EP2492438A2 - Procédé d'application temporaire d'une bande d'étanchéité dans des voûtes de tunnel et bande d'étanchéité correspondant - Google Patents

Procédé d'application temporaire d'une bande d'étanchéité dans des voûtes de tunnel et bande d'étanchéité correspondant Download PDF

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Publication number
EP2492438A2
EP2492438A2 EP20120001038 EP12001038A EP2492438A2 EP 2492438 A2 EP2492438 A2 EP 2492438A2 EP 20120001038 EP20120001038 EP 20120001038 EP 12001038 A EP12001038 A EP 12001038A EP 2492438 A2 EP2492438 A2 EP 2492438A2
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EP
European Patent Office
Prior art keywords
adhesive film
geomembrane
layer
geotextile
tunnel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20120001038
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German (de)
English (en)
Inventor
Paul Vogt
Detlev De Vries
Sven Ktahberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GSE Lining Technology GmbH
Original Assignee
GSE Lining Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GSE Lining Technology GmbH filed Critical GSE Lining Technology GmbH
Publication of EP2492438A2 publication Critical patent/EP2492438A2/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries

Definitions

  • the invention relates to a method for temporary attachment of a geomembrane made of thermoplastic material in a tunnel vault, the tunnel wall is provided with a layer of geotextile material, in particular a geotextile fleece, wherein the geomembrane is placed in sections and in the circumferential direction of the tunnel vault to the tunnel wall.
  • the invention also relates to a geomembrane for carrying out the method, in particular for tunnel vaults.
  • the raw rock walls of the tunnel vault are first provided with a shotcrete layer. Then a waterproofing membrane made of plastic is applied, on which the inner concrete is introduced with steel reinforcements. The geomembrane protects the interior concrete and the tunnel from oppressive water.
  • the geomembrane is essentially completely waterproof. Above all, the seams between the geomembranes cause problems here. There is also the risk that the geomembrane is damaged when introducing the reinforcement for the inner concrete.
  • the waterproofing membrane When creating the tunnel wall, the waterproofing membrane must be kept suspended on the shotcrete layer until the inner concrete layer has been incorporated. Then the sealing sheet is between the shotcrete layer and the inner concrete layer and is held by this.
  • geotextile layer is often a polypropylene non-woven fabric.
  • the geomembrane is often made of polyethylene.
  • a direct bonding is not readily possible here. It is therefore still out of the DE 10 2004 024 472 B4 known to connect a provided with a geotextile plastic sheet by Versch Seriesung with a located on the tunnel wall geotextile. This process is very complicated.
  • the invention has for its object to improve the method described above so that the laying of the geomembrane is easier to introduce the inner concrete. Also, the geomembrane when mounting no longer or hardly any thermal load, so that a full-surface sealing of the tunnel wall without damaged geomembrane is possible.
  • the invention proposes that the sealing web is at least partially coated on its side facing the tunnel wall with an adhesive film, that the geomembrane is heated prior to application to the geotextile layer at least in the region of the adhesive film, so that the adhesive film at least partially is plasticized, and that the sealing sheet is pressed with the plasticized adhesive film against the wall.
  • the geotextile layer is thus pressed into the molten adhesive film, so that a solid mechanical bond between geomembrane and geotextile layer is produced. This is sufficient to keep the geomembrane until the introduction of the inner concrete to the geotextile layer.
  • the geomembrane Since only the adhesive film is heated and melted by heating, the geomembrane is not thermally stressed. Subsequent weak points of the geomembrane are reliably avoided.
  • a particular advantage is that the geomembrane can be attached to the tunnel wall in this way almost without laborious manual work.
  • the heating of the adhesive film can be done by machine when unwinding the geomembrane from a supply roll. Then the geomembrane is pressed against the geotextile layer. This can be done in the course of a working movement of the work platform in tunneling. Since only the adhesive film is melted, plasticized or activated, this cools quickly after pressing against the geotextile layer, so that immediately the desired hold is guaranteed.
  • the adhesive film is applied in strips in the longitudinal extent of the geomembrane to the geomembrane. This has the advantage that the heating of the adhesive film in the unwinding direction of the geomembrane can take place continuously. It is achieved a sufficiently large adhesive surface.
  • the adhesive film is applied in the manufacture of the geomembrane on this. Then, on site, ie in the tunnel, only the geomembrane needs to be heated at least in the area of the adhesive foil. Subsequently, the sealing sheet is pressed with the thus activated adhesive film to the geotextile layer on the tunnel wall.
  • pressure rollers can be provided which press the geomembrane on the side facing away from the tunnel wall in the region of the adhesive foil against the tunnel wall.
  • the heating can be done by means of hot air or radiant heaters. It can thus be a localized area of the geomembrane and in particular only the Bonding foil to be heated. A further thermal load of the geomembrane is hereby avoided. It is then also expedient if the temperature is selected so that the adhesive film is plasticized only on its free surface. This also reliably avoids the risk of thermal overstressing of the geomembrane.
  • the temperature at the adhesive film may be in the activated state, for example, 100 ° C to 130 ° C.
  • the material of the adhesive film can be adapted to the material of the geotextile layer on the one hand and the geomembrane on the other hand. It is therefore possible to connect two per se non-connectable plastics with such an adhesive film.
  • the geomembrane may consist of a plastic, for example PVC or polyethylene.
  • the sealing sheet facing layer of the adhesive film then consists of a compatible with this plastic material.
  • the opposite layer of the adhesive film consists of a plastic which is connectable to the material on the wall to be clad.
  • the wall material is often a geotextiles, for example a fleece made of polypropylene.
  • the geotextile layer consists of a polypropylene plastic, that the geomembrane consists of a polyethylene plastic, and that the adhesive film has at least two layers, of which the geomembrane facing layer consists of a polyethylene plastic and the facing in the mounted position of the geotextile layer consists of a polypropylene plastic.
  • the polypropylene layer of the adhesive film can be well connected to the geotextile layer.
  • the other layer of polyethylene can be firmly connected to the geomembrane. It ensures a secure hold of the geomembrane to the geotextile layer.
  • the geomembrane be provided, at least on its side facing the installed wall of the tunnel wall, at least in regions with an adhesive film which can be connected to a geotextile layer on the tunnel wall. It is particularly expedient if the adhesive film is mounted in strips in the longitudinal extent of the geomembrane on this. This reduces the manufacturing costs.
  • the strip-shaped arrangement is also sufficient to hold the geomembrane sufficiently firmly to the geotextile layer previously attached to the tunnel wall. But it can also be provided that the adhesive film is distributed over the entire surface or plate-shaped distributed on the geomembrane.
  • the geomembrane consists of a polyethylene plastic
  • the adhesive film has at least two layers, of which the layer facing the geomembrane consists of a polyethylene plastic.
  • the adhesive film can be applied well during the production of the geomembrane and firmly connected to this.
  • the other, initially free side of the adhesive film may consist of a material that is formed according to the material with which the geomembrane is to be connected. It can be provided that the adhesive film on its free, in the mounted position of Tunnelwandung facing side has a layer of a polypropylene plastic. Furthermore, a bonding layer may be present between the layers of the adhesive film.
  • FIG. 1 roughly schematically illustrated device 10 for lining a tunnel wall 11 with a sealing sheet 12 has an arm 13 which is mounted in the drawing plane in the direction of the arrow 14 and herverschwenkbar on a chassis 15.
  • the length of the arm 13 can be changed in the radial direction of the approximately part-circular cross section of the tunnel arch.
  • the pivot point 16 of the arm 13 along a chord in the direction of the arrow 17 is slidably mounted on the chassis 15 back and forth. With such an arrangement, it is possible that the front portion 18 of the arm 13 can follow the course of the tunnel wall 11 at a predetermined distance.
  • the chassis 15 is also movable in the longitudinal direction of the tunnel on the tunnel floor 36. It is thus possible to extend the entire tunnel wall with the arm 13.
  • Such a tunnel work platform is for example, offered by Bunorm AG, CH-4129 Aarwangen and therefore needs no further explanation.
  • a supply roll 19 for the geomembrane 12 is rotatably mounted.
  • a pressure roller 21 through which the unwound geomembrane 12 can be pressed against the tunnel wall 11.
  • the tunnel wall 11 has been provided prior to laying the geomembrane 12 with a shotcrete layer 22 which has been applied to the raw rock 23.
  • a geotextile layer 24 On the inside of the shotcrete layer 22 is a geotextile layer 24, in particular a nonwoven layer, which is anchored in a conventional manner with holding plates 33 in the shotcrete layer 22. The geomembrane 12 is thus pressed against the geotextile layer 24.
  • the geomembrane 12 has on its mounting side 25, which faces the tunnel wall 11, an adhesive film.
  • the arrangement is such that a plurality of adhesive film strips 26 extending in the longitudinal direction of the sealing sheet 12 are provided.
  • the adhesive film 26 has at least two layers, of which the sealing web 12 facing layer 27 is well connected to the material of the geomembrane. It can be provided, for example, that the geomembrane and this layer 27 are made of polyethylene. The adhesive film 26 is therefore firmly connected to the geomembrane 12.
  • the layer 28 of the adhesive film 26 facing away from the geomembrane 12 is made of a material which is readily bondable to the geotextile layer 24 on the tunnel wall. It is envisaged that the adhesive film is heated and thus activated, in which it is melted. In In this state, the adhesive film 26 is pressed with the geomembrane 12 in the geotextile layer 24 by means of the pressure roller 21. The fibers of the nonwoven layer 24 are pressed into the plasticized layer 28 of the adhesive sheet 26 and firmly anchored there after cooling. This type of attachment is sufficient to keep the geomembrane 12 at least as long to the tunnel wall 11 until the in FIG. 3 only dashed lines indicated inner concrete layer 29 has been applied. In the finished installed layer, the geomembrane 12 is thus held between the shotcrete layer 22 and the inner concrete layer 29. In this position, the geomembrane 12 no longer needs to be held with the adhesive sheet 26 on the geotextile layer 24.
  • the geomembrane is heated on its mounting side 25 by means of a heater blower 30 at least in the region of the adhesive film 26.
  • the temperature of the exiting hot air is chosen so that the free layer 28 of the adhesive sheet 26 plasticized and thus activated.
  • the geomembrane 12 is pressed firmly onto the geotextile layer 24.
  • the adhesive film or its free layer 28 has cooled down to such an extent that the fibers of the nonwoven 24 which have penetrated into the layer are firmly anchored. This achieves the desired firm hold of the geomembrane web on the geotextile web 24 and thus on the tunnel wall 11.
  • the hot air can also be supplied continuously.
  • the pressure rollers 21 are arranged in an area over the strip of adhesive film 26 on the free side 31 of the geomembrane on the working platform. This ensures that the contact pressure acts well on the strip-shaped adhesive film 26, so that it is firmly pressed into the nonwoven 24.
  • the pressure rollers 21 are carried along via a support arm 34 with the arm 13 in the working direction in the desired position in the working direction 20 behind the supply roll 19.
  • the hot air nozzle 30 is located in the working direction in front of the point of contact of the geomembrane 12 with the geotextile layer 24 and can also be carried by a holding device, not shown, with the arm 13. the hot air therefore strömit in the gusset 35 between the tunnel wall 11 and the geomembrane 12.
  • the hot air nozzle 30 or nozzles may be sized and aligned so that only the outer layer 28 of the adhesive film 26 is melted. A thermal load on the geomembrane is reliably avoided.
  • the pressure rollers 21 are in the axial direction, ie in a direction perpendicular to the plane in FIG. 1 attached to the work platform so that they can be placed over the strip 26.
  • the pressure rollers may be resilient in the radial direction and, for example, have pneumatic tires.
  • the support arm 34 of the pressure rollers may be held under resilient bias.
  • the geotextile layer can be, for example, a fleece of polypropylene.
  • the thickness of this layer 24 is preferably more than 5.0 mm, so that the unevenness of the shotcrete 22 can be well balanced. Mechanical damage to the geomembrane 12 is then not to be feared.
  • the geomembrane 12 is preferably made of polyethylene.
  • the thickness is usually 1.5 mm to 5.0 mm depending on the application.
  • the adhesive film 26 then has two layers, of which the sealing web 12 facing layer 27 is also made of polyethylene. Then the adhesive film can already be firmly connected to the geomembrane 12 during the production of the geomembrane at the factory.
  • the then free layer 28 of the adhesive sheet 26 is made of polypropylene so that it can be well bonded to the geotextile layer 24 after activation of the adhesive sheet by heating.
  • the adhesive film may have a thickness of less than 2.0 mm and preferably less than 1.0 mm. It has been shown that this strength is sufficient to ensure the desired hold of the geomembrane on the tunnel wall.
  • the width of the geomembrane 12 may be, for example, up to 4.0 m. Here, four to five strips of the adhesive film can be provided and be sufficient.
  • the width of the adhesive film can be 0.1 to 0.2 times the width of the sealing web and thus at a 4 m wide sealing membrane about 0.4 m to 0.8 m.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (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)
EP20120001038 2011-02-22 2012-02-16 Procédé d'application temporaire d'une bande d'étanchéité dans des voûtes de tunnel et bande d'étanchéité correspondant Withdrawn EP2492438A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110012046 DE102011012046A1 (de) 2011-02-22 2011-02-22 Verfahren zum temporären Anbringen einer Dichtungsbahn in Tunnelgewölben und Dichtungsbahn dafür

Publications (1)

Publication Number Publication Date
EP2492438A2 true EP2492438A2 (fr) 2012-08-29

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EP20120001038 Withdrawn EP2492438A2 (fr) 2011-02-22 2012-02-16 Procédé d'application temporaire d'une bande d'étanchéité dans des voûtes de tunnel et bande d'étanchéité correspondant

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EP (1) EP2492438A2 (fr)
DE (1) DE102011012046A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH710038A1 (de) * 2014-08-29 2016-02-29 Charly Pfammatter Verfahren zum Erstellen einer Dichtungsfläche im Bereich der Decke und/oder der Seitenbereiche eines Raumes.
WO2016146373A1 (fr) * 2015-03-13 2016-09-22 Heindl Energy Gmbh Bande d'étanchéité servant à fabriquer un joint d'étanchéité pour un accumulateur d'énergie potentielle et procédé servant à monter un joint d'étanchéité issu de bandes d'étanchéité pour un accumulateur d'énergie potentielle
CN106948847A (zh) * 2017-05-18 2017-07-14 江苏卓昌隧道设备科技有限公司 一种用于隧道防水层铺设的台车
CN107575251A (zh) * 2017-10-13 2018-01-12 湖南五新隧道智能装备股份有限公司 防水施工用可移动臂组及包含此臂组的防水施工用台车
CN109296388A (zh) * 2018-09-26 2019-02-01 苏群健 一种轨道交通用隧道边端封闭装置
CN109667605A (zh) * 2019-02-20 2019-04-23 中铁隧道集团三处有限公司 一种仿人工铺设隧道二衬钢筋网的施工方法及铺设台架

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0607854B1 (fr) 1993-01-22 1999-04-07 agru Alois Gruber G.m.b.H. Plaque de garniture interne pour ouvrages en béton à couche signal et réflecteur
DE19925573C2 (de) 1999-06-04 2003-04-30 Gse Lining Technology Gmbh Dichtungsbahn
DE102004024472A1 (de) 2004-05-14 2005-12-08 Mueg Mitteldeutsche Umwelt- Und Entsorgung Gmbh Verfahren und Vorrichtung zum Abdichten der Wandungen von Ingenieurbauwerken aus Beton, insbesondere von unterirdischen Tunnelbauwerken
EP1728624B1 (fr) 2005-06-01 2010-06-09 Profol Kunststoffe GmbH Feuille multicouche avec des effets optiques et procédés de fabrication associé

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0607854B1 (fr) 1993-01-22 1999-04-07 agru Alois Gruber G.m.b.H. Plaque de garniture interne pour ouvrages en béton à couche signal et réflecteur
DE19925573C2 (de) 1999-06-04 2003-04-30 Gse Lining Technology Gmbh Dichtungsbahn
DE102004024472A1 (de) 2004-05-14 2005-12-08 Mueg Mitteldeutsche Umwelt- Und Entsorgung Gmbh Verfahren und Vorrichtung zum Abdichten der Wandungen von Ingenieurbauwerken aus Beton, insbesondere von unterirdischen Tunnelbauwerken
EP1728624B1 (fr) 2005-06-01 2010-06-09 Profol Kunststoffe GmbH Feuille multicouche avec des effets optiques et procédés de fabrication associé

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH710038A1 (de) * 2014-08-29 2016-02-29 Charly Pfammatter Verfahren zum Erstellen einer Dichtungsfläche im Bereich der Decke und/oder der Seitenbereiche eines Raumes.
WO2016146373A1 (fr) * 2015-03-13 2016-09-22 Heindl Energy Gmbh Bande d'étanchéité servant à fabriquer un joint d'étanchéité pour un accumulateur d'énergie potentielle et procédé servant à monter un joint d'étanchéité issu de bandes d'étanchéité pour un accumulateur d'énergie potentielle
CN106948847A (zh) * 2017-05-18 2017-07-14 江苏卓昌隧道设备科技有限公司 一种用于隧道防水层铺设的台车
CN107575251A (zh) * 2017-10-13 2018-01-12 湖南五新隧道智能装备股份有限公司 防水施工用可移动臂组及包含此臂组的防水施工用台车
CN109296388A (zh) * 2018-09-26 2019-02-01 苏群健 一种轨道交通用隧道边端封闭装置
CN109667605A (zh) * 2019-02-20 2019-04-23 中铁隧道集团三处有限公司 一种仿人工铺设隧道二衬钢筋网的施工方法及铺设台架

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