Tunnel secondary lining vault water seepage prevention construction device and construction method

Abstract

The invention relates to the technical field of tunnel construction devices, in particular to a tunnel secondary lining vault water seepage prevention construction device and a construction method.The tunnel secondary lining vault water seepage prevention construction device comprises a plurality of supporting frames, linkage rods, butt joint rods, bearing rods, angle adjusting mechanisms and self-adaptive abutting mechanisms; a linkage rod is rotationally connected to one ends of the tops of every two adjacent supporting frames, a butt joint rod is further arranged between every two adjacent supporting frames, overall radian adjustment is achieved through a sectional type supporting and abutting structure and a connecting rod mechanism, the device can adapt to tunnel vaults with different curvatures, gaps are eliminated, a universal joint is used for driving a worm to drive a worm gear, and the overall radian is adjusted. The worm gear and the worm have self-locking performance, stability after pressing is ensured, the transmission ratio design optimizes the adjusting efficiency, the mechanical transmission technology and the flexible adjusting technology are integrated, and the construction quality of secondary lining water seepage prevention is remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction equipment, and in particular to a tunnel secondary lining arch anti-seepage construction equipment and a construction method. Background Art

[0002] The anti-seepage construction of the secondary lining arch of the tunnel refers to the technical process of forming a waterproof and closed system in the arch area through laying waterproof boards, installing drainage systems and pouring secondary lining concrete after the initial support is completed.

[0003] As a key barrier between the tunnel's secondary lining and primary support, the waterproof board can effectively prevent groundwater from penetrating into the secondary lining concrete, avoiding structural corrosion or steel corrosion caused by water seepage. Its material properties can withstand 0.2-0.5MPa water pressure, ensuring the durability of the tunnel structure.

[0004] In the current related technology, in the construction of anti-seepage of the secondary lining arch of the tunnel, the edge pressing process of the waterproof board is not sufficiently fitted to the curved surface. Traditional edge pressing devices are mostly rigid flat plate structures, while the top of the tunnel is mostly a curved arc structure. Therefore, the waterproof board with a rigid flat plate structure cannot adapt to the changes in the curved surface of the tunnel arch, resulting in a gap between the end of the pressing plate and the initial support surface, forming a water seepage channel. Summary of the Invention

[0005] In order to solve the problem that the current waterproof board cannot adapt to the changes in the curvature of the tunnel vault, resulting in a gap between the end of the pressure plate and the initial support surface, forming a seepage channel, the present application provides a tunnel secondary lining vault anti-seepage construction device and construction method.

[0006] In the first aspect, the present application provides a tunnel secondary lining arch anti-seepage construction device adopting the following technical solution: A tunnel secondary lining arch anti-seepage construction device, comprising: A plurality of support frames are arranged in parallel, and a linkage rod is rotatably connected at one end of the top of two adjacent support frames, and a docking rod is further provided between the two adjacent support frames. The docking rods are provided with multiple pieces and are respectively rotatably connected to one end of the bottom of the two adjacent support frames and between the left and right adjacent linkage rods. A supporting rod is fixed between the front and rear docking rods; An angle adjustment mechanism is used to adjust the overall curvature of a combination of multiple support frames, and the angle adjustment mechanism includes a fixed cylinder, a screw, a worm gear, a fixed frame and a worm, and two supporting rods are provided above and below between two adjacent supporting frames, the fixed cylinder is fixed at the center of one of the supporting rods, the screw is fixed at the center of the other supporting rod, and the screw is slidably connected to the axis of the fixed cylinder, the worm gear is coaxially connected to the fixed cylinder at one end close to the screw, and a screw hole is provided through the center of the worm gear, the screw is threadedly matched with the screw hole, the fixed frame is fixed on the supporting rod, and the worm is rotatably connected to the fixed frame and meshes with the worm gear; An adaptive abutment mechanism is used for adaptively adjusting the abutment distance, and the adaptive abutment mechanism is arranged on a side of the support frame away from the linkage rod.

[0007] By adopting the above technical solution, using a segmented support and abutment structure, and realizing overall curvature adjustment through a connecting rod mechanism, the device can adapt to tunnel vaults with different curvatures and eliminate gaps. In addition, the worm is driven by a universal joint to drive the worm wheel, which drives the screw to be threaded in the screw hole, achieving rapid and synchronous adjustment while being unaffected by the angle. The worm wheel and worm are self-locking, ensuring stability after compression. The transmission ratio design optimizes the adjustment efficiency. The combination of mechanical transmission and flexible adjustment technology significantly improves the construction quality of secondary lining anti-seepage. In addition, the adaptive abutment mechanism is used to enable the abutment plate to adaptively adjust its height when abutting against the waterproofing plate in the tunnel, further adapting to the local uneven support surface, improving the close fit, and significantly improving the reliability and efficiency of the waterproofing plate edge pressing process.

[0008] Optionally, the angle adjustment mechanism further includes a transmission rod and a universal joint, a vertical rod is fixed in the support frame, the transmission rod is rotatably connected to the vertical rod, and the universal joint is arranged between the transmission rod and the worm.

[0009] By adopting the above technical solution and utilizing the setting of the universal joint, when the angles between the multiple support frames change, the transmission rod will not be affected and can drive the worm to move synchronously.

[0010] Optionally, the adaptive abutment mechanism includes a limit seat, a guide rod and an abutment plate, the limit seat is fixed on the side of the support frame away from the linkage rod, and an installation cavity is provided in the limit seat, the guide rod is slidably connected to the side of the limit seat away from the support frame, and is partially located in the installation cavity and partially located outside the limit seat, the abutment plate is fixed on one end of the guide rod located outside the limit seat, and the overall structure composed of the guide rod and the abutment plate is provided in multiple groups on the limit seat.

[0011] By adopting the above technical solution, the sliding connection of the guide rod allows the abutment plate to adaptively adjust its height according to the contact pressure, compensate for construction errors and structural deformation in real time, adapt to the local unevenness of the initial support surface of the tunnel, eliminate the crimping gap of the waterproof plate, and avoid the "edge leakage pressure" problem of traditional rigid pressure plates.

[0012] Optionally, the adaptive abutment mechanism also includes a connecting seat, a T-shaped plate, an adjustment plate and a sliding groove, the connecting seat is fixed at the bottom of the mounting cavity of the limit seat, the center of the T-shaped plate is rotatably connected to the connecting seat, the sliding groove is arranged through the adjustment plate, the T-shaped plate is slidably connected in the sliding groove, and the end of the guide rod away from the abutment plate abuts against the adjustment plate.

[0013] By adopting the above technical solution, the sliding fit between the T-shaped plate and the sliding groove allows the guide rod to be displaced synchronously in the radial and tangential directions, adapting to the complex curved surface changes of the primary support surface. The rotating connection design of the connecting seat enables the T-shaped plate to rotate around the axis, thereby enhancing the mechanism's ability to compensate for gaps at different angles.

[0014] Optionally, both sides of the adjustment plate and one end of the guide rod close to the adjustment plate are inclined structures, and the inclined surfaces of the two are in sliding contact with each other.

[0015] By adopting the above technical solution, the vertical pressure is decomposed into axial and tangential components by utilizing the inclined surface structure, thereby reducing the contact surface pressure and avoiding local plastic deformation. The inclined surfaces sliding against each other constitute a self-centering mechanism, and the displacement trajectory of the guide rod is forcibly constrained by the inclined surface angle, ensuring that the abutment plate is always perpendicular to the initial support surface.

[0016] Optionally, a through hole is provided on the limit seat, the guide rod is slidably connected in the through hole, and a chuck is coaxially fixed on the guide rod, the chuck is located in the installation cavity of the limit seat, and its diameter is larger than the through hole.

[0017] By adopting the above technical solution, the guide rod is limited by the chuck to prevent it from slipping and separating from the limiting seat.

[0018] Optionally, a spring is sleeved on the outside of the guide rod, one end of the spring abuts against the chuck, and the other end abuts against the inner wall of the limiting seat.

[0019] By adopting the above technical solution, the spring maintains a stable contact pressure between the abutment plate and the primary support surface of the tunnel through pre-compression force, automatically compensating for the gap changes caused by construction errors. At the same time, the spring pushes the chuck so that the guide rod always has an inward sliding tendency, ensuring that the abutment plate can be quickly reset after losing contact.

[0020] Optionally, a wheel disc is coaxially fixed on the transmission rod.

[0021] By adopting the above technical solution and utilizing the setting of the wheel, the staff can quickly rotate the transmission rod to adjust the angles between the multiple support frames.

[0022] The tunnel secondary lining arch anti-seepage construction device according to claim 1 is characterized in that a hard rubber gasket is provided in a covering manner on the side of the abutment plate away from the guide rod.

[0023] By adopting the above technical solution, the high elastic deformation ability of the rubber gasket can be used to fill the microscopic unevenness of the initial support surface, realizing gap-free crimping of the waterproof board. This design significantly improves the reliability and maintenance economy of the waterproof system through material-structure coordinated optimization.

[0024] In a second aspect, the present application also provides a construction method, comprising the following steps: S1. Curvature adjustment: Rotate the transmission rod and drive the worm through the universal joint, so that the worm gear engages and links, and then the lead screw threads and slides in the fixed cylinder, and then drives the linkage rod to link, so as to achieve rapid adjustment of the angles between multiple support frames, and thus adjust the overall curvature accordingly, so as to achieve continuous fitting of the arch surface; S2. Install and abut, connecting the overall structure composed of the multiple support frames to the external fixed structure, and abutting it with the waterproof board installed in the tunnel; S3, adaptive abutment. During abutment, the abutment plate abuts against the waterproof plate and drives the guide rod to slide. The guide rod slides on the adjustment plate and drives multiple guide rods to adaptively link through the T-shaped plate and the adjustment plate to ensure the uniformity of the fit between multiple abutment plates and the tunnel.

[0025] By adopting the above technical solution, the overall curvature radius of the device is adjusted by using worm gear transmission, and combined with the deflection compensation capability of the universal joint, it can match the curved surfaces of tunnel arches of different spans, thereby improving construction efficiency. The adaptive abutment mechanism enables each abutment plate to adaptively abut with the waterproofing plate to adapt to the concave and convex surfaces in the tunnel. This solution realizes the efficient construction and long-term maintenance of the tunnel waterproofing system through the integrated design of mechanical transmission-elastic compensation-modular installation.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The segmented support and abutment structure uses a linkage mechanism to achieve overall curvature adjustment, allowing the device to adapt to tunnel vaults of different curvatures and eliminate gaps. A universal joint drives the worm gear, which drives the lead screw in the screw hole to engage with the thread, achieving rapid and synchronous adjustment while also being unaffected by the angle. The worm gear and worm are self-locking, ensuring stability after compression. The transmission ratio design optimizes adjustment efficiency. The combination of mechanical transmission and flexible adjustment technology significantly improves the construction quality of secondary lining waterproofing. The setting of the adaptive abutment mechanism enables the abutment plate to adaptively adjust its height when abutting against the waterproofing plate in the tunnel, further adapting to the local uneven support surface, improving the close fit, and significantly improving the reliability and efficiency of the waterproofing plate edge pressing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a tunnel secondary lining arch anti-seepage construction device in this embodiment.

[0028] Figure 2 Schematic diagram of the support frame and its connection structure in this embodiment.

[0029] Figure 3 Schematic diagram of the structure of the angle adjustment mechanism in this embodiment.

[0030] Figure 4 Schematic diagram of the limit seat and its overall connection structure in this embodiment.

[0031] Figure 5 Schematic diagram of the structure of the adaptive abutment mechanism in this embodiment.

[0032] Description of reference numerals: 1. Support frame; 2. Linkage rod; 3. Docking rod; 4. Support rod; 5. Angle adjustment mechanism; 51. Fixed cylinder; 52. Screw; 53. Worm gear; 54. Fixed frame; 55. Worm; 56. Transmission rod; 57. Universal joint; 6. Adaptive abutment mechanism; 61. Limit seat; 62. Guide rod; 63. Abutment plate; 64. Connecting seat; 65. T-plate; 66. Adjustment plate; 67. Slide groove; 68. Chuck; 69. Spring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiments of the present application disclose a tunnel secondary lining vault anti-seepage construction device and a construction method.

[0035] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In a first aspect, the present application provides a tunnel secondary lining arch anti-seepage construction device: Reference Figure 1 and Figure 2 A tunnel secondary lining arch anti-seepage construction device includes a support frame 1, a linkage rod 2, a docking rod 3, a supporting rod 4, an angle adjustment mechanism 5 and an adaptive abutment mechanism 6. A plurality of support frames 1 are arranged in parallel, and a linkage rod 2 is rotatably connected at one end of the top of two adjacent support frames 1, and a docking rod 3 is further arranged between the two adjacent support frames 1. A plurality of docking rods 3 are provided, and are rotatably connected to the bottom ends of the two adjacent support frames 1, as well as between the left and right adjacent linkage rods 2. A supporting rod 4 is fixed between the front and rear docking rods 3. The angle adjustment mechanism 5 for adjusting the overall curvature of the combination of multiple support frames 1 includes a fixing cylinder 51, a screw rod 52 , worm wheel 53, fixing frame 54 and worm 55, the adaptive abutment mechanism 6 is arranged on the side of the support frame 1 away from the linkage rod 2, and the segmented support abutment structure is used to realize the overall curvature adjustment through the connecting rod mechanism, so that the device can adapt to the tunnel vaults with different curvatures and eliminate the gap. The universal joint 57 is used to drive the worm 55 to drive the worm wheel 53, and drive the screw 52 to be linked in the threaded connection of the screw hole, so as to realize fast synchronous adjustment while not being affected by the angle. The worm wheel 53 and worm 55 are self-locking to ensure stability after compression. The transmission ratio design optimizes the adjustment efficiency. The integrated mechanical transmission and flexible adjustment technology significantly improves the construction quality of the secondary lining anti-seepage.

[0037] Specifically, two supporting rods 4 are arranged above and below between two adjacent support frames 1. The fixing tube 51 is fixed at the center of one of the supporting rods 4, and the screw rod 52 is fixed at the center of the other supporting rod 4. The screw rod 52 is slidingly connected to the axis of the fixing tube 51. The worm gear 53 is coaxially connected to the fixing tube 51 at one end close to the screw rod 52, and a screw hole is provided through the center of the worm gear 53. The screw rod 52 is threadedly engaged with the screw hole. The fixing frame 54 is fixed on the supporting rod 4, and the worm 55 is rotatably connected to the fixing frame 54 and engages with the worm gear 53.

[0038] Reference Figure 3 In the embodiment of the present application, regarding the angle adjustment mechanism 5, the angle adjustment mechanism 5 also includes a transmission rod 56 and a universal joint 57. The setting of the universal joint 57 ensures that when the angle between the multiple support frames 1 changes, the transmission rod 56 will not be affected and drives the worm 55 to move synchronously.

[0039] Specifically, a vertical rod is fixed in the support frame 1 , the transmission rod 56 is rotatably connected to the vertical rod, and the universal joint 57 is provided between the transmission rod 56 and the worm 55 .

[0040] Reference Figure 4 and Figure 5Specifically, in the embodiment of the present application, the adaptive abutment mechanism 6 includes a limit seat 61, a guide rod 62 and an abutment plate 63. The sliding connection of the guide rod 62 allows the abutment plate 63 to adaptively adjust its height according to the contact pressure, compensate for construction errors and structural deformations in real time, adapt to the local unevenness of the initial support surface of the tunnel, eliminate the crimping gap of the waterproof plate, and avoid the "edge leakage pressure" problem of the traditional rigid pressure plate.

[0041] The limit seat 61 is fixed on the side of the support frame 1 away from the linkage rod 2, and an installation cavity is provided in the limit seat 61. The guide rod 62 is slidably connected to the side of the limit seat 61 away from the support frame 1, and is partially located in the installation cavity and partially located outside the limit seat 61. The abutment plate 63 is fixed on one end of the guide rod 62 located outside the limit seat 61, and the overall structure composed of the guide rod 62 and the abutment plate 63 is provided in multiple groups on the limit seat 61.

[0042] In the embodiment of the present application, the adaptive abutment mechanism 6 also includes a connecting seat 64, a T-shaped plate 65, an adjustment plate 66 and a sliding groove 67. The sliding fit between the T-shaped plate 65 and the sliding groove 67 allows the guide rod 62 to be synchronously displaced in the radial and tangential directions to adapt to the complex curved surface changes of the initial support surface, and the rotating connection design of the connecting seat 64 enables the T-shaped plate to rotate around the axis, thereby enhancing the mechanism's ability to compensate for gaps at different angles.

[0043] Specifically, the connecting seat 64 is fixed at the bottom of the mounting cavity of the limiting seat 61, the center of the T-shaped plate 65 is rotatably connected to the connecting seat 64, the sliding groove 67 is set through the adjustment plate 66, the T-shaped plate 65 is slidably connected in the sliding groove 67, and the end of the guide rod 62 away from the abutment plate 63 abuts against the adjustment plate 66.

[0044] In the embodiment of the present application, both sides of the adjustment plate 66 and the end of the guide rod 62 close to the adjustment plate 66 are inclined surface structures, and the inclined surfaces of the two slide and abut against each other. The inclined surface structure is used to decompose the vertical pressure into axial and tangential components, reduce the contact surface pressure, avoid local plastic deformation, and the inclined surfaces sliding against each other constitute a self-centering mechanism. The displacement trajectory of the guide rod 62 is forcibly constrained by the inclined surface angle to ensure that the abutment plate 63 is always perpendicular to the initial support surface.

[0045] Specifically, regarding the guide rod 62, a through hole is provided on the limit seat 61, and the guide rod 62 is slidably connected in the through hole, and a chuck 68 is coaxially fixed on the guide rod 62. The chuck 68 is located in the installation cavity of the limit seat 61, and its diameter is larger than the through hole. The chuck 68 is used to limit the guide rod 62 to prevent it from slipping and separating from the limit seat 61, and a spring 69 is provided on the outside of the guide rod 62. One end of the spring 69 abuts against the chuck 68, and the other end abuts against the inner wall of the limit seat 61. The spring 69 maintains a stable contact pressure between the abutment plate 63 and the initial support surface of the tunnel through pre-compression force, automatically compensates for the gap change caused by construction errors, and at the same time, the spring 69 pushes the chuck 68 to make the guide rod 62 always have an inward sliding tendency, ensuring that the abutment plate can be quickly reset after losing contact.

[0046] In the embodiment of the present application, a wheel is coaxially fixed on the transmission rod 56. The setting of the wheel enables the staff to quickly rotate the transmission rod 56 and thereby adjust the angles between the multiple support frames 1.

[0047] A hard rubber gasket is provided on the side of the abutment plate 63 away from the guide rod 62 in a covering manner. The high elastic deformation ability of the rubber gasket can be used to fill the microscopic unevenness of the initial support surface, thereby achieving gap-free crimping of the waterproof board. This design significantly improves the reliability and maintenance economy of the waterproof system through material-structure coordinated optimization.

[0048] The implementation principle of a tunnel secondary lining arch waterproofing construction device and construction method in an embodiment of the present application is: first, the overall curvature of the device is adjusted according to the curvature of the tunnel. During adjustment, the transmission rod 56 is rotated by the wheel, and the worm 55 is driven to rotate by the universal joint 57. At this time, the worm gear 53 is engaged and linked, so that the screw rod 52 is threaded and linked, and slides in the fixed tube 51, thereby driving the linkage rod 2 to link, thereby realizing rapid adjustment of the angles between multiple support frames 1. Then, the overall structure composed of the combination of multiple support frames 1 is connected to the external fixed structure, and it is abutted against the waterproof plate set in the tunnel. At the same time of abutment, the abutment plate 63 drives the guide rod 62 to slide, and the guide rod 62 slides on the adjustment plate 66, and drives the multiple guide rods 62 to adaptively link through the T-shaped plate 65 and the adjustment plate 66.

[0049] Secondly, refer to Figure 1-Figure 5 , the application also provides a construction method, comprising the following steps: S1, radian adjustment: rotating the transmission rod 56 and driving the worm 55 through the universal joint 57, so that the worm wheel 53 engages and links, and then the screw rod 52 is threaded and linked, and slides in the fixed cylinder 51, and then drives the linkage rod 2 to link, so as to achieve rapid adjustment of the angles between multiple support frames 1, and thus adjust the overall radian accordingly, so as to achieve continuous fitting of the arch surface; S2, installation and abutment, connecting the overall structure composed of multiple support frames 1 with the external fixed structure, and abutting it with the waterproof board set in the tunnel; S3, adaptive abutment. During abutment, the abutment plate 63 abuts against the waterproof plate and drives the guide rod 62 to slide. The guide rod 62 slides on the adjustment plate 66 and drives multiple guide rods 62 to adaptively link through the T-shaped plate 65 and the adjustment plate 66 to ensure the uniformity of the fit between the multiple abutment plates 63 and the tunnel.

[0050] This application guides the operation through S1, S2 and S3, uses worm gear transmission to adjust the overall curvature radius of the device, and combines the deflection compensation capability of the universal joint 57 to match the tunnel arch curved surfaces of different spans, thereby improving construction efficiency. The adaptive abutment mechanism enables each abutment plate 63 to adaptively abut with the waterproof plate to adapt to the concave and convex surface in the tunnel. This solution realizes efficient construction and long-term maintenance of the tunnel waterproofing system through the integrated design of mechanical transmission-elastic compensation-modular installation.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A tunnel secondary lining arch anti-seepage construction device, characterized in that: include: A support frame (1), wherein a plurality of the support frames (1) are arranged in parallel, and a linkage rod (2) is rotatably connected at one end of the top of two adjacent support frames (1), and a docking rod (3) is further arranged between the two adjacent support frames (1), wherein a plurality of the docking rods (3) are provided and are rotatably connected to one end of the bottom of the two adjacent support frames (1) and between two adjacent linkage rods (2) on the left and right, and a supporting rod (4) is fixed between the front and rear docking rods (3); An angle adjustment mechanism (5) is used to adjust the overall curvature of a plurality of support frames (1) combined, and the angle adjustment mechanism (5) includes a fixed cylinder (51), a screw (52), a worm wheel (53), a fixed frame (54) and a worm (55), two support rods (4) are provided above and below between two adjacent support frames (1), the fixed cylinder (51) is fixed at the center of one of the support rods (4), and the screw (52) is fixed at the center of the other support rod (4). The screw rod (52) is slidably connected to the axis of the fixed cylinder (51), the worm wheel (53) is coaxially connected to the fixed cylinder (51) and is close to one end of the screw rod (52), and a screw hole is provided at the center of the worm wheel (53), the screw rod (52) is threadedly matched with the screw hole, the fixing frame (54) is fixed to the supporting rod (4), and the worm (55) is rotatably connected to the fixing frame (54) and meshes with the worm wheel (53); An adaptive abutment mechanism (6) is used for adaptively adjusting an abutment distance, and the adaptive abutment mechanism (6) is arranged on a side of the support frame (1) away from the linkage rod (2).

2. A tunnel secondary lining arch anti-seepage construction device according to claim 1, characterized in that: The angle adjustment mechanism (5) further comprises a transmission rod (56) and a universal joint (57); a vertical rod is fixed in the support frame (1); the transmission rod (56) is rotatably connected to the vertical rod; and the universal joint (57) is arranged between the transmission rod (56) and the worm (55).

3. A tunnel secondary lining arch anti-seepage construction device according to claim 1, characterized in that: The adaptive abutment mechanism (6) includes a limit seat (61), a guide rod (62) and an abutment plate (63), wherein the limit seat (61) is fixed on a side of the support frame (1) away from the linkage rod (2), and an installation cavity is provided in the limit seat (61), the guide rod (62) is slidably connected to a side of the limit seat (61) away from the support frame (1), and is partially located in the installation cavity and partially located outside the limit seat (61), the abutment plate (63) is fixed on one end of the guide rod (62) located outside the limit seat (61), and a plurality of groups of the overall structure composed of the guide rod (62) and the abutment plate (63) are provided on the limit seat (61).

4. A tunnel secondary lining arch anti-seepage construction device according to claim 3, characterized in that: The adaptive abutment mechanism (6) further comprises a connecting seat (64), a T-shaped plate (65), an adjustment plate (66) and a sliding groove (67), wherein the connecting seat (64) is fixed to the bottom of the mounting cavity of the limiting seat (61), the center of the T-shaped plate (65) is rotatably connected to the connecting seat (64), the sliding groove (67) is provided through the adjustment plate (66), the T-shaped plate (65) is slidably connected in the sliding groove (67), and the end of the guide rod (62) away from the abutment plate (63) abuts against the adjustment plate (66).

5. A tunnel secondary lining arch anti-seepage construction device according to claim 4, characterized in that: Both sides of the adjustment plate (66) and one end of the guide rod (62) close to the adjustment plate (66) are inclined surface structures, and the inclined surfaces of the two slide against each other.

6. A tunnel secondary lining arch anti-seepage construction device according to claim 3, characterized in that: A through hole is provided on the limit seat (61), the guide rod (62) is slidably connected in the through hole, and a chuck (68) is coaxially fixed on the guide rod (62), the chuck (68) is located in the installation cavity of the limit seat (61), and its diameter is larger than the through hole.

7. A tunnel secondary lining vault anti-seepage construction device according to claim 6, characterized in that: The guide rod (62) is externally sleeved with a spring (69), one end of the spring (69) abuts against the chuck (68), and the other end abuts against the inner wall of the limiting seat (61).

8. A tunnel secondary lining arch anti-seepage construction device according to claim 2, characterized in that: A wheel disc is coaxially fixed on the transmission rod (56).

9. A tunnel secondary lining arch anti-seepage construction device according to claim 3, characterized in that: A hard rubber gasket is provided on the side of the abutment plate (63) away from the guide rod (62) in a covering manner.

10. A construction method, applied to a tunnel secondary lining vault anti-seepage construction device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, radian adjustment, rotating the transmission rod (56) and driving the worm (55) through the universal joint (57), so that the worm wheel (53) meshes and links, and then the screw rod (52) is threaded and linked, and slides in the fixed cylinder (51), and then drives the linkage rod (2) to link, so as to achieve rapid adjustment of the angles between the multiple support frames (1), and thus the overall radian is adjusted accordingly, so as to achieve continuous fitting of the arch surface; S2, installing and abutting, connecting the overall structure composed of a plurality of support frames (1) with the external fixed structure, and abutting it with the waterproof plate provided in the tunnel; S3, adaptive abutment. During abutment, the abutment plate (63) abuts against the waterproof plate and drives the guide rod (62) to slide. The guide rod (62) slides on the adjustment plate (66) and drives the multiple guide rods (62) to adaptively link through the T-shaped plate (65) and the adjustment plate (66), thereby ensuring uniformity of fit between the multiple abutment plates (63) and the tunnel.

Images