Performance test device and method for waterproofing system of shield segment joint considering bolt holes

Abstract

The present invention discloses a shield segment joint waterproof system performance test device and method considering bolt holes, comprising: a base frame; two groups of segment sealing pad pasting plates arranged opposite to each other, wherein one group of segment sealing pad pasting plates is fixed on the base frame, and the other group of segment sealing pad pasting plates is slidably arranged on the base frame, and the inner surfaces of the segment sealing pad pasting plates opposite to each other are provided with three annular pasting grooves from the inside to the outside, and rubber sealing pads are detachably arranged in the pasting grooves, and bent bolt holes and straight bolt holes are provided on the segment sealing pad pasting plates corresponding to the outer pasting grooves and the middle pasting grooves, and a thickening plate is provided on the outward side of the segment sealing pad pasting plate, and a plurality of bolt sleeves are provided on the thickening plate, and the bolt sleeves are coaxially connected to the corresponding bent bolt holes / straight bolt holes, and a circle of caulking grooves is arranged around the inner surface of the segment sealing pad pasting plate. The present invention is used to test the sealing performance of bolt holes and provide a reference for shield waterproof design.

Description

Technical Field

[0001] The present invention relates to the technical field of shield tunneling construction. More specifically, the present invention relates to a performance test device and method for the waterproof system of shield segment joints considering bolt holes. Background Art

[0002] At present, shield segments in China are mainly connected by bolts. In order to prevent water leakage from the bolt holes due to the failure of the segment seal, water-swellable sealing rings are generally arranged at both ends of the connecting bolts. After contacting the seepage water, they expand to stop the water. However, due to the poor shear resistance of the water-swellable material, during the tightening process of the bolts, it is easily damaged by the shearing action of the outer bevel edges of the bolt holes due to eccentricity, resulting in the failure of the bolt hole waterproofing. At present, in order to improve the stability of the sealing ring, some projects have started to use ethylene propylene diene monomer (EPDM) sealing rings. However, the EPDM sealing rings are relatively thick, which is likely to affect the tightening force of the bolts. At the same time, it is difficult to detect the waterproof performance and damage condition after compression. Due to the high failure rate of the bolt hole seal, bolt hole leakage has become an important disease in the leakage of shield tunnels during the operation period. Moreover, as tunnels in China develop towards longer, larger, higher, and deeper directions, many super-large diameter shields adopt double-layer waterproofing inside and outside. However, due to the failure of the bolt holes, when the outer waterproofing fails, the seepage water flows out from the bolt holes, resulting in the failure of the entire segment waterproofing. At present, the current specifications only give the test methods for the compression and waterproof performance of the segment joint gaskets, and do not make relevant regulations on the performance of the bolt hole waterproof system. At the same time, the industry mainly focuses on improving the waterproof type of the bolt holes, and rarely tests the performance of the bolt hole waterproof system. Summary of the Invention

[0003] The object of the present invention is to provide a performance test device and method for the waterproof system of shield segment joints considering bolt holes, which are used to test the sealing performance of bolt holes and provide a reference for shield waterproof design.

[0004] The technical solution adopted by the present invention to solve this technical problem is: a performance test device for the waterproof system of shield segment joints considering bolt holes, comprising:

[0005] A chassis;

[0006] Two groups of relatively arranged segment gasket paste plates, one group of segment gasket paste plates is fixed on the chassis, and the other group of segment gasket paste plates is slidably arranged on the chassis. Three annular paste grooves are arranged from the inside to the outside on the inner surfaces of the pairwise opposite segment gasket paste plates. Rubber gaskets are detachably arranged in the paste grooves. Bent bolt holes and straight bolt holes are opened on the segment gasket paste plates corresponding to the outer paste groove and the middle paste groove. A thickening plate is arranged on the outer side of the segment gasket paste plate. A plurality of bolt sleeves are arranged on the thickening plate. The bolt sleeves are coaxially communicated with the corresponding bent bolt holes / straight bolt holes. 1-2 groups of fastening bolt holes are arranged at the four corners of the segment gasket paste plate. A sealing groove is arranged around the inner surface of the segment gasket paste plate;

[0007] A pair of chutes are symmetrically arranged on the chassis. The segment gasket paste plate is slidably connected to the chute through a slider. The cross-section of the chute is a convex-shaped groove. The slider includes a convex-shaped connecting block and a longitudinal adjusting bolt. The connecting block is slidably connected to the chute. The size of the chute is slightly larger than the size of the connecting block. The upper end of the connecting block is connected to the longitudinal adjusting bolt. An adjusting nut is arranged on the longitudinal adjusting bolt. The longitudinal adjusting bolt penetrates into the bottom of the thickening plate. Transverse adjusting bolt holes are symmetrically opened on the side of the chassis close to the fixed segment gasket paste plate and are equipped with transverse adjusting bolts. The transverse adjusting bolt holes vertically penetrate the same-side chute. A reaction frame is arranged on the frame body. The reaction frame is fixed with an oil cylinder. The oil cylinder is used to push the thickening plate to move along the chute;

[0008] An exhaust hole and a water injection hole are arranged at the central part of the fixed segment gasket paste plate and penetrate through the thickening plate. The fixed segment gasket paste plate is also provided with four groups of pressure gauges to respectively detect the pressures in the four areas separated by the three annular paste grooves on the segment gasket paste plate.

[0009] Preferably, chamfers are arranged on the bent bolt holes and the straight bolt holes, and sealing rings are arranged at the chamfered parts.

[0010] Preferably, it also includes a high and low temperature integrated machine and a circulation pipeline. A clamping groove is arranged on the thickening plate. The circulation pipeline is fixed in the clamping groove and is arranged between the segment gasket paste plate and the thickening plate. The circulation pipeline is arranged in a serpentine shape. The water inlet end of the circulation pipeline is connected to the water outlet joint of the high and low temperature integrated machine through a pipeline. The water outlet end of the circulation pipeline is connected to the water inlet joint of the high and low temperature integrated machine through a pipeline.

[0011] The present invention also provides a test method for bolt hole waterproofing using the shield segment joint waterproofing system performance test device considering bolt holes, including the following steps:

[0012] S1. Number the three annular adhesive grooves provided on the segment gasket paste board from the outside to the inside as 1, 2, and 3;

[0013] S2. According to the actual situation of the shield segment rubber gasket, paste the corresponding two rubber gaskets in the adhesive grooves, and simulate the two situations of internal and external double seals and external double seals by adjusting the positions of the rubber gaskets and the bent bolt holes / straight bolt holes;

[0014] When simulating the internal and external double seals of the shield segment, first paste the rubber gaskets 1, 2 or 1, 3;

[0015] When simulating the external double gasket, paste the gaskets 2 and 3;

[0016] S3. Slide the segment gasket paste board, and according to the actual misalignment amount of the shield segment, adjust the position of the segment gasket paste board through the horizontal adjustment bolt and the vertical adjustment bolt until the misalignment amount between the two segment gasket paste boards corresponds to the actual misalignment amount of the shield segment;

[0017] S4. The oil cylinder pressurizes to push the segment gasket paste board to move towards the fixed segment gasket paste board, compressing the rubber gasket;

[0018] S5. Fix the two groups of segment gasket paste boards through the fastening bolts, adjust the tightness of the fastening bolts, and control the included angle between the two groups of segment gasket paste boards to be the same as the included angle between the two groups of shield segments;

[0019] S6. According to the shape of the shield segment bolt hole, put the sealing ring on the bent bolt hole / straight bolt hole of the segment gasket paste board, pass the bolt through the bolt hole, tighten the bolt with a pneumatic wrench, and seal the remaining bolt hole of the other shape at the bolt sleeve through the plugging piece;

[0020] S7. Plug the peripheral caulking according to the design requirements;

[0021] S8. Inject clean water through the water injection hole in the central area. When the exhaust hole steadily discharges water, plug the exhaust hole with a plug, and then continue to inject water and pressurize. The pressurization method is to pressurize step by step according to the waterproof test pressurization method of the rubber gasket for shield tunnel segments;

[0022] During the pressurization process, observe the pressure changes of the pressure gauges in different areas, observe the leakage conditions of the rubber gasket or the bent bolt hole / straight bolt hole, analyze the weak leakage links of the segment, and the water pressure resistance of the bolt hole seal.

[0023] Preferably, it further includes:

[0024] S9. Check the deformation and damage conditions of the sealing ring after compression, and analyze the durability of the bolt hole seal.

[0025] The present invention has at least the following beneficial effects:

[0026] (1) The device has a simple structure. By adjusting the size of the gasket paste board and the size of the bolt holes, it can conduct performance tests on straight bolts and inclined bolts of different sizes and specifications through simple tooling, with strong applicability.

[0027] (2) The device can truly simulate the working environment of the segment joint waterproof system, and can conduct tests on single and double - channel seal waterproof performance analysis, bolt hole waterproofing, and bolt hole sealing ring damage.

[0028] (3) The device can, through the constant - temperature circulating water device, alternately change the working temperature of the sealing ring and the surrounding water body to study the influence of seasonal changes on the waterproof performance of segment joints.

[0029] (4) The device can study the collaborative waterproofing ability of gaskets, bolt holes, and caulking joints, analyze the waterproof weak links of the entire segment joint, and improve the quality of tunnel waterproof construction design.

[0030] Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. Brief Description of the Drawings

[0031] Figure 1 is a schematic diagram of the performance test device for the waterproof system of the shield segment joint considering bolt holes of the present invention;

[0032] Figure 2 is a schematic diagram of double - channel segment waterproofing of the present invention;

[0033] Figure 3 is a schematic diagram of bolt waterproofing of the present invention;

[0034] Figure 4 is a schematic diagram of the setting of the chute part of the present invention;

[0035] Figure 5 is a rear view of the performance test device for the waterproof system of the shield segment joint considering bolt holes of the present invention.

[0036] Description of the reference numerals: 1 segment body; 2 outer - side waterproof gasket of the segment; 3 inner - side waterproof gasket of the segment; 4 inclined bolt nut hole of the segment; 5 inclined bolt; 6 sealing ring; 7 gasket paste board of the segment; 8 waterproof gasket; 9 thickened board; 10 straight bolt hole; 11 bent bolt hole; 12 oil cylinder; 13 reaction frame; 14 chute; 15 slider; 16 fastening bolt hole; 17 caulking groove; 18 chassis; 19 transverse adjustment bolt; 20 exhaust hole; 21 water injection hole; 22 pressure gauge; 23 longitudinal adjustment bolt, 24 chamfer; 25 gap; 26 circulation pipeline; 27 water inlet end of the circulation pipeline; 28 water outlet end of the circulation pipeline. Detailed Description of the Invention

[0037] The present invention will be described in detail and completely with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be particularly noted that: the technical solutions and technical features provided in each part including the following description of the present invention can be combined with each other without conflict.

[0038] In addition, the embodiments of the present invention involved in the following description are usually only some embodiments of the present invention, rather than all embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts should fall within the scope of protection of the present invention.

[0039] Currently, the specifications only make relevant regulations on the performance and test methods of the waterproof gaskets for segment joints, and do not make relevant regulations on the performance of the bolt hole waterproof system. Moreover, the current industry mainly focuses on the structural optimization of the bolt hole waterproof system and rarely conducts a complete set of tests on the performance of the waterproof system.

[0040] The following further describes the present invention in detail with reference to the accompanying drawings and embodiments, and the specific implementation process is as follows:

[0041] As Figures 1 to 5 shown, the present invention provides a performance test device for the waterproof system of a shield segment joint considering bolt holes, including:

[0042] A chassis 18;

[0043] Two groups of relatively arranged segment gasket pasting plates 7, one group of segment gasket pasting plates 7 is fixed on the chassis 18, and the other group of segment gasket pasting plates 7 is slidably arranged on the chassis 18. Three annular pasting grooves are arranged on the inner surfaces of the segment gasket pasting plates 7 facing each other from the inside to the outside. Rubber gaskets are detachably arranged in the pasting grooves. Bent bolt holes 11 and straight bolt holes 10 are provided on the segment gasket pasting plates 7 corresponding to the outer pasting groove and the middle pasting groove. A thickening plate 9 is arranged on the outer side of the segment gasket pasting plate 7. A plurality of bolt sleeves are arranged on the thickening plate 9. The bolt sleeves are coaxially communicated with the corresponding bent bolt holes 11 / straight bolt holes 10. 1-2 groups of fastening bolt holes 16 are arranged at the four corners of the segment gasket pasting plate 7. A sealing groove 17 is arranged around the inner surface of the segment gasket pasting plate 7;

[0044] A pair of sliding grooves 14 are symmetrically arranged on the chassis 18, respectively located on both sides of the bottom of another set of segment gasket pasting plates 7. The segment gasket pasting plates 7 are slidably connected to the sliding grooves 14 through sliders 15. The cross-section of the sliding grooves 14 is a convex-shaped groove. The slider 15 includes a convex-shaped connecting block and a longitudinal adjusting bolt 23. The connecting block is slidably connected to the sliding grooves 14. The size of the sliding grooves 14 is slightly larger than the size of the connecting block. The upper end of the connecting block is connected to the longitudinal adjusting bolt 23. An adjusting nut is arranged on the longitudinal adjusting bolt 23. The longitudinal adjusting bolt 23 penetrates into the bottom of the thickening plate 9. The height of the thickening plate 9 is adjusted by rotating the adjusting nut. On one side of the chassis 18 close to the fixed segment gasket pasting plate 7, transverse adjusting bolt 19 holes are symmetrically opened and transverse adjusting bolts 19 are installed. The transverse adjusting bolt 19 holes vertically penetrate the same-side sliding grooves 14. A reaction frame 13 is arranged on the frame body. The reaction frame 13 is fixed with an oil cylinder 12. The oil cylinder 12 is used to push the thickening plate 9 to move along the sliding groove 14;

[0045] An exhaust hole 20 and a water injection hole 21 are arranged at the central part of the fixed segment gasket pasting plate 7 and penetrate through the thickening plate 9. The fixed segment gasket pasting plate 7 is also provided with four groups of pressure gauges 22 to respectively detect the pressures in the four areas separated by the three annular pasting grooves of the segment gasket pasting plate 7.

[0046] The technical solution of the present invention may further include the following technical details to better achieve the technical effect: Preferably, the total thickness of the thickening plate 9 and the segment gasket pasting plate 7 does not exceed 20 cm.

[0047] The technical solution of the present invention may further include the following technical details to better achieve the technical effect: Chamfers 24 are arranged on the bent bolt holes 11 and the straight bolt holes 10, and sealing rings 6 are arranged at the chamfers 24.

[0048] The technical solution of the present invention may further include the following technical details to better achieve the technical effect: It further includes a high and low temperature integrated machine and a circulation pipeline 26. A clamping groove is arranged on the thickening plate 9. The circulation pipeline 26 is fixed on the clamping groove and is arranged between the segment gasket pasting plate 7 and the thickening plate 9. The circulation pipeline 26 is arranged in a serpentine shape. The water inlet end 27 of the circulation pipeline is connected to the water outlet joint of the high and low temperature integrated machine through a pipeline. The water outlet end 28 of the circulation pipeline is connected to the water inlet joint of the high and low temperature integrated machine through a pipeline. Valves are arranged on the pipelines to control the inlet and outlet of cold and hot water.

[0049] (1) By changing the circulating water temperature, the temperature of the water sealed in the segment gasket pasting plate 7 and the rubber gasket can be indirectly controlled, and the influence of seasonal changes on tunnel waterproofing can be simulated.

[0050] (2) A heat insulation layer is provided at the rear of the segment gasket pasting plate 7, which can reduce the temperature loss of the hot and cold pipes and ensure that the overall gasket is in a constant temperature environment.

[0051] The present invention also provides a test method for waterproofing of bolt holes by using the performance test device for the waterproof system of shield segment joints considering bolt holes, which is characterized by including the following steps:

[0052] S1. As shown in Figure 2 , according to the setting of the inner and outer gaskets of the segment body 1, the segment body 1 has a segment outer waterproof gasket 82, a segment inner waterproof gasket 83 and a nut hole 4 for the segment inclined bolt 5. There is a gap 25 between the bolt hole and the segment. Process the corresponding segment gasket pasting plate 7, and number the three annular pasting grooves provided on the segment gasket pasting plate 7 as 1, 2, and 3 from the outside to the inside;

[0053] S2. According to the actual situation of the shield segment rubber gasket, paste the corresponding two rubber gaskets in the pasting grooves, and simulate the two situations of inner and outer double seals and outer double seals by adjusting the positions of the rubber gaskets and the bent bolt holes 11 / straight bolt holes 10;

[0054] When simulating the inner and outer double seals of the shield segment, first paste the rubber gaskets 1, 2 or 1, 3;

[0055] When simulating the outer double gasket, paste the gaskets 2 and 3;

[0056] S3. Slide the segment gasket pasting plate 7, and according to the actual misalignment amount of the shield segment, adjust the position of the segment gasket pasting plate 7 through the transverse adjustment bolt 19 and the longitudinal adjustment bolt 23 until the misalignment amount between the two segment gasket pasting plates 7 corresponds to the actual misalignment amount of the shield segment;

[0057] S4. The oil cylinder pressurizes to push the segment gasket pasting plate 7 towards the fixed segment gasket pasting plate 7 to compress the rubber gasket;

[0058] S5. Fix the two groups of segment gasket pasting plates 7 through the fastening bolts, and adjust the tightness of the fastening bolts to control the included angle between the two groups of segment gasket pasting plates 7 to be consistent with the included angle between the two groups of shield segments;

[0059] S6. According to the shape of the shield segment bolt hole, put a sealing ring 6 on the bent bolt hole 11 / straight bolt hole 10 of the segment gasket pasting plate 7, insert the bolt into the bolt hole, and tighten the bolt with a pneumatic wrench. The remaining bolt hole of the other shape is blocked at the bolt sleeve through the blocking piece;

[0060] S7. Block the peripheral caulking according to the design requirements;

[0061] S8. Inject clean water through the water injection holes 21 in the central area. When water steadily flows out of the exhaust holes 20, plug the exhaust holes 20 with plugs, and then continue to inject water and pressurize. The pressurization method is the same as the waterproof test pressurization method for rubber gaskets used in shield tunnel segments, with step-by-step pressurization;

[0062] During the pressurization process, observe the pressure changes of the pressure gauges 22 in different areas, observe the leakage conditions of the rubber gaskets or the bent bolt holes 11 / straight bolt holes 10, analyze the weak links of the segment leakage, and the water pressure resistance of the bolt hole seals.

[0063] S9. Change the positional relationship of the gasket adhesive plates 7 of two segments, and repeat steps S1 - 8 to analyze the leakage laws of the rubber gaskets and bolt holes under different conditions, and optimize the entire sealing system according to the test conditions.

[0064] This technical solution may also include the following technical details to better achieve the technical effects: It also includes:

[0065] S9. Check the deformation and damage conditions of the sealing rings 6 after compression, and analyze the durability of the bolt hole seals.

[0066] In S6, the sealing ring 6 can also be obliquely placed at the chamfer 24 of the groove edge, and then the bolts are tightened to analyze the shear failure of the sealing ring 6 by the bolt hole chamfer 24 when the bolt holes are skewed.

[0067] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the embodiments shown and described here.

Claims

1. A test device for the performance of shield segment joint waterproof system considering bolt holes, It is characterized in that include: chassis; Two groups of segment sealing gasket pasting plates are arranged opposite to each other, one group of segment sealing gasket pasting plates is fixed on the bottom frame, and the other group of segment sealing gasket pasting plates is slidably arranged on the bottom frame, and the inner surfaces of the segment sealing gasket pasting plates opposite to each other are provided with three annular pasting grooves from the inside to the outside, and rubber sealing gaskets are detachably arranged in the pasting grooves, and bent bolt holes and straight bolt holes are provided on the segment sealing gasket pasting plates corresponding to the outer pasting grooves and the middle pasting grooves, and a thickened plate is provided on the outward side of the segment sealing gasket pasting plate, and a plurality of bolt sleeves are provided on the thickened plate, and the bolt sleeves are coaxially connected to the corresponding bent bolt holes / straight bolt holes, and 1~2 groups of fastening bolt holes are provided at the four corners of the segment sealing gasket pasting plate, and a circle of caulking grooves are provided around the inner surface of the segment sealing gasket pasting plate; The bottom frame is symmetrically provided with a pair of slide grooves, and the pipe segment sealing gasket pasting plate is slidably connected in the slide groove by a slider, and the slide groove cross-section is a convex groove, and the slider includes a convex connecting block and a longitudinal adjusting bolt, and the connecting block is slidably connected in the slide groove, and the size of the slide groove is slightly larger than the size of the connecting block, and the upper end of the connecting block is connected with the longitudinal adjusting bolt, and an adjusting nut is arranged on the longitudinal adjusting bolt, and the longitudinal adjusting bolt penetrates the bottom of the thickening plate, and transverse adjusting bolt holes are symmetrically opened on one side of the bottom frame close to the fixed pipe segment sealing gasket pasting plate and is equipped with transverse adjusting bolts, and the transverse adjusting bolt holes vertically pass through the slide grooves on the same side, and a reaction frame is arranged on the frame body, and an oil cylinder is fixed to the reaction frame, and the oil cylinder is used to push the thickening plate to move along the slide groove; The fixed segment sealing gasket pasting plate is provided with an exhaust hole and a water injection hole at the center thereof and penetrates the thickened plate. The fixed segment sealing gasket pasting plate is also provided with four sets of pressure gauges for respectively detecting the pressure of four areas formed by the segment sealing gasket pasting plate separated by three annular pasting grooves; A high and low temperature integrated machine and a circulation pipeline, a card slot is arranged on the thickened plate, the circulation pipeline is fixed on the card slot and arranged between the pipe segment sealing gasket pasting plate and the thickened plate, the circulation pipeline is bent in a snake shape, the water inlet end of the circulation pipeline is connected to the water outlet joint of the high and low temperature integrated machine through a pipeline, and the water outlet end of the circulation pipeline is connected to the water inlet joint of the high and low temperature integrated machine through a pipeline.

2. The shield segment joint waterproof system performance test device considering bolt holes as described in claim 1, It is characterized in that The bent bolt hole and the straight bolt hole are provided with chamfers, and sealing rings are provided at the chamfers.

3. A method for testing bolt hole waterproofness using the shield segment joint waterproof system performance test device considering bolt holes as described in any one of claims 1 to 2, It is characterized in that The following steps are involved: S1. Number the three annular sticking grooves on the segment sealing gasket sticking plate 1, 2, and 3 from outside to inside; S2. According to the actual situation of the rubber gasket for shield segments, paste the corresponding two rubber gaskets in the pasting groove, and simulate the two situations of double inner and outer seals and double outer seals by adjusting the positions of the rubber gasket and the bent bolt hole / straight bolt hole; When simulating the double inner and outer seals of the shield segment, first paste the rubber gaskets 1, 2 or 1, 3; When simulating the double outer gaskets, paste the gaskets 2 and 3; S3. Slide the segment gasket pasting plate, and according to the actual misalignment amount of the shield segment, adjust the position of the segment gasket pasting plate by the transverse adjusting bolt and the longitudinal adjusting bolt until the misalignment amount between the two segment gasket pasting plates corresponds to the actual misalignment amount of the shield segment; S4. The oil cylinder pressurizes to push the segment gasket pasting plate to move towards the fixed segment gasket pasting plate, compressing the rubber gasket; S5. Fix the two groups of segment gasket pasting plates by tightening the bolts, adjust the tightness of the tightening bolts, and control the included angle between the two groups of segment gasket pasting plates to be consistent with the included angle between the two groups of shield segments; S6. According to the shape of the bolt holes of the shield segment, put the sealing ring on the bent bolt hole / straight bolt hole of the segment gasket pasting plate, insert the bolt into the bolt hole, tighten the bolt with a pneumatic wrench, and plug the other remaining bolt hole of the other shape at the bolt sleeve with a plugging piece; S7. Plug the caulking around the perimeter according to the design requirements; S8. Inject clean water through the water injection hole in the central area. When the exhaust hole discharges water stably, plug the exhaust hole with a plug, and then continue to inject water and pressurize. The pressurization method is to pressurize step by step according to the waterproof test pressurization method of the rubber gasket for shield tunneling segments; During the pressurization process, observe the pressure change of the pressure gauges in different areas, observe the leakage situation of the rubber gasket or the bent bolt hole / straight bolt hole, analyze the weak leakage links of the segment, and the waterproof pressure resistance of the bolt hole seal.

4. The test method for bolt hole waterproofing using the performance test device for the waterproof system of shield segment joints considering bolt holes as described in claim 3, characterized in that, further comprising: S9. Check the deformation and damage of the sealing ring after compression, and analyze the durability of the bolt hole seal.

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