EP0315124B1 - Plug for rock consolidation - Google Patents
Plug for rock consolidation Download PDFInfo
- 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
Links
- 239000011435 rock Substances 0.000 title claims description 5
- 238000007596 consolidation process Methods 0.000 title 1
- 238000003466 welding Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000005065 mining Methods 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 1
- 230000005641 tunneling Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 238000003892 spreading Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
Images
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)
Description
Die Erfindung bezieht sich auf einen Stopfen für die Gebirgsverfestigung, wie für Tränkarbeiten oder für die Ankerung im untertägigen Berg- und Tunnelbau hergestellter Bohrlöcher, nach dem Oberbegriff des Anspruches 1.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
Aus der DE-C-34 04 689 ist ein Stopfen für die Gebirgsverfestigung bekannt. Dieser weist einen elastisch aufweitbaren Rohrkörper auf, der über eine Gewindespannvorrichtung in einem Bohrloch flüssigkeitsdicht zu verankern ist. Zur Verankerung dient ein Beschickungsrohr, das mit dem Stopfen verbunden ist. In der Tiefe des Bohrloches wird der Stopfen zuerst durch leichtes Zurückziehen des Beschickungsrohres in Ausziehrichtung im Bohrloch drehfest festgelegt. Dies wird dadurch erreicht, daß eine auf einem Gewinderohr sitzende Gewindemutter eine Spreizhülse radial aufweitet, die ihrerseits einen relativ dünnen Rohrabschnitt des Stopfens an die Wand des Bohrloches drückt. Bei ungünstigen Bohrlochverhältnissen kann es vorkommen, daß der relativ zum Stopfen erfolgende Rückhub des Gewinderohres nicht erfolgen kann, weil der Bohrlochanker im Bohrloch keinen Halt findet. Die erforderliche Verankerung des Stopfens für die Gebirgsverfestigung ist daher nicht möglich.From DE-C-34 04 689 a plug for rock solidification is known. This 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. 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. If the borehole conditions are unfavorable, it may happen that the return stroke of the threaded pipe, which takes place relative to the plug, cannot take place because the borehole anchor cannot find a hold in the borehole. It is therefore not possible to anchor the plug for rock solidification.
Der Erfindung liegt die Aufgabe zugrunde, einen Stopfen für Bohrlöcher im Gebirge oder im Beton vorzuschlagen, der in Einschieberichtung mittels eines Beschickungsrohres in beliebiger Tiefe des Bohrloches zu fixieren und damit auch belastungssicher und flüssigkeitsdicht durch Betätigen der Gewindespannvorrichtung zu verankern ist, wobei auch das Ablösen eines Beschickungsrohres vom Stopfen gewährleistet sein soll.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.
Die Erfindung löst diese Aufgabe entsprechend dem kennzeichnenden Teil des Anspruches 1.The invention solves this problem according to the characterizing part of
Weitere Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor.Further embodiments of the invention emerge from the subclaims.
Die Vorteile der Erfindung liegen im einfachen Vorfixieren des aus wenigen und einfachen Teilen bestehenden Stopfens im Bohrloch als Vorraussetzung für die Drehbewegung der Gewindespannvorrichtung zum Festsetzen des Stopfens im Bohrloch und in der sicheren Abschraubbarkeit des Beschickungsrohres vom Stopfen.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.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt.An embodiment of the invention is shown in the drawing.
Es zeigt:
- Fig. 1
- einen verkürzt gezeichneten Stopfen im Längsschnitt;
- Fig. 2
- einen Querschnitt II-II nach Fig. 1;
- Fig. 3
- eine Spreizfeder nach Fig. 1;
- Fig. 4
- und 5 weitere Verbindungsmöglichkeiten für die Spreizfeder unmittelbar mit dem Stopfen, in Abweichung von Fig. 1.
- Fig. 1
- a shortened stopper in longitudinal section;
- Fig. 2
- a cross section II-II of FIG. 1;
- Fig. 3
- a spreading spring according to Fig. 1;
- Fig. 4
- and 5 further connection options for the spreading spring directly with the plug, in deviation from FIG. 1.
Ein Verschlußstopfen 1 besteht aus einem Ventilkörper 2 mit Rückschlagventil 3, einem Gewinderohr 4, einer Hülse 5, einer Rückdrehsperre 6, einer Gewindespannvorrichtung 7, einer Spreizfeder 8, drei Näpfe 9 bis 11, einem Rohrkörper 12, und aus einer Kappe 13.A
Die Spreizfeder 8, bestehend aus einer Bodenplatte 14 und drei Arme 15, sichert den Verschlußstopfen 1 in einem Bohrloch axial gegen Herausziehen in Pfeilrichtung 20 und gegen Rotation.The spreading
Die Spreizfeder 8 ist mit dem als Druckplatte dienenden Napf 9 durch Punktschweißen 21 fest verbunden. Der Napf 9 sitzt durch die Schraubverbindungen 2,4,7 mittels Reibschluß verdrehfest auf einem Absatz 22 des Rohrkörpers 12.The spreading
Der als Druckplatte dienende Napf 10 ist in den Rohrkörper 12 einvulkanisiert.The
Der Napf 11 sitzt reibschlüssig auf einem Absatz 23 des Rohrkörpers 12 und gewährleistet den Formschluß zwischen der Hülse 5 und dem Rohrkörper 12.The
Neben dem Punktschweißen 21 ist die Bodenplatte 14 auch unmittelbar mit dem Rohrkörper 12 durch Kleben kraftschlüssig (Fig. 4) oder durch Nocken 16 des Rohrkörpers 12 (Fig. 5) formschlüssig zu verbinden.In addition to
Weiterhin ist die Bodenplatte 14 mit dem Napf 9 durch Zapfen 17 formschlüssig zu verbinden.Furthermore, the
Die Länge 40 der Arme 15 entsprechen deren Durchmesser 41 und sind 25% größer als der Durchmesser 42 des Rohrkörpers 12.The
Die Rückdrehsperre 6 besteht aus der im Rohrkörper 12 verdrehfesten jedoch axial verschiebbaren Hülse 5 mit Rippen 24, wobei die Rippen 24 in Nuten 25 gleitend gelagert sind,
einem Sperrkörper 26 in einer Ausnehmung 27 der Hülse 5, der in eine Nut 28 mit einer Anschlag- und einer Gleitfläche 29,30 eingreift und einer umfangseitigen Begrenzung durch eine Wand 33 des Rohrkörpers 12.The backstop 6 consists of the
a
Eine Gewindemutter 18 ist formschlüssig in der Hülse 5 gehalten und durch eine Fläche 31 und Nocken 32 axial fixiert.A threaded
Der Stopfen 1 wird auf ein Beschickungsrohr 35 aufgeschraubt und dann auf die gewünschte Tiefe im Bohrloch eingebracht. Die Arme 15 der Spreizfeder 8 fixieren den Rohrkörper 12 gegen Rotation oder Herausziehen in Richtung des Pfeiles 20 im Bohrloch. Hierbei greifen die Arme 15 in die rauhe Oberfläche des Bohrloches ein, wobei die Haltewirkung der Arme 15 durch leichtes Anziehen des Beschickungsrohres 35 in Pfeilrichtung 20 noch verstärkt wird. Bei einem Rechtsgewinde des Gewinderohres 4 wird die Gewindespannvorrichtung 7 entsprechend der Richtung des Pfeiles 19 (Fig. 2) in Tätigkeit gesetzt.The
Die Bodenplatte 14 dient als Stirnlager für den über das Beschickungsrohr 35 in Pfeilrichtung 19 gedrehten Ventilkörper 2. Die formschlüssig gehaltene Gewindemutter 18 schiebt die Hülse 5 in Pfeilrichtung 20. Dadurch übt sie einen Druck auf den Napf 10 und auf den zwischen den Näpfen 9,10 liegenden Abschnitt 37 des Rohrkörpers 12 aus. Bei entsprechender Drehbewegung des Beschickungsrohres 35 wölbt sich der Umfang des Rohrkörpers 12 im Abschnitt 37 entsprechend der strichpunktiert gezeichneten Kontur 36. Dies führt zu einer relativ hohen Anpreßkraft des Stopfens 1 an die Wand des Bohrloches. Andererseits preßt sich der Werkstoff des Rohrkörpers an das Gewinderohr an, so daß insgesamt eine feste Verankerung des Stopfens 1 im Bohrloch erreicht wird, die außerdem noch flüssigkeits- und gasdicht ist.The
Bei jeder Umdrehung des Gewinderohres 4 gleitet der Sperrkörper 26 auf der Gleitfläche 30 und am Umfang des Gewinderohres 4 und drückt sich dabei mehr oder weniger in den elastischen Rohrkörper 12 hinein. Der Werkstoff des Rohrkörpers 12 gewährleistet eine gewisse Anpreßkraft des Sperrkörpers 26 am Umfang des Gewinderohres 4 und in der Längsnut 28.With each rotation of the threaded tube 4, the
Ist der feste Sitz des Stopfens 1 im Bohrloch erreicht, wird das Beschickungsrohr 35 in bekannter Weise ein Injektionsmedium durch den Stopfen 1 hindurch eingespritzt. Nach Abschluß der Injektion dichtet das Rückschlagventil 3 den Stopfen 1 ab. Die Linksdrehung des Beschickungsrohres 35, also entgegen der Richtung des Pfeiles 19, bewirkt, daß spätestens nach einer Umdrehung die Fläche 29 am Sperrkörper 26 anliegt und durch den Formschluß der Hülse 5 im Rohrkörper 12 das Gewinderohr 4 arretiert ist. Dadurch kann auch ein festsitzendes Beschickungsrohr 35 vom Ventilkörper 2 abgeschraubt werden. Die Gefahr des Entspannens des Stopfens bei Linksdrehung des Beschickungsrohres 35 ist beseitigt.Once the
Wesentlich für die Erfindung sind
- 1. das durch die
Spannfeder 8 bewirkte unmittelbare Vorfixieren desRohrkörpers 12 im Bohrloch, wodurch über das anschließende Betätigen derGewindespannvorrichtung 7 das endgültige Befestigen desStopfens 1 im Bohrloch erreicht wird und - 2. die Wiederverwendbarkeit des
Beschickungsrohres 35 durch sicheres Abschrauben vomVentilkörper 2 aufgrund der die Befestigung desStopfens 1 im Bohrloch nur unwesentlich beeinträchtigenden Rückdrehsperre.
- 1. the immediate pre-fixing of the
tubular body 12 in the borehole caused by thetension spring 8, whereby the final fastening of theplug 1 in the borehole is achieved via the subsequent actuation of the threadedclamping device 7 and - 2. the reusability of the
feed pipe 35 by securely unscrewing thevalve body 2 due to the fact that the fastening of theplug 1 in the borehole only negligibly affects the backstop.
Bei Bedarf kann neben der dargestellten einzigen Längsnut 28 am Umfang des Gewinderohres 4 zwei oder drei entsprechende Längsnuten 28 vorgesehen sein, so daß die Sperrwirkung bereits nach einem Drehwinkel von bspw. 120° entgegen der Pfeilrichtung 19 vorliegt.If necessary, in addition to the single
Wesentlich ist auch der aus wenigen und einfachen Teilen bestehende Stopfen 1. Der Stopfen 1 ist für einen maximalen Flüssigkeitsdruck des Injektionsmediums bis 300 kp/cm² ausgelegt. Entsprechend bestehen der Ventilkörper 2 und das Gewinderohr 4 aus hochfestem Werkstoff, wie Stahl. Andererseits können diese, als auch andere hochbeanspruchte Teile aus einem geeigneten, jedoch durch die Schrämmaschinen zerspanbaren Werkstoff, wie faserverstärktem Kunststoff, bestehen. Damit wird ein vorzeitiger Verschleiß der Schrämköpfe vermieden.The
Anstelle der Gewindeverbindung von Ventilkörper 2 und Gewinderohr 4, die bei dem maximalen Flüssigkeitsdruck besonders beansprucht wird, ist es auch möglich, die genannten Teile einstückig aus einem geeigneten Werkstoff, wie Stahl oder Kunststoff, herzustellen. Damit entfällt eine Gewindeverbindung. Maßgebend für die Standfestigkeit des aus einem Stück bestehenden, den Stopfen 1 durchsetzenden Teiles sind neben den Werkstoffeigenschaften die jeweils einzuhaltenden Querschnitte.Instead of the threaded connection of
Claims (9)
- A plug for rock strengthening, such as for impregnating work or for the anchorage of drill holes produced in underground mining and tunneling, with an elastically expansible tube body portion lying between pressure plates, a threaded tube (4), at the entry side a drill-hole anchor, a valve body (2) with check valve (3), a threaded socket for a feed tube (35) and at the exit side a threaded clamping device (7) for pressing the tube body portion against the wall of the drill hole wall by means of a sleeve (5) which is only axially displaceable in the tube body (12) and which comprises in a form-locking manner a nut (18) which is screwed to the threaded tube (4), characterised in that the drill-hole anchor is designed as a star-shaped expanding spring (8) having elastic arms (15) which are expanded contrary to the insertion direction (arrow 20) of the plug (1) into the drill hole, in which respect the expanding spring (8) is connected securely to the tube body (12), and provided between the tube body (12) and the threaded tube (4) - namely in the region of the threaded clamping device (7) - is an untwisting lock (6) for the threaded tube (4).
- A plug according to Claim 1, characterised in that the length (40) of the arms (15) and the diameter (41) of the arms (15) at their free end is approximately of the same size and is about 10 to 40% larger than the diameter (42) of the plug (1).
- A plug according to Claim 1, characterised in that a base plate (14) which is in one piece with the expanding spring (8) is bonded to the tube body (12) or connected to it in a form-locking manner.
- A plug according to Claim 1, characterised in that the base plate (14) is securely connected by welding (21) or by form-locking stud (17) to a pressure plate which is designed as a cup (9).
- A plug according to Claim 1, characterised in that the threaded tube (4) has a longitudinal groove (28) and mounted in the sleeve (5) in a window-shaped recess (27) is a radially displaceable locking body (26) which in the clamping rotation direction (19) co-operates with a sliding surface (30) and oppositely thereto co-operates with a stop (29).
- A plug according to Claim 5, characterised in that the cross-section of the longitudinal groove (28) is designed in a sawtooth-shaped manner as a result of an approximately radial stop surface (29) and an approximately tangential sliding surface (30).
- A plug according to Claim 5, characterised in that the locking body (26) is disc-shaped in design.
- A plug according to Claim 1, characterised in that the tube body (12) has a pressure plate (10) which is vulcanised in and on which the axially displaceable sleeve (5) lies.
- A plug according to Claim 1, characterised in that the two ends of the tube body (12) are provided with respectively a cup (9 and 11), the outside diameter of which is smaller than the diameter (42) of the tube body (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3737462 | 1987-11-05 | ||
| DE19873737462 DE3737462A1 (en) | 1987-11-05 | 1987-11-05 | PLUGS FOR MOUNTAIN FASTENING |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0315124A1 EP0315124A1 (en) | 1989-05-10 |
| EP0315124B1 true EP0315124B1 (en) | 1992-04-29 |
Family
ID=6339773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88118186A Expired - Lifetime EP0315124B1 (en) | 1987-11-05 | 1988-11-02 | Plug for rock consolidation |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0315124B1 (en) |
| DE (2) | DE3737462A1 (en) |
Cited By (1)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19509122B4 (en) * | 1995-03-17 | 2004-02-05 | Institut für geowissenschaftliche Gemeinschaftsaufgaben | Seismic pulse device |
| CN109723481B (en) * | 2019-01-08 | 2020-08-14 | 湖北省鄂东南基础工程公司 | Stock tray and end thick liquid stopper integral type structure |
| DE102019121790A1 (en) * | 2019-08-13 | 2021-02-18 | Bernhard Förster Gmbh | Orthodontic expansion screw |
| CN116398082B (en) * | 2023-06-07 | 2023-09-05 | 太原理工大学 | Multi-aquifer packing device, water taking device and water taking method for deep geothermal well |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8121985U1 (en) * | 1981-07-27 | 1981-11-26 | Estel Hoesch Werke Ag, 4600 Dortmund | LOST PLUG |
| DE3313852C1 (en) * | 1983-04-16 | 1984-11-15 | Diehl GmbH & Co, 8500 Nürnberg | Expandable, lost plug for injection boreholes |
| DE3404689C2 (en) * | 1984-02-10 | 1986-09-04 | Diehl GmbH & Co, 8500 Nürnberg | Sealing plugs for synthetic resin injections to consolidate hanging walls in mining |
| DE3625393C1 (en) * | 1986-07-26 | 1992-02-06 | Bergwerksverband Gmbh | Hole plug |
-
1987
- 1987-11-05 DE DE19873737462 patent/DE3737462A1/en not_active Withdrawn
-
1988
- 1988-11-02 EP EP88118186A patent/EP0315124B1/en not_active Expired - Lifetime
- 1988-11-02 DE DE88118186T patent/DE3870578D1/de not_active Expired - Lifetime
Cited By (3)
| 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 (en) * | 2012-08-22 | 2014-02-27 | Red Tractor Pty Ltd | A packing plug |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0315124A1 (en) | 1989-05-10 |
| DE3870578D1 (en) | 1992-06-04 |
| DE3737462A1 (en) | 1989-05-18 |
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