Supporting waterproof sealing structure of tunnel penetrating pipe

Abstract

The utility model discloses a supporting waterproof sealing structure of a tunnel penetrating pipe, which comprises an initial lining, a secondary lining, a waterproof layer and a through-wall pipe, a drainage pipe is pre-buried in the initial lining, and the drainage pipe sequentially penetrates through the waterproof layer and the secondary lining from the initial lining; the through-wall pipe is arranged in the drainage pipe in a penetrating mode, and first sealing assemblies are arranged at the two ends of the through-wall pipe. A water drainage and storage pipeline is formed between the through-wall pipe and the water drainage pipe, a second sealing assembly is arranged at the end, penetrating out of the secondary lining, of the water drainage and storage pipeline, and a water drainage valve is arranged on the second sealing assembly and communicated with the water drainage and storage pipeline. Drainage is achieved through the drainage water storage pipeline formed between the through-wall pipe and the drainage pipe, the water pressure of the upstream side of the waterproof layer is reduced, water is prevented from leaking along the pipe wall of the through-wall pipe from the connecting position of the waterproof layer and the drainage pipe, and then the safety quality problems such as water drainage and leakage are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support and waterproofing, in particular to a support and waterproof sealing structure for a tunnel penetration pipe. Background Art

[0002] The waterproofing sheet used in tunnel secondary lining construction is a crucial component of tunnel waterproofing. Failure to meet these requirements can lead to concrete leakage. Perennial freeze-thaw cycles and the intense effects of frost heave can cause residual deformation to accumulate year after year, causing displacement and cracking of the lining structure, leading to the gradual failure of the lining concrete. Therefore, effective waterproofing measures are necessary before secondary lining construction to prevent safety and quality issues such as water leakage. While basic waterproofing measures are already in place at the junction of the primary and secondary linings, they are ineffective near wall penetrations, allowing water to easily seep along the walls of these penetrations. Utility Model Content

[0003] The utility model provides a supporting waterproof sealing structure for a tunnel penetration pipe to solve the above technical problems.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A support and waterproof sealing structure for a tunnel penetration pipe comprises: an initial lining, a secondary lining, a waterproof layer and a wall-penetrating pipe, wherein a drainage pipe is pre-buried in the initial lining, and the drainage pipe passes through the waterproof layer and the secondary lining in sequence from the initial lining; the wall-penetrating pipe is passed through the drainage pipe, and a first sealing assembly is provided at both ends of the wall-penetrating pipe; a drainage and water storage pipe is formed between the wall-penetrating pipe and the drainage pipe, and a second sealing assembly is provided at one end of the drainage and water storage pipe passing through the secondary lining, and a drainage valve is provided on the second sealing assembly, and the drainage valve is connected to the drainage and water storage pipe.

[0006] Preferably, the first sealing component is sealed using a waterproof sealant.

[0007] Preferably, the second sealing assembly is sealed with a waterproof sealant, and the drain valve is fixed by the waterproof sealant.

[0008] Preferably, the waterproof layer is sleeved and abutted on the outer circumference of the drain pipe, and a waterproof board is fixed on the side of the waterproof layer away from the initial lining. The waterproof board is sleeved on the outer circumference of the drain pipe, and the inner circle of the waterproof board is separated from the outer circumference of the drain pipe.

[0009] Preferably, the waterproof layer and the waterproof board are fixed to the initial lining by a cement nail combination structure.

[0010] Preferably, the cement nail combination structure includes: a cement nail, a mounting pad and a third sealing component; a blind hole is provided on the side of the waterproof board away from the waterproof layer, the mounting pad is arranged in the blind hole, and the cement nail passes through the mounting pad, the waterproof board and the waterproof layer in sequence and then penetrates the initial lining; the third sealing component is used to cover the blind hole, the mounting pad and the cement nail for sealing.

[0011] Preferably, the drain pipe is also provided with an outward-expanding waterproof plate, which is located on the side of the waterproof plate away from the waterproof layer; the outward-expanding waterproof plate includes an outward-expanding pipe portion and a flat portion, the flat portion is perpendicular to the axis of the drain pipe and abuts the waterproof plate, the outward-expanding pipe portion is sleeved on the drain pipe, one end of the outward-expanding pipe portion is connected to the flat portion, and the other end extends along the axial direction of the drain pipe to the side away from the waterproof plate as a free end.

[0012] Preferably, an annular rubber sheet is provided between the outwardly expanded tube portion and the drain pipe, and the annular rubber sheet is sleeved on the drain pipe; a fixing hoop is provided on the outer periphery of the outwardly expanded tube portion, and the fixing hoop tightens the outwardly expanded tube portion and squeezes the annular rubber sheet.

[0013] Preferably, one end of the annular rubber sheet is bonded to the waterproof layer, and the other end extends to the middle of the outwardly expanded tube portion.

[0014] Beneficial effects:

[0015] The present application discloses a support waterproof sealing structure for a tunnel penetrating pipe, which realizes drainage through a drainage and water storage pipe formed between the wall-penetrating pipe and the drainage pipe, thereby reducing the water pressure on the water-facing side of the waterproof layer, and preventing moisture from leaking along the pipe wall of the wall-penetrating pipe from the connection between the waterproof layer and the drainage pipe, thereby preventing safety and quality problems such as water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a schematic diagram of a structure in which drainage pipes are pre-buried in the initial lining and secondary lining of a supporting waterproof sealing structure for a tunnel penetration pipe disclosed in the utility model;

[0018] Figure 2 This is a structural diagram of a supporting waterproof sealing structure for a tunnel penetration pipe disclosed in the utility model without installing a wall penetration pipe, a first sealing assembly, a second sealing assembly and a drain valve;

[0019] Figure 3 This is a structural schematic diagram of a supporting waterproof sealing structure for a tunnel penetration pipe disclosed in the utility model;

[0020] Figure 4 This is a structural schematic diagram of a combination of an outward-expanded waterproof plate and a fixing hoop in a supporting waterproof sealing structure for a tunnel penetration pipe disclosed in the utility model;

[0021] Figure 5 A cross-sectional view of a combination of an outward-expanded waterproof plate and a fixing hoop of a support waterproof sealing structure for a tunnel penetration pipe disclosed by the present utility model;

[0022] Figure 6 A structural schematic diagram of a cement nail combination structure of a support waterproof sealing structure for a tunnel penetration pipe disclosed by the present utility model.

[0023] 1. Initial lining; 2. Secondary lining; 3. Through-wall pipe; 4. Waterproof layer; 5. Waterproof plate; 6. Outward-expanded waterproof plate; 7. Fixing hoop; 8. Annular rubber sheet; 9. Cement nail combination structure; 91. Cement nail; 92. Installation pad; 93. Third sealing assembly; 10. Drain pipe; 11. Second sealing assembly; 12. Drain valve; 13. First sealing assembly. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] A support waterproof sealing structure for a tunnel penetration pipe, in combination with Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, it includes: an initial lining 1, a secondary lining 2, a waterproof layer 4 and a through-wall pipe 3. The initial lining 1 is pre-buried with a drainage pipe 10, which passes through the waterproof layer 4 and the secondary lining 2 in sequence through the initial lining 1; the through-wall pipe 3 is inserted into the drainage pipe 10, and a first sealing component 13 is provided at both ends of the through-wall pipe 3; a drainage and water storage pipe is formed between the through-wall pipe 3 and the drainage pipe 10, and a second sealing component 11 is provided at one end of the drainage and water storage pipe that passes through the secondary lining 2. The second sealing component 11 is provided with a drainage valve 12, and the drainage valve 12 is connected to the drainage and water storage pipe. Drainage is achieved through the drainage and water storage pipe formed between the through-wall pipe 3 and the drainage pipe 10. The drainage valve 12 can effectively control the water pressure in the drainage and water storage pipe, thereby reducing the water pressure on the water-facing side of the waterproof layer 4, preventing water from leaking from the connection between the waterproof layer 4 and the drainage pipe 10 along the wall of the through-wall pipe 3 after water accumulation, thereby preventing safety and quality problems such as water leakage. At the same time, a first sealing component 13 is applied to both ends of the wall-penetrating pipe 3 to prevent moisture from flowing into the wall-penetrating pipe 3. By setting a drainage pipe 10, the connection position of the initial lining 1 and the secondary lining 2 is separated from the wall-penetrating pipe 3 to prevent moisture from entering the wall-penetrating pipe 3 and prevent the wire from being damaged by contact with water; and the water pressure in the drainage and water storage pipe is controlled by the drainage valve 12, which is also beneficial to the sealing of the first sealing component 13 and prevents the first sealing component 13 from failing due to increased water pressure.

[0026] Specifically, the drain valve 12 may be a pressure relief valve to achieve water pressure control.

[0027] Preferably, the first sealing component 13 is sealed with a waterproof sealant. The second sealing component 11 is sealed with a waterproof sealant, and the drain valve 12 is fixed with the waterproof sealant. The waterproof sealant can effectively prevent moisture from flowing into the inner side of the wall-penetrating pipe 3.

[0028] Specifically, the through-wall pipe 3 and the drainage pipe 10 extend through the initial lining 1 into the soil. One end of the through-wall pipe 3 is supported and fixed by the soil, and the other end is supported by the second sealing assembly 11 between the through-wall pipe 3 and the drainage pipe 10 (and supported after the waterproof sealant cures). Signal transmission lines, such as those for the displacement detection system, pass through the through-wall pipe 3.

[0029] Preferably, waterproof layer 4 is sleeved and abuts the outer periphery of drain pipe 10. A waterproof sheet 5 is fixed to the side of waterproof layer 4 away from primary lining 1. Waterproof sheet 5 is sleeved on the outer periphery of drain pipe 10, with the inner circle of waterproof sheet 5 separated from the outer periphery of drain pipe 10. The double-layer waterproofing achieved by using waterproof layer 4 and waterproof sheet 5 provides a basic waterproof guarantee for the application of secondary lining 2.

[0030] Specifically, the waterproof layer 4 is made of a non-woven fabric buffer layer made of polypropylene, which is non-absorbent and has a zero moisture content, providing excellent waterproofing. The waterproof board 5 is made of a 1.5mm thick PVC waterproof board. The combination of the non-woven fabric buffer layer and the PVC waterproof board provides even better waterproofing.

[0031] Preferably, the waterproof layer 4 and the waterproof board 5 are fixed to the initial lining 1 by a cement nail combination structure 9 to ensure that the waterproof layer 4, the waterproof board 5 and the initial lining 1 are tightly fitted.

[0032] Preferably, the cement nail assembly structure 9 includes: a cement nail 91, a mounting pad 92, and a third sealing assembly 93. A blind hole is provided on the side of the waterproof board 5 away from the waterproof layer 4. The mounting pad 92 is disposed in the blind hole. The cement nail 91 passes through the mounting pad 92, the waterproof board 5, and the waterproof layer 4, and then into the initial lining 1. The third sealing assembly 93 is used to cover the blind hole, mounting pad 92, and cement nail 91 for sealing. The cement nail 91 presses the waterproof board 5 and the waterproof layer 4 against the initial lining 1. The mounting pad 92 increases the stress-bearing area. The third sealing assembly 93 fills the blind hole and covers the blind hole, mounting pad 92, and cement nail 91, achieving a waterproof seal at the junction of the cement nail assembly structure 9 and the waterproof board 5. In this embodiment, the third sealing assembly 93 is made of polyurethane sealant. The polyurethane sealant fills the blind hole, completely encapsulates the head of the cement nail 91, and is adhered to the surface of the waterproof board 5 and covers the entire blind hole.

[0033] Preferably, the drain pipe 10 is also provided with an outward-expanding waterproof plate 6, which is located on the side of the waterproof plate 5 away from the waterproof layer 4; the outward-expanding waterproof plate 6 includes an outward-expanding tube portion and a flat portion, the flat portion being perpendicular to the axis of the drain pipe 10 and abutting the waterproof plate 5, the outward-expanding tube portion being provided on the drain pipe 10, one end of the outward-expanding tube portion being connected to the flat portion, and the other end extending along the axial direction of the drain pipe 10 to the side away from the waterproof plate 5 as a free end. Since the axial dimension of the connection portion between the waterproof layer 4 and the drain pipe 10 is relatively small along the axial direction of the drain pipe 10, the waterproof effect of a single waterproof layer 4 is limited. The addition of the outward-expanding waterproof plate 6 and the waterproof layer 4 can enhance the waterproof sealing effect and prevent water leakage. In this embodiment, the outward-expanding waterproof plate 6 is made of PVC waterproof plate to achieve a better waterproof effect.

[0034] Preferably, an annular rubber sheet 8 is provided between the outward-expanding tube portion and the drain pipe 10, and is sleeved onto the drain pipe 10. A fixing hoop 7 is provided on the outer periphery of the outward-expanding tube portion, which tightens the outward-expanding tube portion and compresses the annular rubber sheet 8, thereby securing the outward-expanding waterproofing plate 6 to the drain pipe 10 and preventing water leakage caused by loosening of the outward-expanding waterproofing plate 6. Furthermore, the elastic deformation of the annular rubber sheet 8 after being squeezed eliminates gaps, ensuring a tight fit between the outward-expanding tube portion, the annular rubber sheet 8, and the drain pipe 10, achieving a reliable seal. In this embodiment, the annular rubber sheet 8 is made of butyl rubber.

[0035] Preferably, one end of the annular rubber sheet 8 is adhered to the waterproof layer 4, and the other end extends to the middle of the outwardly expanding pipe portion. The waterproof layer 4 and the drain pipe 10 are likely to generate gaps under the strong action of frost heaving force. After the annular rubber sheet 8 is adhered to the waterproof layer 4, it can prevent water from penetrating through the gap between the waterproof layer 4 and the drain pipe 10.

[0036] Specifically, after filling the area enclosed by the waterproof layer 4, the annular rubber sheet 8 and the waterproof board 5 with waterproof sealant (not shown in the figure), and then installing the outwardly expanding waterproof board 6, it can relieve the influence of frost heaving force on the waterproof layer 4, the annular rubber sheet 8, the waterproof board 5 and the outwardly expanding waterproof board 6, and further enhance the waterproof effect.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A support waterproof sealing structure for a tunnel penetration pipe, comprising: Initial lining (1), secondary lining (2), waterproof layer (4) and through-wall pipe (3), characterized in that a drain pipe (10) is embedded in the initial lining (1), and the drain pipe (10) sequentially passes through the waterproof layer (4) and the secondary lining (2) from the initial lining (1); the through-wall pipe (3) is arranged inside the drain pipe (10), and first sealing components (13) are provided at both ends of the through-wall pipe (3); a drainage and water storage pipe is formed between the through-wall pipe (3) and the drain pipe (10), and a second sealing component (11) is provided at one end of the drainage and water storage pipe passing through the secondary lining (2), a drain valve (12) is provided on the second sealing component (11), and the drain valve (12) communicates with the drainage and water storage pipe.

2. The waterproof and sealing support structure of a tunnel penetration pipe according to claim 1, characterized in that, The first sealing component (13) is sealed with waterproof sealant.

3. The waterproof and sealing support structure of a tunnel penetration pipe according to claim 1, characterized in that, The second sealing component (11) is sealed with waterproof sealant, and the drain valve (12) is fixed by the waterproof sealant.

4. The waterproof and sealing support structure of a tunnel penetration pipe according to claim 1, characterized in that, The waterproof layer (4) is sleeved and abutted on the outer periphery of the drain pipe (10), a waterproof board (5) is fixed on the side of the waterproof layer (4) away from the initial lining (1), the waterproof board (5) is sleeved on the outer periphery of the drain pipe (10), and the inner circle of the waterproof board (5) is separated from the outer periphery of the drain pipe (10).

5. The waterproof and sealing structure for supporting a tunnel penetration pipe according to claim 4, characterized in that, The waterproof layer (4) and the waterproof board (5) are fixed on the initial lining (1) through a cement nail combination structure (9).

6. The waterproof and sealing support structure of a tunnel penetration pipe according to claim 5, characterized in that, The cement nail combination structure (9) includes: a cement nail (91), a mounting pad (92) and a third sealing component (93); a blind hole is provided on the side of the waterproof board (5) away from the waterproof layer (4), the mounting pad (92) is arranged in the blind hole, the cement nail (91) sequentially passes through the mounting pad (92), the waterproof board (5) and the waterproof layer (4) and then penetrates into the initial lining (1); the third sealing component (93) is used to cover the blind hole, the mounting pad (92) and the cement nail (91) for sealing.

7. The waterproof and sealing structure for supporting a tunnel penetration pipe according to claim 4, characterized in that, An outward-expanded waterproof board (6) is further sleeved on the drain pipe (10), and the outward-expanded waterproof board (6) is located on the side of the waterproof board (5) away from the waterproof layer (4); the outward-expanded waterproof board (6) includes an outward-expanded pipe part and a flat part, the flat part is perpendicular to the axis of the drain pipe (10) and abuts against the waterproof board (5), the outward-expanded pipe part is sleeved on the drain pipe (10), and one end of the outward-expanded pipe part is connected to the flat part and the other end extends along the axial direction of the drain pipe (10) to the side away from the waterproof board (5) as a free end.

8. The waterproof and sealing structure for supporting a tunnel penetration pipe according to claim 7, characterized in that, An annular rubber sheet (8) is further provided between the outward-expanded pipe part and the drain pipe (10), and the annular rubber sheet (8) is sleeved on the drain pipe (10); a fixing hoop (7) is provided on the outer periphery of the outward-expanded pipe part, and the fixing hoop (7) tightens the outward-expanded pipe part and squeezes the annular rubber sheet (8).

9. The waterproof and sealing support structure of a tunnel penetration pipe according to claim 8, characterized in that One end of the annular rubber sheet (8) is bonded to the waterproof layer (4) and the other end extends to the middle of the outward-expanded pipe part.

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