Method for disassembling shield tunneling machine in tunnel

Abstract

The invention belongs to the technical field of tunneling equipment, and particularly provides a method for disassembling a shield tunneling machine in a tunnel. When the cutter head is disassembled, the disassembling method comprises the steps that (1) a connecting structure between a left block and a middle block is cut off, so that a distance meeting the requirement for movable disassembling of the left block exists between the left block and the middle block, and a lifting appliance installed on a shell of a shield body is used for pulling the left block to retreat and turn over to a transport vehicle; (2) a connecting structure between the right block and the middle block is cut off, so that a distance meeting the requirement for movable disassembly of the right block exists between the right block and the middle block, and the left block is pulled to retreat and turn over to a transport vehicle through a lifting appliance installed on a shell of the shield body; and (3) pulling the middle block to retreat and turn over to a transport vehicle by utilizing a lifting appliance arranged on the shell of the shield body. The disassembled cutterhead is still a relatively complete cutterhead, only the cut-off connecting structures need to be correspondingly supplemented for later recycling, the middle block can be stably supported by the tunnel wall and the tunnel face all the time before disassembly, and the safety is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of tunneling equipment, and in particular relates to a method for disassembling a shield machine in a tunnel. Background Art

[0002] The full-section tunnel boring machine (hereinafter referred to as the tunnel boring machine) has the advantages of safety and high efficiency, and has been promoted and applied in various tunnel construction projects. In conventional construction projects, it is necessary to dig a starting well and a receiving well. The tunnel boring machine is assembled and started in the starting well, and then excavated to the receiving well. The tunnel boring machine can be disassembled in the receiving well, and each disassembled machine component can be lifted out of the receiving well to complete the recovery of the tunnel boring machine. However, in some projects, due to the ground construction conditions or municipal construction requirements, it is impossible to dig a receiving well. At this time, the tunnel boring equipment can only be recovered by disassembling the machine in the tunnel.

[0003] In order to facilitate the dismantling of the shield machine in the tunnel without expanding the cavern, the Chinese patent document with application publication number CN 115263333A of the applicant discloses a method for dismantling a double-shell shield machine in a tunnel, the method comprising the steps of dismantling the rear supporting system, the screw conveyor, the segment assembler, the metre beam, the rear inner block of the middle shield, the front inner block of the middle shield, the main drive, the front inner block of the front shield, the cutter disc and the like in sequence. When dismantling the inner blocks of the shield body (including the front shield and the middle shield), the metre beam, the main drive and the cutter disc, the lifting lugs on the top of the outer shell of the shield body are needed, and the universal lifting tool is connected to the lifting lugs to lift out the above-mentioned parts. When dismantling the cutter disc, the peripheral blocks of the cutter disc are first supported and fixed, and the central block of the cutter disc is lifted out using the universal lifting tool. However, in fact, when disassembling the cutterhead, this method requires cutting out a larger area of ​​the connection between the central block and the peripheral blocks, otherwise the central block cannot be pulled out smoothly, which will cause the peripheral blocks to be severely damaged and difficult to be effectively recycled, that is, the cutterhead recycling rate is low, and after the central block is removed, the other peripheral blocks will also be difficult to maintain a stable state after losing the support of the central block, and the actual operation is more dangerous. In addition, the above patent document does not disclose the specific steps for how to dismantle the segment assembly machine and the rear supporting trailer. Summary of the invention

[0004] The purpose of the present invention is to provide a method for disassembling a shield machine in a tunnel, so as to solve the technical problems in the prior art of low cutterhead recycling rate and high operation safety risk of disassembling a shield machine in a tunnel.

[0005] To achieve the above-mentioned purpose, the technical solution of the shield machine in-hole disassembly method provided by the present invention is: A method for disassembling a shield machine in a tunnel, wherein the disassembling cutter disc comprises the following steps: 1. cutting off the connection structure between the left block and the middle block so that there is a spacing between the left block and the middle block that satisfies the movable disassembly of the left block, using a sling installed on the outer shell of the shield body to pull the left block back and flip it onto a transport vehicle, and the transport vehicle transports the left block outward; 2. cutting off the connection structure between the right block and the middle block so that there is a spacing between the right block and the middle block that satisfies the movable disassembly of the right block, using a sling installed on the outer shell of the shield body to pull the left block back and flip it onto the transport vehicle, and the transport vehicle transports the right block outward; 3. using the sling installed on the outer shell of the shield body to pull the middle block back and flip it onto the transport vehicle, and the transport vehicle transports the middle block outward.

[0006] As a further improvement, the connection structure to be cut off includes connection brackets to be removed which are reserved on both sides of the main beam of the cutter disc and a cutter box on the main beam.

[0007] As a further improvement, tracks are laid in the tunnel before removing the trailer, and the trailer is lifted using a lifting tool to make the rubber wheels leave the pipe segments. Then steel wheels are installed at the bottom of the trailer, and the trailer is lowered and the lifting tool is removed. The steel wheels are used to move along the tracks to pull the trailer out.

[0008] As a further improvement, the transport vehicle used for transferring the side blocks and the middle block of the cutter disc is a rail transport vehicle with steel wheels, and the rail transport vehicle runs along the track laid in the tunnel.

[0009] As a further improvement, an assembling machine with walking wheels is used to dismantle the tooling to support the segment assembling machine, and then the connection between the meter beam and the segment assembling machine is released. The assembling machine is then dismantled and the tooling is moved to send the segment assembling machine out of the tunnel.

[0010] As a further improvement, at least some of the supporting points of the segment assembling machine on the assembly machine dismantling tooling are installed with lifting devices. During the process of releasing the connection between the rice beam and the segment assembling machine, the posture of the segment assembling machine is adjusted by adjusting the supporting height of the lifting device at the supporting points.

[0011] As a further improvement, before removing the man cabin, a support frame that can support the man cabin is installed on the front shield. After the connection between the man cabin and the front shield is released, the man cabin is pulled onto the support frame using a sling installed on the outer shell of the shield body, and then the support frame and the man cabin are removed as a whole.

[0012] As a further improvement, the main drive is removed by using a main drive removal tool. The main drive removal tool includes a frame equipped with walking wheels. The frame has a supporting surface for supporting the main drive when the main drive is placed upright. When removing the main drive, the main drive is pulled backward onto the frame, and the main drive removal tool is used to transport the main drive out of the hole.

[0013] As a further improvement, a pulling drive device for pulling the main drive backward is integrated on the frame, and when the main drive is pulled backward, the front end of the frame presses against the rear end of the front shield.

[0014] The present invention is a pioneering invention, and its beneficial effects are: when disassembling the cutter disc, the cutter disc is divided into three pieces, namely the left piece, the middle piece and the right piece, and part of the connection structure of each side piece and the middle piece is sacrificed to leave space for the removal of the side piece, and the hanger on the outer shell of the shield body left in the hole is used to pull the side pieces and the center piece back and flip them onto the transport vehicle to complete the disassembly of the cutter disc. Different from the prior art, the cutter disc of the present invention is still a relatively complete cutter disc after disassembly, and the later recycling only needs to fill in the corresponding connection structure that has been cut off, and the middle piece can always be supported by the hole wall and the face of the tunnel in a relatively stable manner before disassembly, and the safety is also higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a shield machine disassembled in an embodiment of the shield machine in-hole disassembly method of the present invention; Figure 2 It is a front view of the embodiment of the shield machine tunnel disassembly method of the present invention when the trailer is removed; Figure 3 It is a side view of the embodiment of the shield machine tunnel disassembly method of the present invention when the trailer is removed; Figure 4 It is a front view of the tooling used when removing the trailer in the embodiment of the shield machine tunnel disassembly method of the present invention; Figure 5 A side view of a tool used in removing a trailer in an embodiment of the shield machine tunnel disassembly method of the present invention; Figure 6 It is a front view of the embodiment of the shield machine tunnel disassembly method of the present invention when the segment assembly machine is dismantled; Figure 7 It is a front view of the tooling used when dismantling the segment assembly machine in the embodiment of the shield machine in-hole dismantling method of the present invention; Figure 8 It is a side view of a tool used when dismantling a segment assembly machine in an embodiment of the shield machine tunnel dismantling method of the present invention; Fig. 9 It is a front view of the embodiment of the shield machine disassembly method in the tunnel of the present invention when the person is in the cabin; Fig.10 It is a rear view of the embodiment of the shield machine disassembly method in the tunnel of the present invention when the person is in the cabin; Fig.11 It is a front view of the embodiment of the shield machine tunnel disassembly method of the present invention when the main drive is dismantled; Fig.12It is a rear view of the embodiment of the shield machine tunnel disassembly method of the present invention when the main drive is removed; Fig.13 It is a schematic structural diagram of a cutterhead disassembled in an embodiment of the method for disassembling a shield machine in a tunnel of the present invention; Fig.14 It is a schematic diagram of the blocks cut out when the cutter head is disassembled in the embodiment of the shield machine tunnel disassembly method of the present invention; Fig.15 for Fig.14 Sectional view along the midline BB; Fig.16 It is a front view of the embodiment of the shield machine tunnel disassembly method of the present invention when disassembling the left block; Fig.17 It is a front view of the embodiment of the shield machine tunnel disassembly method of the present invention when disassembling the middle block; Fig.18 It is a rear view of the embodiment of the shield machine in-tunnel disassembly method of the present invention when disassembling the middle block.

[0016] Description of reference numerals: 1. Cutterhead; 2. Main drive; 3. Valve assembly; 4. Front shield; 5. Man cabin; 6. Middle shield; 7. Segment assembly machine; 8. Trailer; 9. Lifting tool; 10. Steel wheel set; 11. Assembly machine dismantling tool; 12. Jack; 13. Support frame; 14. Lifting device; 15. Main drive dismantling tool; 16. Connecting bracket; 101. Left block; 102. Middle block; 103. Right block; 10 4. Main beam; 105. Auxiliary beam; 801. Rubber wheel; 901. Lifting cylinder; 902. Lateral support; 903. Vertical support; 1001. Wheel set support beam; 1002. Wheel set; 1101. Traveling wheel; 1102. Assembly machine support rib plate; 1103. Assembly machine support bottom plate; 1104. Jack installation sleeve; 1105. Support vertical beam; 1106. Diagonal brace; 1107. Underframe. DETAILED DESCRIPTION

[0017] For construction projects that do not have the facilities to set up ground receiving wells, disassembling the various parts of the shield machine in the tunnel is the only means to recover the shield machine. In order to facilitate the disassembly of the various components of the main machine, the applicant's previous patent application disclosed a shield machine with a double-layer shell. Specifically, the shield body includes an outer shell and multiple inner blocks located inside the outer shell. When disassembling the machine, the outer shell remains in the hole and can be used as a support foundation. A sling can be installed on the outer shell to assist in the disassembly of other components. However, when disassembling the cutterhead, it is necessary to decompose the cutterhead into a central block and multiple peripheral blocks. It is actually difficult to recover the cutterhead relatively intact, and it is also relatively dangerous to remove the peripheral blocks after the central block is removed.

[0018] In order to solve the above problems, the present invention divides the cutter disc into three parts, namely, a left block, a middle block and a right block, when disassembling the cutter disc. The left and right blocks are removed first, and the middle block is removed last. Before removing the left and right blocks, the connection structure of the sacrificial part needs to be cut off to provide a gap for the left and right blocks to move normally and to enable the movable disassembly. In this way, the cutter disc will not be divided too much, and the safety of the disassembly operation can be ensured. The present invention is further described in detail below in conjunction with the embodiments.

[0019] Specific embodiments of the shield machine in-hole disassembly method provided by the present invention: by Figure 1 For example, the shield machine disassembled in this embodiment is a slurry shield machine, which includes a cutter head 1, a main drive 2, a valve assembly 3, a front shield 4, a middle shield 6, a propulsion cylinder, a rice beam, a segment assembly machine 7, a trailer 8, etc. The front shield 4 and the middle shield 6 are double-layer structures including an outer shell and multiple inner blocks. How each part is connected and its role in the excavation process can be consistent with the existing technology and will not be described in detail here.

[0020] When disassembling the shield machine in this embodiment, the disassembly steps of the whole machine are basically consistent with the prior art, and mainly include the following steps: S1: power off, disconnect pipelines and cables; S2: remove trailer 8; S3: remove assembly machine; S4: remove middle shield 6 support; S5: remove man cabin 5; S6: remove each inner block of middle shield 6; S7: remove main drive 2; S8: remove front shield 4 blocks; S9: remove cutter head 1. The differences between this embodiment and the prior art are introduced in order of disassembly.

[0021] like Figure 1 As shown, since the trailer 8 can move by itself, in some embodiments, the trailer 8 can be directly pulled backward, and the rubber wheels 801 of the trailer 8 can be used to move along the pipe segment to pull the trailer 8 out of the hole. However, the friction between the rubber wheels 801 and the pipe segment is large, so a large force is required to drag the trailer 8, the actual energy consumption is high, and the moving speed of the trailer 8 is very slow. In addition, the rubber wheels 801 squeeze the pipe segment, which can easily cause damage to the pipe segment.

[0022] As a preferred implementation, please refer to Figure 2-Figure 5 Before removing the trailer 8, a track is first laid in the tunnel, which can be a steel I-shaped track. Then the trailer 8 is lifted by the lifting tool 9, so that the rubber wheel 801 of the trailer 8 leaves the pipe segment, and steel wheels are installed at the bottom of the trailer 8. Then the trailer 8 is lowered and the lifting tool 9 is removed, and the steel wheels are used to walk along the track to pull the trailer 8 out. The friction between the steel wheel and the steel rail is small, which can reduce the energy consumption of dragging the trailer 8, and also facilitate dragging the trailer 8 to a higher speed, so that the trailer 8 can be quickly withdrawn. At the same time, the steel rail is stressed as a whole, and the steel wheel will not directly contact the pipe segment, so as to minimize the damage to the pipe segment.

[0023] Specifically, in order to improve the stability of the trailer 8 when moving, reference may be made to Figure 4 and Figure 5 The steel wheels installed at the bottom of the trailer 8 are preferably in the form of a wheel set, i.e., a steel wheel set 10. Each set of steel wheel sets 10 includes a wheel pair support beam 1001 and a wheel pair 1002 installed on the wheel pair support beam 1001, and the wheel pair 1002 is composed of at least two steel wheels.

[0024] In order to improve the stability when lifting the trailer 8, still refer to Figure 4 and Figure 5 The lifting tooling 9 includes a frame formed by a lateral support 902 and a vertical support 903 and a plurality of lifting cylinders 901 installed on the frame. The lifting cylinders 901 can be electric cylinders or hydraulic cylinders. The straight output end of the lifting cylinder 901 can extend to lift the trailer 8.

[0025] In addition to being used for the trailer 8 to travel, the track laid at the bottom of the tunnel can actually also be used for corresponding tools or transport vehicles for transporting disassembled parts outward.

[0026] In a preferred embodiment, when disassembling the segment assembly machine 7, Figure 6-Figure 8 As shown, in order to ensure stability when disassembling the assembler, in a preferred embodiment, the assembler disassembly tool is used to support the segment assembler 7, and then the connection between the meter beam and the segment assembler 7 is released, wherein the assembler disassembly tool is equipped with a running wheel 1101, and after the connection between the meter beam and the segment assembler 7 is released, the assembler disassembly tool directly sends the segment assembler 7 out of the tunnel. In the case where tracks are laid at the bottom of the tunnel, the running wheels 1101 configured by the assembler disassembly tool can be steel wheels that travel along the tracks, and accordingly, the tracks need to extend forward to the position of the assembler.

[0027] It is not difficult to understand that the assembly machine disassembly tool can play the role of supporting the segment assembly machine 7, and it should have multiple supporting points for supporting and contacting the segment assembly machine 7. Considering that the rice beam and the segment assembly machine 7 are generally connected by flange bolts, in order to avoid the segment assembly machine 7 from tilting to one side when removing the bolts, causing the bolts to be stuck and unable to be removed, in a preferred embodiment, some or all of the supporting points of the assembly machine disassembly tool are installed with a lifting device. When the segment assembly machine 7 is actually dismantled, the lifting height of the lifting device can be adjusted to adjust the posture of the segment assembly machine 7. Specifically, the lifting device can be a jack 12, and at least one lifting device should be set, and when there is only one lifting device, when removing the bolts, the order of removing the bolts should be reasonably selected according to the supporting position that the lifting device can play. Under the effect of the lifting device, when the segment assembly machine 7 is transported outward, the posture of the segment assembly machine 7 can be flexibly adjusted to ensure the stability of the center of gravity of the segment assembly machine 7.

[0028] Since the assembler is heavy, in order to ensure that the assembler can be stably supported, such as Figure 6-Figure 8 As shown, the assembly machine dismantling tool 11 includes a base frame 1107, on which multiple support vertical beams 1105 are installed. The positions and number of the support vertical beams 1105 can be determined according to the actual support parts of the segment assembly machine 7 that can bear force. A diagonal brace 1106 is also provided between the support vertical beam 1105 and the base frame 1107 to strengthen the strength of the support vertical beam 1105. Accordingly, in order to meet the connection between the support vertical beam 1105 and the segment assembly machine 7, an assembly machine support rib plate 1102 can also be provided on the support vertical beam 1105; in order to meet the normal installation of a lifting device such as a jack 12, a jack installation sleeve 1104 can also be provided on the support vertical beam 1105.

[0029] In a preferred embodiment, when the man cabin 5 is removed, Fig. 9 and Fig.10 As shown, the support frame 13 installed on the front shield 4 can be used, and the support frame 13 can support the cabin 5. Specifically, the support frame 13 should be installed before the cabin 5 is removed. It should be noted that the removal of the cabin 5 here refers to a broad concept. It can actually be installed before the cabin 5 needs to be removed after the construction is completed. Without affecting the arrangement of other components in the area, the support frame 13 can also be installed before the construction. During the construction, the support frame 13 moves synchronously with the front shield 4, as long as the installed support frame 13 exists at this position before the connection between the front shield 4 and the cabin 5 is released. After the connection between the front shield 4 and the cabin 5 is released, the sling 14 installed on the outer shell of the shield body (the front shield 4 and / or the middle shield 6 are selected as needed) is used to pull the cabin 5 to the support frame 13, and then the support frame 13 and the cabin 5 are removed as a whole. Compared with directly pulling the cabin 5 backward, there is no "swinging" process of the cabin 5. When removing the support frame 13, multiple lifting points can be set as needed to ensure that the whole composed of the support frame 13 and the cabin 5 can be smoothly removed and finally sent out of the cave by the transport vehicle.

[0030] In a preferred embodiment, Fig.11 and Fig.12As shown, the main drive 2 including the motor (or hydraulic motor), the reduction box, and the drive box can be completely dismantled, so that some parts of the main drive 2 can be prevented from being dismantled. In order to realize the dismantling of the main drive 2, the main drive dismantling tool 15 is used in this embodiment. The main drive dismantling tool 15 includes a frame, and the frame is equipped with a running wheel (wheel). In the case where there is a track laid at the bottom of the tunnel, the running wheel can also be a steel wheel. The frame has a supporting surface for supporting the main drive 2 when the main drive 2 is placed upright (extending in the front and rear directions of the rotation axis). Since the main drive 2 is a cylindrical structure as a whole, the supporting surface can be a V-shaped surface formed by a V-shaped structure, or an arc surface. When dismantling the main drive 2, the main drive 2 is pulled back to the frame, and the main drive dismantling tool 15 is used to transport the main drive 2 out of the hole. In this embodiment, there is no process of lifting the main drive 2, which can prevent the main drive 2 from swinging and hitting other parts, thereby ensuring the integrity of the main drive 2.

[0031] In a further optimized implementation, a pulling drive device for pulling the main drive 2 backward is integrated on the frame, and when the main drive 2 is pulled backward, the front end of the frame presses against the rear end of the front shield 4. Specifically, the pulling drive device can be a winch, a hydraulic cylinder, etc. In this implementation, the reaction force of the pulling drive device enables the front end of the frame to stably press against the rear end of the front shield 4, thereby ensuring the stability of the frame.

[0032] However, it should be noted that in other implementations, it is not excluded that a pulling drive device is provided on the front shield 4 . In order to prevent the main drive removal tooling 15 from moving forward and backward, a hydraulic support leg may be installed on the main drive removal tooling 15 .

[0033] Finally, the disassembly of the cutter head 1 is described. Specifically, Figure 13-Figure 18 As shown, the cutter disc 1 is decomposed into three parts, namely a left block 101, a middle block 102 and a right block 103, wherein the left and right are judged only by the left and right relationship shown in the figure. In practice, one of the left and right sides of the middle block 102 is the left block and the other is the right block.

[0034] Disassembly of the cutter head 1 comprises the following steps: ① Cut off the connection structure between the left block and the middle block 102, so that there is a gap between the left block and the middle block 102 that satisfies the movable disassembly of the left block, and use the sling 14 installed on the outer shell of the shield to pull the left block back and flip it onto a transport vehicle (not shown in the figure), and the transport vehicle transports the left block outward; ② Cut off the connection structure between the right block and the middle block 102, so that there is a gap between the right block and the middle block 102 that satisfies the movable disassembly of the right block, and use the sling 14 installed on the outer shell of the shield to pull the left block back and flip it onto the transport vehicle, and the transport vehicle transports the right block outward; ③ Use the lifting device 14 installed on the outer shell of the shield body to pull the middle block 102 backward and flip it onto the transport vehicle, and the transport vehicle transports the middle block 102 outward.

[0035] The cutterhead 1 disassembled in this embodiment is still relatively complete, and the cut-off connecting structure does not need to be too large. In fact, about 150 mm can meet the normal movement of the left block 101 and the right block 103. The main structure of the cutterhead 1 can still be fully utilized, and the cut-off part can be supplemented for secondary use. At the same time, the middle block 102 can always be supported by the tunnel wall and the tunnel face in a relatively stable manner before disassembly, and the safety is also higher.

[0036] In order to further reduce the impact of the cut-off part on the recycling of the cutter head 1, in a preferred embodiment, for a conventional shield machine cutter head 1 including a main beam 104 and a secondary beam 105, Figure 13-Figure 15 As shown, a connecting bracket 16 can be provided on both sides of the main beam 104. Specifically, the connecting bracket 16 can be a box-shaped structure formed by welding. The left block 101 and the right block 103 are connected to the middle block 102 through the connecting bracket 16. The connecting bracket 16 is a part that is sacrificially removed later and is no longer equipped with a tool. For the part involving the main beam 104, a tool box on the main beam 104 needs to be cut off to separate the left block 101 and the right block 103 from the middle block 102. In this embodiment, the whole cutter disc 1 only needs to destroy two tool boxes to complete the recycling of the cutter disc 1, which is as convenient as possible for the secondary use of the cutter disc 1.

[0037] It should be noted that the above-mentioned movable transport vehicles or tooling can be equipped with powertrains, so that autonomous movement can be achieved. Alternatively, in the absence of powertrains, the various parts can be dragged and moved by a tractor. In addition, the process of disassembling the internal blocks of the front shield 4 and the middle shield 6 can be consistent with the prior art and will not be described in detail here. As for the problem of how to install the hanger 14 on the outer shell of the shield body, threaded holes can be reserved on the outer shell of the shield body, and the lifting ears for installing the hanger 14 can be installed at the threaded holes. Compared with welding the lifting ears, this can minimize the hot work in the hole.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for dismantling a shield machine in a tunnel, characterized in that: Disassembling the cutter disc includes the following steps: ① cutting off the connection structure between the left block and the middle block so that there is a spacing between the left block and the middle block that satisfies the movable disassembly of the left block, using the sling installed on the outer shell of the shield body to pull the left block back and flip it onto the transport vehicle, and the transport vehicle transports the left block outward; ② cutting off the connection structure between the right block and the middle block so that there is a spacing between the right block and the middle block that satisfies the movable disassembly of the right block, using the sling installed on the outer shell of the shield body to pull the left block back and flip it onto the transport vehicle, and the transport vehicle transports the right block outward; ③ using the sling installed on the outer shell of the shield body to pull the middle block back and flip it onto the transport vehicle, and the transport vehicle transports the middle block outward.

2. The method for dismantling a shield machine in a tunnel according to claim 1, characterized in that: The connection structure cut off includes connection brackets to be removed which are reserved on both sides of the main beam of the cutter disc and a cutter box on the main beam.

3. The method for dismantling a shield machine in a tunnel according to claim 1, characterized in that: Before removing the trailer, tracks are laid in the tunnel. The trailer is lifted using a lifting device to remove the rubber wheels from the pipe segments. Then steel wheels are installed at the bottom of the trailer. The trailer is lowered and the lifting device is removed. The steel wheels are used to move along the tracks to pull the trailer out.

4. The method for dismantling a shield machine in a tunnel according to claim 3 is characterized in that: The transport vehicles used for the side blocks and middle blocks of the transfer cutter disc are rail transport vehicles with steel wheels, and the rail transport vehicles run along the tracks laid in the tunnel.

5. The method for dismantling a shield machine in a tunnel according to any one of claims 1 to 4, characterized in that: The assembly machine with walking wheels is used to dismantle the tooling to support the segment assembly machine, and then the connection between the meter beam and the segment assembly machine is released. The assembly machine is then dismantled and the tooling is moved to send the segment assembly machine out of the tunnel.

6. The method for dismantling a shield machine in a tunnel according to claim 5 is characterized in that: Among the supporting points of the segment assembler that are in contact with each other on the assembly machine dismantling tooling, at least some of the points are installed with lifting devices. In the process of releasing the connection between the rice beam and the segment assembler, the posture of the segment assembler is adjusted by adjusting the supporting height of the lifting device at the supporting points.

7. The method for dismantling a shield machine in a tunnel according to any one of claims 1 to 4, characterized in that: In front of the man cabin, a support frame that can support the man cabin is installed on the front shield. After the connection between the man cabin and the front shield is released, the man cabin is pulled onto the support frame using the sling installed on the outer shell of the shield body, and then the support frame and the man cabin are removed as a whole.

8. The method for dismantling a shield machine in a tunnel according to any one of claims 1 to 4, characterized in that: The main drive is removed by using the main drive removal tooling, which includes a frame equipped with walking wheels, and the frame has a supporting surface for supporting the main drive when the main drive is placed upright. When removing the main drive, the main drive is pulled backward onto the frame, and the main drive removal tooling is used to transport the main drive out of the hole.

9. The method for dismantling a shield machine in a tunnel according to claim 8, characterized in that: A pulling drive device for pulling the main drive backward is integrated on the frame. When the main drive is pulled backward, the front end of the frame presses against the rear end of the front shield.

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