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EP1538302B1 - Procédé pour remplir des espaces vides localisés hors de la paroie d'un tunnel - Google Patents

Procédé pour remplir des espaces vides localisés hors de la paroie d'un tunnel Download PDF

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Publication number
EP1538302B1
EP1538302B1 EP04028102A EP04028102A EP1538302B1 EP 1538302 B1 EP1538302 B1 EP 1538302B1 EP 04028102 A EP04028102 A EP 04028102A EP 04028102 A EP04028102 A EP 04028102A EP 1538302 B1 EP1538302 B1 EP 1538302B1
Authority
EP
European Patent Office
Prior art keywords
tunnel
ground
annular gap
filling
soil
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.)
Expired - Lifetime
Application number
EP04028102A
Other languages
German (de)
English (en)
Other versions
EP1538302A1 (fr
Inventor
Gereon Behnen
Hans-Walter Gross
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.)
Dywidag Bau GmbH
Original Assignee
Dywidag Bau 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 Dywidag Bau GmbH filed Critical Dywidag Bau GmbH
Publication of EP1538302A1 publication Critical patent/EP1538302A1/fr
Application granted granted Critical
Publication of EP1538302B1 publication Critical patent/EP1538302B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/13—Devices for removing or hauling away excavated material or spoil; Working or loading platforms using hydraulic or pneumatic conveying means
    • 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
    • E21D11/04—Lining with building materials
    • E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete

Definitions

  • the invention relates to a method for filling or pressing cavities outside the clear tunnel tube of a tunnel driven in tunneling tunnel or tunnel, in particular the annular gap between the tunnel lining and the upcoming soil.
  • the grout is pumpable and can be introduced with targeted pressurization and volume control. Sufficient distribution of the grout within the cavity must be ensured by sufficient fluidity. If the grout is provided with binders, their hardening time must be adjusted so that it does not prematurely hardened during short interruptions of Verpressvorgangs within the delivery lines, but on the other hand ensures the static required bedding the tubbing rings when leaving the shield tail as quickly as possible.
  • both mortar mixtures and binder-free mixtures have in common that they consist in the main components of sand or gravel sand to ensure the required grain structure, water and lower admixtures of bentonite or fly ash as a filler to improve the processability.
  • the compression takes place at Propagation in loose soil usually through the shield tail, usually about four to eight distributed over the circumference injection nozzles are arranged, which are fed via piston pumps.
  • Grouting mortar is either delivered as ready-mixed mortar or mixed on-site from the supplied components.
  • the conveyance of processed grouting mortar from the tunnel mouth to the injection site in the tunnel is usually carried out via lore operation, then via pumping lines.
  • the object of the invention is to provide a possibility by means of which these problems can be minimized or largely avoided.
  • the invention is based on the finding that in the known methods the annular gap filling takes place both in terms of process and materials independently of soil degradation and soil extraction. In contrast, the invention proposes to couple these two processes together. This is done procedurally such that a part of the soil just dismantled or soil-liquid mixture branched off immediately behind the working face of the delivery line, if necessary, processed directly in the tunnel, but in any case immediately used again for Ringpaltverpressung, ie the material does not leave the tunnel tube between degradation and compression.
  • the invention is based on the basic principle that the material to be incorporated into the annular gap need not have better mechanical properties than the pending surrounding soil, since otherwise this would be decisive for bedding and settlement behavior.
  • the invention has the significant advantage that by using the mined soil or soil mixture as Verpressmaterial under direct removal from the feed line no separately to be transported and consequentfahrzufahren in the tunnel grout is more needed. This reduces the traffic volume and the noise pollution of the environment, which has an effect especially on inner-city highly-stressed construction sites. Since no storage space is required for the grouting mortar, the area required for construction site equipment is also reduced. Finally, the construction site logistics are simplified, since mortar transports through the tunnel are eliminated.
  • Another advantage that should not be underestimated in terms of operation is that the grouting mortar can be produced in situ precisely when it is actually needed for grouting. A hardening and disposal of too much or because of standstill not needed mortar is eliminated.
  • FIG. 1 to 3 schematically shows how in a mountain formation 1 by means of a shield machine 2, a tunnel tube 3 is ascended.
  • the shield machine 2 comprises in a known manner a cylindrical shield shell 4.
  • the degradation of the pending at the working face 5 soil is carried out by a drill head 6; the excavation chamber 7 is usually completed by a bulkhead 8.
  • the tunnel lining consisting here of tubbing rings 10 made of reinforced concrete or steel, installed; the resulting in the ancestor of the shield machine 2 behind the shield tail 9 annular gap 11 is, as described above, pressed by a suitable backfill material 12.
  • Fig. 1 can the invention in a tunnel or tunnel propulsion in the slurry mode, ie a propulsion with liquid-supported face, be explained, especially in cohesive soils such.
  • the working face is fed via a feed line 15 to a supporting liquid, usually a bentonite-water suspension.
  • the support liquid mixes with the degraded by the drill head 6 ground;
  • This bentonite-soil-water mixture is removed via a bulkhead 8 passing through the outlet opening 16 and pumped through a delivery line 17 through the tunnel tube 3 through to a daytime separation system 18.
  • the soil material is separated from the supporting liquid, which can then be pumped back to the working face 5 again.
  • a portion of the bentonite-soil-water mixture discharged from the working face is branched off from the delivery line 17 via a branching valve 19 and, if appropriate, after passing through a small separation plant 20 and a small processing plant 21 as a grouting material, is forced through a slurry pump 22 into a grouting line 23 from which it exits through arranged on the shield tail 9 Verpressdüsen 24 in the annular gap 11.
  • a coarse separation for example screening out of undesired grain fractions
  • a targeted admixing of further components for example cement
  • can also be an intermediate container for Volume buffering can be arranged.
  • Such systems are known in the Nachrucr Scheme.
  • the water contained in the bentonite-soil-water mixture is harmless when pressed, as long as the pressure application during the pressing ensures that it can be pressed through the pore spaces of the pending soil material, ie. H. that there is a grain-to-grain contact of the built-in soil material and thus a sufficient compaction according to the density of the surrounding soil. This is usually given in rolling or mixed-grained soils. The addition of a binder for solidification is then not required. For economic reasons, however, efforts will be made to reduce the bentonite contained in the soil mixture to the level necessary for pumpability, in order to be able to feed the separated bentonite back into the working face support. This Bentonitseparmaschine can be done easily in the described small processing plant 20, 21 in the tunnel.
  • a branching device 28 for example a flap, is arranged in order to feed a portion of the soil material to a small processing plant 29 again. From there, the optionally treated material by means of a slurry pump 30 in a Pressed pressing line 31, from which it again passes directly to the injection nozzles 24 on the shield tail 9 and exits into the annular gap 11.
  • Binding soils are often raised in the EPB mode, in which the mined soil is already treated at the working face with a conditioning agent, for example a foam, and therefore has no additional bentonite components. Also, this soil is basically suitable for direct recompression, provided that it is brought by means of flow agents in a pumpable and compressible state.
  • a conditioning agent for example a foam
  • the inventive method is basically suitable for drives with open working face; how this can be done, can be based on Fig. 3 be explained.
  • the material excavated at the working face 5 is conveyed out of the excavating chamber 7 by means of a conveying device 35, for example a conveyor belt, a branching device 37, for example a flap, again being provided in the region of a transition station to a further conveyor belt 36, by means of which a part of the conveyed soil material is branched off and a screening plant 38, optionally also a treatment plant 39 can be supplied.
  • a conveying device 35 for example a conveyor belt
  • a branching device 37 for example a flap
  • the processed material is pressed again via a slurry pump 40 in a Verpresstechnisch 41, through which it passes to the Verpressdüsen 24 at the end of the shield tail 9. If necessary, 42 water can be supplied via a line.
  • the method according to the invention can advantageously be used for rolling or mixed-grained soils (gravels, sands, optionally with cohesive admixtures).
  • the conveyed soil mixture can be used in virtually unchanged form for compression; reprocessing will not make sense for technical reasons, but at most for economic reasons.
  • cohesive soils on the other hand, as a rule, a preparation to be adapted to the requirements of the annular gap compression must be carried out.
  • a "concrete floor” By targeted admixture of cement or other binders to the branched, just degraded soil mixture, a "concrete floor” can be generated, which can be assigned a sealing or insulating, depending even a static-bearing function. It is thus possible according to the invention to produce a kind of "extruded concrete" as a tunnel safety in the tunnel.
  • the pending soil is the supplement and the existing groundwater is the mixing water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Claims (4)

  1. Procédé pour combler ou remplir par injection l'espace annulaire (11) entre le revêtement de tunnel (10) et le sol environnant (1) d'une cavité souterraine creusée par avancement au bouclier, en particulier d'un tunnel ou d'une galerie, sachant qu'afin de combler ou de remplir par injection l'espace annulaire (11), on prélève dans les tubes de tunnel (3) une partie de la terre détachée sur le front de taille (5) ou du mélange de terre produit lors de l'abattage et on l'utilise sans quitter les tubes de tunnel (3) pour combler ou remplir par injection l'espace annulaire (11), et on l'apporte directement à l'espace annulaire (11) entre le revêtement de tunnel (10) et le sol environnant (1), caractérisé en ce que, avant de combler ou remplir par injection l'espace annulaire (11), les fractions granulométriques et/ou les parts de bentonite indésirables sont, dans une installation de triage, séparées de la partie prélevée de la terre ou du mélange de terre.
  2. Procédé selon la revendication 1, caractérisé en ce que la terre détachée sur le front de taille (5) ou le mélange de terre produit lors de l'abattage est, dans les tubes de tunnel (3), préparé(e) en vue du comblement ou remplissage par injection.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on réalise l'élément de consolidation, principalement le soutènement des tubes de tunnel creusés (3), à partir de la terre détachée sur le front de taille (5) ou du mélange de terre produit lors de l'abattage.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la terre détachée sur le front de taille (5) ou le mélange de terre produit lors de l'abattage est utilisé(e) comme élément d'étanchéité ou d'isolation pour les tubes de tunnel de passage (3).
EP04028102A 2003-12-04 2004-11-26 Procédé pour remplir des espaces vides localisés hors de la paroie d'un tunnel Expired - Lifetime EP1538302B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10356584A DE10356584A1 (de) 2003-12-04 2003-12-04 Verfahren zum Verfüllen von Hohlräumen außerhalb der lichten Tunnelröhre eines maschinell aufgefahrenen Tunnels
DE10356584 2003-12-04

Publications (2)

Publication Number Publication Date
EP1538302A1 EP1538302A1 (fr) 2005-06-08
EP1538302B1 true EP1538302B1 (fr) 2010-04-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04028102A Expired - Lifetime EP1538302B1 (fr) 2003-12-04 2004-11-26 Procédé pour remplir des espaces vides localisés hors de la paroie d'un tunnel

Country Status (3)

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EP (1) EP1538302B1 (fr)
AT (1) ATE466166T1 (fr)
DE (2) DE10356584A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005011266B4 (de) * 2004-12-27 2009-10-01 FITR-Gesellschaft für Innovation im Tief- und Rohrleitungsbau Weimar mbH Baustoffmischung und deren Verwendung
DE102007024057B4 (de) * 2007-05-22 2009-03-12 S & B Industrial Minerals Gmbh Verfahren zur Verfestigung und/oder Abdichtung lockerer geologischer Formationen im Zuge von geotechnischen Baumaßnahmen
DE102016009198A1 (de) * 2016-07-27 2018-02-01 Hydac International Gmbh Schmiersystem
CN110863833B (zh) * 2019-11-22 2020-12-22 中铁隧道局集团有限公司 一种隧道盾构掘进始发端头孤石区盾构机的掘进参数的控制工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187499A (en) * 1981-05-13 1982-11-18 Obayashi Gumi Kk Back-filling injection execution method in earth pressure system shield construction method
EP0348118A2 (fr) * 1988-06-22 1989-12-27 Kabushiki Kaisha Iseki Kaihatsu Koki Procédé et dispositif pour forer un trou dans le sol
US6082930A (en) * 1997-11-27 2000-07-04 Obayashi Corporation Shield driving machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561223A (en) * 1968-07-09 1971-02-09 John R Tabor Tunneling machine with concrete wall forming mechanism
AU1686676A (en) * 1977-03-12 1978-02-23 Pan Canadian Science And Techn Earth tunnelling
DE2932430C2 (de) * 1979-08-10 1985-01-10 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Verfahren zum Einbringen eines Tunnelausbaus aus Beton
JPS60181490A (ja) * 1984-02-24 1985-09-17 日本電信電話株式会社 管埋設装置
DE69718461T2 (de) * 1997-08-14 2003-10-02 I.T.M. Industriele Tunnelbouw Methode C.V., Kinderdijk Verfahren zum Herstellen eines bekleideten Tunnels
DE19800963A1 (de) * 1998-01-14 1999-07-22 Holzmann Philipp Ag Verfahren zum Verpressen des Ringraums zwischen Tübbingen und Gebirge mit Mörtel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187499A (en) * 1981-05-13 1982-11-18 Obayashi Gumi Kk Back-filling injection execution method in earth pressure system shield construction method
EP0348118A2 (fr) * 1988-06-22 1989-12-27 Kabushiki Kaisha Iseki Kaihatsu Koki Procédé et dispositif pour forer un trou dans le sol
US6082930A (en) * 1997-11-27 2000-07-04 Obayashi Corporation Shield driving machine

Also Published As

Publication number Publication date
DE10356584A1 (de) 2005-06-30
DE502004011093D1 (de) 2010-06-10
EP1538302A1 (fr) 2005-06-08
ATE466166T1 (de) 2010-05-15

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