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EP0315124B1 - Bouchon pour la consolidation de roches - Google Patents

Bouchon pour la consolidation de roches Download PDF

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Publication number
EP0315124B1
EP0315124B1 EP88118186A EP88118186A EP0315124B1 EP 0315124 B1 EP0315124 B1 EP 0315124B1 EP 88118186 A EP88118186 A EP 88118186A EP 88118186 A EP88118186 A EP 88118186A EP 0315124 B1 EP0315124 B1 EP 0315124B1
Authority
EP
European Patent Office
Prior art keywords
plug
threaded
tube
tube body
plug according
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
EP88118186A
Other languages
German (de)
English (en)
Other versions
EP0315124A1 (fr
Inventor
Günter Berg
Karl-Heinz Schwarz
Wolf-Rüdiger Siems
Hans-Joachim Wagner
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0315124A1 publication Critical patent/EP0315124A1/fr
Application granted granted Critical
Publication of EP0315124B1 publication Critical patent/EP0315124B1/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
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing

Definitions

  • the invention relates to a stopper for rock solidification, such as for watering work or for anchoring boreholes produced in underground mining and tunnel construction, according to the preamble of claim 1.
  • a plug for rock solidification has an elastically expandable tubular body which is to be anchored liquid-tight in a borehole by means of a threaded tensioning device.
  • a feed pipe which is connected to the plug, is used for anchoring.
  • the plug In the depth of the borehole, the plug is first fixed in a rotationally fixed manner in the borehole by slightly pulling back the feed pipe in the direction of extraction. This is achieved in that a threaded nut seated on a threaded pipe radially expands an expansion sleeve, which in turn presses a relatively thin pipe section of the plug against the wall of the borehole.
  • the invention has for its object to propose a plug for drill holes in the mountains or in concrete, which is to be fixed in the insertion direction by means of a loading pipe at any depth of the drill hole and thus to be anchored in a load-proof and liquid-tight manner by actuating the threaded clamping device, with the detachment of one Feed pipe from the plug should be guaranteed.
  • the invention solves this problem according to the characterizing part of claim 1.
  • the advantages of the invention lie in the simple pre-fixing of the plug consisting of a few and simple parts in the borehole as a prerequisite for the rotary movement of the threaded clamping device for fixing the plug in the borehole and in the safe unscrewing of the feed pipe from the plug.
  • a sealing plug 1 consists of a valve body 2 with a check valve 3, a threaded tube 4, a sleeve 5, a backstop 6, a thread tensioning device 7, an expansion spring 8, three cups 9 to 11, a tubular body 12, and a cap 13.
  • the spreading spring 8 consisting of a base plate 14 and three arms 15, secures the sealing plug 1 axially in a borehole against being pulled out in the direction of the arrow 20 and against rotation.
  • the spreading spring 8 is fixedly connected to the bowl 9 serving as a pressure plate by spot welding 21.
  • the bowl 9 sits by means of the screw connections 2, 4, 7 in a rotationally fixed manner on a shoulder 22 of the tubular body 12 by means of frictional engagement.
  • the bowl 10 serving as a pressure plate is vulcanized into the tubular body 12.
  • the bowl 11 sits frictionally on a shoulder 23 of the tubular body 12 and ensures the positive connection between the sleeve 5 and the tubular body 12.
  • the base plate 14 can also be directly connected to the tubular body 12 by adhesive bonding (FIG. 4) or by cams 16 of the tubular body 12 (FIG. 5).
  • the base plate 14 is to be positively connected to the bowl 9 by means of pins 17.
  • the length 40 of the arms 15 correspond to their diameter 41 and are 25% larger than the diameter 42 of the tubular body 12.
  • the backstop 6 consists of the sleeve 5 with ribs 24 which is non-rotatable but axially displaceable in the tubular body 12, the ribs 24 being slidably mounted in grooves 25, a locking body 26 in a recess 27 of the sleeve 5, which engages in a groove 28 with a stop and a sliding surface 29, 30 and a circumferential boundary by a wall 33 of the tubular body 12.
  • a threaded nut 18 is held positively in the sleeve 5 and axially fixed by a surface 31 and cam 32.
  • the plug 1 is screwed onto a feed pipe 35 and then introduced into the borehole to the desired depth.
  • the arms 15 of the spreading spring 8 fix the tubular body 12 against rotation or pulling out in the direction of arrow 20 in the borehole.
  • the arms 15 engage in the rough surface of the borehole, the holding effect of the arms 15 being increased by slightly tightening the feed pipe 35 in the direction of the arrow 20.
  • the threaded clamping device 7 is activated in accordance with the direction of the arrow 19 (FIG. 2).
  • the base plate 14 serves as a front bearing for the valve body 2 rotated via the feed pipe 35 in the direction of the arrow 19.
  • the form-fitting threaded nut 18 pushes the sleeve 5 in the direction of the arrow 20. As a result, it exerts pressure on the bowl 10 and on the between the bowls 9, 10 lying section 37 of the tubular body 12.
  • the circumference of the tubular body 12 bulges in section 37 in accordance with the contour 36 drawn in broken lines. This leads to a relatively high contact pressure of the stopper 1 against the wall of the borehole.
  • the material of the tubular body presses against the threaded pipe, so that overall a firm anchoring of the plug 1 in the borehole is achieved, which is also still liquid and gas tight.
  • the locking body 26 slides on the sliding surface 30 and on the circumference of the threaded tube 4 and thereby presses itself more or less into the elastic tubular body 12.
  • the material of the tubular body 12 ensures a certain contact pressure of the locking body 26 on the circumference of the threaded tube 4 and in the longitudinal groove 28.
  • the feed pipe 35 is injected with an injection medium through the plug 1 in a known manner.
  • the check valve 3 seals the stopper 1.
  • the counterclockwise rotation of the feed tube 35 that is, counter to the direction of the arrow 19, causes the surface 29 to bear against the locking body 26 at the latest after one revolution and the threaded tube 4 is locked in place by the positive engagement of the sleeve 5 in the tubular body 12.
  • a stuck feed pipe 35 can also be unscrewed from the valve body 2. The risk of the stopper relaxing when the feed pipe 35 is turned to the left is eliminated.
  • two or three corresponding longitudinal grooves 28 can be provided on the circumference of the threaded tube 4, so that the locking effect is already present after an angle of rotation of, for example, 120 ° against the direction of the arrow 19.
  • the plug 1 which consists of a few simple parts, is also essential.
  • the plug 1 is designed for a maximum liquid pressure of the injection medium of up to 300 kp / cm2.
  • the valve body 2 and the threaded tube 4 are made of a high-strength material such as steel.
  • these, as well as other highly stressed parts can consist of a suitable material, such as fiber-reinforced plastic, which can be machined by the cutting machines. This prevents premature wear on the cutting heads.
  • valve body 2 and threaded tube 4 which is particularly stressed at the maximum liquid pressure
  • a suitable material such as steel or plastic. This eliminates a threaded connection.
  • the cross-sections to be observed are decisive for the stability of the one-piece part which passes through the stopper 1.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Piles And Underground Anchors (AREA)

Claims (9)

  1. Bouchon pour la consolidation de terrains, tel que des trous de forage réalisés pour des travaux d'imprégnation ou pour l'ancrage dans les ouvrages miniers et la construction de tunnels souterrains, comportant une partie de corps tubulaire s'élargissant élastiquement, située entre des plaques de pression, un tube fileté (4), côté entrée un dispositif d'ancrage de trou de forage, un corps de vanne (2) avec clapet de non-retour (3), un manchon fileté pour un tube de chargement (35) et, côté sortie un dispositif de serrage fileté (7) pour presser la partie de corps tubulaire contre la paroi du trou de forage au moyen d'une douille (5) déplaçable uniquement axialement dans le corps tubulaire (12), laquelle douille entoure par concordance de forme un écrou (18) vissé avec le tube fileté (4), caractérisé en ce que le dispositif d'ancrage de trou de forage est un ressort d'écartement (8) en étoile avec des bras (15) élastiques qui sont écartés dans le sens contraire au sens d'introduction (flèche 20) du bouchon (1), dans le trou de forage, le ressort d'écartement (8) étant relié de façon fixe avec le corps tubulaire (12) et en ce qu'il est prévu, entre le corps tubulaire (12) et le tube fileté (4) - dans la région du dispositif de serrage fileté (7) - un blocage de rotation en retour (6) pour le tube fileté (4).
  2. Bouchon selon la revendication 1, caractérisé en ce que la longueur (40) des bras (15) et le diamètre (41) des bras (15) à leur extrémité libre, sont à peu près égaux et environ de 10 à 40 % supérieurs au diamètre (42) du bouchon (1).
  3. Bouchon selon la revendication 1, caractérisé en ce qu'une plaque de fond (14), d'une seule pièce avec le ressort d'écartement (8), est collée avec le corps tubulaire (12) ou assemblée par concordance de forme avec celui-ci.
  4. Bouchon selon la revendication 1, caractérisé en ce que la plaque de fond (14) est assemblée de manière fixe avec une plaque de pression en forme de godet (9), par soudage (21) ou par concordance de forme (tenon 17).
  5. Bouchon selon la revendication 1, caractérisé en ce que le tube fileté (4) présente une rainure longitudinale (28) et en ce que dans la douille (5), un corps de blocage (26) coulissant radialement est monté dans un évidement (27) en forme de fenêtre, et coopère dans le sens du serrage (19) avec une surface de glissement (30) et dans le sens opposé, avec une butée (29).
  6. Bouchon selon la revendication 5, caractérisé en ce que la section transversale de la rainure longitudinale (28) est configurée en dents de scie par une surface de butée (29) à peu près radiale et par une surface de glissement (30) à peu près tangentielle.
  7. Bouchon selon la revendication 5, caractérisé en ce que le corps de blocage (26) est en forme de disque.
  8. Bouchon selon la revendication 1, caractérisé en ce que le corps tubulaire (12) comporte une plaque de pression (10) vulcanisée à l'intérieur contre laquelle se trouve la douille (5) coulissant axialement.
  9. Bouchon selon la revendication 1, caractérisé en ce que les deux extrémités du corps tubulaire (12) sont pourvues chacune d'un godet (9 et 11) dont le diamètre extérieur est inférieur au diamètre (42) du corps tubulaire (12).
EP88118186A 1987-11-05 1988-11-02 Bouchon pour la consolidation de roches Expired - Lifetime EP0315124B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873737462 DE3737462A1 (de) 1987-11-05 1987-11-05 Stopfen fuer die gebirgsverfestigung
DE3737462 1987-11-05

Publications (2)

Publication Number Publication Date
EP0315124A1 EP0315124A1 (fr) 1989-05-10
EP0315124B1 true EP0315124B1 (fr) 1992-04-29

Family

ID=6339773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118186A Expired - Lifetime EP0315124B1 (fr) 1987-11-05 1988-11-02 Bouchon pour la consolidation de roches

Country Status (2)

Country Link
EP (1) EP0315124B1 (fr)
DE (2) DE3737462A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012216356B1 (en) * 2012-08-22 2013-08-29 Red Tractor Pty Ltd A Packing Plug

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509122B4 (de) * 1995-03-17 2004-02-05 Institut für geowissenschaftliche Gemeinschaftsaufgaben Seismisches Impulsgerät
CN109723481B (zh) * 2019-01-08 2020-08-14 湖北省鄂东南基础工程公司 一种锚杆托盘与止浆塞一体式结构
DE102019121790A1 (de) * 2019-08-13 2021-02-18 Bernhard Förster Gmbh Orthodontische Dehnschraube
CN116398082B (zh) * 2023-06-07 2023-09-05 太原理工大学 一种深层地热井多含水层封隔装置、取水装置及取水方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8121985U1 (de) * 1981-07-27 1981-11-26 Estel Hoesch Werke Ag, 4600 Dortmund Verlorener verschlussstopfen
DE3313852C1 (de) * 1983-04-16 1984-11-15 Diehl GmbH & Co, 8500 Nürnberg Aufweitbarer, verlorener Verschlußstopfen für Injektions-Bohrlöcher
DE3404689C2 (de) * 1984-02-10 1986-09-04 Diehl GmbH & Co, 8500 Nürnberg Verschlußstopfen für Kunstharzinjektionen zur Verfestigung des Hangenden im Bergbau
DE3625393C1 (en) * 1986-07-26 1992-02-06 Bergwerksverband Gmbh Hole plug

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012216356B1 (en) * 2012-08-22 2013-08-29 Red Tractor Pty Ltd A Packing Plug
AU2012216356B9 (en) * 2012-08-22 2013-09-26 Red Tractor Pty Ltd A Packing Plug
WO2014028973A1 (fr) * 2012-08-22 2014-02-27 Red Tractor Pty Ltd Bouchon

Also Published As

Publication number Publication date
DE3737462A1 (de) 1989-05-18
DE3870578D1 (fr) 1992-06-04
EP0315124A1 (fr) 1989-05-10

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