Shield tunnel embedded bolt hole high-strength GINA waterproof gasket and construction method

Abstract

The invention discloses a shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket and a construction method, and relates to the technical field of shield tunnel engineering.The shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket comprises a water stop gasket body, the water stop gasket body is to be installed on a segment pouring steel mold of a shield tunnel and comprises a first gasket body and a second gasket body, and the second gasket body is fixed to the middle of the top end of the first gasket body; through holes concentric with the first gasket and the second gasket are formed in the middle of the first gasket and the middle of the second gasket respectively, and the radial section of each through hole is round. According to the invention, through the special design of the first gasket and the second gasket of the waterstop gasket, even if the waterstop gasket is subjected to certain pressure in the concrete pouring process, the structural stability of the waterstop gasket is not affected, the sealing performance and the waterproof performance of the duct piece bolt hole are ensured, and the waterstop gasket is automatically installed by means of extrusion force generated in the splicing process, so that the waterstop gasket is convenient to install. The waterproof effect is reliably guaranteed, dependence on manual operation is greatly reduced, and therefore construction efficiency and reliability are improved.

Description

Technical Field

[0001] The invention relates to the technical field of shield tunnel engineering, and in particular to a shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket and a construction method. Background Art

[0002] As an important part of modern urban infrastructure, the continuous innovation of shield tunnel construction technology has promoted the development and utilization of underground space, but its long-term operation safety depends largely on excellent waterproof performance, especially the waterproof design of the joints of the pipe segments. While a large number of shield tunnels are being built, the hydrogeological conditions through which these tunnels pass are becoming increasingly complex, resulting in widespread water leakage in the project. A large number of joints and bolt holes have undoubtedly become potential channels for water leakage. Therefore, the waterproofing problem has become a major challenge restricting the further development of shield tunnels.

[0003] At present, the waterproof treatment of bolt holes mainly relies on manual operation and traditional methods, and waterproofing is usually achieved by installing waterproof gaskets. In some cases, waterproof devices are also placed in a prefabricated or pre-buried manner during the construction process. In addition, some scholars have proposed a scheme for waterproofing bolt holes using the sleeve method. Although these methods have their own characteristics, in general, traditional processes are still the main means of waterproofing.

[0004] However, the existing technical solutions for waterproofing the bolt holes of shield tunnel segments have the following problems: 1. The waterproof gasket has a complex structure and is difficult to construct. The existing bolt hole waterproof washers have a complex structure, which increases the difficulty of processing and installation. The on-site construction process becomes cumbersome and inefficient, and it is difficult to ensure the consistency of construction quality.

[0005] 2. Insufficient local strength increases the risk of injury Complex grooves and excessive structural details in the design of waterproof components will weaken the local strength of the bolt holes, making the segments vulnerable to damage, increasing the potential risks and maintenance costs of the structure.

[0006] 3. Relying on manual construction quality, prone to instability problems The installation process of traditional waterproof gaskets relies too much on manual operation, and the construction accuracy is difficult to guarantee. It is easy for human errors to lead to poor sealing effects, thereby increasing the risk of water leakage.

[0007] 4. Uneven distribution of contact force or extrusion force After assembly, the contact force or extrusion force of the waterproof gasket between the bolt and the seal is often unevenly distributed. Due to assembly deviation or misalignment, the circumferential contact force is prone to form weak points locally, thus causing leakage risks.

[0008] 5. Water-expanding materials have poor applicability and limited waterproof performance The water-swelling sealing materials that are widely used at present are prone to failure in high water pressure or continuous water flow environments. The problem of uneven expansion further limits their waterproof performance, making it difficult to meet long-term stable waterproofing needs.

[0009] These problems result in certain limitations in the practical application of existing waterproofing methods and devices, and therefore require further optimization and improvement.

[0010] In view of the above problems, a high-strength GINA waterproof gasket for pre-buried bolt holes in shield tunnels and a construction method were proposed. Summary of the invention

[0011] The object of the present invention is to provide a shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket and a construction method to solve the above problems.

[0012] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket and a construction method, comprising a water-stop gasket to be installed on a segment casting steel mold of a shield tunnel, the water-stop gasket comprising a first gasket and a second gasket, the second gasket being fixed to the middle of the top of the first gasket, the first gasket and the second gasket both having a through hole concentric therewith in the middle, and the radial section of the through hole is circular; The first gasket is an isosceles trapezoid that gradually shrinks toward the direction approaching the first gasket, and the second gasket is an isosceles trapezoid that gradually expands toward the direction approaching the first gasket.

[0013] As a preferred solution of the present invention, the connection between the top of the first gasket and the second gasket has two inclined surfaces that are inclined downward toward the outer edge and inner edge of the first gasket along the connection between the first gasket and the second gasket, and the two inclined surfaces are symmetrically arranged about the second gasket.

[0014] As a preferred solution of the present invention, the first gasket and the second gasket are both made of elastic EPDM rubber.

[0015] As a preferred solution of the present invention, the first gasket and the second gasket are integrally formed.

[0016] As a preferred solution of the present invention, the first gasket and the second gasket are both annular and concentrically arranged. As a preferred solution of the present invention, the inner diameters of the two through holes increase sequentially from bottom to top.

[0017] The present invention also provides a construction method for a shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket, the method comprising the following steps: S1. When manufacturing shield segments, the water stop gasket is first bonded to the shield tunnel segment casting steel mold using low-viscosity liquid glue; S2, then fully insert the core rod into the segment casting steel mold, and put the water stop washer on the core rod close to the segment casting steel mold; S3. A prefabricated space for the pipe segments is provided inside the steel mold for casting the pipe segments, and concrete is poured inside the prefabricated space for the pipe segments; S4, after the segment prefabrication space is poured with concrete and formed, the first segment or the second segment is formed, the core rod is pulled out from the segment casting steel mold, and the segment bolt hole is formed, and the water stop gasket is embedded and fixed at the position corresponding to the segment bolt hole on the first segment or the second segment through the bottom of the first gasket; S5, assembling the first pipe segment and the second pipe segment. After the first pipe segment and the second pipe segment are assembled, insert the pipe segment connecting bolts into the pipe segment bolt holes reserved in the first pipe segment and the second pipe segment and tighten them.

[0018] As a preferred embodiment of the present invention, in step S1, a waterstop gasket groove having the same outer contour as the waterstop gasket is provided on the pipe segment casting steel mold, the waterstop gasket is bonded in the waterstop gasket groove, and the low-viscosity liquid glue is a single-component chloroprene-phenolic adhesive.

[0019] As a preferred solution of the present invention, in step S5, when the first pipe segment and the second pipe segment are assembled, an outer sealing gasket and an inner sealing gasket are arranged between the first pipe segment and the second pipe segment, and the outer sealing gasket and the inner sealing gasket are respectively located on both sides of the outer periphery of the water stop gasket.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the special design of the first washer and the second washer of the water-stop gasket will not affect the structural stability even if the water-stop gasket is subjected to a certain pressure during the concrete pouring process, thereby ensuring the sealing and waterproof performance of the segment bolt hole. In addition, the incremental inner diameter design of the through hole helps the water-stop gasket to better fit the surface of the segment connection bolt when the segment connection bolt is tightened, thereby enhancing the sealing effect and preventing the intrusion of water and impurities. The water-stop gasket of the present invention has the advantages of simple structure, low processing difficulty and low production cost.

[0021] 2. In the present invention, during the assembly stage of the first pipe segment and the second pipe segment, the water-stop gasket is automatically installed with the help of the extrusion force generated during the assembly process, ensuring the excellent waterproof performance and avoiding the problem of unstable construction quality that may be caused by relying on manual installation of bolts in the traditional sealing method. Through this process, not only the waterproof effect is reliably guaranteed, but also the dependence on manual operation is greatly reduced, thereby improving construction efficiency and reliability. The construction method of the present invention not only simplifies the construction process and reduces the requirements for the skills of construction personnel, but also improves the construction efficiency and quality through the embedded design, ensuring the long-term stability and waterproof performance of the shield tunnel. In addition, in view of the problem of increased costs due to complex structural design in traditional solutions, this method does not require any changes to the bolt structure. The simplified design and construction process not only improves the economic benefits, but also reduces the implementation cost, and has significant promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] Figure 1 The present invention provides a schematic diagram of the overall structure of a high-strength GINA waterproof gasket for pre-buried bolt holes in a shield tunnel; Figure 2 The present invention provides a schematic cross-sectional structure diagram of a high-strength GINA waterproof gasket for a pre-buried bolt hole in a shield tunnel; Figure 3 A front structural cross-sectional view of a high-strength GINA waterproof gasket for a pre-buried bolt hole in a shield tunnel is provided for the present invention; Figure 4 The present invention provides a schematic diagram of pre-embedded installation of high-strength GINA waterproof gaskets for pre-embedded bolt holes in shield tunnels; Figure 5 The present invention provides an assembly cross-sectional view of a high-strength GINA waterproof gasket for a shield tunnel pre-embedded bolt hole; Figure 6 A front view of the bolt holes of the pipe segment is provided for the present invention.

[0024] The numbers in the figure represent the following: 1. Water-stop gasket; 2. Segment casting steel mold; 3. Mandrel; 4. Segment prefabrication space; 5. Segment bolt hole; 6. First segment; 7. Second segment; 8. Outer sealing gasket; 9. Inner sealing gasket; 10. Segment connection bolts; 101, second gasket; 102, first gasket; 103, through hole; 104, inclined surface; 201, water-stop gasket groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1 - Figure 6 As shown, the present invention provides a shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket and a construction method, comprising a water-stop gasket 1, the water-stop gasket 1 is to be installed on a segment casting steel mold 2 of a shield tunnel, the water-stop gasket 1 comprises a first gasket 102 and a second gasket 101, the second gasket 101 is fixed to the middle of the top of the first gasket 102, the first gasket 102 and the second gasket 101 are both annular and concentrically arranged, the middle of the first gasket 102 and the second gasket 101 are both provided with a through hole 103 concentric with the two, and the radial section of the through hole 103 is circular; During installation, the water-stop gasket 1 is embedded in a designated position between the adjacent first pipe segment 6 and the second pipe segment 7. During the assembly process of the first pipe segment 6 and the second pipe segment 7, the water-stop gasket 1 is compressed to prevent water leakage from the pipe segment bolt hole 5. The provision of the first gasket 102 and the second gasket 101 improves the sealing performance of the pipe segment bolt hole 5 and can effectively prevent water penetration.

[0027] The first gasket 102 is an isosceles trapezoid that gradually shrinks toward the first gasket 102, and the second gasket 101 is an isosceles trapezoid that gradually expands toward the first gasket 102. The first gasket 102 and the second gasket 101 are integrally formed. The isosceles trapezoid and integrally formed design provide better structural stability and can withstand greater pressure without deformation.

[0028] The connection between the top of the first gasket 102 and the second gasket 101 has two inclined surfaces 104 that are inclined downward toward the outer edge and the inner edge of the first gasket 102 along the connection between the first gasket 102 and the second gasket 101, and the two inclined surfaces 104 are symmetrically arranged about the second gasket 101.

[0029] The first gasket 102 and the second gasket 101 are both made of elastic EPDM. The use of elastic EPDM as a material allows the gasket to maintain performance in various environments due to its aging resistance, weather resistance and heat resistance.

[0030] The inner diameters of the two through holes 103 increase from bottom to top.

[0031] The water-stop gasket 1 of the present invention is pre-buried between the first tube segment 6 and the second tube segment 7, which facilitates the assembly construction of the first tube segment 6 and the second tube segment 7, and the waterproof performance is less affected by the deformation of the joint between the first tube segment 6 and the second tube segment 7. The arrangement of the first gasket 102 and the second gasket 101 makes it easier to compress the water-stop gasket 1 when the first tube segment 6 and the second tube segment 7 are assembled, and the first gasket 102 and the second gasket 101 are part of the cross section of the water-stop gasket 1, which facilitates the assembly of the first tube segment 6 and the second tube segment 7 while ensuring the waterproof effect.

[0032] The inner diameter design of the through hole 103 ensures that when the segment connection bolt 10 passes through, a good sealing effect can be formed between the water stop gasket 1 and the segment connection bolt 10, while allowing a certain installation error, thereby improving the convenience of construction. In addition, the design of the through hole 103 helps the water stop gasket 1 to better fit the surface of the segment connection bolt 10 when the segment connection bolt 10 is tightened, thereby enhancing the sealing effect and preventing the intrusion of water and impurities. The water stop gasket 1 of the present invention has the advantages of simple structure, low processing difficulty and low production cost.

[0033] A construction method for a shield tunnel pre-buried bolt hole high-strength GINA waterproof gasket comprises the following steps: S1. When manufacturing shield segments, firstly, the water stop gasket 1 is bonded to the segment casting steel mold 2 of the shield tunnel by low-viscosity liquid glue; S2, then completely insert the core rod 3 into the segment casting steel mold 2, and put the water stop washer 1 on the core rod 3 close to the side of the segment casting steel mold 2; S3, a segment prefabrication space 4 is provided inside the segment casting steel mold 2, and concrete is poured inside the segment prefabrication space 4; S4, after the segment prefabricated space 4 is poured with concrete and formed, the first segment 6 or the second segment 7 is formed, the core rod 3 is pulled out from the segment casting steel mold 2, and the segment bolt hole 5 is formed, and the water stop gasket 1 is embedded and fixed at the position corresponding to the segment bolt hole 5 on the first segment 6 or the second segment 7 through the bottom of the first gasket 102; S5. Assemble the first pipe segment 6 and the second pipe segment 7. After the first pipe segment 6 and the second pipe segment 7 are assembled, insert the pipe segment connecting bolts 10 through the pipe segment bolt holes 5 reserved in the first pipe segment 6 and the second pipe segment 7 and tighten them to ensure the firmness and overall stability of the adjacent pipe segment structure.

[0034] In terms of construction method, the construction steps of the present invention include: placing the water-stop gasket 1 at a predetermined position on the pipe segment casting steel mold 2, then pouring concrete, and after the concrete hardens, the pipe segment connecting bolts 10 pass through the through holes 103 of the water-stop gasket 1 and are tightened.

[0035] Furthermore, in step S5, when the first pipe segment 6 and the second pipe segment 7 are assembled, an outer sealing gasket 8 and an inner sealing gasket 9 are arranged between the first pipe segment 6 and the second pipe segment 7, and the outer sealing gasket 8 and the inner sealing gasket 9 are respectively located on both sides of the outer periphery of the water-stop gasket 1. When the groundwater flow breaks through the outer sealing gasket 8, the first pipe segment 6 and the second pipe segment 7 prevent the water flow from penetrating into the pipe segment bolt hole 5 by squeezing the water-stop gasket 1. Due to the special design of the water-stop gasket 1, even if the water-stop gasket 1 is subjected to a certain pressure during the concrete pouring process, its structural stability will not be affected, thereby ensuring the sealing and waterproof performance of the pipe segment bolt hole 5. Among them, the inner sealing gasket 9 enhances and protects the waterproof performance of the outer sealing gasket 8; it is worth noting that when the outer sealing gasket 8 is broken through by water, the water will face two leakage paths, namely the segment bolt hole 5 and the inner sealing gasket 9. If the water leaks into the tunnel from the segment bolt hole 5, the inner sealing gasket 9 will not be able to function. Therefore, the water-stop gasket 1 in the present invention can also prevent water from leaking from the segment bolt hole 5, making the inner sealing gasket 9 unable to function.

[0036] In the production process of the pipe segment, the core rod 3 is a prior art and is used to reserve the position of the pipe segment bolt hole 5. When the concrete is poured, the core rod 3 occupies a certain space and finally forms a standard pipe segment bolt hole 5. During construction, the water stop gasket 1 is put on the core rod 3 and fixed on the core rod 3 near the position of the pipe segment casting steel mold 2. As the first pipe segment 6 or the second pipe segment 7 is formed after the concrete is poured, the water stop gasket 1 is firmly embedded in the first pipe segment 6 or the second pipe segment 7 during the forming process and corresponds to the pipe segment bolt hole 5, ensuring a tight fit between the water stop gasket 1 and the pipe segment bolt hole 5.

[0037] Furthermore, during the assembly stage of the first pipe segment 6 and the second pipe segment 7, the water-stop gasket 1 is automatically installed with the help of the extrusion force generated during the assembly process, ensuring the excellent waterproof performance and avoiding the problem of unstable construction quality that may be caused by relying on manual installation of bolts in the traditional sealing method. Through this process, not only the waterproof effect is reliably guaranteed, but also the dependence on manual operation is greatly reduced, thereby improving construction efficiency and reliability. The construction method of the present invention not only simplifies the construction process and reduces the requirements for the skills of construction personnel, but also improves the construction efficiency and quality through the embedded design, ensuring the long-term stability and waterproof performance of the shield tunnel. In addition, in view of the problem of increased costs due to complex structural design of traditional solutions, this method does not require any changes to the bolt structure. The simplified design and construction process not only improves the economic benefits, but also reduces the implementation cost, and has significant promotion value.

[0038] In step S1, a water-stop gasket groove 201 having the same outer contour as the water-stop gasket 1 is provided on the segment casting steel mold 2, and the water-stop gasket 1 is bonded in the water-stop gasket groove 201, and the low-viscosity liquid glue is a single-component chloroprene-phenolic adhesive. Before applying the chloroprene-phenolic adhesive, it is necessary to ensure that the surface of the first segment 6 is dry. When applying, the chloroprene-phenolic adhesive should be evenly applied, and it should be ensured that the water-stop gasket groove 201 is completely covered by the chloroprene-phenolic adhesive. After applying, it is necessary to let it air for a period of time (usually 10 to 15 minutes, the specific time depends on the temperature and humidity), and when the chloroprene-phenolic adhesive is not sticky to the touch, the water-stop gasket 1 is embedded in the water-stop gasket groove 201. Within 12 hours after the water-stop gasket 1 is pasted, the first segment 6 shall not be sent into the well for assembly, and it shall be avoided from contact with moisture. After the glue is completely solidified, the first segment 6 and the second segment 7 are assembled. The water-stop gasket 1 is embedded in the first pipe segment 6, and the chloroprene phenolic adhesive has good adhesive properties, can quickly bond various materials, and has good weather resistance and high connection strength, which can ensure that there will be no falling off and other problems under high water pressure.

[0039] Through the above structure and its construction method, it can be seen that the advantage of this method lies in its simplicity and efficiency, which ensures that the embedded construction of the water-stop gasket 1 can be completed smoothly without affecting the overall production process of the first pipe segment 6 and the second pipe segment 7. Since the water-stop gasket 1 is installed before the first pipe segment 6 and the second pipe segment 7 are formed, and the core rod 3, a ready-made support, is used, the entire construction process is very simple and does not require additional installation steps, saving a lot of construction time and labor costs. At the same time, since the position of the water-stop gasket 1 is fixed during the production process and is not affected by later construction, its stability and reliability are guaranteed. This embedded construction method not only improves work efficiency, but also ensures the precise position of the water-stop gasket 1, thereby providing a good foundation for the subsequent installation of the pipe segment connecting bolts 10. In general, compared with other existing processes, this method has the following advantages: 1. Simple structure, low processing difficulty, low production cost, and pre-buried construction is easy to ensure quality In view of the problems of complex structure and difficult construction of existing bolt hole waterproofing technical solutions, this method simplifies the waterproofing structure design, reduces the processing difficulty and production cost. Its pre-buried construction method is more convenient, which can effectively reduce the complexity of on-site construction and ensure the stability of construction quality.

[0040] 2. Does not weaken the structure of the segment bolt hole 5, and does not affect the stress and deformation of the segment connecting bolts 10 Unlike the situation in which the local strength of the traditional waterproof assembly is weakened due to the complex groove design, this method can avoid weakening the structural strength of the segment bolt hole 5. The segment bolt hole 5 remains stable in terms of force and deformation, which helps to enhance the reliability of the overall structure.

[0041] 3. Pre-buried installation is firm and has strong resistance to high water pressure Compared with the traditional method that relies on the quality of manual construction and is prone to instability problems, this method adopts embedded installation to tightly combine the water-stop gasket 1 with the structure of the first pipe segment 6 and the second pipe segment 7, which significantly improves the firmness and can remain stable in a high water pressure environment, and is not prone to falling off and leakage.

[0042] 4. Reasonable installation position, high degree of automation, avoiding manual errors In order to solve the problem that traditional waterproof gaskets rely on manual operation and lead to unstable construction quality, this method sets the water-stop gasket 1 at the joint position of the first pipe segment 6 and the second pipe segment 7 to achieve automatic installation synchronously with the assembly of the first pipe segment 6 and the second pipe segment 7, effectively avoiding the hidden dangers of water leakage caused by human errors and significantly improving the automation level and consistency of construction.

[0043] 5. Less impact of misalignment and deformation, maintaining high waterproof capability In traditional technology, there is a high risk of leakage due to uneven contact force distribution caused by assembly deviation or misalignment. The design of this method takes into account the influence of misalignment and deformation. By optimizing the structure of the water-stop gasket 1, even if the bolt hole 5 of the pipe segment is partially damaged, it can still maintain excellent waterproof ability and reduce weak links.

[0044] 6. Avoid the limitation of rubber swelling when exposed to water, and the waterproof performance is more reliable In view of the problem that the current water-expandable sealing materials are prone to failure under water pressure, this method abandons traditional materials and provides more reliable waterproof performance by adopting high-strength GINA water-stop gasket 1. Its structural stability is strong and it can maintain excellent waterproof effect for a long time under high water pressure environment.

[0045] 7. High economic benefits, no need to change the structure of the segment connection bolts 10 The protection scope of the application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the application within the essence and protection scope of the application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the application.

Claims

1. A high-strength GINA waterproof gasket for embedded bolt holes in a shield tunnel, comprising a water-stop gasket (1), wherein the water-stop gasket (1) is to be installed on a segment casting steel mold (2) of a shield tunnel, and is characterized in that: The water-stop gasket (1) comprises a first gasket (102) and a second gasket (101), wherein the second gasket (101) is fixed to the middle of the top end of the first gasket (102), and the middle of the first gasket (102) and the second gasket (101) are both provided with a through hole (103) concentric therewith, and the radial cross section of the through hole (103) is circular; The first gasket (102) is an isosceles trapezoid that gradually shrinks in a direction approaching the first gasket (102), and the second gasket (101) is an isosceles trapezoid that gradually expands in a direction approaching the first gasket (102).

2. A shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket according to claim 1, characterized in that: The connection between the top of the first gasket (102) and the second gasket (101) comprises two inclined surfaces (104) which are inclined downwards towards the outer edge and the inner edge of the first gasket (102) respectively along the connection between the first gasket (102) and the second gasket (101), and the two inclined surfaces (104) are symmetrically arranged with respect to the second gasket (101).

3. A shield tunnel pre-buried bolt hole high-strength GINA waterproof gasket according to claim 1, characterized in that: The first gasket (102) and the second gasket (101) are both made of elastic ethylene propylene diene monomer rubber (EPDM).

4. A shield tunnel pre-buried bolt hole high-strength GINA waterproof gasket according to claim 1, characterized in that: The first gasket (102) and the second gasket (101) are integrally formed.

5. The shield tunnel pre-buried bolt hole high-strength GINA waterproof gasket according to claim 1, characterized in that: The first gasket (102) and the second gasket (101) are both annular and are concentrically arranged.

6. A shield tunnel pre-buried bolt hole high-strength GINA waterproof gasket according to claim 1, characterized in that: The inner diameter lengths of the two through holes (103) increase sequentially from bottom to top.

7. A construction method for a shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket as claimed in any one of claims 1 to 6, characterized in that: The method comprises the following steps: S1. When manufacturing shield segments, firstly, a water stop gasket (1) is bonded to a segment casting steel mold (2) of a shield tunnel by using a low-viscosity liquid glue; S2, then completely inserting the core rod (3) into the segment casting steel mold (2), and sleeve the water stop gasket (1) on the core rod (3) close to the segment casting steel mold (2); S3, a segment prefabrication space (4) is provided inside the segment casting steel mold (2), and concrete is poured inside the segment prefabrication space (4); S4, after the segment prefabrication space (4) is poured with concrete and formed, a first segment (6) or a second segment (7) is formed, the core rod (3) is pulled out from the segment casting steel mold (2), and a segment bolt hole (5) is formed, and the water stop gasket (1) is embedded through the bottom of the first gasket (102) at a position on the first segment (6) or the second segment (7) corresponding to the segment bolt hole (5); S5, assembling the first pipe segment (6) and the second pipe segment (7), after the first pipe segment (6) and the second pipe segment (7) are assembled, inserting pipe segment connecting bolts (10) from the pipe segment bolt holes (5) reserved in the first pipe segment (6) and the second pipe segment (7) and tightening them.

8. The construction method of a shield tunnel pre-embedded bolt hole high-strength GINA waterproof gasket according to claim 7, characterized in that: In the step S1, a water-stop gasket groove (201) having the same outer contour as the water-stop gasket (1) is provided on the pipe segment casting steel mold (2), the water-stop gasket (1) is bonded into the water-stop gasket groove (201), and the low-viscosity liquid glue is a single-component chloroprene-phenolic adhesive.

9. The construction method of a shield tunnel pre-buried bolt hole high-strength GINA waterproof gasket according to claim 7, characterized in that: In the step S5, when the first pipe segment (6) and the second pipe segment (7) are assembled, an outer sealing gasket (8) and an inner sealing gasket (9) are arranged between the first pipe segment (6) and the second pipe segment (7), and the outer sealing gasket (8) and the inner sealing gasket (9) are respectively located on both sides of the outer periphery of the water stop gasket (1).

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