CN112983502B - Tunnel waterproof method and tunnel waterproof structure - Google Patents
Tunnel waterproof method and tunnel waterproof structure Download PDFInfo
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- CN112983502B CN112983502B CN202110395659.1A CN202110395659A CN112983502B CN 112983502 B CN112983502 B CN 112983502B CN 202110395659 A CN202110395659 A CN 202110395659A CN 112983502 B CN112983502 B CN 112983502B
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000010410 layer Substances 0.000 claims abstract description 132
- 239000011229 interlayer Substances 0.000 claims abstract description 12
- 238000004078 waterproofing Methods 0.000 claims description 19
- 239000002390 adhesive tape Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
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- 238000010276 construction Methods 0.000 description 4
- 239000011120 plywood Substances 0.000 description 4
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- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a tunnel waterproof method and a tunnel waterproof structure, wherein the tunnel waterproof method comprises the following steps: step S1: forming a crown beam in the pilot tunnel, and forming a first waterproof layer along the inner wall of the pilot tunnel and the top wall and the side wall of the crown beam; step S2: forming a second waterproof layer above the crown beam and between the first waterproof layer, forming a top plate in the pilot tunnel, and enabling a first waterproof section of the second waterproof layer to be clamped between the first waterproof layer and the side wall of the end part of the top plate; and step S3: after the interlayer is arranged above the second waterproof section, concrete is poured between the top wall of the end part of the top plate and the arched wall of the pilot tunnel; and step S4: and breaking the concrete and the interlayer, and then building the side wall above the arched wall. The technical scheme of this application has solved the gap between the tip of guide hole and roof in the correlation technique gradually grow effectively, has the problem of percolating water.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a waterproof method and a waterproof structure of a tunnel.
Background
In the related art, a tunnel includes a pilot tunnel, a crown beam, and a roof plate, wherein the pilot tunnel includes a first vertical wall, a second vertical wall, and an arched wall connecting the first vertical wall and the second vertical wall, the crown beam is located below the arched wall and connected to the first vertical wall, an end of the roof plate extends to a position of the first vertical wall through the second vertical wall, and an end of the roof plate is located above the crown beam. And plastic waterproof plates are sequentially paved on the inner side of the arched wall, between the first vertical wall and the end part of the top plate and between the crown beam and the top plate. Like this, the plastics flashing can seal the gap between the tip of first vertical wall and roof and between crown beam and the roof, plays water-proof effects.
However, when the building is constructed again above the pilot tunnel, the building pushes down the pilot tunnel, so that a gap between the pilot tunnel and the end of the ceiling is gradually increased, and the gap is easily generated again, thereby causing a water leakage phenomenon.
Disclosure of Invention
The invention mainly aims to provide a tunnel waterproof method and a tunnel waterproof structure, which aim to solve the problem that the gap between the end part of a guide hole and the end part of a top plate in the related art is gradually enlarged and water leakage exists.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method of waterproofing a tunnel, the method comprising the steps of: step S1: forming a crown beam in the pilot tunnel, and forming a first waterproof layer along the inner wall of the pilot tunnel and the top wall and the side wall of the crown beam; step S2: forming a second waterproof layer above the crown beam and between the first waterproof layer, forming a top plate in the pilot tunnel, and enabling a first waterproof section of the second waterproof layer to be clamped between the first waterproof layer and the side wall of the end part of the top plate; and step S3: after the interlayer is arranged above the second waterproof section, concrete is poured between the top wall of the end part of the top plate and the arched wall of the pilot tunnel; and step S4: breaking concrete and an interlayer, and then building a side wall above the arched wall; step S5: and after the side wall is built, a third waterproof layer is formed outside the side wall, and part of the third waterproof layer extends into the pilot hole and is in lap joint with the second waterproof section.
Further, in step S5, the step of extending a part of the third waterproof layer into the pilot hole and overlapping and matching with the second waterproof section includes: the part of the third waterproof layer extending into the pilot hole is bent to form a third waterproof section and a fourth waterproof section, and the fourth waterproof section is in lap joint with the second waterproof section.
Further, in step S5, the step of fitting the fourth waterproof section to the second waterproof section in an overlapping manner includes: the fourth waterproof section is in lap joint with the second waterproof section in a heating mode.
Further, in step S2, a closing-in process is performed on the first waterproof layer located on the top wall of the crown beam and the first waterproof section at the intersection, and a grouting pipe is embedded in the intersection.
Further, in step S2, the second waterproof layer includes an outer layer and an inner layer, the outer layer is laid on the first waterproof layer, and the inner layer is thermally welded on the outer layer.
According to another aspect of the present invention, there is provided a waterproof structure of a tunnel, the tunnel including a pilot tunnel, a crown beam, a roof panel, and side walls, wherein the pilot tunnel includes a first vertical wall, a second vertical wall, and an arch wall connecting the first vertical wall and the second vertical wall, the crown beam is located below the arch wall and connected to the first vertical wall, an end of the roof panel extends to a position of the first vertical wall through the second vertical wall, an end of the roof panel is located above the crown beam, the side walls are located above the arch wall, the waterproof structure of the tunnel is constructed by the above waterproof method of a tunnel, the waterproof structure of a tunnel includes: the first waterproof layers are sequentially paved on the inner side of the arched wall, between the first vertical wall and the end part of the top plate and between the crown beam and the top plate; the second waterproof layer comprises a first waterproof section and a second waterproof section which are arranged in a bent mode, the first waterproof section is clamped between the first waterproof layer corresponding to the first vertical wall and the side wall of the end portion of the top plate, and the second waterproof section is arranged on the top wall of the end portion of the top plate; and the third water layer is arranged on the side wall, and a part of the third water layer extends into the pilot hole and is in lap joint with the second waterproof section.
Further, the height of the first waterproof section overlapped with the first waterproof layer is more than 1 m.
Further, stretch into the setting of bending of the partial third water layer of the below of arch wall, and this partial third water layer includes third waterproof section and fourth waterproof section, and fourth waterproof section sets up with the overlap joint of second waterproof section.
Furthermore, the overlapping height of the fourth waterproof section and the second waterproof section is more than 1 m.
Further, the waterproof structure of the tunnel further comprises an adhesive tape and a fastener, and the fastener penetrates through the adhesive tape, the bottom end of the first waterproof section and the first waterproof layer to be connected to the first vertical wall.
The technical scheme of the invention is applied to a tunnel waterproof method, and the tunnel waterproof method comprises the following steps: step S1: forming a crown beam in the pilot tunnel, and forming a first waterproof layer along the inner wall of the pilot tunnel and the top wall and the side wall of the crown beam; step S2: forming a second waterproof layer above the crown beam and between the first waterproof layer, forming a top plate in the pilot tunnel, and enabling a first waterproof section of the second waterproof layer to be clamped between the first waterproof layer and the side wall of the end part of the top plate, wherein a second waterproof section of the second waterproof layer is positioned on the top wall of the end part of the top plate; and step S3: after the interlayer is arranged above the second waterproof section, concrete is poured between the top wall of the end part of the top plate and the arched wall of the pilot tunnel; and step S4: breaking the concrete and the interlayer, and then building a side wall above the arched wall; step S5: and after the side wall is built, forming a third waterproof layer outside the side wall, wherein a part of the third waterproof layer extends into the pilot tunnel and is in lap joint with the second waterproof section. Like this, increase the second waterproof layer and can seal between the lateral wall of the tip of first waterproof layer and roof, simultaneously, partly stretch into in the pilot hole and with the waterproof section overlap joint cooperation of second gap between the roof that can seal the tip of side wall, arch wall and roof in the third waterproof layer. Therefore, the waterproof method of the tunnel effectively seals the gap between the end parts of the guide hole and the top plate, and achieves the purpose of preventing water leakage. Therefore, the technical scheme of this application has solved effectively that the gap between the tip of pilot tunnel and roof in the correlation technique is crescent gradually, has the problem of percolating water.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a flow chart of an embodiment of a method of waterproofing a tunnel according to the present invention;
fig. 2 shows a schematic front view of an embodiment of a waterproofing structure of a tunnel according to the present invention; and
fig. 3 shows a partial schematic view of a waterproof structure of the tunnel of fig. 2.
Wherein the figures include the following reference numerals:
10. guiding a hole; 11. a first vertical wall; 12. a second vertical wall; 13. an arcuate wall; 20. a crown beam; 30. a top plate; 40. a first waterproof layer; 50. a second waterproof layer; 51. a first waterproof section; 52. a second waterproof section; 60. a side wall; 70. a third water layer; 71. a third water prevention section; 72. a fourth waterproof section; 80. concrete; 91. an adhesive tape; 92. a fastener.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 to 3, the method for waterproofing a tunnel of the present embodiment includes the steps of: step S1: forming a crown beam 20 in the pilot tunnel 10, and forming a first waterproof layer 40 along the inner wall of the pilot tunnel 10 and the top wall and the side wall of the crown beam 20; step S2: forming a second waterproof layer 50 between the upper part of the crown beam 20 and the first waterproof layer 40, forming the top plate 30 in the pilot tunnel 10, and enabling a first waterproof section 51 of the second waterproof layer 50 to be clamped between the first waterproof layer 40 and the side wall of the end part of the top plate 30, and a second waterproof section 52 of the second waterproof layer to be located on the top wall of the end part of the top plate 30; and step S3: after the partition is provided above the second waterproof section 52, concrete 80 is poured between the top wall of the end of the roof panel 30 and the arch-shaped wall 13 of the pilot tunnel 10; and step S4: breaking the concrete 80 and the interlayer, and then building a side wall 60 above the arched wall 13; step S5: after the side wall 60 is built, a third waterproof layer 70 is formed outside the side wall 60, and a part of the third waterproof layer 70 extends into the pilot hole 10 and is in lap joint with the second waterproof section 52.
By applying the technical scheme of the embodiment, the tunnel waterproof method comprises the following steps: step S1: forming a crown beam 20 in the pilot tunnel 10, and forming a first waterproof layer 40 along the inner wall of the pilot tunnel 10 and the top wall and the side wall of the crown beam 20; step S2: forming a second waterproof layer 50 between the upper side of the crown beam 20 and the first waterproof layer 40, forming the top plate 30 in the pilot tunnel 10, and enabling a first waterproof section 51 of the second waterproof layer 50 to be clamped between the first waterproof layer 40 and the side wall of the end part of the top plate 30, and a second waterproof section 52 of the second waterproof layer to be located on the top wall of the end part of the top plate 30; and step S3: after the interlayer is arranged above the second waterproof section 52, concrete 80 is poured between the top wall of the end part of the top plate 30 and the arched wall 13 of the pilot tunnel 10; and step S4: breaking the concrete 80 and the interlayer, and then building a side wall 60 above the arched wall 13; step S5: after the construction of the side wall 60 is completed, a third waterproof layer 70 is formed outside the side wall 60, and a part of the third waterproof layer 70 extends into the pilot tunnel 10 and is in lap joint with the second waterproof section 52. In this way, the second waterproof layer 50 is added to be capable of being sealed between the first waterproof layer 40 and the side wall of the end portion of the top plate 30, and meanwhile, a part of the third waterproof layer 70 extends into the pilot hole 10 and is in lap joint with the second waterproof section 52 to be capable of sealing gaps between the side wall 60, the arched wall 13 and the top wall of the end portion of the top plate 30. As described above, the method for waterproofing a tunnel according to the present embodiment effectively seals the gap between the tunnel 10 and the end of the top plate 30, thereby preventing water leakage. Therefore, the technical scheme of the embodiment effectively solves the problem that the gap between the guide hole and the end part of the top plate in the related art is gradually enlarged and water leakage exists.
In this embodiment, the interlayer comprises 350# linoleum and 1.5cm thick bamboo plywood. Firstly, the No. 350 paper tire felt is covered on the second waterproof section 52, then a bamboo plywood with the thickness of 1.5cm is used for temporarily protecting the surface of the second waterproof section 52, and meanwhile, the bamboo plywood with the thickness of 1.5cm is used for isolating the top plate from the concrete 80. Thus, the bamboo plywood itself has high elasticity and hardness, and can ensure that the second waterproof section 52 is not directly damaged during breaking construction.
The first waterproof layer 40 of this embodiment is preferably an ECB (ethylene vinyl acetate and asphalt copolymer) plastic waterproof sheet. The second waterproof layer 50 and the third waterproof layer 70 are both preferably SBS (styrene-butadiene-styrene) modified asphalt waterproof rolls. Thus, the second waterproof layer 50 and the third waterproof layer 70 have high low-temperature softness and heat resistance, and have strong adaptability to shrinkage deformation and cracking of the end portions of the pilot hole 10 and the top plate 30.
As shown in fig. 1 to 3, in step S5, the step of extending a part of the third waterproof layer 70 into the pilot hole 10 and overlapping and matching with the second waterproof section 52 includes: the part of the third waterproof layer 70 extending into the pilot hole 10 is bent to form a third waterproof section 71 and a fourth waterproof section 72, and the fourth waterproof section 72 is in lap joint with the second waterproof section 52. In this way, the portion of the third waterproof layer 70 extending into the pilot hole 10 is bent to facilitate the lap joint of the fourth waterproof section 72 and the second waterproof section 52. The lap joint of the fourth waterproof section 72 and the second waterproof section 52 can ensure that the third waterproof layer 70 and the second waterproof layer 50 can be well connected, which is beneficial to improving the matching quality.
As shown in fig. 1 to 3, in order to reliably connect the fourth waterproof section 72 to the second waterproof section 52, in step S5, the step of lap-fitting the fourth waterproof section 72 to the second waterproof section 52 includes: the fourth waterproof section 72 is overlapped with the second waterproof section 52 by heating.
As shown in fig. 1 to 3, in order to enable the first waterproof layer 40 and the first waterproof section 51 at the top wall of the crown beam 20 to be tightly fitted together at the intersection, and to improve the tightness of the fit between the first waterproof layer 40 and the first waterproof section 51, in step S2, the first waterproof layer 40 and the first waterproof section 51 at the top wall of the crown beam 20 are subjected to a necking process at the intersection, and a grouting pipe is embedded at the intersection.
As shown in fig. 1 to 3, in order to enable the second waterproof layer 50 to be better laid on the first waterproof layer 40, in step S2, the second waterproof layer 50 includes an outer layer and an inner layer, the outer layer is laid on the first waterproof layer 40, and the inner layer is thermally welded on the outer layer. In this embodiment, both the outer layer and the inner layer are preferably made of SBS class II PY (polyester felt carcass) PE (surface polyethylene film) 4 (thickness 4 mm). Thus, the second waterproof layer 50 has high low-temperature flexibility and heat resistance, and has strong adaptability to shrinkage deformation and cracking of the ends of the pilot hole 10 and the top plate 30.
The present application further provides a waterproof structure of a tunnel, as shown in fig. 2 and 3, the tunnel of the present embodiment includes a pilot tunnel 10, a crown beam 20, a top plate 30, and a side wall 60. The pilot tunnel 10 includes a first vertical wall 11, a second vertical wall 12, and an arched wall 13 connecting the first vertical wall 11 and the second vertical wall 12, the crown beam 20 is located below the arched wall 13 and connected to the first vertical wall 11, an end of the top plate 30 extends to a position of the first vertical wall 11 through the second vertical wall 12, an end of the top plate 30 is located above the crown beam 20, and the side wall 60 is located above the arched wall 13. The waterproof structure of the tunnel is constructed by the above waterproof method of the tunnel. Waterproof construction in tunnel includes: a first waterproof layer 40, a second waterproof layer 50 and a third waterproof layer 70. The first waterproof layer 40 is laid in sequence inside the arched wall 13, between the first vertical wall 11 and the end of the roof panel 30, and between the crown beam 20 and the roof panel 30. The second waterproof layer 50 includes a first waterproof section 51 and a second waterproof section 52 which are bent, and the first waterproof section 51 is interposed between the side walls of the end portions of the first waterproof layer 40 and the top plate 30 corresponding to the first vertical wall 11. The second waterproof section 52 is provided on the top wall of the end of the top panel 30. The third waterproof layer 70 is disposed on the side wall 60, and a portion of the third waterproof layer 70 extends into the pilot hole 10 and is in lap joint with the second waterproof section 52. Since the above-mentioned waterproofing method for a tunnel can solve the problem of water leakage due to the gradually enlarged gap between the end of the guide hole and the top plate in the related art, the same technical problems can be solved by the waterproofing structure for a tunnel constructed by the above-mentioned waterproofing method for a tunnel.
As shown in fig. 2 and 3, in order to improve the tightness of the connection between the first waterproof layer 40 and the first waterproof layer 51, the height D1 of the first waterproof layer 40 and the first waterproof layer 51 overlapping each other is 1m or more.
As shown in fig. 2 and 3, in order to facilitate the connection of the third waterproof layer 70 and the second waterproof layer 50 and ensure the sealing effect, the portion of the third waterproof layer 70 extending below the arched wall 13 is bent, and the portion of the third waterproof layer 70 includes a third waterproof section 71 and a fourth waterproof section 72, and the fourth waterproof section 72 is overlapped with the second waterproof section 52.
As shown in fig. 2 and 3, in order to increase the tightness of the connection between the fourth waterproof section 72 and the second waterproof section 52, the height D2 of the fourth waterproof section 72 overlapping the second waterproof section 52 is 1m or more.
As shown in fig. 3, the waterproof structure of the tunnel further includes an adhesive tape 91 and a fastener 92. The fastener 92 is coupled to the first vertical wall 11 through the adhesive tape 91, the bottom end of the first waterproof section 51 and the first waterproof layer 40. In this way, the fastener 92 and the adhesive tape 91 are provided to firmly fix the bottom end of the first waterproof section 51 and the first waterproof layer 40 to the first vertical wall 11. The adhesive tape 91 of this embodiment is preferably a double-sided adhesive butyl tape. The fasteners 92 are preferably stainless steel battens and cement nails.
In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for waterproofing a tunnel, comprising the steps of:
step S1: forming a crown beam (20) in the pilot tunnel (10), and forming a first waterproof layer (40) along the inner wall of the pilot tunnel (10) and the top wall and the side wall of the crown beam (20);
step S2: forming a second waterproof layer (50) above the crown beam (20) and between the first waterproof layer (40), forming a top plate (30) in the pilot tunnel (10), and enabling a first waterproof section (51) of the second waterproof layer (50) to be clamped between the first waterproof layer (40) and the side wall of the end part of the top plate (30), wherein a second waterproof section (52) of the second waterproof layer is positioned on the top wall of the end part of the top plate (30);
and step S3: after the interlayer is arranged above the second waterproof section (52), pouring concrete (80) between the top wall of the end part of the top plate (30) and the arched wall (13) of the pilot tunnel (10);
and step S4: breaking the concrete (80) and the interlayer, and then building a side wall (60) above the arched wall (13);
step S5: and after the side wall (60) is built, a third waterproof layer (70) is formed outside the side wall (60), and a part of the third waterproof layer (70) extends into the pilot hole (10) and is in lap joint with the second waterproof section (52).
2. The method for waterproofing a tunnel according to claim 1, wherein in the step S5, the step of extending a portion of the third waterproof layer (70) into the pilot hole (10) and lap-fitting the second waterproof section (52) comprises:
and the part of the third waterproof layer (70) extending into the pilot hole (10) is bent to form a third waterproof section (71) and a fourth waterproof section (72), and the fourth waterproof section (72) is in lap joint with the second waterproof section (52).
3. The method of waterproofing a tunnel according to claim 2, wherein the step of lap-fitting the fourth waterproof section (72) with the second waterproof section (52) in the step S5 comprises: the fourth waterproof section (72) is overlapped with the second waterproof section (52) in a heating mode.
4. The method for waterproofing a tunnel according to claim 1, wherein in the step S2, the first waterproof layer (40) at the top wall of the crown beam (20) and the first waterproof section (51) are subjected to a necking process at an intersection, and a grouting pipe is embedded at the intersection.
5. The method of waterproofing a tunnel according to claim 1, wherein in the step S2, the second waterproof layer (50) includes an outer layer on which the first waterproof layer (40) is laid and an inner layer on which the inner layer is thermally welded.
6. A waterproof structure of a tunnel, characterized in that the tunnel comprises a pilot tunnel (10), a crown beam (20), a roof plate (30) and side walls (60), wherein the pilot tunnel (10) comprises a first vertical wall (11), a second vertical wall (12) and an arch wall (13) connecting the first vertical wall (11) and the second vertical wall (12), the crown beam (20) is located below the arch wall (13) and connected with the first vertical wall (11), an end of the roof plate (30) extends through the second vertical wall (12) to a position of the first vertical wall (11), an end of the roof plate (30) is located above the crown beam (20), and the side walls (60) are located above the arch wall (13), the waterproof structure of the tunnel is constructed by the waterproof method of the tunnel according to any one of claims 1 to 5, the waterproof structure of the tunnel comprising:
a first waterproof layer (40) laid in sequence on the inner side of the arched wall (13), between the first vertical wall (11) and the end of the roof (30), and between the crown beam (20) and the roof (30);
the second waterproof layer (50) comprises a first waterproof section (51) and a second waterproof section (52) which are arranged in a bent mode, the first waterproof section (51) is clamped between the first waterproof layer (40) corresponding to the first vertical wall (11) and the side wall of the end portion of the top plate (30), and the second waterproof section (52) is arranged on the top wall of the end portion of the top plate (30);
and a third water-proofing layer (70) is arranged on the side wall (60), and a part of the third water-proofing layer (70) extends into the pilot hole (10) and is in lap joint with the second waterproof section (52).
7. The waterproof structure of a tunnel according to claim 6, wherein a height (D1) at which the first waterproof section (51) coincides with the first waterproof layer (40) is 1m or more.
8. The waterproof structure of a tunnel according to claim 6, wherein a portion of the third waterproof layer (70) extending below the arched wall (13) is bent, and the portion of the third waterproof layer (70) includes a third waterproof section (71) and a fourth waterproof section (72), and the fourth waterproof section (72) is overlapped with the second waterproof section (52).
9. The waterproofing structure for tunnels according to claim 8, wherein the height (D2) at which the fourth waterproofing section (72) coincides with the second waterproofing section (52) is 1m or more.
10. The waterproofing structure for tunnels according to claim 6, further comprising an adhesive tape (91) and a fastener (92), wherein the fastener (92) is attached to the first vertical wall (11) through the adhesive tape (91), the bottom end of the first waterproof section (51) and the first waterproof layer (40).
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