Split type waterproof sleeve for tunnel construction

Abstract

This utility model discloses a split-type through-wall waterproof sleeve for tunnel construction, characterized by comprising: a primary support sleeve, a secondary lining sleeve, a primary support water-stop ring, a secondary lining water-stop ring, an annular waterproof plate, fixing bolts, and fixing nuts; the primary support water-stop ring and the secondary lining water-stop ring are respectively sealed around the openings where the inner and outer sleeves connect; fixing holes are provided on the annular waterproof plate, the secondary lining water-stop ring, and the primary support water-stop ring; the fixing bolts pass sequentially through the fixing holes on the primary support water-stop ring, the annular waterproof plate, and the secondary lining water-stop ring and are connected to the fixing nuts, thereby sealing the annular waterproof plate between the primary support water-stop ring and the secondary lining water-stop ring. This utility model adopts a split structure, which can be embedded and connected separately in the primary support stage and the secondary lining stage, and the length is adjustable, solving the problems of easy damage to the sleeve and easy water leakage around the sleeve in the prior art during construction.

Description

Technical Field

[0001] This utility model belongs to the field of waterproof construction technology for mined tunnels, specifically relating to a split-type through-wall waterproof sleeve for tunnel construction. Background Technology

[0002] During tunnel construction, it is unavoidable to encounter situations of concentrated, localized water seepage. When leakage occurs, whether it is through-wall pipes for drainage or grouting to seal pre-existing pipes, it is necessary to install through-wall pipes. By installing through-wall pipes that penetrate the tunnel's initial support and secondary lining, the seepage water from the surrounding rock can be directly diverted to the tunnel drainage ditch or directly grouted to seal the cracks in the surrounding rock. However, the commonly available waterproof sleeves are integral structures, with the pipe body and the water-stop ring welded together. If they are installed in one go during the initial support stage, the pipe body protrudes significantly from the initial support surface, making it prone to damage during tunnel excavation. If they are installed by drilling holes before the secondary lining construction, there will be gaps between the waterproof sleeve and the initial support surface that are difficult to seal. Furthermore, the sleeve needs to pierce the secondary lining waterproof membrane, which will also make it difficult to seal the gaps between the waterproof membrane and the sleeve, thus making it easy for water to seep around the sleeve and cause leakage. Utility Model Content

[0003] To address the problems existing in the prior art, the purpose of this utility model is to provide a split-type through-wall waterproof sleeve for tunnel construction. By adopting a split structure, it can be buried and connected separately in the initial support stage and the secondary lining stage, and its length can be adjusted. This solves the problems of easy damage to the sleeve and easy water leakage around the sleeve during the construction of the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A split-type through-wall waterproof sleeve for tunnel construction, characterized in that it includes: a primary support sleeve, a secondary lining sleeve, a primary support water-stop ring, a secondary lining water-stop ring, an annular waterproof plate, fixing bolts, and fixing nuts.

[0006] The primary support water-stop ring and the secondary lining water-stop ring are respectively sealed around the outside of the pipe opening where the inner sleeve and outer sleeve are connected; the annular waterproof plate, the secondary lining water-stop ring and the primary support water-stop ring are provided with fixing holes; the fixing bolts pass through the fixing holes on the primary support water-stop ring, the annular waterproof plate and the secondary lining water-stop ring in sequence and are connected to the fixing nuts, so that the annular waterproof plate is sealed between the primary support water-stop ring and the secondary lining water-stop ring.

[0007] Both the primary support sleeve and the secondary lining sleeve include a telescopic tube, an outer sleeve, and an inner sleeve; the inner sleeve is slidably inserted into one end of the outer sleeve; the length of the telescopic tube is telescopic, and one end of the telescopic tube is sealed to the inner wall of the inner sleeve, while the other end is sealed to the insertion end of the outer sleeve.

[0008] Preferably, the present invention also includes a sealing ring, which is sealed and filled between the annular waterproof plate and the secondary lining waterstop ring and the primary support waterstop ring.

[0009] Preferably, the two sides of the secondary lining waterstop ring and the primary support waterstop ring that are close to each other are provided with annular sealing grooves, and the sealing rings are nested in the annular sealing grooves.

[0010] Preferably, a threaded hole is provided through the wall of the insertion end of the outer sleeve and the inner sleeve, and a positioning bolt is threaded into the threaded hole.

[0011] Preferably, the telescopic tube is a rubber corrugated pipe, and the inner sleeve and outer sleeve are both seamless steel pipes.

[0012] Preferably, the primary support water-stop ring and the secondary lining water-stop ring are made of steel plate, and the primary support water-stop ring and the secondary lining water-stop ring are respectively sealed and welded to the outside of the inner sleeve of the primary support sleeve and the secondary lining sleeve.

[0013] The beneficial effects of this utility model are as follows: This utility model allows for two-stage installation and connection at the tunnel construction site. During the spraying of initial support concrete and the pouring of secondary lining concrete, it ensures a tight bond between the initial support sleeve and the initial support concrete, as well as between the secondary lining sleeve and the secondary lining concrete. This prevents water seepage around the sleeve and subsequent leakage. Furthermore, the annular waterproof membrane can be connected to the secondary lining waterproof membrane to ensure a sealed secondary lining waterproof system. In addition, the length of the initial support sleeve or secondary lining sleeve in this utility model can be flexibly adjusted, thus better matching the tunnel's construction parameters. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is the front view of the present invention;

[0016] Figure 3 This is the left view of the present invention;

[0017] Figure 4 This is a three-dimensional structural diagram of the present invention during installation;

[0018] Figure 5 This is a diagram showing the state of the present invention in use;

[0019] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0020] The meanings of the markings in the above figures are as follows: 1. Initial support sleeve; 2. Initial support waterstop ring; 3. Secondary lining sleeve; 4. Secondary lining waterstop ring; 5. Annular waterproof membrane; 6. Tunnel; 7. Fixing bolt; 8. Fixing hole; 9. Fixing nut; 10. Outer sleeve; 11. Inner sleeve; 12. Expansion tube; 13. Sealing ring; 14. Annular sealing groove; 15. Positioning bolt; 16. Initial tunnel support; 17. Secondary tunnel lining; 18. Secondary lining waterproof membrane; 19. Initial support concrete; 20. Secondary lining concrete. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the following embodiments are merely illustrative examples of the present invention, but the scope of protection of the present invention is not limited thereto. The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1

[0023] This embodiment provides a split-type through-wall waterproof sleeve for tunnel construction. Please refer to [link / reference]. Figures 1 to 4 It includes: primary support sleeve 1, secondary lining sleeve 3, primary support waterstop ring 2, secondary lining waterstop ring 4, annular waterproof plate 5, fixing bolt 7 and fixing nut 9.

[0024] The initial support water-stop ring 2 and the secondary lining water-stop ring 4 are respectively sealed around the outside of the pipe opening where the inner sleeve 1 and the outer sleeve 3 are connected; the annular waterproof plate 5, the secondary lining water-stop ring 4 and the initial support water-stop ring 2 are provided with fixing holes 8; the fixing bolts 7 pass through the fixing holes 8 on the initial support water-stop ring 2, the annular waterproof plate 5 and the secondary lining water-stop ring 4 in sequence and are connected to the fixing nuts 9, so that the annular waterproof plate 5 is sealed between the initial support water-stop ring 2 and the secondary lining water-stop ring 4.

[0025] Both the primary support sleeve 1 and the secondary lining sleeve 3 include a telescopic tube 12, an outer sleeve 10, and an inner sleeve 11; the inner sleeve 11 is freely slidably inserted into one end of the outer sleeve 10; the length of the telescopic tube 12 is telescopic, and one end of it is sealed to the inner wall of the inner sleeve 11, and the other end is sealed to the insertion end of the outer sleeve 10.

[0026] Based on the above structure, the waterproof sleeve of this utility model includes an independent primary support sleeve 1 and a secondary lining sleeve 3. The primary support sleeve 1 and the secondary lining sleeve 3 can be sealed by using the fixing holes 8 opened on the primary support waterstop ring 2, the annular waterproof plate 5, and the secondary lining waterstop ring 4, and by using fixing bolts 7 and fixing nuts 9. This allows the waterproof sleeve of this utility model to be buried separately during the construction of the tunnel initial support 16 and the tunnel secondary lining 17. In this way, when spraying the primary support concrete 19 and pouring the secondary lining concrete 20, it can be ensured that the primary support sleeve 1 and the primary support concrete, as well as the secondary lining sleeve 3 and the secondary lining concrete, are tightly bonded, thereby preventing water seepage around the sleeve and causing leakage. In addition, the annular waterproof plate 5 can also be connected to the secondary lining waterproof plate to ensure the sealing of the secondary lining waterproof system.

[0027] In addition, in this utility model, both the primary support sleeve 1 and the secondary lining sleeve 3 include a telescopic pipe 12, an outer sleeve 10, and an inner sleeve 11. The telescopic pipe 12 is connected between the inner sleeve 11 and the outer sleeve 10. It will not affect the sliding of the inner sleeve 11 in the outer sleeve 10, but can ensure the sealed connection between the outer sleeve 10 and the inner sleeve. When it is necessary to adjust the length of the primary support sleeve 1 or the secondary lining sleeve 3 to suit the tunnel construction parameters, the length of the inner sleeve 11 inserted into the outer sleeve 10 can be adjusted to control the length of the primary support sleeve 1 and the secondary lining sleeve 3 to meet the construction requirements of the tunnel initial support 16 and the tunnel secondary lining 17, respectively.

[0028] To ensure the sealing of the connection between the primary support waterstop ring 2, the annular waterproofing plate 5, and the secondary lining waterstop ring 4, in a preferred embodiment, the present invention further includes a sealing ring 13, which seals and fills the space between the annular waterproofing plate 5, the secondary lining waterstop ring 4, and the primary support waterstop ring 2; specifically, the sealing ring 13 is made of corrosion-resistant rubber.

[0029] To facilitate the installation and positioning of the sealing ring 13, in a preferred embodiment, both the secondary lining waterstop ring 4 and the primary support waterstop ring 2 have annular sealing grooves 14 on their abutting sides, and the sealing ring 13 is nested in the annular sealing groove 14; the thickness of the sealing ring 13 is greater than the groove depth of the annular sealing groove 14.

[0030] Furthermore, in a preferred embodiment, a threaded hole is provided through the wall of the insertion end of the outer sleeve 10 and the inner sleeve 1, and a positioning bolt 15 is threaded into the threaded hole; based on this setting, after adjusting the length of the inner sleeve 11 inserted into the outer sleeve 10, the positioning bolt 15 can be rotated to make the positioning bolt 15 press against the outer wall of the inner sleeve 1, so as to prevent the inner sleeve 11 or the outer sleeve 10 from being displaced relative to each other by external force.

[0031] Furthermore, in a preferred embodiment, the telescopic tube 12 is a rubber corrugated pipe, and the inner sleeve 1 and the outer sleeve 3 are both seamless steel pipes.

[0032] Furthermore, in a preferred embodiment, the primary support water-stop ring 2 and the secondary lining water-stop ring 4 are made of steel plates, and the primary support water-stop ring 2 and the secondary lining water-stop ring 4 are respectively sealed and welded to the outside of the inner sleeve 1 of the primary support sleeve 1 and the secondary lining sleeve 3.

[0033] Example 2

[0034] This embodiment provides the installation method of the waterproof sleeve in Embodiment 1. Please refer to [link / reference]. Figures 4 to 6 The details are as follows:

[0035] S1. Before the initial support construction, the initial support sleeve 1 and the initial support water-stop ring 2, and the secondary lining sleeve 3 and the secondary lining water-stop ring 4 are sealed and welded into an integral structure.

[0036] S2. During the initial support construction, the initial support sleeve 1 can be pre-embedded at the designed location. Then, the length of the inner sleeve 11 inserted into the outer sleeve 10 is adjusted and fixed by the positioning bolt 15 so that the length of the initial support sleeve 1 meets the design thickness requirements of the tunnel initial support 16. After that, the initial support sleeve 1 is welded and fixed to the steel arch frame and steel mesh in the tunnel initial support 16, and the fixing bolt 7 is pre-inserted into the fixing hole of the initial support waterstop ring 2 with the fixing bolt facing outward. After completing the above operations, the pipe opening of the initial support sleeve 1, the outer surface of the initial support waterstop ring 2 and the fixing bolt 7 are wrapped and protected, and then the initial support concrete is sprayed.

[0037] Before the construction of S3 and the secondary lining of the tunnel 17, a sealing ring 13 is installed in the annular sealing groove 14 of the initial support water-stop ring 2 and the secondary lining water-stop ring 4. Then, the fixing bolts 7 are inserted into the fixing holes 8 of the annular waterproof plate 5 and the secondary lining water-stop ring 4 in sequence. The fixing nuts 9 are connected to the fixing bolts 7. By tightening the fixing nuts 9, the sealing ring 13 is sealed and filled in the gap between the annular waterproof plate and the initial support water-stop ring 2 and the secondary lining water-stop ring 4. At this time, the initial support sleeve 1 and the secondary lining sleeve 3 are connected to form an internally connected integral structure.

[0038] S4. When constructing the secondary lining waterproofing membrane 18 in the secondary lining 17 of the tunnel, the secondary lining waterproofing membrane 18 is sealed and connected to the annular waterproofing membrane 5 to ensure the sealing of the secondary lining waterproofing system. Before the secondary lining is poured, the length of the inner sleeve 11 inserted into the outer sleeve 10 is adjusted and fixed by the positioning bolt 15 so that the length of the secondary lining sleeve 3 meets the design thickness requirements of the secondary lining 17 of the tunnel, so as to avoid the secondary lining sleeve 3 being too long or too short. The secondary lining sleeve 3 is welded and fixed to the secondary lining reinforcement. The opening of the secondary lining sleeve 3 is wrapped and protected. Then the secondary lining concrete 19 is poured, thus completing the installation of the entire waterproofing sleeve.

Claims

1. A split-type through-wall waterproof sleeve for tunnel construction, characterized in that, include: Primary support sleeve, secondary lining sleeve, primary support waterstop ring, secondary lining waterstop ring, annular waterproof membrane, fixing bolts and fixing nuts; The primary support water-stop ring and the secondary lining water-stop ring are respectively sealed around the outside of the pipe opening where the inner sleeve and outer sleeve are connected; the annular waterproof plate, the secondary lining water-stop ring and the primary support water-stop ring are provided with fixing holes; the fixing bolts pass through the fixing holes on the primary support water-stop ring, the annular waterproof plate and the secondary lining water-stop ring in sequence and are connected to the fixing nuts, so that the annular waterproof plate is sealed between the primary support water-stop ring and the secondary lining water-stop ring. Both the primary support sleeve and the secondary lining sleeve include a telescopic tube, an outer sleeve, and an inner sleeve; the inner sleeve is slidably inserted into one end of the outer sleeve; the length of the telescopic tube is telescopic, and one end of the telescopic tube is sealed to the inner wall of the inner sleeve, while the other end is sealed to the insertion end of the outer sleeve.

2. A split-type through-wall waterproof sleeve for tunnel construction as described in claim 1, characterized in that, It also includes a sealing ring, which is sealed and filled between the annular waterproof membrane and the secondary lining waterstop ring and the primary support waterstop ring.

3. A split-type through-wall waterproof sleeve for tunnel construction as described in claim 1, characterized in that, The secondary lining waterstop ring and the primary support waterstop ring are both provided with annular sealing grooves on their sides that are close to each other, and the sealing rings are nested in the annular sealing grooves.

4. A split-type through-wall waterproof sleeve for tunnel construction as described in claim 1, characterized in that, A threaded hole is provided through the wall of the insertion end of the outer sleeve and the inner sleeve, and a positioning bolt is connected to the threaded hole.

5. A split-type through-wall waterproof sleeve for tunnel construction as described in claim 1, characterized in that, The telescopic tube is a rubber corrugated pipe, and both the inner sleeve and the outer sleeve are seamless steel pipes.

6. A split-type through-wall waterproof sleeve for tunnel construction as described in claim 5, characterized in that, The primary support water-stop ring and the secondary lining water-stop ring are made of steel plates. The primary support water-stop ring and the secondary lining water-stop ring are respectively sealed and welded to the outside of the inner sleeve opening of the primary support sleeve and the secondary lining sleeve.

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