EP0835984B1 - Procédé de substitution de liquide de soutien par air comprimé dans une machine de creusement hydraulique à bouclier - Google Patents

Procédé de substitution de liquide de soutien par air comprimé dans une machine de creusement hydraulique à bouclier Download PDF

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Publication number
EP0835984B1
EP0835984B1 EP97116218A EP97116218A EP0835984B1 EP 0835984 B1 EP0835984 B1 EP 0835984B1 EP 97116218 A EP97116218 A EP 97116218A EP 97116218 A EP97116218 A EP 97116218A EP 0835984 B1 EP0835984 B1 EP 0835984B1
Authority
EP
European Patent Office
Prior art keywords
cutting wheel
sectional region
supporting liquid
space
compressed air
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
EP97116218A
Other languages
German (de)
English (en)
Other versions
EP0835984A2 (fr
EP0835984A3 (fr
Inventor
Hans Günther Dr.-Ing. Gabener
Fred Dipl.-Ing. Gutberlet
Karl Heinz Dipl.-Ing. Melzer
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.)
Hochtief AG
Original Assignee
Hochtief AG
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 Hochtief AG filed Critical Hochtief AG
Publication of EP0835984A2 publication Critical patent/EP0835984A2/fr
Publication of EP0835984A3 publication Critical patent/EP0835984A3/fr
Application granted granted Critical
Publication of EP0835984B1 publication Critical patent/EP0835984B1/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
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • 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
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
    • E21D9/065—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end with devices for provisionally supporting the front face
    • 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
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
    • E21D9/0875—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket
    • E21D9/0879—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket the shield being provided with devices for lining the tunnel, e.g. shuttering

Definitions

  • the invention relates to a method for replacing in a hydroshield with a material discharge opening Cutting wheel supporting fluid supporting the face by compressed air, with the support fluid initially in an upper cross-sectional area with simultaneous Replacement is released by compressed air, then in the upper one Cross-sectional area of the working face with a support material is applied and then also in the lower cross-sectional area the supporting fluid through compressed air is replaced.
  • the invention has for its object the method of to make it easier and safer at the beginning.
  • the invention teaches in one Method of the type mentioned that after draining the supporting fluid in the upper cross-sectional area the material discharge openings on the face opposite side are mechanically closed and by Retracting the cutting wheel between the face and Cutting wheel a space is formed that subsequently the space in the upper cross-sectional area with buoyant fired clay balls that is then filled in the lower cross-sectional area Compressed air replaced and the remaining part of the space is filled with the clay balls, and that at least finally the clay ball layer in the space by advancing the cutting wheel against the working face is pressed.
  • the buoyant burned Clay balls preferably have a diameter of 5 to 10 mm, they are commercially available in the form of BigPacks. These clay balls are expediently through feed openings in the cutting wheel with compressed air from 5 to 7 bar in blown the gap.
  • the pressing of the clay balls against the face by advancing the cutting wheel, the if necessary accompanied by turning the cutting wheel can be, is preferably also immediately after Backfilling of the upper cross-sectional area Part of the space performed. If necessary, can it is also recommended to use the gap between the cutting wheel and Shield jacket of the hydroshield with an inflatable Seal the hose seal.
  • a hydroshield in which a shield jacket 1 through a baffle 2 and a Pressure wall 3, a working chamber 4 is formed, in which so-called closed cutting wheel 5, i.e. one up on Material discharge openings 6 essentially closed Cutting wheel 5 works (see. Fig. 2).
  • the working chamber 4 is during jacking with supporting fluid supporting the face filled, the pressure of which is between a baffle 2 and pressure wall 3 located compressed air cushion 7 is controlled. That through the material discharge openings 6 Extracted soil material is in the lower area of the Working chamber 4 discharged with the support liquid, fresh Support fluid is in the upper area of the working chamber 4th fed.
  • this will be the normal support fluid against a thickened support fluid in the form an appropriately prepared bentonite suspension.
  • this support fluid is initially in an upper cross-sectional area, e.g. the upper half of the cross-section, with simultaneous replacement by compressed air drained. Since the support fluid is thickened, remains on the face 8 an approximately 3 to 5 cm thick Layer.
  • the material discharge openings 6 are now open the back of the cutting wheel 5 mechanically closed, with those in the lower cross-sectional area Material discharge openings 6 previously by turning the cutting wheel 5 are brought into the upper cross-sectional area.
  • cover plates 9 which may be interposed a rubber seal 10 or a rubber frame in welded guide rails 11 inserted on the cutting wheel 5 and secured with wooden wedges 12 (cf. Figure 3). Then the cutting wheel 5 becomes one piece retracted so that between the face and cutting wheel a space 13 of 15 to 30 cm depth is created. The The cutting wheel 5 can also be retracted before or during Closing the material discharge openings 6 performed become. Then a line 14 is connected to a feed opening 15 connected in the cutting wheel 5; this feed opening 15 can also be from a partially closed material discharge opening 6 be formed.
  • Line 14 leads to a spraying machine 16 in a follower 17, via the fired clay balls floating with compressed air of 5 to 7 bar 18 with a diameter of 5 to 10 mm in the upper part of the space 13 until it is filled be blown in; the clay balls 18 are the injection molding machine 16 supplied in the form of BigPacks 19. then the cutting wheel 5 is rotated a little and against the Face 8 advanced, with a space in the space 13 Mixture of thickened support fluid, undamaged Clay balls and clay parts of broken clay balls are created.
  • the clay balls 18 can after pumping and Approaching the hydroshield at least partially separated and be used again later.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Claims (11)

  1. Procédé de remplacement de fluide de soutien soutenant le front d'attaque (8), dans un bouclier hydraulique comportant un couteau circulaire (5) présentant des orifices de distribution de matière (6), par de l'air comprimé, le fluide de soutien étant d'abord versé dans une zone de section transversale supérieure tout en le remplaçant simultanément par de l'air comprimé, une matière de soutien étant envoyée ensuite sur le front d'attaque dans la zone de section transversale supérieure et le fluide de soutien étant ensuite remplacé également dans la zone de section transversale inférieure par de l'air comprimé, caractérisé en ce qu'après le déversement du fluide de soutien se trouvant dans la zone de section transversale supérieure, les orifices de distribution de matière sont fermés mécaniquement sur le côté détourné du front d'attaque et qu'un intervalle (13) est formé entre le front d'attaque et le couteau circulaire en ramenant le couteau circulaire, qu'ensuite l'intervalle de la zone de section transversale supérieure est rempli de billes de terre cuite flottables (18), qu'ensuite le fluide de soutien est remplacé par de l'air comprimé également dans la zone de section transversale inférieure et que la partie restante de l'intervalle est remplie avec les billes de terre, et qu'enfin au moins la couche de billes de terre se trouvant dans l'intervalle est comprimée contre le front d'attaque en avançant le couteau circulaire.
  2. Procédé selon la revendication 1, caractérisé en ce que les orifices de distribution de matière, qui se trouvent dans la zone de section transversale inférieure après le déversement du fluide de soutien se trouvant dans la zone de section transversale supérieure sont amenés, en tournant le couteau circulaire, vers la zone de section transversale supérieure et y sont fermés.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le fluide de soutien utilisé lors d'un fonctionnement normal du bouclier hydraulique est échangé avant déversement contre un fluide de soutien épaissi.
  4. Procédé selon une des revendications 1 à 3, caractérisé en ce qu'avant l'introduction respective des billes de terre, une couche épaisse très rigide est pulvérisée sur le front d'attaque.
  5. Procédé selon la revendication 4, caractérisé en ce que la couche épaisse très rigide est appliquée dans une épaisseur de 3 à 5 cm.
  6. Procédé selon une des revendications 3 à 5, caractérisé en ce qu'on utilise comme fluide de soutien épaissi et couche épaisse très rigide une suspension de bentonite.
  7. Procédé selon une des revendications 1 à 6, caractérisé en ce que l'intervalle est conformé avec une profondeur de 15 à 30 cm.
  8. Procédé selon une des revendications 1 à 7, caractérisé en ce que les billes de terre utilisées sont d'un diamètre de 5 à 10 mm.
  9. Procédé selon une des revendications 1 à 8, caractérisé en ce que les billes de terre sont soufflées dans l'intervalle à travers des orifices d'acheminement percés dans le couteau circulaire à l'aide d'air comprimé de 5 à 7 bar.
  10. Procédé selon une des revendications 1 à 9, caractérisé en ce que les billes de terre sont comprimées contre le front d'attaque directement après le remplissage de la partie se trouvant dans la zone de section transversale supérieure de l'intervalle en avançant le couteau circulaire.
  11. Procédé selon une des revendications 1 à 10, caractérisé en ce que la fente entre le couteau circulaire et l'enveloppe du bouclier hydraulique est colmatée à l'aide d'un joint tubulaire gonflable.
EP97116218A 1996-10-12 1997-09-18 Procédé de substitution de liquide de soutien par air comprimé dans une machine de creusement hydraulique à bouclier Expired - Lifetime EP0835984B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19642093 1996-10-12
DE19642093A DE19642093C1 (de) 1996-10-12 1996-10-12 Verfahren zum Ersetzen von Stützflüssigkeit durch Druckluft in einem Hydroschild

Publications (3)

Publication Number Publication Date
EP0835984A2 EP0835984A2 (fr) 1998-04-15
EP0835984A3 EP0835984A3 (fr) 1998-08-19
EP0835984B1 true EP0835984B1 (fr) 2003-05-14

Family

ID=7808542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116218A Expired - Lifetime EP0835984B1 (fr) 1996-10-12 1997-09-18 Procédé de substitution de liquide de soutien par air comprimé dans une machine de creusement hydraulique à bouclier

Country Status (2)

Country Link
EP (1) EP0835984B1 (fr)
DE (1) DE19642093C1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2846727B1 (fr) * 2002-10-30 2005-02-18 Claude Bresso Agencement de joint d'etancheite pour deux pieces articulees

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227083C3 (de) * 1972-06-03 1981-07-30 Wayss & Freytag Ag, 6000 Frankfurt Schild für den mechanischen Tunnelvortrieb mit flüssigkeitsgestützter Ortsbrust
JPH04277292A (ja) * 1991-03-01 1992-10-02 Takenaka Komuten Co Ltd シールド工法におけるビット交換方法
DE4118907C1 (fr) * 1991-06-08 1992-06-11 Wayss & Freytag Ag, 6000 Frankfurt, De
DE4225121A1 (de) * 1992-07-30 1994-02-03 Westfalia Becorit Ind Tech Verfahren und Einrichtung zur Abstützung der Ortsbrust beim Schildvortriebs- oder Rohrvorpreßverfahren
DE4409049C1 (de) * 1994-03-17 1995-03-30 Hochtief Ag Hoch Tiefbauten Verfahren zum Ersetzen von Stützflüssigkeit durch Druckluft und Verwendung eines Hydroschildes zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
DE19642093C1 (de) 1997-10-02
EP0835984A2 (fr) 1998-04-15
EP0835984A3 (fr) 1998-08-19

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