In-situ launching construction process and in-situ launching device

Abstract

The invention relates to the technical field of tunneling, and particularly discloses an in-situ launching device and a launching construction process, and the construction process comprises the following steps: laying a heading machine track extending to a tunneling construction area at the bottom of an assembly chamber in advance; supporting tools are installed on the side walls, on the two sides of the heading machine track, of the assembling chamber; after the tunnel boring machine is assembled on the tunnel boring machine track, a supporting shoe of the tunnel boring machine tightly supports the side wall of the assembling chamber through the supporting tool, and acting force counteracting on the tunnel boring machine is generated, so that the tunnel boring machine is propelled towards the construction area on the tunnel boring machine track. According to the method, launching can be directly completed in situ, redundant chambers do not need to be excavated, the construction cost is effectively reduced, the construction period is shortened, and the construction risk is reduced to a certain degree.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel excavation, and in particular to an in-situ starting construction process and an in-situ starting device. Background Art

[0002] When a tunnel boring machine (TBM) moves forward, it uses the support shoes inside the shield to support the hard rock wall of the tunnel to provide reaction force for the propulsion cylinder of the tunnel boring machine. At the start, since the shield cannot enter the tunnel and cannot support the hard rock wall of the tunnel, it is impossible to use the support shoes to provide reaction force for the propulsion cylinder of the tunnel boring machine. In response to the above problems, the current solution is mainly to use the drilling and blasting method to blast and excavate a distance to form an assembly chamber and a starting chamber with a circular cross-section. When the TBM is assembled in the assembly chamber, it will step into the starting chamber and start construction from the starting chamber. Among them, since the space of the assembly chamber does not meet the starting conditions, the TBM cannot start construction directly in the assembly chamber.

[0003] The above-mentioned starting construction method requires the excavation of a long starting chamber, which not only causes a large amount of manpower and material resources to be wasted, but also greatly prolongs the construction period. In addition, due to the long tunnel path of drilling and blasting or mechanical excavation, the safety risk is relatively large. Summary of the invention

[0004] The purpose of the present application is to provide an on-site starting construction process and an on-site starting device, which can complete the starting directly on-site without the need to excavate extra chambers, effectively reducing construction costs, shortening construction period, and reducing construction risks to a certain extent.

[0005] The embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an in-situ construction process, comprising:

[0007] Lay the TBM track extending to the tunneling construction area at the bottom of the assembly chamber in advance; and install support tooling on the side walls of the assembly chamber on both sides of the TBM track;

[0008] After the TBM track is assembled, the TBM grippers tighten the side walls of the assembly chamber through the support fixtures, generating a force that reacts on the TBM, so that the TBM is pushed forward on the TBM track toward the construction area;

[0009] After the tunnel boring machine stops advancing, the tunnel boring machine retracts the gripper shoe; the supporting tooling is driven to move a preset distance in the advancing direction, and the gripper shoe is extended again and tightens the side wall of the assembly chamber through the supporting tooling, thereby achieving secondary advancement;

[0010] Repeat the secondary advancement action until the tunnel boring machine enters the construction area.

[0011] As an optional implementation, before the support shoes of the tunnel boring machine support the side walls of the assembly chamber by means of the supporting tooling, the side walls of the assembly chamber are reinforced first.

[0012] In the second aspect, an embodiment of the present application provides an on-site starting device, which is applied to the above-mentioned on-site starting construction process; the on-site starting device includes a supporting tooling and a tunnel boring machine track; the tunnel boring machine track is laid at the bottom of the assembly chamber and extends to the tunneling construction area; the supporting tooling is arranged on both sides of the tunnel boring machine track and abuts against the side wall of the assembly chamber, and the supporting tooling can move along the side wall of the assembly chamber.

[0013] As an optional embodiment, a horizontal support track for supporting the movement of tooling is provided on the bottom surface of the assembly chamber; the extension path of the horizontal support track is consistent with the track of the tunnel boring machine, and the bottom of the supporting tooling is slidably connected to the horizontal support track.

[0014] As an optional implementation manner, a rail clamp is provided at the bottom of the supporting tooling for clamping the horizontal supporting rail so that the supporting tooling is fixed to the horizontal supporting rail.

[0015] As an optional embodiment, a lateral reinforcement structure for reinforcing the side wall is provided on the side wall of the assembly chamber, and the side of the supporting tooling facing away from the tunnel boring machine is in contact with the lateral reinforcement structure.

[0016] As an optional embodiment, the lateral reinforcement structure is a lateral support rail, and the extension path of the lateral support rail is consistent with the support rail.

[0017] As an optional embodiment, the supporting tool comprises a first tightening tool and a second tightening tool respectively arranged on both sides of the tunnel boring machine;

[0018] Both sides of the tunnel boring machine have abutment surfaces; the first tightening tool is provided with a first gripper shoe box, and the first gripper shoe box abuts against the abutment surface on the first side of the tunnel boring machine; the second tightening tool is provided with a second gripper shoe box, and the second gripper shoe box abuts against the abutment surface on the second side of the tunnel boring machine.

[0019] As an optional embodiment, the first gripper shoe box is provided with a first support box abutting the inner wall of the assembly chamber on the side facing away from the tunnel boring machine; a first telescopic adjustment member is provided between the first support box and the first gripper shoe box; and / or, the second gripper shoe box is provided with a second support box abutting the inner wall of the assembly chamber on the side facing away from the tunnel boring machine; a second telescopic adjustment member is provided between the second support box and the second gripper shoe box.

[0020] As an optional embodiment, the first gripper shoe box and the second gripper shoe box are filled with weighted particles; valves are provided at the bottom of the first gripper shoe box and the second gripper shoe box, and when the valves are opened, the weighted particles are discharged under the action of gravity.

[0021] The beneficial effects of the embodiments of the present application include:

[0022] Compared with the prior art, the on-site starting construction process and on-site starting device provided in the embodiments of the present application can directly complete the starting in the on-site assembly chamber without the need to excavate additional chambers, thereby effectively reducing construction costs, shortening construction period, and reducing construction risks to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is one of the structural schematic diagrams of the local initiation device of the embodiment of the present application;

[0025] Figure 2 This is the second structural diagram of the local initiation device of the embodiment of the present application;

[0026] Figure 3 This is the third structural diagram of the local initiation device of the embodiment of the present application;

[0027] Figure 4 This is the fourth structural schematic diagram of the on-site initiation device according to an embodiment of the present application.

[0028] Icons: 100-assembly chamber; 101-tunnel boring machine track; 102-support tooling; 103-tunnel boring machine; 104-propulsion direction; 105-horizontal support track; 106-lateral reinforcement structure; 107-first tightening tooling; 108-second tightening tooling; 109-first tightening shoe box; 110-second tightening shoe box; 111-first support box; 112-first telescopic adjustment member; 113-valve; 114-track clamp; 115-propulsion cylinder. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] When the tunnel boring machine (TBM) moves forward, it uses the support shoes inside the shield to support the hard rock wall of the tunnel to provide reaction force for the propulsion cylinder of the tunnel boring machine. At the beginning, since the shield cannot enter the tunnel and cannot support the hard rock wall of the tunnel, it is impossible to use the support shoes to provide reaction force for the propulsion cylinder of the tunnel boring machine. In response to the above problems, the current solution is mainly to use the drilling and blasting method to blast and excavate a distance to form an assembly chamber and a starting chamber with a circular cross-section. When the TBM is assembled in the assembly chamber, it will step into the starting chamber and start construction from the starting chamber. Among them, since the space of the assembly chamber does not meet the starting conditions, the TBM cannot start construction directly in the assembly chamber 100.

[0034] The above-mentioned starting construction method requires the excavation of a long starting chamber, which not only causes a large amount of manpower and material resources to be wasted, but also greatly prolongs the construction period. In addition, due to the long tunnel path of drilling and blasting or mechanical excavation, the safety risk is relatively large.

[0035] In order to solve the above technical problems, the embodiments of the present application provide a local initiation process and a local initiation process.

[0036] The in-situ construction process provided in the embodiment of the present application includes:

[0037] Reference Figure 1 , Figure 2 As shown, a tunnel boring machine track 101 extending to the tunneling construction area is laid in advance at the bottom of the assembly chamber 100; and supporting tooling 102 is installed on the side walls of the assembly chamber 100 on both sides of the tunnel boring machine track 101;

[0038] Reference Figure 3 As shown, after the tunnel boring machine 103 is assembled on the tunnel boring machine track 101, the gripper shoe of the tunnel boring machine 103 tightens the side wall of the assembly chamber 100 through the supporting tool 102, generating a force that reacts on the tunnel boring machine 103, so that the tunnel boring machine 103 is advanced toward the construction area on the tunnel boring machine track 101;

[0039] After the tunnel boring machine 103 stops advancing, the tunnel boring machine 103 retracts the gripper shoe; the supporting tool 102 is driven to move a preset distance along the advancing direction 104, and the gripper shoe is extended again and tightens the side wall of the assembly chamber 100 through the supporting tool 102, thereby achieving secondary advancement;

[0040] The secondary pushing action is repeated until the tunnel boring machine 103 enters the construction area.

[0041] Specifically, refer to Figure 2 As shown, the supporting tool 102 includes a first tightening tool 107 and a second tightening tool 108 respectively located on both sides of the tunnel boring machine 103.

[0042] The support shoes on both sides of the tunnel boring machine 103 can be connected to the supporting parts of the first tightening fixture 107 and the second tightening fixture 108 respectively; at the start, the thrust cylinder 115 on the support shoes is extended and abutted against the supporting parts of the first tightening fixture 107 and the second tightening fixture 108, and the first tightening fixture 107 and the second tightening fixture 108 abut against the side wall of the assembly chamber 100, generating a force acting on the support shoes to move the tunnel boring machine 103 forward.

[0043] It should be noted that, after the first tightening fixture 107 and the second tightening fixture 108 are in contact with the assembly chamber 100, the thrust cylinder 115 is extended to make the shield of the tunnel boring machine 103 move forward, until the thrust cylinder 115 is extended to the maximum length, and one advancement is completed. After the first tightening fixture 107 and the second tightening fixture 108 remove the abutment force with the side wall of the installation chamber, the thrust cylinder 115 is shortened to retract the support shoe, and at the same time drive the first tightening fixture 107 and the second tightening fixture 108 close to the shield. Then repeat the above steps until the thrust cylinder 115 of the entire tunnel boring machine 103 can directly hold the positions on both sides of the tunnel, and remove the in-situ starting device provided in the embodiment of the present application.

[0044] It should be noted that the tunnel boring machine 103 can be directly assembled on the tunnel boring machine track 101 in the assembly chamber 100, and after the assembly is completed, the above-mentioned method can be used to achieve on-site starting.

[0045] Compared with the prior art, the construction process provided in the embodiment of the present application can help the tunnel boring machine 103 to complete the start directly in the assembly chamber 100 without excavating extra chambers, effectively reducing construction costs, shortening construction period, and reducing construction risks to a certain extent.

[0046] As an optional implementation, before the gripper shoes of the tunnel boring machine 103 tighten the side walls of the assembly chamber 100 through the supporting tooling 102, the side walls of the assembly chamber 100 are first reinforced.

[0047] Specifically, refer to Figure 1 , Figure 2 as well as Figure 3 As shown, after laying a tunnel boring machine track 101 extending to the tunneling construction area at the bottom of the assembly chamber 100 and installing support fixtures 102 on the side walls of the assembly chamber 100 on both sides of the tunnel boring machine track 101, a lateral reinforcement structure 106 is also installed on the side walls of the assembly chamber 100. The side of the support fixture 102 facing away from the tunnel boring machine 103 abuts against the lateral reinforcement structure 106.

[0048] The purpose of the embodiment of the present application is to improve the firmness of the side wall structure of the assembly chamber 100, implement structural reinforcement on the side wall of the assembly chamber 100, prevent the side wall of the assembly chamber 100 from being damaged when the tunnel boring machine 103 starts, and enhance the safety and reliability of starting on site.

[0049] It should be noted that the lateral reinforcement structure 106 may be a lateral support rail, and the extension path of the lateral support rail is consistent with the support rail.

[0050] The embodiment of the present application ensures that the supporting tooling 102 and the rock wall of the assembly chamber 100 have a larger contact surface by extending the lateral support rails on both sides of the tunnel boring machine 103, thereby providing stable and reliable support for the first tightening tooling 107 and the second tightening tooling 108 by increasing the contact surface.

[0051] It should be noted that, refer to Figure 2 As shown, the first tightening fixture 107 and the second tightening fixture 108 can generate friction after they abut against the side wall of the assembly chamber 100. In the initial advancement, since the propulsion oil cylinder 115 on the support shoe of the tunnel boring machine 103 has a backward thrust on the first tightening fixture 107 and the second tightening fixture 108, the friction generated by the first tightening fixture 107 and the second tightening fixture 108 abutting against the side wall of the installation chamber needs to balance the backward thrust of the support shoe, so as to ensure that the first tightening fixture 107 and the second tightening fixture 108 can remain in place and achieve stable support for the propulsion oil cylinder 115.

[0052] To implement the above process, refer to Figure 1 , Figure 2 as well as Figure 3 As shown, an embodiment of the present application provides an on-site starting device, which includes a supporting tooling 102 and a tunnel boring machine track 101; the tunnel boring machine track 101 is laid at the bottom of the assembly chamber 100 and extends to the tunneling construction area; the supporting tooling 102 is arranged on both sides of the tunnel boring machine track 101 and abuts against the side wall of the assembly chamber 100, and the supporting tooling 102 can move along the side wall of the assembly chamber 100.

[0053] Specifically, a horizontal support rail 105 for supporting the movement of the tooling 102 is provided on the bottom surface of the assembly chamber 100 ; the extension path of the horizontal support rail 105 is consistent with the tunnel boring machine track 101 , and the bottom of the supporting tooling 102 is slidably connected to the horizontal support rail 105 .

[0054] It should be noted that the first tightening fixture 107 and the second tightening fixture 108 are both formed with a support portion for contacting with the tightening shoe of the tunnel boring machine 103 and generating a support force. Compared with the prior art, the in-situ launching device provided in the embodiment of the present application can help the tunnel boring machine 103 to directly complete the launching in the in-situ of the assembly chamber 100 without excavating a new launching chamber, effectively reducing the construction cost, shortening the construction period, and reducing the construction risk to a certain extent.

[0055] It should be noted that the extension path of the horizontal support rail 105 is consistent with the tunnel boring machine rail 101, and the bottom of the support tool 102 is slidably connected to the horizontal support rail 105. The embodiment of the present application effectively reduces the friction between the support tool 102 and the ground of the assembly chamber 100 through the above-mentioned arrangement, and the support tool 102 slides on the ground of the assembly chamber 100 through the horizontal support rail 105, which is conducive to the support tool 102 to achieve step-by-step advancement, shorten the step-by-step time, and improve the advancement speed of starting from the original place.

[0056] It should be noted that the lateral support rails and the horizontal support rails 105 in the embodiment of the present application are both steel rails. For example, I-shaped steel rails can be used, and the specific steel rail model can be selected by those skilled in the art as needed.

[0057] It should be noted that, after one push is completed in the embodiment of the present application, the gripper shoe is retracted and drives the first tightening fixture 107 and the second tightening fixture 108 to move on the horizontal support track 105. At this time, since the gripper shoe does not apply thrust to the support fixture 102, the friction between the support fixture 102 and the side wall of the assembly chamber 100 is greatly reduced, and the gripper shoe is retracted to generate a pulling force to drive the support fixture 102 to move forward.

[0058] It should be noted that the propulsion cylinder 115 on the support shoes on both sides is in an eight-shaped structure, and the side with the larger eight-shaped opening faces the opposite direction of propulsion. Therefore, the support fixture 102 of the embodiment of the present application can be in contact with the assembly chamber 100 during propulsion, generating a reaction force sufficient to push the tunnel boring machine 103 forward. When changing steps, the eight-shaped opening of the propulsion cylinder 115 is reduced, so that the support fixture 102 is not blocked by the friction of the side wall of the assembly chamber 100. Combined with the design of the horizontal support rail 105, it is ensured that the support fixture 102 can move forward when the support shoes are retracted. It should also be noted that the friction generated by the movement of the tunnel boring machine 103 is greater than the friction of the movement of the support fixture 102, so there is no need to worry about the tunnel boring machine 103 moving backward when the support shoes are retracted and changing steps.

[0059] Reference Figure 4 As shown, as an optional embodiment, a rail clamp 114 is provided at the bottom of the supporting tool 102 for clamping the horizontal supporting rail 105 so that the supporting tool 102 is fixed to the horizontal supporting rail 105 .

[0060] Furthermore, in the embodiment of the present application, a rail clamp 114 is also provided on the support fixture 102. It should be noted that when the support fixture 102 of the embodiment of the present application abuts against the gripper shoe, the rail clamp 114 is locked so that the support fixture 102 is fixed to the horizontal support rail 105, which is conducive to increasing the stability of the support fixture 102, facilitating the improvement of the reaction force acting on the tunnel boring machine 103, and ensuring that the tunnel boring machine 103 can be quickly advanced.

[0061] When changing steps, before the gripper shoe is retracted, the rail clamp 114 is unlocked, so that the supporting tool 102 can move smoothly on the horizontal supporting rail 105 .

[0062] Reference Figure 2 As shown, as an optional embodiment, the supporting tool 102 includes a first tightening tool 107 and a second tightening tool 108 respectively arranged on both sides of the tunnel boring machine 103;

[0063] Both sides of the tunnel boring machine 103 have abutment surfaces; a first gripper shoe box 109 is provided on the first tightening tool 107, and the first gripper shoe box 109 abuts against the abutment surface on the first side of the tunnel boring machine 103; a second gripper shoe box 110 is provided on the second tightening tool 108, and the second gripper shoe box 110 abuts against the abutment surface on the second side of the tunnel boring machine 103.

[0064] Reference Figure 3 , Figure 4 As shown, the first support box 111 abutting against the inner wall of the assembly chamber 100 is provided on the side of the first support box 109 facing away from the tunnel boring machine 103; a first telescopic adjustment member 112 is provided between the first support box 111 and the first support shoe box 109; and / or, the second support box 110 abutting against the inner wall of the assembly chamber 100 is provided on the side of the second support box 110 facing away from the tunnel boring machine 103; a second telescopic adjustment member is provided between the second support box and the second support shoe box 110.

[0065] It should be noted that, in the embodiment of the present application, a first gripper box 109 is provided on the first tightening fixture 107, and a second gripper box 110 is provided on the second tightening fixture 108. The first gripper box 109 and the second gripper box 110 clamp the tunnel boring machine 103 from both sides, which can adjust the posture position of the tunnel boring machine 103 so that the tunnel boring machine 103 has a stable body posture during the starting process.

[0066] The first tightening fixture 107 can drive the first gripper box 109 to move closer to or away from the tunnel boring machine 103 through the first telescopic adjustment member 112; the second tightening fixture 108 can drive the second gripper box 110 to move closer to or away from the tunnel boring machine 103 through the second telescopic adjustment member. Therefore, the embodiment of the present application can adjust the left and right posture of the tunnel boring machine 103.

[0067] As an optional embodiment, the first gripper shoe box 109 and the second gripper shoe box 110 are filled with weighted particles; valves 113 are provided at the bottom of the first gripper shoe box 109 and the second gripper shoe box 110, and when the valves 113 are opened, the weighted particles are discharged under the action of gravity.

[0068] The embodiment of the present application helps to increase the mass of the first gripper shoe box 109 and the second gripper shoe box 110 by disposing the weighted particles, so as to improve the stability of the entire device.

[0069] The weighted particles may be iron sand, metal particles, etc. The specific type of the weighted particles is not particularly limited in the present embodiment, and those skilled in the art may select the weighted particles as needed.

[0070] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An in-situ construction process, characterized in that: include: A tunnel boring machine track (101) extending to the tunneling construction area is laid in advance at the bottom of the assembly chamber (100); and supporting fixtures (102) are installed on the side walls of the assembly chamber (100) on both sides of the tunnel boring machine track (101); After the tunnel boring machine (103) is assembled on the tunnel boring machine track (101), the support shoe of the tunnel boring machine (103) supports the side wall of the assembly chamber (100) through the supporting tool (102), thereby generating a force that reacts on the tunnel boring machine (103), so that the tunnel boring machine (103) is advanced toward the construction area on the tunnel boring machine track (101); After the tunnel boring machine (103) stops advancing, the tunnel boring machine (103) retracts the gripper shoe; the support tooling (102) is driven to move a preset distance along the advancing direction (104), and the gripper shoe is extended again and tightens the side wall of the assembly chamber (100) through the support tooling (102), thereby achieving secondary advancement; The secondary pushing action is repeated until the tunnel boring machine (103) enters the construction area.

2. The in-situ construction process according to claim 1, characterized in that: Before the support shoes of the tunnel boring machine (103) support the side wall of the assembly chamber (100) through the supporting tool (102), the side wall of the assembly chamber (100) is reinforced.

3. A local starting device, characterized in that: Applicable to the in-situ starting construction process described in claim 1 or 2; the in-situ starting device includes a supporting tool (102) and a tunnel boring machine track (101); the tunnel boring machine track (101) is laid on the bottom of the assembly chamber (100) and extends to the tunneling construction area; the supporting tool (102) is arranged on both sides of the tunnel boring machine track (101) and abuts against the side wall of the assembly chamber (100), and the supporting tool (102) can move along the side wall of the assembly chamber (100).

4. The local starting device according to claim 3, characterized in that: A horizontal support track (105) for supporting the movement of the tooling (102) is provided on the bottom surface of the assembly chamber (100); the extension path of the horizontal support track (105) is consistent with the track (101) of the tunnel boring machine, and the bottom of the supporting tooling (102) is slidably connected to the horizontal support track (105).

5. The local starting device according to claim 4, characterized in that: A rail clamp (114) is provided at the bottom of the supporting tool (102) for clamping the horizontal supporting rail (105) so that the supporting tool (102) is fixed to the horizontal supporting rail (105).

6. The local starting device according to claim 3, characterized in that: A lateral reinforcement structure (106) for reinforcing the side wall of the assembly chamber (100) is provided, and the side of the support tooling (102) facing away from the tunnel boring machine (103) is in contact with the lateral reinforcement structure (106).

7. The local starting device according to claim 6, characterized in that: The lateral reinforcement structure (106) is a lateral support rail, and the extension path of the lateral support rail is consistent with the support rail.

8. The local starting device according to claim 3, characterized in that: The supporting tool (102) comprises a first supporting tool (107) and a second supporting tool (108) respectively arranged on both sides of the tunnel boring machine (103); Both sides of the tunnel boring machine (103) have abutment surfaces; the first clamping tool (107) is provided with a first clamping shoe box (109), and the first clamping shoe box (109) abuts against the abutment surface of the first side of the tunnel boring machine (103); the second clamping tool (108) is provided with a second clamping shoe box (110), and the second clamping shoe box (110) abuts against the abutment surface of the second side of the tunnel boring machine (103).

9. The local starting device according to claim 8, characterized in that: The first gripper shoe box (109) is provided with a first support box (111) abutting against the inner wall of the assembly chamber (100) on the side facing away from the tunnel boring machine (103); a first telescopic adjustment member (112) is provided between the first support box (111) and the first gripper shoe box (109); and / or, the second gripper shoe box (110) is provided with a second support box abutting against the inner wall of the assembly chamber (100) on the side facing away from the tunnel boring machine (103); a second telescopic adjustment member is provided between the second support box and the second gripper shoe box (110).

10. The local starting device according to claim 8, characterized in that: The first gripper shoe box (109) and the second gripper shoe box (110) are both filled with weighted particles; the first gripper shoe box (109) and the second gripper shoe box (110) are both provided with valves (113) at the bottom, and when the valves (113) are opened, the weighted particles are discharged under the action of gravity.

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