A tunnel segment anti-permeation detection device and a detection method

Abstract

The application discloses a tunnel segment anti-permeation detection device and a detection method. The tunnel segment anti-permeation detection device comprises a fixed main body, a locking part and at least one segment trolley. The locking part is movably connected to the fixed main body. At least one segment trolley is arranged on the working surface below the fixed main body. The locking part and the segment trolley are connected through a lock and can be separated and assembled. Both of them are electrically connected to an electrical control system and controlled to move in a separated or assembled mode. The detection method comprises tunnel segment positioning, tunnel segment compression, pressing test support locking and tunnel segment pressing test. The device saves labor and can compress the tunnel segment without damage. The detection method is simple and easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel segment anti-permeability detection tooling, and particularly relates to a tunnel segment anti-permeability detection device and a detection method. BACKGROUND

[0002] As a key structure of a shield tunnel, the performance of a tunnel segment has a decisive influence on the quality and service life of the tunnel project, and the anti-permeability is an important indicator of the quality of the beam segment. The current anti-permeability test method is too primitive, mainly by workers manually hoisting the tunnel segment to the test mold, manually pressing and then manually punching the test, and the anti-permeability test fixture is mainly stored outdoors, the workers need to use a long lead screw to pass through both sides of the test fixture, and then use a crane to hoist the tunnel segment to the test table, and after hoisting, the workers need to place the anti-permeability test compression fixture above the tunnel segment by lifting the fixture with two people, which not only has high labor intensity and great danger for the workers, but also has unstable test data and low measurement accuracy.

[0003] An application No. CN201811165804.1 discloses a concrete segment anti-permeability testing device, which comprises a support table with an arc-shaped placement surface, a water inlet hole opened in the arc-shaped placement surface, and a water tank communicated with the water inlet hole, the arc-shaped placement surface is provided with a sealing ring for placing a sample to be tested, so that a closed space is formed between the bottom surface of the sample to be tested and the arc-shaped placement surface, and the arc-shaped placement surface is provided with a fixing assembly for fixing the sample to be tested. The device still cannot solve the problem of manually transporting the concrete segment during the anti-permeability detection process, and the sample to be tested is fixed by the fixing assembly during the test, but this fixing method will damage the concrete segment, so that the concrete segment cannot be reused after the anti-permeability detection is completed.

[0004] An application No. CN201911316541.4 discloses a segment anti-permeability detection device, which comprises a test table, support feet, a sealing ring, an automatic pressure increasing device and a connecting rod clamping mechanism; the connecting rod clamping mechanism comprises clamping pieces, a connecting rod mechanism, a hydraulic cylinder and a hydraulic power pump station; the connecting rod clamping mechanism is detachably connected with the test table or the support feet. The device cancels the upper and lower fixing members or fixing frame groups in the prior art, so that the assembly, disassembly or transfer of the whole device is more convenient and efficient, the time required for segment testing is greatly shortened, the testing efficiency is improved, and the device is especially suitable for a large number of segment testing, the time required for disassembly and assembly of the device is shortened, and the clamping and fixing position of the segment is no longer fixed, but is an active selection fixing point, so that the operation is more convenient and flexible. Therefore, the application patent solves the problem of non-damage clamping of the segment, but the fixing structure is complex and has low stability. SUMMARY

[0005] The application aims to provide a tunnel segment anti-permeation detection device and method, which solves the problems of high labor intensity of manual tunnel segment carrying and non-damage compression of the tunnel segment, and the detection method is simple and easy to operate.

[0006] To achieve the above-mentioned purpose, the application adopts the following technical solutions:

[0007] A tunnel segment anti-permeation detection device comprises a fixed main body, a locking component and at least one segment trolley, the locking component is movably connected to the fixed main body, at least one segment trolley is arranged on the working surface below the fixed main body, the locking component and the segment trolley are connected through a lock, and both are electrically connected to an electrical control system to control their separation and assembly movement.

[0008] Preferably, the fixed main body is in a gantry type, the fixed main body comprises a top rectangular truss and two groups of support columns supported at the four corners of the bottom of the rectangular truss, and a track is arranged on the working surface below the gantry type structure.

[0009] Preferably, the segment trolley comprises a traveling chassis, a pressure test support and a plurality of bearing pieces, the pressure test support is fixedly installed on the traveling chassis, the top surface of the pressure test support is an arc surface, the plurality of bearing pieces are movably installed on the arc surface, a water injection and pressure test area is arranged on the arc surface, a plurality of connecting holes are uniformly and spacedly arranged on the two side surfaces of the bearing piece, and the pressure test support and the bearing piece of at least one segment trolley arranged at the two ends of the track are different in size to adapt to tunnel segments of different specifications.

[0010] Preferably, the water injection and pressure test area is formed after a rectangular rubber frame is fixedly installed at the middle position of the top of the bearing piece, a water inlet hole and an air outlet hole are arranged on the bearing piece of the water injection and pressure test area, and the water inlet hole is in communication with the anti-permeation and pressure test assembly.

[0011] Preferably, the bearing piece is in a circular arc shape, the plurality of bearing pieces form a bearing arc surface consistent with the curvature of the tunnel segment for bearing the tunnel segment, the two side surfaces of the bearing piece are movably connected to the top of the pressure test support through a bearing frame and a plurality of shock-absorbing springs, the bearing frame comprises a bearing seat and a hinged frame hinged to the top of the bearing seat, the bearing seat is fixedly installed on the top of the pressure test support, the top of the hinged frame is fixedly connected to the bottom of the bearing piece, a plurality of shock-absorbing springs are uniformly and spacedly arranged between the bottom of the bearing piece and the top of the pressure test support, and a limiting column is arranged at the position corresponding to the four corners of the bearing piece on the top of the pressure test support.

[0012] Preferably, the locking component comprises a connecting frame connected to the bottom of the rectangular truss and two groups of compression lock assemblies, the top of the connecting frame is connected to the rectangular truss through a plurality of hydraulic cylinders, and the bottom of the connecting frame is rotatably connected with the two groups of compression lock assemblies at both ends.

[0013] Preferably, the connecting frame is a platform structure with an inverted isosceles trapezoidal longitudinal section, and one group of compression lock assemblies is rotatably connected to each of the two inclined surfaces at the bottom of the connecting frame.

[0014] Preferably, the compression lock assembly comprises an upper compression plate, the upper compression plate is a flat plate structure, one long side of the upper compression plate is hingedly connected to the bottom of the connecting frame, and the other long side of the upper compression plate is movably connected to the bottom of the connecting frame through an adjusting hydraulic cylinder; a plurality of rubber strips are arranged at the bottom of the upper compression plate in intervals, and a fixed frame is arranged at each end of the upper compression plate, the fixed frame is a trapezoidal frame structure, and the upper compression plate and the two fixed frames form a groove structure; when the plurality of hydraulic cylinders drive the compression lock assembly to move downward, the groove structure is clamped on the top of the tunnel segment and both sides, and the upper compression plate is pressed against the top surface of the tunnel segment, and a plurality of locking hydraulic cylinders are fixedly installed at the bottom of the fixed frame.

[0015] Preferably, when the upper compression plate is pressed against the top surface of the tunnel segment, the extension ends of the plurality of locking hydraulic cylinders are inserted into the segment trolley.

[0016] A measuring method of a tunnel segment anti-permeation detection device, comprising the following steps:

[0017] Step one, tunnel segment positioning, according to the size of the tunnel segment, the tunnel segment is hoisted and placed on the bearing camber surface of the corresponding size segment trolley, the first segment trolley or the second segment trolley bearing the tunnel segment is moved to below the main truss by controlling the control panel, and the plurality of hydraulic cylinders drive the two groups of compression lock assemblies to move downward, the groove structure in the two groups of compression lock assemblies continuously adjusts the position of the segment trolley during the descending process, until the tunnel segment is consistent with the direction of the groove structure.

[0018] Step two, tunnel segment pressing, the two groups of compression lock assemblies are continuously moved downward by controlling the control panel until the bottom of the upper compression plate is pressed against the inner camber surface of the tunnel segment, so that the tunnel segment and the plurality of water injection and pressing areas form a plurality of sealed spaces.

[0019] Step three, pressing test support locking, the extension ends of the plurality of locking hydraulic cylinders are inserted into the plurality of connecting holes, so that the main truss, the tunnel segment and the segment trolley are locked as a whole.

[0020] Step four, tunnel segment pressing test, the pressing pressure value of the anti-permeation pressing assembly and the fixed pressure value holding time are set on the control panel, the anti-permeation pressing assembly is connected in communication with the plurality of water inlet holes, water is injected and pressed into the plurality of water inlet holes, and the anti-permeation performance of the tunnel segment is observed through the observation window of the fixed frame.

[0021] In this invention, a segment trolley is installed on the working surface on both sides below the fixed body. The two segment trolleys have different top dimensions to support tunnel segments of different specifications, improving the applicability of the tunnel segment seepage resistance testing device. The tunnel segment is lifted by a crane to the top of one of the segment trolleys, and then the segment trolley moves the tunnel segment to the bottom of the fixed body, saving labor and reducing safety risks. The locking component can press the tunnel segment tightly, achieving non-damaging fixation of the tunnel segment. The two sets of pressure locking components in the locking component can not only press the tunnel segment placed on the segment trolley, but also lock the fixed body, locking component, tunnel segment and segment trolley into a whole, improving the stability and measurement accuracy during the measurement process. The operator can directly control the tunnel segment seepage resistance testing device through the control panel, improving the convenience of measurement. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is another schematic diagram of the overall structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the locking component structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the first segment trolley structure of the present invention;

[0026] In the diagram: 1. Fixed main body; 2. Locking component; 3. Segment trolley; 5. Tunnel segment; 6. Electrical control system; 7. Anti-seepage pressure testing assembly; 10. Rectangular truss; 11. Support column; 20. Connecting frame; 21. Pressure locking assembly; 22. Hydraulic cylinder; 30. Walking chassis; 31. Pressure testing bracket; 32. Bearing plate; 33. Connecting hole; 34. Water injection pressure testing area; 35. Bearing frame; 36. Shock-absorbing spring; 37. Limiting column; 210. Upper pressure plate; 211. Fixing frame; 212. Locking hydraulic cylinder; 213. Adjusting hydraulic cylinder. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figure 1 and Figure 2The tunnel segment seepage detection device shown includes a fixed body 1. The fixed body 1 is a gantry-shaped structure formed by welding a top rectangular truss 10 and two sets of support columns 11 at the four corners of the bottom of the rectangular truss 10. In one embodiment, a base plate is welded to the bottom of the support column 11, and the base plate is fixedly connected to the working surface by anchor bolts. The rectangular truss 10 is formed by welding channel steel, steel plate and stiffening ribs. A locking component 2 is movably connected to the bottom of the rectangular truss 10. The locking component 2 includes a connecting frame 20 that can be raised and lowered connected to the fixed body 1 and two sets of pressure locking assemblies 21. The top of the connecting frame 20 is connected to the rectangular truss 10 by multiple hydraulic cylinders 22. The extension and retraction of the multiple hydraulic cylinders 22 can realize the raising and lowering of the connecting frame 20. In this example, multiple holes are opened in the steel plate constituting the rectangular truss 10 for the extension of the multiple hydraulic cylinders 22.

[0029] like Figure 3 As shown, two sets of pressure-locking assemblies 21 are rotatably connected to the bottom ends of the connecting frame 20. The connecting frame 20 is a platform structure with an inverted isosceles trapezoidal longitudinal section. A set of pressure-locking assemblies 21 is rotatably connected to each of the two inclined surfaces at the bottom of the connecting frame 20. The pressure-locking assembly 21 includes an upper pressure plate 210, which is a flat plate structure. In this example, the upper pressure plate 210 consists of an internal frame structure and an aluminum plate fixed to the periphery of the internal frame structure by welding or fasteners to reduce the weight of the overall structure. Multiple rubber strips are spaced apart at the bottom of the upper pressure plate 210 to prevent the upper pressure plate 210 from damaging the surface of the tunnel segment 5. A fixing frame 211 is respectively provided at both ends of the upper pressure plate 210 by welding or fasteners. The fixing frame 211 has a trapezoidal frame structure. In this example, the fixing frame 211 has a trapezoidal frame structure, and the permeability of the tunnel segment 5 can be observed through the middle of the trapezoidal frame structure. The upper pressure plate 210 and the two fixing frames 211 form a groove structure. When multiple hydraulic cylinders 22 drive the locking assembly 21 to move down, the groove structure is locked on the top and sides of the tunnel segment 5, and the bottom of the upper pressure plate 210 is pressed against the top surface of the tunnel segment 5. Multiple locking hydraulic cylinders 212 are fixedly installed at the bottom of the fixing frame 211.

[0030] One long side of the upper pressure plate 210 is hinged to the bottom of the connecting frame 20, and the other long side of the upper pressure plate 210 is movably connected to the bottom of the connecting frame 20 via an adjusting hydraulic cylinder 213. The connecting frame 20 has mounting holes, and the mounting end of the adjusting hydraulic cylinder 213 can be rotatably installed in the mounting holes. The extension and retraction of the adjusting hydraulic cylinder 213 causes one side of the upper pressure plate 210 to swing. Since the other side of the upper pressure plate 210 is hinged to the connecting frame 20, when one side of the upper pressure plate 210 swings, the other side of the upper pressure plate 210 rotates, thereby adjusting the angle of the upper pressure plate 210 to accommodate the pressure of tunnel segments 5 with different curvatures.

[0031] Two segment trolleys 3 are respectively installed on the lower working surfaces on both sides of the fixed body 1. In this example, a track is laid on the lower working surface of the fixed body 1, and the two segment trolleys 3 are movably installed at both ends of the track and roll on the track. One segment trolley 3 can carry a tunnel segment 5 with a diameter of 12.4 meters, and the other segment trolley 3 can carry a tunnel pipe 5 with a diameter of 8.3 meters.

[0032] like Figure 4 As shown, the tunnel segment trolley 3 includes a traveling chassis 30, a pressure testing bracket 31, and multiple bearing plates 32. The pressure testing bracket 31 is fixedly installed on the traveling chassis 30. The top surface of the pressure testing bracket 31 is an arc-shaped surface. The multiple bearing plates 32 can be movably installed on this arc-shaped surface to ensure that after the tunnel segment 5 is placed on the multiple bearing plates 32, the multiple bearing plates 32 can fit tightly against the bottom of the tunnel segment 5, thus providing complete support. The pressure testing bracket 31 has a water injection pressure testing area 34 on its arc-shaped top surface. This area is formed by fixing a rectangular rubber frame to the top center of the support plate 32. The support plate in this area has a water inlet and an air outlet. The water inlet is connected to the anti-seepage pressure testing component 7 for water injection pressure testing. The air outlet is used to expel gas from the multiple sealed spaces formed by the tunnel segment 5 and the multiple water injection pressure testing areas 34 during water injection pressure testing. The anti-seepage pressure testing component 7 includes a water tank, a water pump, an automatic pressure tester, and a pressure gauge. The pressure testing brackets 31 and support plates 32 of the two segment trolleys located at both ends of the track are of different sizes to accommodate the testing of tunnel segments 5 of different specifications.

[0033] The bearing plate 32 is arc-shaped, and multiple bearing plates 32 form a bearing arc surface with the same curvature as the tunnel segment 5, used to support the tunnel segment 5. The two sides of the bearing plate 32 are movably connected to the top of the pressure test bracket 31 via a bearing frame 35 and multiple damping springs 36. The bearing frame 35 includes a bearing seat and a hinge frame hinged to the top of the bearing seat. The bearing seat is fixedly installed on the top of the pressure test bracket 31, and the top of the hinge frame is fixedly connected to the bottom of the bearing plate 32. Multiple damping springs 36 are evenly spaced between the bottom of the bearing plate 32 and the top of the pressure test bracket 31. The damping springs 36 can reduce the impact of water pressure on the tunnel segment 5 during the seepage resistance test. Limiting posts 37 are provided at the top of the pressure test bracket 31 and at positions corresponding to the four corners of the bearing plate 32 to prevent the bearing plate 32 from tilting due to uneven force or from undergoing large displacement due to pressure during the seepage resistance test. Multiple connecting holes 33 are evenly spaced on both sides of the bearing plate 32. When the upper pressure plate 210 is pressed on the top of the tunnel segment 5, the telescopic ends of multiple locking hydraulic cylinders 212 are inserted into the multiple connecting holes 33, which can lock the main truss 1, tunnel segment 5, and segment trolley 3 into a whole, increasing the stability of seepage detection.

[0034] Locking component 2, control panel, and segment trolley 3 are all electrically connected to electrical control system 6. Operators operate and control the work between each part through the control panel. Electrical control system 6 includes an electrical control cabinet, which houses electrical components such as servo controllers and power supplies, a PLC, and an Ethernet switch. The electrical control cabinet is equipped with a power switch and an emergency control button. The PLC control program controls the operation of the tunnel segment anti-seepage detection device. Specifically, it implements process control for the sequential actions of the entire device; controls the forward and reverse rotation of the motor on the segment trolley 3 to achieve the reciprocating motion of the segment trolley 3; controls the extension and retraction of multiple hydraulic cylinders 22 to achieve the up and down movement of the two sets of pressure locking components 21 to press the tunnel segment 5; controls the extension and retraction of multiple locking hydraulic cylinders 212 to lock the pressure test bracket 31 to increase the stability of the tunnel segment anti-seepage detection operation; and controls the water pressure identification, pressure test operation, pressure stabilization operation, and pressure compensation functions of the anti-seepage pressure test component 7.

[0035] Working principle: The tunnel segment trolley 3, with the tunnel segment 5 placed on top, is moved to the bottom of the fixed body 1 structure through the control panel electrically connected to the electrical control system 6. Then, the locking component 2 is moved down until the pressure locking assembly 21 presses the top of the tunnel segment 5 and locks it in the tunnel segment trolley 3. Then, water is injected into the water injection and pressure testing area 34 to test the impermeability of the corresponding position of the tunnel segment 5 that forms a sealed space with the water injection and pressure testing area 34.

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The measurement method of the tunnel segment seepage resistance detection device shown includes the following steps:

[0037] Step 1: Positioning of tunnel segment 5. Based on the specifications and dimensions of tunnel segment 5, it is lifted and placed on the bearing arc surface on the top of the segment trolley 3 of the corresponding size, with the inner arc surface facing upwards. The operator controls the segment trolley 3 carrying tunnel segment 5 on the control panel to move it below the fixed body 1. Multiple hydraulic cylinders 22 drive two sets of locking components 21 to move downwards. The groove structure in the two sets of locking components 21 can continuously adjust the position of the segment trolley 3 during the descent until the tunnel segment 5 is aligned with the direction of the groove structure, so that the groove structure can be locked on the top and sides of the tunnel segment 5, thereby realizing the position adjustment and initial fixation of the tunnel segment 5.

[0038] Step 2: Tunnel segment 5 is pressed down. The operator controls the control panel to continue moving the two sets of pressure locking components 21 down until the bottom of the upper pressure plate 210 is pressed against the inner arc surface of the tunnel segment 5, so that the tunnel segment 5 and multiple water injection and pressurization areas 34 form multiple sealed spaces.

[0039] Step 3: The pressure test bracket 31 is locked, and the telescopic ends of multiple locking hydraulic cylinders 212 are inserted into multiple connecting holes 33, so that the main truss 1, tunnel segment 5 and segment trolley 3 are locked into a whole.

[0040] Step 4: Pressure test of tunnel segment 5. The operator sets the pressure value and holding time of the fixed pressure value of the anti-seepage pressure testing component 7 on the control panel. In this example, the pressure value is 1.2 MPa and the holding time of the fixed pressure value is not less than 2 hours. Connect the anti-seepage pressure testing component 7 to multiple water inlets and then inject water into the multiple water inlets for pressure testing. Observe the anti-seepage performance of tunnel segment 5 through the observation window of the fixing frame 211.

[0041] The above embodiments are merely illustrative of the concept and implementation of the present invention and are not intended to limit it. Under the concept of the present invention, technical solutions without substantial changes are still within the scope of protection.

Claims

1. A tunnel segment seepage detection device, characterized in that: It includes a fixed body (1), a locking component (2) and at least one segment trolley (3). The locking component (2) is movably connected to the fixed body (1). At least one segment trolley (3) is provided on the working surface below the fixed body (1). The locking component (2) and the segment trolley (3) can be separated and assembled by a locking mechanism. Both are electrically connected to the electrical control system (6) to control their separation and assembly movements. The segment trolley (3) includes a traveling chassis (30), a pressure test bracket (31), and multiple bearing plates (32). The pressure test bracket (31) is fixedly installed on the traveling chassis (30). The top surface of the pressure test bracket (31) is an arc-shaped surface. Multiple bearing plates (32) are movably installed on the arc-shaped surface. A water injection pressure area (34) is provided on the arc-shaped surface. Multiple connecting holes (33) are evenly spaced on both sides of the bearing plates (32). The pressure test bracket (31) and bearing plates (32) of at least one segment trolley (3) on the track are of different sizes to accommodate tunnel segments (5) of different specifications. The connecting frame (20) is a platform structure with an inverted isosceles trapezoidal longitudinal section. A set of pressure locking components (21) are rotatably connected to the two inclined surfaces at the bottom of the connecting frame (20). The pressure locking assembly (21) includes an upper pressure plate (210), which is a flat plate structure. One long side of the upper pressure plate (210) is hinged to the bottom of the connecting frame (20), and the other long side of the upper pressure plate (210) is movably connected to the bottom of the connecting frame (20) through the adjustment of the second hydraulic cylinder (213). Multiple rubber strips are spaced apart at the bottom of the upper pressure plate (210). A fixing frame (211) is provided at each end of the upper pressure plate (210). The fixing frame (211) is a trapezoidal frame structure. The upper pressure plate (210) and the two fixing frames (211) form a groove structure. When multiple first hydraulic cylinders (22) drive the pressure locking assembly (21) to move down, the groove structure is locked on the top and sides of the tunnel segment, and the bottom of the upper pressure plate (210) is pressed against the top surface of the tunnel segment (5). Multiple locking hydraulic cylinders (212) are fixedly installed at the bottom of the fixing frame (211). When the upper pressure plate (210) is pressed against the top surface of the tunnel segment (5), the telescopic ends of the plurality of locking hydraulic cylinders (212) are inserted into the segment trolley (3).

2. The tunnel segment seepage detection device according to claim 1, characterized in that: The fixed body (1) is gantry-shaped. The fixed body (1) includes a top rectangular truss (10) and two sets of pillars (11) supported at the four corners of the bottom of the rectangular truss (10). A track is laid on the working surface below the gantry-shaped structure.

3. The tunnel segment seepage detection device according to claim 1, characterized in that: The water injection and pressure testing area (34) is the area formed after the rectangular rubber frame is fixedly installed at the top center of the support plate (32). A water inlet hole and an air outlet hole are provided on the support plate of the water injection and pressure testing area (34). The water inlet hole is connected to the anti-seepage pressure testing component (7).

4. The tunnel segment seepage detection device according to claim 3, characterized in that: The bearing plate (32) is arc-shaped, and multiple bearing plates (32) form a bearing arc surface with the same curvature as the tunnel segment (5) for bearing the tunnel segment (5). The two sides of the bearing plate (32) are movably connected to the top of the pressure test bracket (31) through the bearing frame (35) and multiple shock-absorbing springs (36). The bearing frame (35) includes a bearing seat and a hinge frame hinged to the top of the bearing seat. The bearing seat is fixedly installed on the top of the pressure test bracket (31). The top of the hinge frame is fixedly connected to the bottom of the bearing plate (32). Multiple shock-absorbing springs (36) are evenly spaced between the bottom of the bearing plate (32) and the top of the pressure test bracket (31). Limiting posts (37) are provided at the positions corresponding to the four corners of the bearing plate (32) on the top of the pressure test bracket (31).

5. The tunnel segment seepage detection device according to claim 2, characterized in that: The locking component (2) includes a connecting frame (20) that can be raised and lowered to the bottom of the rectangular truss (10) and two sets of pressure locking assemblies (21). The top of the connecting frame (20) is connected to the rectangular truss (10) through multiple first hydraulic cylinders (22), and the bottom ends of the connecting frame (20) are rotatably connected to two sets of pressure locking assemblies (21).

6. The measurement method of the tunnel segment impermeability testing device according to any one of claims 1 to 5, characterized in that, Includes the following steps: Step 1: Positioning of tunnel segment (5): According to the specifications and dimensions of tunnel segment (5), it is lifted and placed on the bearing arc surface on the top of the segment trolley (3) of the corresponding size. By controlling the control panel, the segment trolley (3) carrying the tunnel segment (5) is moved to the bottom of the fixed body (1). Multiple first hydraulic cylinders (22) drive two sets of pressure locking components (21) to move down. The groove structure in the two sets of pressure locking components (21) continuously adjusts the position of the segment trolley (3) during the descent until the tunnel segment (5) is aligned with the direction of the groove structure. Step 2: Tunnel segment (5) is pressed down. The control panel continues to move down two sets of pressure locking components (21) until the bottom of the upper pressure plate (210) is pressed against the inner arc surface of the tunnel segment (5), so that the tunnel segment (5) and multiple water injection and pressurization areas (34) form multiple sealed spaces. Step 3: The pressure test bracket (31) is locked, and the telescopic ends of multiple locking hydraulic cylinders (212) are inserted into multiple connecting holes (33) to lock the fixed body (1), tunnel segment (5) and segment trolley (3) into a whole. Step 4: Pressure test of tunnel segment (5). Set the pressure value and holding time of the anti-seepage pressure component (7) on the control panel. Connect the anti-seepage pressure component (7) to multiple water inlets and inject water into the multiple water inlets to pressurize. Observe the anti-seepage performance of the tunnel segment (5) through the observation window of the fixing frame (211).

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