Pipe segment clearance converging stabilizing device and pipe segment clearance converging stabilizing method

Abstract

This invention belongs to the field of tunnel construction technology and discloses a segment clearance convergence and stabilization device and method. The segment clearance convergence and stabilization device includes a support assembly, multiple axial connectors, and multiple arc-shaped rings. Each axial connector is directly opposite a connecting strip inside the tunnel segment, and the axial connector is connected to the inner wall of the tunnel segment and extends along the axial direction of the tunnel segment. The arc-shaped rings are connected between two adjacent axial connectors, and multiple arc-shaped rings are spliced ​​to form a superior arc structure coaxial with the tunnel segment. The opening of the superior arc structure faces downward, and its apex is collinear with the apex of the tunnel segment. The support assembly can support both ends of the arc of the superior arc structure in the horizontal direction, and the support assembly can also support the apex of the superior arc structure in the vertical direction. This segment clearance convergence and stabilization device can support the tunnel segments, reduce segment settlement and convergence, and improve the safety and stability of shield tunneling.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, and in particular to a segment clearance convergence and stabilization device and method. Background Technology

[0002] With the large-scale development of urban underground space, shield tunneling technology is increasingly being used in the construction of urban roads, underground utility tunnels, and subway tunnels due to its advantages such as minimal impact on above-ground and underground structures and the surrounding environment, ensuring traffic flow, reducing road interruptions, and facilitating pipeline relocation.

[0003] Existing tunnel boring machine (TBM) construction management models are mostly standardized and generalized conventional management methods, lacking sufficient refinement and specific management logic and dynamic optimization mechanisms for the special working conditions of tunnels passing under operational sections. Traditional construction relies solely on fixed process parameters and conventional prevention and control measures, which cannot accurately match the construction needs of complex strata and adjacent operational tunnels. It is difficult to accurately grasp the deformation impact patterns and core risk control points of each construction stage, and cannot effectively suppress construction hazards such as segment settlement and convergence deformation at the root. These construction hazards not only affect the integrity of the tunnel structure but also directly disrupt the normal operation of the subway, making them core risk points that subway operating companies focus on managing.

[0004] Therefore, there is an urgent need for a segment clearance convergence and stabilization device and a segment clearance convergence and stabilization method to solve the above problems. Summary of the Invention

[0005] According to one aspect of the present invention, the objective is to provide a tunnel segment clearance convergence and stabilization device, which can support tunnel segments, reduce segment settlement and convergence, improve the safety and stability of shield tunneling, and provide reliable technical support for the optimized construction of rail transit.

[0006] To achieve this objective, the present invention adopts the following technical solution: A tunnel segment clearance convergence and stabilization device, installed inside the tunnel segments, includes: Multiple axial connectors, each of which is directly opposite a connecting strip inside the tunnel segment, the axial connectors being connected to the inner wall of the tunnel segment and extending along the axial direction of the tunnel segment; Multiple arc-shaped ring pieces are connected between two adjacent axial connecting pieces. The multiple arc-shaped ring pieces are spliced ​​together to form a superior arc structure coaxial with the tunnel segment. The opening of the superior arc structure faces downward, and the vertex of the superior arc structure is collinear with the vertex of the tunnel segment. The support component is capable of supporting both ends of the arc of the superior arc structure in the horizontal direction, and the support component is also capable of supporting the apex of the superior arc structure in the vertical direction.

[0007] Optionally, the support assembly includes a support base, two horizontal support members, and one vertical support member. The support base is disposed inside the tunnel segment. The two horizontal support members are symmetrically disposed on both sides of the support base and can extend horizontally to both sides respectively. The free ends of the two horizontal support members can respectively abut against the two ends of the arc of the superior arc structure. The vertical support member is disposed at the top of the support base and can extend vertically upward and abut against the apex of the superior arc structure.

[0008] Optionally, the support base includes a vehicle body and a cover. The vehicle body is movably mounted on a track inside the tunnel segment, and the cover is placed over the vehicle body. Two horizontal support members are symmetrically arranged on both sides of the cover, and a vertical support member is arranged on the top of the cover.

[0009] Optionally, the horizontal support includes a first mounting portion and a horizontal telescopic portion, the first mounting portion being fixedly disposed on the side of the support base, and the horizontal telescopic portion being telescopically connected to the first mounting portion in the horizontal direction; and / or, The vertical support includes a second mounting part and a vertical telescopic part. The second mounting part is fixedly disposed on the top of the support base, and the vertical telescopic part is telescopically connected to the second mounting part in the vertical direction.

[0010] Optionally, the arc-shaped ring plate and the axial connector are detachably connected.

[0011] Optionally, two adjacent arc-shaped rings are hinged together, and the hinge point between two adjacent arc-shaped rings and the connection point between the arc-shaped ring and the axial connector are offset in the axial direction of the tunnel segment.

[0012] Optionally, the tunnel segment clearance convergence and stabilization device further includes multiple arc-shaped supplementary ring plates, which are connected to the bottom of the superior arc structure and spliced ​​with the superior arc structure to form a circular ring structure.

[0013] According to another aspect of the present invention, an object is to provide a method for stabilizing tunnel segment clearance, which employs a segment clearance convergence and stabilization device as described in any of the preceding claims to support tunnel segments, the method comprising: S1. Based on the positions of multiple connecting strips on the radial cross section of the tunnel segment, axial connectors are sequentially installed along the axial direction on the inner wall of the tunnel segment, with each axial connector corresponding to one of the connecting strips. S2. Connect the arc-shaped ring pieces between two adjacent axial connecting pieces, so that multiple arc-shaped ring pieces are spliced ​​together to form a superior arc structure coaxial with the tunnel segment; S3. The arc structure is supported horizontally and vertically by the support components.

[0014] Optionally, the support assembly includes a support base, two horizontal support members, and one vertical support member. The support base is disposed inside the tunnel segment. The two horizontal support members are symmetrically disposed on both sides of the support base and can extend horizontally to both sides respectively. The free ends of the two horizontal support members can respectively abut against the two ends of the arc of the arc structure. The vertical support member is disposed at the top of the support base and can extend vertically upward and abut against the apex of the arc structure. The method for stabilizing tunnel segment clearance also includes: S31. Move the support base into the tunnel segment and close to the axial end of the arc structure; S32. The two horizontal support members are respectively abutted against the two ends of the arc of the superior arc structure, and the vertical support member is extended upward in the vertical direction and abutted against the vertex of the superior arc structure.

[0015] Optionally, the method for stabilizing the tunnel segment clearance further includes: S41. Dismantle the connection structure between the arc-shaped ring and the axial connector; S42. Simultaneously retract the horizontal support members on both sides of the support base, keep the vertical support member stationary, and make the arc-shaped ring plates on both sides of the vertical support member rotate towards the vertical support member with the vertex of the vertical support member as the center. S43. Reduce the support height of the vertical support member so that the arc-shaped ring plate is completely separated from the axial connector.

[0016] The beneficial effects of this invention are: In the tunnel segment clearance convergence and stabilization device provided by this invention, the axial connectors correspond one-to-one with the connecting strips inside the tunnel segments, facilitating positioning and installation without the need for repeated marking and positioning, thus reducing processes and time. Arc-shaped rings connect adjacent axial connectors, and multiple arc-shaped rings are spliced ​​to form a superior arc structure coaxial with the tunnel segments. The opening of the superior arc structure faces downwards, and the apex of the superior arc structure is collinear with the apex of the tunnel segments. The coaxiality of the superior arc structure with the tunnel segments allows it to form a concentric arc within the tunnel segments, providing support exceeding a semicircle and ensuring the stability of the support force. The support components can support both ends of the arc of the curved structure horizontally and also support the apex of the curved structure vertically. By supporting the curved structure in both horizontal and vertical directions, the supporting force of the support components can be evenly distributed to multiple axial connectors through multiple arc-shaped rings within the curved structure. The axial connectors then support the inner wall of the tunnel segments, thereby effectively reducing segment settlement and convergence, improving the safety and stability of shield tunneling, and providing reliable technical support for the optimized construction of rail transit. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the tunnel segment and connecting strip provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the tunnel segment clearance convergence and stabilization device provided in this embodiment of the invention, installed inside the tunnel segment.

[0019] In the picture: 100. Tunnel segments; 101. Contact strip; 1. Axial connectors; 2. Arc-shaped ring plate; 3. Support component; 31. Support base; 311. Vehicle body; 312. Cover; 32. Horizontal support component; 321. First mounting part; 322. Horizontal telescopic part; 33. Vertical support component; 331. Second mounting part; 332. Vertical telescopic part. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this invention, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] like Figure 1 and Figure 2 As shown, this embodiment provides a tunnel segment clearance convergence and stabilization device, which is installed inside the tunnel segment 100. It can support the tunnel segment 100, reduce segment settlement and convergence, improve the safety and stability of shield tunneling, and provide reliable technical support for the optimized construction of rail transit.

[0030] Specifically, refer to Figure 1 In this embodiment, the tunnel segment 100 is formed by splicing together a top segment, two upper side segments, two lower side segments, and a bottom segment in its radial cross-section. A connecting strip 101 is provided at the midpoint of the arc of each segment, and the installation positions of the connecting strip 101 are defined as six installation points: A, B, C, D, E, and H. The installation positions of the connecting strip 101 are determined according to the design drawing of the tunnel segment 100.

[0031] Continue to refer to Figure 2The tunnel segment clearance convergence and stabilization device includes a support assembly 3, multiple axial connectors 1, and multiple arc-shaped ring plates 2. Each axial connector 1 is directly opposite a connecting strip 101 inside the tunnel segment 100, and the axial connector 1 is connected to the inner wall of the tunnel segment 100 and extends along the axial direction of the tunnel segment 100. The arc-shaped ring plates 2 are connected between two adjacent axial connectors 1, and the multiple arc-shaped ring plates 2 are spliced ​​to form a superior arc structure coaxial with the tunnel segment 100. The opening of the superior arc structure faces downward, and the apex of the superior arc structure is collinear with the apex of the tunnel segment 100. The support assembly 3 can support both ends of the arc line of the superior arc structure in the horizontal direction, and the support assembly 3 can also support the apex of the superior arc structure in the vertical direction. For example, the axial connector 1 is a U-shaped channel steel.

[0032] In this embodiment, by aligning the axial connector 1 with the connecting strip 101 within the tunnel segment 100, the positioning and installation of the axial connector 1 is facilitated, eliminating the need for repeated marking and positioning, thus reducing procedures and time. By coaxializing the curved structure with the tunnel segment 100, a concentric arc is formed within the tunnel segment 100, providing support for the tunnel segment 100 exceeding a semicircle, ensuring the stability of the support force. The support assembly 3 supports the curved structure in both the horizontal and vertical directions. The support force of the support assembly 3 can be evenly distributed to multiple axial connectors 1 through multiple arc-shaped rings 2 within the curved structure, and supports the inner wall of the tunnel segment 100 through the axial connectors 1, thereby effectively reducing segment settlement and convergence, and improving the safety and stability of shield tunneling.

[0033] Optionally, in this embodiment, the axial connector 1 is installed first along the extension direction of the tunnel segment 100, and then the arc-shaped ring 2 is installed. Considering the installation weight and difficulty, it can be installed in sections AB, BC, CD, and DE respectively. Meanwhile, the arc-shaped ring 2 and the axial connector 1 are detachably connected, specifically by bolts. This design ensures connection strength and reliability, and also allows the arc-shaped ring 2 to be removed after the support is stable and transferred to another location for installation, thereby improving the utilization rate of the arc-shaped ring 2.

[0034] Specifically, two adjacent arc-shaped ring pieces 2 are hinged together. For example, two adjacent arc-shaped ring pieces 2 can be connected via a hinge shaft, rotating shaft, or hinge. This arrangement ensures the integrity of the superior arc structure formed by splicing multiple arc-shaped ring pieces 2. Even after the bolts between the arc-shaped ring pieces 2 and the axial connecting member 1 are removed, the multiple arc-shaped ring pieces 2 remain connected as a whole, facilitating the transfer of the overall structure.

[0035] More specifically, the hinge points between two adjacent arc-shaped ring pieces 2 and the connection points between the arc-shaped ring pieces 2 and the axial connector 1 are staggered in the axial direction of the tunnel segment 100 to avoid interference between the hinge points and the connection points, thereby affecting the connection between multiple arc-shaped ring pieces 2 or the reliable connection between the arc-shaped ring pieces 2 and the axial connector 1.

[0036] More specifically, the segment clearance convergence and stabilization device also includes multiple arc-shaped supplementary ring plates. These arc-shaped supplementary ring plates are attached to the bottom of the superior arc structure and spliced ​​with it to form a circular ring structure. It is understandable that after the multiple arc-shaped ring plates 2 form an "ABCDE" superior arc structure, the space at the bottom can still be used for vehicle or pedestrian passage. However, in some locations where strict control of segment convergence is required, arc-shaped supplementary ring plates can be installed in sections AH and HE, thereby transforming the superior arc structure into a circular ring structure. The circular force-bearing system can further ensure the stability and reliability of the support.

[0037] Optionally, continue to refer to Figure 2 The support assembly 3 includes a support base 31, two horizontal support members 32, and one vertical support member 33. The support base 31 is disposed within the tunnel segment 100. The two horizontal support members 32 are symmetrically arranged on both sides of the support base 31 and can extend horizontally to both sides respectively. The free ends of the two horizontal support members 32 can respectively abut against the two ends of the arc of the curved structure. The vertical support member 33 is disposed at the top of the support base 31 and can extend vertically upwards to abut against the apex of the curved structure. By setting the support base 31, installation positions and stress points are provided for the horizontal support members 32 and the vertical support member 33, ensuring the stability of the horizontal support members 32 and the vertical support member 33 between the support base 31 and the arc-shaped ring 2.

[0038] Specifically, the support base 31 includes a vehicle body 311 and a cover 312. The vehicle body 311 is movably mounted on a track within the tunnel segment 100, and the cover 312 covers the vehicle body 311. Two horizontal support members 32 are symmetrically arranged on both sides of the cover 312, and a vertical support member 33 is located on the top of the cover 312. In this embodiment, the vehicle body 311 can be a battery-powered vehicle used for filling the tunnel boring machine with excavated soil and slurry. This battery-powered vehicle can move on the track within the tunnel, thus smoothly moving to the location of the tunnel segment 100 that needs support. Since the battery-powered vehicle has an open structure, the cover 312 is provided to cover the open structure of the battery-powered vehicle to facilitate the installation of the horizontal support members 32 and the vertical support members 33. The cover 312 can be a steel cover, which has high structural strength and good support stability.

[0039] More specifically, the horizontal support member 32 includes a first mounting part 321 and a horizontal telescopic part 322. The first mounting part 321 is fixedly disposed on the side of the support base 31, and the horizontal telescopic part 322 is telescopically connected to the first mounting part 321 in the horizontal direction. The horizontal support member 32 can be a jack as in the prior art, and the base of the jack is installed on the side of the cover 312 by means of pre-embedded bolts or welding.

[0040] Accordingly, the vertical support member 33 includes a second mounting part 331 and a vertical telescopic part 332. The second mounting part 331 is fixedly disposed on the top of the support base 31, and the vertical telescopic part 332 is telescopically connected to the second mounting part 331 in the vertical direction. The vertical support member 33 can be a jack as in the prior art, and the base of the jack is installed on the top of the cover 312 by means of pre-embedded bolts or welding.

[0041] This embodiment also provides a method for stabilizing tunnel segment clearance, which uses the tunnel segment clearance stabilization device provided in this embodiment to support the tunnel segment 100.

[0042] The method for stabilizing the clearance of the tunnel segments includes the following steps: S1. Based on the positions of multiple connecting strips 101 on the radial section of the tunnel segment 100, axial connectors 1 are sequentially installed along the axial direction on the inner wall of the tunnel segment 100, with each axial connector 1 corresponding to a connecting strip 101. S2. Connect the arc-shaped ring piece 2 between two adjacent axial connecting pieces 1, so that multiple arc-shaped ring pieces 2 are spliced ​​together to form a superior arc structure coaxial with the tunnel segment 100; S3. The arc structure is supported horizontally and vertically by the support component 3.

[0043] The support component 3 supports the arc structure in both the horizontal and vertical directions. The supporting force of the support component 3 can be evenly distributed to multiple axial connectors 1 through multiple arc-shaped rings 2 within the arc structure. The axial connectors 1 then support the inner wall of the tunnel segment 100, thereby effectively reducing segment settlement and convergence, and improving the safety and stability of the tunnel boring machine.

[0044] Optionally, step S3 specifically includes: S31. Move the support base 31 into the tunnel segment 100 and close to the axial end of the arc structure. S32. Place the two horizontal support members 32 at the two ends of the arc of the superior arc structure respectively, and extend the vertical support member 33 upward in the vertical direction to abut the apex of the superior arc structure.

[0045] In this embodiment, the vertical support 33 and the two horizontal support 32 can support the arc structure simultaneously, or they can be activated sequentially to support the arc structure, both of which can ensure the support stability and reliability of the support component 3.

[0046] Furthermore, the method for stabilizing the tunnel segment clearance also includes: S41. Remove the connection structure between the arc-shaped ring 2 and the axial connector 1; S42, retract the horizontal support members 32 on both sides of the support base 31 synchronously, keep the vertical support member 33 stationary, and make the arc-shaped ring pieces 2 on both sides of the vertical support member 33 rotate towards the vertical support member 33 with the vertex of the vertical support member 33 as the center. S43. Reduce the support height of the vertical support member 33 so that the arc-shaped ring 2 is completely separated from the axial connecting member 1.

[0047] In other words, when the tunnel segment clearance convergence and stabilization device needs to be moved, it is not necessary to dismantle the entire device. First, the bolts at points A, B, D, and E can be removed. Then, the free ends of the two horizontal support members 32 can be retracted. Since there is a hinge structure between each arc-shaped ring 2, the arc-shaped ring 2 will not be disassembled. Under the premise of stable support by the vertical support member 33, the two arc segments AC and CE will rotate and retract towards the vertical support member 33. Finally, the free end of the vertical support member 33 is lowered, and the connection between the arc structure and point C is separated. In this way, the entire tunnel segment clearance convergence and stabilization device can be placed above the battery-powered vehicle and transported to other areas requiring reinforcement.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A segment clearance convergence and stabilization device, characterized in that, Located inside the tunnel segment (100), including: Multiple axial connectors (1), each of the axial connectors (1) being directly opposite a connecting strip (101) inside the tunnel segment (100), the axial connectors (1) being connected to the inner wall of the tunnel segment (100) and extending along the axial direction of the tunnel segment (100); Multiple arc-shaped ring pieces (2) are connected between two adjacent axial connecting pieces (1). The multiple arc-shaped ring pieces (2) are spliced ​​together to form a superior arc structure coaxial with the tunnel segment (100). The opening of the superior arc structure faces downward, and the vertex of the superior arc structure is collinear with the vertex of the tunnel segment (100). The support component (3) can support both ends of the arc of the superior arc structure in the horizontal direction, and the support component (3) can also support the apex of the superior arc structure in the vertical direction.

2. The segment clearance convergence and stabilization device according to claim 1, characterized in that, The support assembly (3) includes a support base (31), two horizontal support members (32), and a vertical support member (33). The support base (31) is disposed inside the tunnel segment (100). The two horizontal support members (32) are symmetrically disposed on both sides of the support base (31) and can extend to both sides in the horizontal direction respectively. The free ends of the two horizontal support members (32) can respectively abut against the two ends of the arc of the arc structure. The vertical support member (33) is disposed on the top of the support base (31) and can extend upward in the vertical direction and abut against the vertex of the arc structure.

3. The segment clearance convergence and stabilization device according to claim 2, characterized in that, The support base (31) includes a vehicle body (311) and a cover (312). The vehicle body (311) is movably mounted on a track inside the tunnel segment (100). The cover (312) covers the vehicle body (311). Two horizontal support members (32) are symmetrically arranged on both sides of the cover (312). The vertical support member (33) is located on the top of the cover (312).

4. The segment clearance convergence and stabilization device according to claim 2, characterized in that, The horizontal support member (32) includes a first mounting part (321) and a horizontal telescopic part (322). The first mounting part (321) is fixedly disposed on the side of the support base (31), and the horizontal telescopic part (322) is telescopically connected to the first mounting part (321) in the horizontal direction; and / or, The vertical support member (33) includes a second mounting part (331) and a vertical telescopic part (332). The second mounting part (331) is fixedly disposed on the top of the support base (31), and the vertical telescopic part (332) is telescopically connected to the second mounting part (331) in the vertical direction.

5. The segment clearance convergence and stabilization device according to claim 1, characterized in that, The arc-shaped ring (2) is detachably connected to the axial connector (1).

6. The segment clearance convergence and stabilization device according to claim 5, characterized in that, The two adjacent arc-shaped ring pieces (2) are hinged together, and the hinge point between the two adjacent arc-shaped ring pieces (2) and the connection point between the arc-shaped ring piece (2) and the axial connector (1) are misaligned in the axial direction of the tunnel segment (100).

7. The segment clearance convergence and stabilization device according to claim 1, characterized in that, The tunnel segment clearance convergence and stabilization device also includes multiple arc-shaped supplementary rings, which are connected to the bottom of the superior arc structure and spliced ​​with the superior arc structure to form a circular ring structure.

8. A method for stabilizing tunnel segment clearance convergence, characterized in that, The tunnel segment (100) is supported by the segment clearance convergence and stabilization device as described in any one of claims 1-7, wherein the segment clearance convergence and stabilization method includes: S1. Based on the positions of multiple connecting strips (101) on the radial cross section of the tunnel segment (100), axial connectors (1) are sequentially installed along the axial direction on the inner wall of the tunnel segment (100), and the axial connectors (1) correspond one-to-one with the connecting strips (101); S2. Connect the arc-shaped ring piece (2) between two adjacent axial connecting pieces (1) so that multiple arc-shaped ring pieces (2) are spliced ​​together to form a superior arc structure coaxial with the tunnel segment (100); S3. The arc structure is supported in both the horizontal and vertical directions by the support component (3).

9. The method for stabilizing tunnel segment clearance according to claim 8, characterized in that, The support assembly (3) includes a support base (31), two horizontal support members (32), and a vertical support member (33). The support base (31) is disposed inside the tunnel segment (100). The two horizontal support members (32) are symmetrically disposed on both sides of the support base (31) and can extend to both sides in the horizontal direction respectively. The free ends of the two horizontal support members (32) can respectively abut against the two ends of the arc of the arc structure. The vertical support member (33) is disposed on the top of the support base (31) and can extend upward in the vertical direction and abut against the vertex of the arc structure. The method for stabilizing tunnel segment clearance also includes: S31. Move the support base (31) into the tunnel segment (100) and close to the axial end of the arc structure; S32. The two horizontal support members (32) are respectively abutted against the two ends of the arc of the superior arc structure, and the vertical support member (33) is extended upward in the vertical direction and abutted against the vertex of the superior arc structure.

10. The method for stabilizing tunnel segment clearance according to claim 9, characterized in that, The method for stabilizing tunnel segment clearance also includes: S41. Dismantle the connection structure between the arc-shaped ring (2) and the axial connector (1); S42, retract the horizontal support members (32) on both sides of the support base (31) synchronously, keep the vertical support member (33) stationary, and make the arc-shaped ring pieces (2) on both sides of the vertical support member (33) rotate towards the vertical support member (33) with the vertex of the vertical support member (33) as the center; S43. Reduce the support height of the vertical support member (33) so that the arc-shaped ring (2) is completely separated from the axial connector (1).

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