CN114876528A - Tunnel waterproof structure and method - Google Patents
Tunnel waterproof structure and method Download PDFInfo
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- CN114876528A CN114876528A CN202210487356.7A CN202210487356A CN114876528A CN 114876528 A CN114876528 A CN 114876528A CN 202210487356 A CN202210487356 A CN 202210487356A CN 114876528 A CN114876528 A CN 114876528A
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- 239000000463 material Substances 0.000 claims abstract description 114
- 238000003466 welding Methods 0.000 claims abstract description 88
- 238000004078 waterproofing Methods 0.000 claims abstract description 78
- 239000012528 membrane Substances 0.000 claims description 53
- 239000010410 layer Substances 0.000 claims description 44
- 238000002955 isolation Methods 0.000 claims description 39
- 239000012790 adhesive layer Substances 0.000 claims description 17
- 238000010276 construction Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000005465 channeling Effects 0.000 abstract description 5
- NOQGZXFMHARMLW-UHFFFAOYSA-N Daminozide Chemical group CN(C)NC(=O)CCC(O)=O NOQGZXFMHARMLW-UHFFFAOYSA-N 0.000 description 21
- 239000012943 hotmelt Substances 0.000 description 10
- 238000007569 slipcasting Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 6
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- 230000000181 anti-adherent effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- 238000005266 casting Methods 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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- 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
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel waterproof structure and a tunnel waterproof method, which relate to the technical field of tunnel waterproofing and comprise the following steps: the first waterproof coiled material is laid on the tunnel arch wall, two adjacent first waterproof coiled materials are overlapped through first overlapping edges of the first waterproof coiled material, the two overlapped first overlapping edges are connected through a first strip-shaped welding part, and the first waterproof coiled material forms a flash part on the outer side of the first strip-shaped welding part; the second waterproof coiled material is laid on the tunnel inverted arch and is lapped with the second lapping edge of the first waterproof coiled material, the second waterproof coiled material is connected with the second lapping edge through a second strip-shaped welding part, and the second strip-shaped welding part is perpendicular to the first strip-shaped welding part; the flash part between the second overlapping edge and the second waterproof coiled material is cut off; the overlap portion between the second overlapping edge and the second waterproof roll is cut off, so that the first strip-shaped welding portion is exposed, a water channeling channel formed by the overlap portion is eliminated when the first waterproof roll is overlapped with the second waterproof roll, and the waterproof effect of the T-shaped node is improved.
Description
Technical Field
The invention belongs to the technical field of tunnel waterproofing, and particularly relates to a tunnel waterproofing structure and method.
Background
Waterproof in tunnel is a key link in tunnel construction always, and waterproof in tunnel includes the waterproof construction on a plurality of nodes, for example: when the waterproof board inverted arch stubble throwing coiled material in the tunnel is lapped with the arch wall stubble throwing coiled material, a T-shaped lapping node is generated, because the tunnel coiled material is mostly welded by double welding seams, a hot wedge of a double welding seam welder is arranged between an upper coiled material and a lower coiled material to heat the coiled material, a roller automatically climbs and welds and generates extrusion force, so that the upper coiled material and the lower coiled material with molten surfaces are adhered together, but because the roller of the welding machine is inevitably kept a certain distance from the edge of the coiled material during welding, the outer edges of the upper coiled material and the lower coiled material at the position are not adhered to form what is commonly called flash, when the arch wall coiled material with the flash is jointed with the inverted arch coiled material after being lapped, the hot wedge of the welding machine heats the upper surface of the lower coiled material, the flash outside the welding seam of the arch wall coiled material can not be welded, therefore, a water channeling channel is generated at the position, and water leakage is easily generated at the position in the later period in the tunnel.
Disclosure of Invention
The invention aims to provide a tunnel waterproof structure and a tunnel waterproof method aiming at the defects in the prior art, the flashing part of the waterproof structure between the second overlapping edge and the second waterproof coiled material is cut off, so that the first strip-shaped welding part is exposed, a water channeling channel formed by the flashing part is eliminated when the first waterproof coiled material is overlapped with the second waterproof coiled material, and the waterproof effect at a T-shaped node is improved.
In order to achieve the above object, the present invention provides a tunnel waterproofing structure comprising:
the first waterproof coiled material is laid on the tunnel arch wall, two adjacent first waterproof coiled materials are overlapped through first overlapping edges of the first waterproof coiled material, the two overlapped first overlapping edges are connected through a first strip-shaped welding part, and a flash part is formed on the outer side of the first strip-shaped welding part by the first waterproof coiled material;
the second waterproof coiled material is laid on the tunnel inverted arch and is lapped with the second lapping edge of the first waterproof coiled material, the second waterproof coiled material is connected with the second lapping edge through a second strip-shaped welding part, and the second strip-shaped welding part is perpendicular to the first strip-shaped welding part;
the flash portion between the second overlapping edge and the second waterproofing membrane is cut off.
Optionally, still include the isolation layer, the isolation layer is the strip, the isolation layer is followed the axial paste in tunnel is in tunnel arch wall top one side that first waterproofing membrane is close to the tunnel invert.
Optionally, the second overlapping edge is located at the lower side of the second waterproof roll, and a chamfer is arranged at the edge of the first waterproof roll contacting with the second waterproof roll.
Optionally, one side of the first waterproof roll close to the inside of the tunnel is provided with two lining structures, and a grouting channel is formed between the two lining structures and the isolation layer.
Optionally, the tunnel includes main tunnel and cross bore, main tunnel with the handing-over position of cross bore is provided with waterproof connecting piece, waterproof connecting piece includes grafting portion and alar part, grafting portion is arc, grafting portion inserts and establishes in the cross bore and can with the laminating of the hunch wall inner wall of cross bore, the alar part set up in the periphery of grafting portion one end, the alar part is in grafting portion inserts behind the cross bore with the laminating of the hunch wall inner wall of main tunnel, the internal peripheral surface of grafting portion with the alar part is kept away from one side of grafting portion is provided with the adhesive layer on the surface.
Optionally, a part of the first waterproof roll laid on the arch wall of the main tunnel, which is close to the transverse tunnel, is bonded to the wing part, and a part of the first waterproof roll laid on the arch wall of the transverse tunnel, which is close to the main tunnel, is bonded to the inserting part.
The invention also provides a tunnel waterproof method, based on the tunnel waterproof structure, the waterproof method comprises the following steps:
paving a first waterproof roll and a second waterproof roll on the tunnel arch wall and the tunnel inverted arch respectively;
welding the adjacent first waterproof coiled materials through a first strip-shaped welding part, and forming a flash part on the outer side of the first strip-shaped welding part;
cutting off a part of the flash part close to the second waterproof coiled material;
and welding the first waterproof coiled material with the cut-off part of the flash part with the second waterproof coiled material through a second strip-shaped welding part.
Optionally, the method further comprises:
and arranging an isolation layer on the top of the tunnel arch wall.
Optionally, a chamfer is cut from the edge of the first waterproof roll from which part of the flash portion has been cut, and then the first waterproof roll and the second waterproof roll after the chamfer is cut are welded.
Optionally, after the isolation layer is adhered, a second lining structure is constructed on one side of the first waterproof roll material close to the inside of the tunnel, so that a grouting channel is formed between the second lining structure and the isolation layer.
Optionally, the tunnel comprises a main tunnel and a transverse tunnel, and before the first waterproof roll is laid on the arch wall of the main tunnel and the arch wall of the transverse tunnel, a waterproof connecting piece is installed at the joint of the main tunnel and the transverse tunnel;
the waterproof connecting piece comprises an inserting part and a wing part, the inserting part is arc-shaped, the wing part is arranged on the periphery of one end of the inserting part, and an adhesive layer is arranged on the inner peripheral surface of the inserting part and the surface of one side, far away from the inserting part, of the wing part;
and inserting the inserting part into the transverse hole to enable the inserting part to be attached to the inner wall of the arch wall of the transverse hole, and attaching the wing part to the inner wall of the arch wall of the main tunnel after the inserting part is inserted into the transverse hole.
Optionally, when the first waterproof roll is laid in the main tunnel, the part, close to the transverse hole, of the first waterproof roll is pasted on the wing part; when the first waterproof roll is laid in the transverse hole, the part, close to the main tunnel, of the first waterproof roll is adhered to the inserting part.
The invention provides a tunnel waterproof structure and a tunnel waterproof method, which have the beneficial effects that:
1. the overlap part between the second overlapping edge and the second waterproof coiled material is cut off, so that the first strip-shaped welding part is exposed, a water channeling channel formed by the overlap part is eliminated when the first waterproof coiled material is overlapped with the second waterproof coiled material, and the waterproof effect at the T-shaped node is improved;
2. the arrangement of the isolation layer can avoid the situation that when the pre-paved anti-sticking waterproof coiled material and the pre-paved anti-sticking construction method are adopted for construction, the top of the tunnel arch wall and the two lining structures form multipoint distributed type separation adhesion, so that a large number of grouting pipes need to be arranged and the grouting effect is difficult to ensure;
3. waterproof connecting piece's setting can be through grafting portion and cross-hole plug-in connection, through the inner wall laminating of alar part and main tunnel, just so can be close to the part direct paste of main tunnel with first waterproofing membrane when spreading in the cross-hole and paste first waterproofing membrane on grafting portion, just can be close to the part direct paste of cross-hole with first waterproofing membrane when spreading in main tunnel and paste first waterproofing membrane on the alar part, the construction of not only being convenient for the spreading of cross-hole and main tunnel hookup location's first waterproofing membrane, also can provide the water-proof effects of this position.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic view of the waterproofing structure at the T-shaped nodes of a first waterproofing roll and a second waterproofing roll of a tunnel waterproofing structure according to an embodiment of the present invention.
Figure 2 shows a schematic view of the overlapping structure of adjacent first waterproofing rolls of a tunnel waterproofing structure according to one embodiment of the present invention.
Fig. 3 shows a tunnel sectional structure diagram of a tunnel waterproofing structure according to an embodiment of the present invention.
Fig. 4 is a schematic top view of the adhesion of the isolation layer of the tunnel waterproofing structure according to an embodiment of the present invention.
Fig. 5 shows a schematic structural view of a waterproof connector of a tunnel waterproofing structure according to an embodiment of the present invention.
Fig. 6 shows a schematic view of an installation position of a waterproof connecting member of a tunnel waterproofing structure according to an embodiment of the present invention.
Fig. 7 shows a flow chart of a method of waterproofing a tunnel according to an embodiment of the present invention.
Description of the reference numerals:
1. a first waterproof roll; 2. a first overlapping edge; 3. a first strip-shaped welding part; 4. a burr portion; 5. a second waterproof roll; 6. a second overlapping edge; 7. a second strip weld; 8. chamfering; 9. an isolation layer; 10. a second liner structure; 11. grouting a channel; 12. a grouting pipe; 13. a main tunnel; 14. transverse holes; 15. a plug-in part; 16. a wing portion; 17. an adhesive layer; 18. and (4) tunneling.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides a tunnel waterproof structure, which comprises:
the first waterproof coiled material is laid on the tunnel arch wall, two adjacent first waterproof coiled materials are overlapped through first overlapping edges of the first waterproof coiled material, the two overlapped first overlapping edges are connected through a first strip-shaped welding part, and the first waterproof coiled material forms a flash part on the outer side of the first strip-shaped welding part;
the second waterproof coiled material is laid on the tunnel inverted arch and is lapped with the second lapping edge of the first waterproof coiled material, the second waterproof coiled material is connected with the second lapping edge through a second strip-shaped welding part, and the second strip-shaped welding part is perpendicular to the first strip-shaped welding part;
the flashing portion between the second overlap edge and the second waterproofing membrane is cut off.
Specifically, the number of the first waterproof rolls is set as required, two adjacent first waterproof rolls are welded through a welding machine after being lapped through the first lapping edges of the two adjacent first waterproof rolls, a first strip-shaped welding part is generated during welding, and a certain distance is inevitably kept between the welding roller and the edge of the first waterproof roll during welding, so that the upper-layer first waterproof roll and the lower-side first waterproof roll at the position both form mutually non-adhesive flash parts on the outer sides of the first strip-shaped welding part, and a water channeling channel is formed between the second lapping edge of the first waterproof roll and the second waterproof roll, so that leakage is easily generated; and this waterproof construction is in overlap edge portion between second overlap edge and the second waterproofing membrane and is amputated for first bar welding portion exposes, has eliminated the scurrying water passageway because of the formation of burr portion when first waterproofing membrane and second waterproofing membrane overlap joint, has improved the water-proof effects of the T shape nodal point department of first waterproofing membrane on the arch wall in the tunnel and the second waterproofing membrane overlap joint formation on the inverted arch in the tunnel.
Optionally, the two first overlapping edges overlapping each other are connected by two first strip-shaped welding portions, and the two first strip-shaped welding portions are parallel to each other.
Specifically, first bar welding part is the hot melt welding seam that the welding machine formed when welding two first waterproofing membrane, when adopting two welding seam welding machines to weld, produces two welding seams.
Optionally, the first overlapping edge is a long-side overlapping edge of the first waterproofing membrane and the second overlapping edge is a short-side overlapping edge of the first waterproofing membrane.
Specifically, the overlap joint limit on the first waterproofing membrane length direction is long limit overlap joint limit, and the overlap joint limit on the first waterproofing membrane width direction is the minor face overlap joint limit.
Optionally, a second overlapping edge is overlapped on the long-side overlapping edge of the second waterproof roll.
Specifically, the overlapping edge in the length direction of the second waterproof roll is a long-edge overlapping edge, and the length direction of the second waterproof roll is perpendicular to the length direction of the first waterproof roll.
Optionally, the second waterproofing membrane is connected with the second overlapping edge through two second strip-shaped welding parts, and the two second strip-shaped welding parts are parallel to each other.
Specifically, the second strip-shaped welding portion is a hot-melting welding seam formed by a welding machine when two first waterproof coiled materials are welded, and a double-welding seam is generated when a double-welding seam welding machine is adopted for welding.
Optionally, the waterproof roll is further provided with an isolation layer, the isolation layer is in a strip shape, and the isolation layer is pasted on one side, close to the tunnel inverted arch, of the first waterproof roll positioned at the top of the tunnel arch wall along the axial direction of the tunnel.
Specifically, because the two-lining structure in the tunnel is difficult to form the dense connection between the two-lining structure and the pre-paved anti-sticking waterproof roll material at the top of the arch wall of the tunnel during construction, when the pre-paved anti-sticking waterproof roll material is adopted as the first waterproof roll material, a multi-point distributed type void adhesion condition is formed between the two-lining structure and the pre-paved anti-sticking waterproof roll material, and when grouting is performed for the multi-point distributed void adhesion condition, not only the number of required grouting pipes is large, but also the grouting effect is difficult to ensure; this waterproof construction sets up the isolation layer in the anti-side that glues of the anti-waterproofing membrane that glues of pre-paving of being in tunnel arch wall top intermediate position for the anti-waterproofing membrane that glues of pre-paving of the position that is in the isolation layer does not bond with two lining structures, forms the slip casting passageway between isolation layer and two lining structures, and the slip casting that can realize the tunnel through the slip casting passageway injection slip casting liquid, the slip casting is convenient, and slip casting is effectual.
It should be noted that grouting of the tunnel is a necessary link in labeling of tunnel construction, and for grouting of the tunnel, a grouting channel is necessarily formed between the two lining structures and the isolation layer.
Optionally, a grouting pipe is arranged in the two lining structures and communicated with the grouting channel.
Specifically, the grouting liquid can be injected into the grouting channel through the grouting pipe.
Optionally, the two-liner structure is provided with a plurality of sections, and each section of the two-liner structure is provided with one grouting pipe.
Specifically, two lining structures of multistage set gradually along the axial in tunnel, and every section only need set up the slip casting pipe on two lining structures and can satisfy the slip casting that two lining structure positions of this section.
Optionally, the pre-laid anti-sticking waterproof roll is a pre-laid anti-sticking waterproof roll with a separation film, the separation film on the pre-laid anti-sticking waterproof roll on the two sides of the vault is cut off, and the separation film in the middle of the vault is reserved to form a separation layer.
Optionally, the pre-laid anti-sticking waterproof roll is a coating type pre-laid anti-sticking waterproof roll.
Optionally, the pre-paved anti-sticking waterproof roll is a pre-paved anti-sticking waterproof roll without an isolation film, and the anti-sticking side of the pre-paved anti-sticking waterproof roll in the middle of the vault is bonded with the isolation layer through a bonding material.
Optionally, the pre-paved anti-sticking waterproof roll is a sand-layer type pre-paved anti-sticking waterproof roll.
Optionally, the grouting channel is filled with grouting filler.
Optionally, the width of the spacer layer is at least 400 mm.
Specifically, the isolation layer does not adhere to the two lining structures, a through-length type grouting channel is formed between the isolation layer and the two lining structures, grouting is facilitated, and a grouting effect can be improved.
Optionally, the secondary lining structure comprises secondary lining concrete.
Specifically, the two-lining structure is formed by pouring two-lining concrete.
Optionally, the second overlapping edge is at the lower side of the second waterproofing membrane, and the edge of the first waterproofing membrane contacting with the second waterproofing membrane is provided with a chamfer.
The tunnel arch wall is characterized in that the stubble throwing pressure of the first waterproof coiled material on the tunnel arch wall is arranged on the lower side of the stubble throwing of the second waterproof coiled material, the edge of the first waterproof coiled material is in contact with the second waterproof coiled material more smoothly when the first waterproof coiled material is in lap joint with the second waterproof coiled material due to the arrangement of the chamfer, the exposed first strip-shaped welding part can be connected with the second strip-shaped welding part, and the generation of the bulge at the lap joint position is avoided.
Optionally, one side of the first waterproof roll close to the inside of the tunnel is provided with two lining structures, and a grouting channel is formed between the two lining structures and the isolation layer.
Optionally, the tunnel includes main tunnel and cross bore, the handing-over position of main tunnel and cross bore is provided with waterproof connecting piece, waterproof connecting piece includes grafting portion and alar part, grafting portion is convex, grafting portion inserts and establishes in the cross bore and can laminate with the hunch wall inner wall of cross bore, the alar part sets up in the periphery of grafting portion one end, the alar part inserts the laminating with the hunch wall inner wall of main tunnel behind the cross bore at grafting portion, the internal peripheral surface of grafting portion and alar part are kept away from one side of grafting portion and are provided with the adhesive layer on the surface.
It is specific, through grafting portion and cross bore plug-in connection, through the inner wall laminating of alar part and the hunch wall of main tunnel, one side that grafting portion was kept away from to the inner peripheral surface of grafting portion and alar part all is provided with the adhesive layer on the surface, just can directly paste waterproofing membrane on grafting portion when paving in the cross bore and pasting waterproofing membrane like this, just can directly paste waterproofing membrane on the alar part when paving in main tunnel and pasting waterproofing membrane, the paving construction of the waterproofing membrane of the cross bore and main tunnel hookup location of not only being convenient for, also can provide the water-proof effects of this position.
Optionally, the waterproof connector is made of a polymer material.
Specifically, this water-proof connecting piece of macromolecular material itself possesses water-proof effects, and the waterproofing membrane who pastes is spread in the waterproofing membrane who pastes and the main tunnel in the cross tunnel in realizing by this water-proof connecting piece is connected at the position of being connected of cross tunnel and main tunnel, has guaranteed the water-proof effects at this position when being convenient for construct.
Optionally, the wing part is sheet-shaped, and the shape of the surface of one side of the wing part, which is far away from the inserting part, is matched with the shape of the inner wall of the arch wall of the main tunnel.
Specifically, the alar part is for being connected the slice that the position inner wall radian set up along with the shape for main tunnel and cross bore, and the alar part can be thinner relatively, does benefit to and carries out level and smooth connection with the waterproofing membrane who lays in the main tunnel, and grafting portion also is convex slice, and the wall thickness of grafting portion is also thinner relatively, does benefit to and carries out level and smooth connection with the waterproofing membrane who lays in the cross bore.
Optionally, a separation film is disposed outside the adhesive layer.
Specifically, the adhesive layer and the isolating film on the adhesive layer can be prevented from being damaged or dirtied in the installation of the waterproof connecting piece, and the waterproof coiled material can be conveniently connected with the waterproof connecting piece through the adhesive layer.
Optionally, the material of the waterproof connector for the tunnel is at least one of PE material, EPDM material, TPO material, PVC material, EVA material, ECB material.
Optionally, the material of the adhesive layer is at least one of SBC hot melt pressure sensitive adhesive, polyisobutylene-based adhesive, butyl-based adhesive, and acrylic-based adhesive.
Optionally, the shape of the spigot portion matches the shape of the inner side of the arch wall portion of the transverse bore.
Specifically, the shape of the insertion part is arranged along the shape of the inner side of the arch wall part of the transverse hole, so that the insertion part is conveniently connected with the inner side of the arch wall part of the transverse hole in a waterproof manner through the hot-melt gasket.
Optionally, the wing portion is shaped to fit inside the arch portion of the main tunnel.
Specifically, the shape of alar part sets up along with the shape for the inboard shape of the arch wall part of main tunnel, is convenient for realize through the hot melt gasket that alar part and the inboard waterproof nature of the arch wall part of main tunnel are connected.
Optionally, a part of the first waterproof coiled material laid on the arch wall of the main tunnel, which is close to the transverse tunnel, is adhered to the wing part, and a part of the first waterproof coiled material laid on the arch wall of the transverse tunnel, which is close to the main tunnel, is adhered to the inserting part.
Optionally, the insertion part is connected with the arch wall of the transverse hole through a first hot-melt gasket, and the wing part is connected with the arch wall of the main tunnel through a second hot-melt gasket.
Specifically, this waterproof connecting piece realizes being connected with the waterproof nature of cross cut and main tunnel through first hot melt gasket and second hot melt gasket.
The invention also provides a tunnel waterproof method, based on the tunnel waterproof structure, the waterproof method comprises the following steps:
paving a first waterproof roll and a second waterproof roll on the tunnel arch wall and the tunnel inverted arch respectively;
welding adjacent first waterproof coiled materials through a first strip-shaped welding part, and forming a flash part on the outer side of the first strip-shaped welding part;
cutting off a part of flash part close to the second waterproof coiled material;
and welding the first waterproof coiled material with the cut-off part of the flash part with a second waterproof coiled material through a second strip-shaped welding part.
Optionally, the method further comprises:
and arranging an isolation layer on the top of the tunnel arch wall.
Optionally, a chamfer is cut from the edge of the first waterproof roll from which part of the flash part has been cut, and then the first waterproof roll after the chamfer is cut is welded with the second waterproof roll.
Optionally, after the isolation layer is adhered, a second lining structure is constructed on one side of the first waterproof coiled material close to the inside of the tunnel, so that a grouting channel is formed between the second lining structure and the isolation layer.
Optionally, the tunnel comprises a main tunnel and a transverse tunnel, and before the first waterproof coiled material is laid on the arch wall of the main tunnel and the arch wall of the transverse tunnel, a waterproof connecting piece is installed at the joint of the main tunnel and the transverse tunnel;
the waterproof connecting piece comprises an inserting part and a wing part, the inserting part is arc-shaped, the wing part is arranged on the periphery of one end of the inserting part, and an adhesive layer is arranged on the inner peripheral surface of the inserting part and the surface of one side of the wing part, which is far away from the inserting part;
the inserting part is inserted into the transverse hole to be attached to the inner wall of the arch wall of the transverse hole, and the wing part is attached to the inner wall of the arch wall of the main tunnel after the inserting part is inserted into the transverse hole.
Optionally, when the first waterproof coiled material is laid in the main tunnel, adhering the part, close to the transverse hole, of the first waterproof coiled material to the wing part; when the first waterproof coiled material is laid in the transverse hole, the part, close to the main tunnel, of the first waterproof coiled material is adhered to the inserting part.
Examples
As shown in fig. 1 to 7, the present invention provides a tunnel waterproofing structure, including:
the waterproof structure comprises first waterproof rolls 1, a tunnel arch wall, two adjacent first waterproof rolls 1, a first strip-shaped welding part 3 and a second strip-shaped welding part 4, wherein the first waterproof rolls 1 are laid on the tunnel arch wall, the two adjacent first waterproof rolls 1 are overlapped through first overlapping edges 2 of the first waterproof rolls, the two overlapped first overlapping edges 2 are connected through the first strip-shaped welding part 3, and the first waterproof rolls 1 form the flash parts 4 on the outer sides of the first strip-shaped welding parts 3;
the second waterproof coiled material 5 is laid on the tunnel inverted arch and is lapped with the second lapping edge 6 of the first waterproof coiled material 1, the second waterproof coiled material 5 is connected with the second lapping edge 6 through a second strip-shaped welding part 7, and the second strip-shaped welding part 7 is perpendicular to the first strip-shaped welding part 3;
the flash 4 between the second overlapping edge 6 and the second waterproofing membrane 5 is cut off.
In this embodiment, still include isolation layer 9, isolation layer 9 is the strip, and isolation layer 9 pastes along the axial in tunnel one side that is close to the tunnel invert at first waterproofing membrane 1 at tunnel arch wall top.
In this embodiment, the second overlapping edge 6 is on the lower side of the second waterproofing membrane 5, and the edge of the first waterproofing membrane 1 contacting with the second waterproofing membrane 5 is provided with a chamfer 8.
In this embodiment, the first waterproofing membrane 1 is provided with a second lining structure 10 on the side close to the inside of the tunnel, and a grouting channel 11 is formed between the second lining structure 10 and the isolation layer 9.
In this embodiment, tunnel 18 includes main tunnel 13 and cross bore 14, the handing-over position of main tunnel 13 and cross bore 14 is provided with waterproof connecting piece, waterproof connecting piece includes grafting portion 15 and alar part 16, grafting portion 15 is arc, grafting portion 15 is inserted and is established in cross bore 14 and can be laminated with the arch wall inner wall of cross bore 14, alar part 16 sets up in the periphery of grafting portion 15 one end, alar part 16 is laminated with the arch wall inner wall of main tunnel 13 after grafting portion 15 inserts cross bore 14, the internal peripheral surface of grafting portion 15 and alar part 16 keep away from one side surface of grafting portion 15 and are provided with adhesive layer 17.
In this embodiment, a portion of the first waterproofing membrane 1 laid on the arch wall of the main tunnel 13 near the lateral hole 14 is adhered to the wing portion 16, and a portion of the first waterproofing membrane 1 laid on the arch wall of the lateral hole 14 near the main tunnel 13 is adhered to the inserting portion 15.
The invention also provides a tunnel waterproof method, based on the tunnel waterproof structure, the waterproof method comprises the following steps:
respectively paving a first waterproof coiled material 1 and a second waterproof coiled material 5 on a tunnel arch wall and a tunnel inverted arch;
welding adjacent first waterproof coiled materials 1 through a first strip-shaped welding part 3, and forming a flash part 4 on the outer side of the first strip-shaped welding part 3;
cutting off a part of the flash portion 4 near the second waterproof roll 5;
the first waterproof roll 1 from which the flash part 4 is partially cut is welded to the second waterproof roll 5 by the second strip-shaped weld 7.
Optionally, the method further comprises:
and an isolation layer 9 is arranged on the top of the tunnel arch wall.
In this embodiment, a chamfer 8 is cut from the edge of the first waterproofing membrane 1 from which a part of the flash portion 4 has been cut, and the first waterproofing membrane 1 from which the chamfer 8 has been cut is welded to the second waterproofing membrane 5.
In this embodiment, after the isolation layer 9 is adhered, a second lining structure 10 is constructed on the side of the first waterproofing membrane 1 near the inside of the tunnel, so that a grouting channel 11 is formed between the second lining structure 10 and the isolation layer 9.
In this embodiment, the tunnel 18 includes a main tunnel 13 and a lateral hole 14, and before the first waterproof roll 1 is laid on the arch wall of the main tunnel 13 and the arch wall of the lateral hole 14, a waterproof connecting piece is installed at the joint of the main tunnel 13 and the lateral hole 14;
the waterproof connecting piece comprises an inserting part 15 and a wing part 16, the inserting part 15 is arc-shaped, the wing part 16 is arranged on the periphery of one end of the inserting part 15, and an adhesive layer 17 is arranged on the inner peripheral surface of the inserting part 15 and the surface of one side of the wing part 16, which is far away from the inserting part 15;
the inserting part 15 is inserted into the transverse hole 14 to be attached to the inner wall of the arch wall of the transverse hole 14, and the wing part 16 is attached to the inner wall of the arch wall of the main tunnel 13 after the inserting part 15 is inserted into the transverse hole 14.
In the embodiment, when the first waterproof roll 1 is laid in the main tunnel 13, the part of the first waterproof roll 1 close to the transverse hole 14 is adhered to the wing part 16; when the first waterproof roll 1 is laid in the transverse hole 14, the part of the first waterproof roll 1 close to the main tunnel 13 is adhered to the inserting part 15.
In summary, the tunnel waterproofing method provided by the present invention is based on the above-mentioned tunnel waterproofing structure, and during construction, the construction method using pre-paved anti-adhesive coiled material and pre-paved anti-adhesive is taken as an example: the first waterproof roll 1 and the second waterproof roll 5 are both pre-paved and anti-sticking waterproof rolls. Firstly, installing a waterproof connecting piece at the joint part of the main tunnel 13 and the transverse tunnel 14, inserting the inserting part 15 into the transverse tunnel 14, fixing the waterproof connecting piece at the joint part of the transverse tunnel 14 and the main tunnel 13 through a first hot-melt gasket and a second hot-melt gasket, and tearing off an isolating film on the adhesive layer 17 to expose the adhesive layer 17; then, pre-paving a first waterproof coiled material 1 on the arch wall of the main tunnel 13 and the arch wall of the transverse hole 14, pre-paving a second waterproof coiled material 5 on the inverted arch of the main tunnel 13 and the inverted arch of the transverse hole 14, and sticking the part, close to the transverse hole 14, of the first waterproof coiled material 1 on the wing part 16 when the first waterproof coiled material 1 is paved in the main tunnel 13; when the first waterproof roll material 1 is laid in the transverse hole 14, the part of the first waterproof roll material 1 close to the main tunnel 13 is stuck on the inserting part 15; two adjacent first waterproof coiled materials 1 are welded through the first overlap joint edges 2 of the two first waterproof coiled materials by a double-weld-seam welding machine, and two first strip-shaped welding parts 3 and two flashing parts 4 which are parallel to each other are generated during welding; cutting off part of the flash part 4 close to the second waterproof coiled material 5, cutting a chamfer 8 from the edge of the first waterproof coiled material 1 from which part of the flash part 4 has been cut off, and welding two second strip-shaped welding parts 7 which are parallel to each other and formed by the first waterproof coiled material 1 after the chamfer 8 is cut off with the second waterproof coiled material 5 through a double-welding-seam welding machine; then, the isolation layer 9 is arranged at the middle position of the top of the arch wall of the main tunnel 13 and the middle position of the top of the arch wall of the transverse hole 14, and the pre-paved anti-sticking waterproof roll is adopted, so that the strip-shaped isolation layer 9 structure is cut out firstly when the release film on the pre-paved anti-sticking waterproof roll is removed, and then the release film except for being used as the isolation layer 9 is removed; finally, constructing a two-lining structure 10, wherein due to the existence of the isolation layer 9, the pre-laid anti-sticking waterproof coiled material at the position of the isolation layer 9 is not stuck with the two-lining structure 10, and a grouting channel 11 is formed between the isolation layer 9 and the two-lining structure 10, so that grouting is facilitated and the grouting effect is improved; the two-lining structure 10 is formed by casting two-lining concrete and constructed in sections, a grouting pipe 12 is buried in each section of the two-lining structure 10, and grouting construction of the tunnel vault can be completed by injecting grouting filler into the grouting pipe 12.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. The utility model provides a tunnel waterproof construction which characterized in that, this waterproof construction includes:
the first waterproof coiled material is laid on the tunnel arch wall, two adjacent first waterproof coiled materials are overlapped through first overlapping edges of the first waterproof coiled material, the two overlapped first overlapping edges are connected through a first strip-shaped welding part, and a flash part is formed on the outer side of the first strip-shaped welding part by the first waterproof coiled material;
the second waterproof coiled material is laid on the tunnel inverted arch and is lapped with the second lapping edge of the first waterproof coiled material, the second waterproof coiled material is connected with the second lapping edge through a second strip-shaped welding part, and the second strip-shaped welding part is perpendicular to the first strip-shaped welding part;
the flash portion between the second overlapping edge and the second waterproofing membrane is cut off.
2. The tunnel waterproofing structure according to claim 1, further comprising a strip-shaped insulating layer adhered to a side of the first waterproofing membrane on the top of the tunnel arch wall near the tunnel invert in the axial direction of the tunnel.
3. The tunnel waterproofing structure according to claim 2, wherein a side of the first waterproofing membrane adjacent to the inside of the tunnel is provided with a second lining structure, and a grouting passage is formed between the second lining structure and the insulating layer.
4. The tunnel waterproof structure according to claim 1, wherein the tunnel comprises a main tunnel and a cross tunnel, a waterproof connecting member is arranged at a joint of the main tunnel and the cross tunnel, the waterproof connecting member comprises an inserting portion and a wing portion, the inserting portion is arc-shaped, the inserting portion is inserted into the cross tunnel and can be attached to an inner wall of an arch wall of the cross tunnel, the wing portion is arranged on the outer periphery of one end of the inserting portion, the wing portion is attached to the inner wall of the arch wall of the main tunnel after the inserting portion is inserted into the cross tunnel, and an adhesive layer is arranged on the inner peripheral surface of the inserting portion and a side surface of the wing portion, which is far away from the inserting portion.
5. The tunnel waterproofing structure according to claim 4, wherein a portion of the first waterproofing membrane laid on the arch wall of the main tunnel adjacent to the lateral hole is bonded to the wing portion, and a portion of the first waterproofing membrane laid on the arch wall of the lateral hole adjacent to the main tunnel is bonded to the inserting portion.
6. A tunnel waterproofing method based on the tunnel waterproofing structure according to any one of claims 1 to 5, wherein the waterproofing method comprises:
paving a first waterproof roll and a second waterproof roll on a tunnel arch wall and a tunnel inverted arch respectively;
welding the adjacent first waterproof coiled materials through a first strip-shaped welding part, and forming a flash part on the outer side of the first strip-shaped welding part;
cutting off a part of the flash part close to the second waterproof coiled material;
and welding the first waterproof coiled material with the cut-off part of the flash part with the second waterproof coiled material through a second strip-shaped welding part.
7. The method of claim 6, further comprising:
and arranging an isolation layer on the top of the tunnel arch wall.
8. The method of claim 7, wherein after the spacer is adhered, a second lining structure is constructed on a side of the first waterproofing membrane adjacent to the inside of the tunnel, so that a grouting passage is formed between the second lining structure and the spacer.
9. The method for waterproofing a tunnel according to claim 6, wherein the tunnel comprises a main tunnel and a lateral hole, and a waterproof connecting member is installed at a junction between the main tunnel and the lateral hole before the first waterproof roll is laid on the arch wall of the main tunnel and the arch wall of the lateral hole;
the waterproof connecting piece comprises an inserting part and a wing part, the inserting part is arc-shaped, the wing part is arranged on the periphery of one end of the inserting part, and an adhesive layer is arranged on the inner peripheral surface of the inserting part and the surface of one side, far away from the inserting part, of the wing part;
and inserting the inserting part into the transverse hole to enable the inserting part to be attached to the inner wall of the arch wall of the transverse hole, and attaching the wing part to the inner wall of the arch wall of the main tunnel after the inserting part is inserted into the transverse hole.
10. The method of claim 9, wherein when the first waterproofing membrane is laid in the main tunnel, the portion of the first waterproofing membrane close to the crosshole is adhered to the wing portion; when the first waterproof roll is laid in the transverse hole, the part, close to the main tunnel, of the first waterproof roll is adhered to the inserting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210487356.7A CN114876528A (en) | 2022-05-06 | 2022-05-06 | Tunnel waterproof structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210487356.7A CN114876528A (en) | 2022-05-06 | 2022-05-06 | Tunnel waterproof structure and method |
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| Publication Number | Publication Date |
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| CN114876528A true CN114876528A (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210487356.7A Pending CN114876528A (en) | 2022-05-06 | 2022-05-06 | Tunnel waterproof structure and method |
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| Country | Link |
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| CN (1) | CN114876528A (en) |
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- 2022-05-06 CN CN202210487356.7A patent/CN114876528A/en active Pending
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