EP4414533B1 - Mikrotunnel mit ringförmiger dichtung zur trennung von bohrflüssigkeiten und schmierung - Google Patents

Mikrotunnel mit ringförmiger dichtung zur trennung von bohrflüssigkeiten und schmierung

Info

Publication number
EP4414533B1
EP4414533B1 EP24153858.6A EP24153858A EP4414533B1 EP 4414533 B1 EP4414533 B1 EP 4414533B1 EP 24153858 A EP24153858 A EP 24153858A EP 4414533 B1 EP4414533 B1 EP 4414533B1
Authority
EP
European Patent Office
Prior art keywords
cylindrical body
micro
tunneling machine
ground
diameter
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.)
Active
Application number
EP24153858.6A
Other languages
English (en)
French (fr)
Other versions
EP4414533A1 (de
Inventor
Michel CHAURAY
Frédéric Simon
Benoit CZAPLA
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.)
Soletanche Freyssinet SA
Original Assignee
Soletanche Freyssinet SA
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 Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Publication of EP4414533A1 publication Critical patent/EP4414533A1/de
Application granted granted Critical
Publication of EP4414533B1 publication Critical patent/EP4414533B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E21D9/005—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit
    • 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
    • E21D9/0635—Tail sealing means, e.g. used as end shuttering
    • 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
    • E21D9/087—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 rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines

Definitions

  • the assembly consisting of the micro-tunneling machine and the jacking pipes is pushed from the starting shaft by a jacking station equipped with hydraulic jacks. Once a jacking pipe is completely sunk into the ground, an additional jacking pipe is brought to the bottom of the shaft in the jacking station, between the last jacking pipe and the hydraulic jacks. The actuation of the latter therefore has the effect of exerting a thrust on the additional jacking pipe which, in turn, pushes and advances the assembly of jacking pipes and the micro-tunneling machine already sunk into the ground.
  • micro-tunnel made up of the succession of sinking pipes and the micro-tunnel boring machine, which advances into the ground as the digging progresses.
  • the cutting face is pressurized so that the drilling fluid, also called the slurry fluid, also serves to maintain a confining pressure providing frontal support for the excavation.
  • the drilling fluid also called the slurry fluid
  • the suction of lubricating fluid has the disadvantage of increasing the consumption of lubricating fluid.
  • the invention achieves its aim by a micro-tunneler according to claim 1 in which the cutting module further comprises an annular seal located on the outer face of the cylindrical body, the diameter of the annular seal being at least equal to the diameter of the cutting head, so that the annular seal comes into contact with the ground during drilling to achieve a fluidic separation between the drilling fluid and the lubricating fluid.
  • the plate comes into contact with the ground and pivots relative to the base to a position where the internal angle between the base and the plate is less than 90°.
  • the plate which tends to return to its initial position, is blocked in rotation by the ground. This has the effect of forcing the plate against the wall of the ground, thus ensuring a sealed contact between the plate and the ground.
  • the internal angle is of the order of 120° before its insertion into the ground.
  • the diameter of the cutting head is greater than the outside diameter of the cylindrical body.
  • the outer diameter of the cylindrical body is between 500 mm and 3000 mm.
  • the lubricating fluid flows into the annular space located on the outer face of the cylindrical body and the land surrounding the cylindrical body.
  • the lubricating fluid flows in the annular space between the outer face or extrados of the sinking pipe and the ground surrounding the sinking pipe.
  • the sinking pipe comprises at least one injection orifice opening onto its outer face and cooperating with the lubricating fluid injection device.
  • the latter also comprises a lubrication ring arranged axially between the cylindrical body and the sinking pipe.
  • FIG. 1 an example of an embodiment of a micro-tunneling installation 10 has been illustrated comprising a starting shaft 14 for a micro-tunneling machine 12.
  • the shaft 14 consists of a circular wall 16 made in a soil S (not illustrated here for reasons of readability).
  • a sinking station 16 At the bottom of the shaft 14 there is a sinking station 16 provided with sinking jacks 18 which extend in a sinking direction A.
  • a through opening 20 is provided in the circular wall 16. It is understood that the micro-tunneling machine 12 is engaged in the ground, in a direction slightly inclined relative to the horizontal, through this opening 20.
  • the cutting head 108 comprises a cutting wheel 109 which is provided with cutting tools 111 projecting radially beyond the diameter D1 of the cylindrical body.
  • the initial angle between the plate could be equal to or less than 90° as long as the plate rests against the ground.
  • annular seal could also be made of a single piece, or of two half collars.

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)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Claims (10)

  1. Mikrotunnelbohrer (12), umfassend:
    ein Schneidmodul (100), umfassend einen zylindrischen Körper (102), der sich axial zwischen einem hinteren Abschnitt (104) und einem vorderen Abschnitt (106) erstreckt, und einen Schneidkopf (108), der sich an der Vorderseite des zylindrischen Körpers gegenüber dem hinteren Abschnitt befindet, wobei der Schneidkopf (108) in Bezug auf den zylindrischen Körper (102) um die Achse (B) des zylindrischen Körpers drehbar ist,
    eine Fluidzirkulationsvorrichtung (110) zum Einspritzen eines Bohrfluids (F) und zum Absaugen von Bohrklein (D) an dem vorderen Abschnitt des zylindrischen Körpers,
    mindestens ein Vortriebsrohr (120), das sich auf der Rückseite des zylindrischen Körpers befindet;
    eine Einspritzvorrichtung (130) eines Schmierfluids (L) in die Außenseite des Vortriebsrohrs;
    wobei das Schneidmodul (100) ferner einen Dichtring (150) aufweist, der sich an der Außenseite (102a) des zylindrischen Körpers (102) befindet, wobei der Durchmesser (D3) des Dichtrings (150) mindestens wie der Durchmesser (D2) des Schneidkopfs (108) ist, sodass der Dichtring (150) beim Bohren mit dem Gelände (P) in Kontakt kommt, um eine Fluidtrennung zwischen dem Bohrfluid (F) und dem Schmierfluid (L) zu bewirken, wobei der Dichtring (150) einen Bund (152) umfasst, der aus einer Vielzahl von Lamellen (154) gebildet ist, die nebeneinander angeordnet und in Bezug auf den zylindrischen Körper elastisch beweglich sind, wobei mindestens eine der Lamellen (154) in Bezug auf den zylindrischen Körper geneigt ist, dadurch gekennzeichnet, dass sich die Lamellen (150) seitlich zumindest teilweise paarweise überlappen.
  2. Mikrotunnelbohrer nach Anspruch 1, wobei sich der Dichtring (150) in dem vorderen Abschnitt des zylindrischen Körpers (100) befindet.
  3. Mikrotunnelbohrer nach einem der vorherigen Ansprüche, wobei mindestens eine der Lamellen aus einem gefalteten Blech besteht, das eine an dem zylindrischen Körper (100) befestigte Basis (156) und ein Plättchen (158), das mit der Basis einen Winkel (α) bildet, aufweist.
  4. Mikrotunnelbohrer nach Anspruch 3, wobei der Winkel (α) zwischen der Basis (156) und dem Plättchen (158) größer ist als 90°, bevor er in den Boden eingeführt wird.
  5. Mikrotunnelbohrer nach einem der vorherigen Ansprüche, wobei der Durchmesser (D2) des Schneidkopfs (108) größer ist als der Außendurchmesser (D1) des zylindrischen Körpers.
  6. Mikrotunnelbohrer nach Anspruch 5, wobei der Schneidkopf (108) ein Schneidrad (109) aufweist, das mit Schneidwerkzeugen (111) versehen ist, die radial über den Durchmesser (D1) des zylindrischen Körpers hinaus hervorstehen.
  7. Mikrotunnelbohrer nach einem der vorherigen Ansprüche, wobei der Außendurchmesser (D4) des Vortriebsrohrs kleiner als oder gleich wie der Durchmesser (D1) des zylindrischen Körpers ist.
  8. Mikrotunnelbohrer nach einem der vorherigen Ansprüche, wobei das Vortriebsrohr mindestens eine Einspritzöffnung (136) aufweist, die an seiner Außenseite mündet und mit der Vorrichtung zum Einspritzen des Schmierfluids zusammenwirkt.
  9. Mikrotunnelbohrer nach einem der vorherigen Ansprüche, der ferner einen Schmierring (170) aufweist, der axial zwischen dem zylindrischen Körper (100) und dem Vortriebsrohr (120) angeordnet ist.
  10. Verwendung eines Mikrotunnelbohrers (12) nach einem der vorherigen Ansprüche zum Herstellen eines Mikrotunnels in einem Boden (S), wobei der Mikrotunnel aus einer Vielzahl von Vortriebsrohren (120, 122) besteht, die hintereinander angeordnet sind.
EP24153858.6A 2023-02-13 2024-01-25 Mikrotunnel mit ringförmiger dichtung zur trennung von bohrflüssigkeiten und schmierung Active EP4414533B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2301298A FR3145769B1 (fr) 2023-02-13 2023-02-13 Micro-tunnelier comportant un joint annulaire pour la séparation des fluides de forage et de lubrification

Publications (2)

Publication Number Publication Date
EP4414533A1 EP4414533A1 (de) 2024-08-14
EP4414533B1 true EP4414533B1 (de) 2025-07-23

Family

ID=86100107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24153858.6A Active EP4414533B1 (de) 2023-02-13 2024-01-25 Mikrotunnel mit ringförmiger dichtung zur trennung von bohrflüssigkeiten und schmierung

Country Status (3)

Country Link
EP (1) EP4414533B1 (de)
ES (1) ES3046663T3 (de)
FR (1) FR3145769B1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1759943B1 (de) * 1968-06-22 1971-10-28 Bade & Co Gmbh Dichtung fuer den Schildschwanz von Vortriebsschilden
DE2545020A1 (de) * 1975-10-08 1977-04-14 Peiner Masch Schrauben Verfahren und vorrichtung zur herstellung eines tunnelrohres mit mantelreibungsminderung
CN210264715U (zh) * 2019-05-22 2020-04-07 中铁十八局集团有限公司 一种岩石顶管机防沉渣装置
CN112012757B (zh) * 2020-09-15 2022-02-25 临沂市政集团有限公司 一种泥水平衡式顶管机及其在流砂地层中的施工工艺
CN216518002U (zh) * 2021-12-31 2022-05-13 核工业井巷建设集团有限公司 一种防止机头返渣的顶管机
CN217872832U (zh) * 2022-08-31 2022-11-22 安徽唐兴装备科技股份有限公司 一种顶管机挡土扩孔注浆机构

Also Published As

Publication number Publication date
FR3145769B1 (fr) 2025-05-23
FR3145769A1 (fr) 2024-08-16
EP4414533A1 (de) 2024-08-14
ES3046663T3 (en) 2025-12-02

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