arranged perpendicular to the tunnel axis, and the sealing ring plate (12) is arranged perpendicularly to the edge of the sealing baffle (11).

3. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 2, characterized in that: Both the front sealing assembly and the rear sealing assembly are composed of unit component blocks. Each unit component block includes a sealing baffle unit and a sealing ring plate unit. The sealing baffle unit is a fan-shaped plate, and the sealing ring plate unit is an arc-shaped plate. The sealing baffle unit and the sealing ring plate unit are arranged correspondingly.

4. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 2, characterized in that: The circulation structure (2) includes an upper circulation slurry pipe (21) and a lower circulation slurry pipe (22). The upper circulation slurry pipe (21) is located on the upper part of the sealing baffle (11) of the front sealing assembly, and the lower circulation slurry pipe (22) is located on the lower part of the sealing baffle (11) of the front sealing assembly.

5. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 2, characterized in that: The support frame (31) includes a front support frame and a rear support frame. The front support frame is mounted on the front sealing assembly, and the rear support frame is mounted on the rear sealing assembly. Both the front and rear support frames include a first support leg (311), a second support leg (312), a third support leg (313), and a support seat (314). The upper ends of the first support leg (311), the second support leg (312), and the third support leg (313) are connected to the support seat (314). The lower ends of the first support leg (311), the second support leg (312), and the third support leg (313) are mounted on the sealing ring plate (12). The support seat (314) is mounted on the sealing baffle (11). The actuating rod (32) is connected to the support seat (314) of the front support frame and the support seat (314) of the rear support frame.

6. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 1, characterized in that: The segment breaking structure (4) includes a first action arm (41) and a breaking head (42). The first action arm (41) is mounted on the action rod (32), and the breaking head (42) is movably mounted on the outer end of the first action arm (41).

7. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 1, characterized in that: The segment replacement structure (5) includes a second action arm (51), a telescopic arm (52) and a suction cup (53). The second action arm (51) is mounted on the action rod (32). The telescopic arm (52) is movably mounted on the outer end of the second action arm (51). The suction cup (53) is movably mounted on the outer end of the telescopic arm (52).

8. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 2, characterized in that: The gate (6) includes a gate compartment (61), a first gate (62), and a second gate (63). The gate compartment (61) is located on the sealing baffle (11) of the front sealing assembly. The first gate (62) is located on the front end face of the gate compartment (61), and the second gate (63) is located on the rear end face of the gate compartment (61).

9. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 2, characterized in that: The sealing baffle (11) of the front sealing assembly is provided with a grouting port and a manhole passage.

10. The disassembly and assembly equipment for replacing tunnel segments encroached upon by claim 2, characterized in that: The sealing ring plate (12) is provided with a sealing gasket (13), which is located on the outside of the sealing ring plate (12).

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