EP0800615B1 - Rod for an anchor inserted by drilling and injection grouting - Google Patents

Rod for an anchor inserted by drilling and injection grouting Download PDF

Info

Publication number
EP0800615B1
EP0800615B1 EP96900026A EP96900026A EP0800615B1 EP 0800615 B1 EP0800615 B1 EP 0800615B1 EP 96900026 A EP96900026 A EP 96900026A EP 96900026 A EP96900026 A EP 96900026A EP 0800615 B1 EP0800615 B1 EP 0800615B1
Authority
EP
European Patent Office
Prior art keywords
thread
anchoring rod
rod according
drilling
rod
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
EP96900026A
Other languages
German (de)
French (fr)
Other versions
EP0800615A1 (en
Inventor
Johann Helbling
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.)
H Weidmann AG
Original Assignee
H Weidmann 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 H Weidmann AG filed Critical H Weidmann AG
Publication of EP0800615A1 publication Critical patent/EP0800615A1/en
Application granted granted Critical
Publication of EP0800615B1 publication Critical patent/EP0800615B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0053—Anchoring-bolts in the form of lost drilling rods
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/006—Anchoring-bolts made of cables or wires

Definitions

  • anchors for securing walls, the roof or the tunnel face used.
  • an impact or rotary drill with a drill pipe first Drilled holes and then set the anchors, which for example, can be designed as adhesive anchors.
  • drilling injection anchors are suggested (e.g. EP-B-355 379). They consist of one Steel pipe that carries a drill bit at the front and with the back at the Drill can be connected. After drilling, the Drill uncoupled and injection material through the pipe pressed in. Then the protruding pipe end screwed a clamping nut, which against a pressure plate presses the tunnel wall.
  • a disadvantage of this Bohr injection anchor is their susceptibility to corrosion, and if the cavity protection should only work temporarily, e.g. on a tunnel face or in coal mining, so the secured wall has to be dismantled later, prepare the massive steel tubes of these injection anchors at later dismantling difficulties.
  • the present invention has for its object the above Fix disadvantages. This task is accomplished through the combination of features of claims solved.
  • Anchor rods made of fiber-reinforced plastic are known per se (e.g. US-A-4 664 573 and EP-A-94 908). These well-known anchor rods have unidirectionally oriented fibers in the longitudinal direction and therefore only have a low torsional strength. As They are therefore not suitable for drilling injection anchors.
  • the pipe and the also has helically wound fibers the torsional strength of the pipe compared to known plastic anchor rods much bigger. Therefore, they can Drilling required torques transmitted via the anchor rod will. Surprisingly, it has been shown that the fiber-reinforced Plastic rod also the blows of the impact drill transferred to the drill bit with only minor losses. So far, this was not considered possible because of the professional world assumed that the plastic dampened the blows too much.
  • the anchor rod according to the invention is corrosion-resistant and machinable, so that as a drilling injection anchor for permanent and temporary attachment can be used easily. At the later dismantling of a fixed wall, it is easily cut.
  • the anchor rod according to the invention has the same tensile strength also significantly lighter than the well-known steel injection anchors. This makes handling, storage and transportation made easier.
  • an anchor tube 1 is composed of a Tubular body 2 and an external round thread 3 molded therein with thread root 4 round in axial section and thread comb 5 shown.
  • the tubular body 2 consists of a fiber-reinforced Thermoset. It has both longitudinal fibers 6 and helical wound fibers 7, the opposite sense of slope is to the pitch of the thread 3. This is the Tubular body 2 through the fibers 7 when transmitting an im attractive sense of the thread 3 acting torque radially compressed. This also increases the strength of the rod on torsion and pressure.
  • the fibers 7 are preferably predominant arranged in the outer region of the tube 1.
  • the thread 3 is in the embodiment of Figure 1 in the tubular body by pressing using a molded body before the finished curing of the thermoset of the tubular body 2, which from the thread base 4 material displaced the mold cavity for fills the thread comb. This ensures optimal strength of the thread.
  • the molded body is one in the circumferential direction multi-part sleeve with centering means and can e.g. out a thermoplastic.
  • the thread 3 however, also be cut into the tubular body 2.
  • the other The end of the anchor tube 1 is identical.
  • Figure 2 shows a variant in which the thread 3 on one the tubular body 2 molded or glued sleeve 8 is.
  • the sleeve 8 can be made of a fiber-reinforced thermoset or consist of a metallic material.
  • Figure 3 shows the structure of an injection drill anchor.
  • a thread 3 of the tube 1 becomes a drill bit 12 with a Internal thread 13 screwed on.
  • the crown 12 lies with one Shoulder 14 on the end face 9 of the tube 1 and has rinsing and injection channels 15 which are connected to the axial bore 10 of the Communicate tube 1.
  • the crown has 12 on the face e.g. chisel-like cutting edges 16.
  • the crown 12 can also be designed differently.
  • On the other thread 3 is a sleeve 17 with a corresponding one Internal thread 18 screwed in half. In the protruding end of the sleeve 13 becomes a threaded pin Screwed in drill.
  • the drilling process can then begin be, through the bore 10 and the channels 15 a Detergent, e.g. Air or water. If the anchor is to be longer than an anchor tube 1, so when reached a predetermined drilling depth of the threaded pin of the drill unscrewed from the sleeve 17, the drill is retracted and a second tube is screwed into the sleeve 17. On their another end 17 is screwed on and the Drilling continued.
  • a Detergent e.g. Air or water.
  • FIG. 4 shows a further embodiment of the thread 3 shown.
  • the tubular body is not yet fully hardened 2 is a sliver with the pitch of the thread on the end 3 wound up so that the bottom of the thread is somewhat constricted becomes.
  • Two half shells 20 are placed on this preformed thread a thin-walled sleeve 21 made of steel pressed radially.
  • the Thread 3 is pressed into the half-shells 20.
  • the two Half shells 20 collide in a common axial plane and grip with several projections 22 and matching incisions 23 into each other along the dividing line.
  • the two half shells 20 are welded along the dividing line at several points, e.g. after the tungsten inert gas process.
  • a sleeve 24 made of steel with a the end face 9 adjacent flange 25 is used.
  • This embodiment has the advantages that the Steel sleeve 21 in the axial direction with the tubular body 2 is connected and the thread 3 considerably less for seizing tends as a thread formed in plastic.
  • the flange 25 serves the purpose.
  • the sleeve 24 supports the tubular body 3 against radial compression. With training after Figure 4 is therefore easier to extend the tube Loosen anchor tube 1 from the threaded pin of the drill.

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)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Dowels (AREA)

Abstract

The anchor rod proposed consists of a fibre-reinforced plastic tube (1) containing both longitudinally oriented and helically wound fibres (6, 7) and fitted at each end with a thread (3). This design enables the turning forces necessary for drilling to be transmitted through the rod. The rod is corrosion-resistant and can be machined, thus allowing it to be inserted by drilling and subseqent injection grouting for both permanent and temporary reinforcement of the walls of hollow structures.

Description

Im Untertagebau, zum Beispiel im Tunnelbau oder im Bergbau, werden vielfach Anker zur Sicherung von Wänden, der Firste oder der Tunnelbrust verwendet. Ueblicherweise werden dazu mittels einer Schlag- oder Drehbohrmaschine mit einem Bohrgestänge zunächst Löcher gebohrt und anschliessend die Anker gesetzt, welche zum Beispiel als Klebeanker ausgebildet sein können.In underground construction, for example in tunnel construction or in mining, are often anchors for securing walls, the roof or the tunnel face used. Usually this is done using an impact or rotary drill with a drill pipe first Drilled holes and then set the anchors, which for example, can be designed as adhesive anchors.

Schwierigkeiten bereitet dieses Vorgehen, wenn in weichem Gestein gebohrt wird, das leicht einbricht. Beim Herausziehen des Bohrgestänges kann die Bohrlozhwand einbrechen, sodass der Anker anschliessend nicht mehr gesetzt werden kann. Um dieser Schwierigkeit zu begegnen, sind Bohr-Injektionsanker vorgeschlagen worden (z.B. EP-B-355 379). Sie bestehen aus einem Stahlrohr, das vorn eine Bohrkrone trägt und hinten mit der Bohrmaschine verbunden werden kann. Nach dem Bohren wird die Bohrmaschine abgekuppelt und durch das Rohr Injektionsmaterial eingepresst. Anschliessend wird auf das vorstehende Rohrende eine Spannmutter aufgeschraubt, welche eine Druckplatte gegen die Tunnelwand presst. Ein Nachteil dieser Bohr-Injektionsanker ist ihre Korrosionsanfälligkeit, und falls die Hohlraumsicherung nur temporär wirken soll, z.B. an einer Tunnelbrust oder im Kohlebergbau, die gesicherte Wand also später abzubauen ist, bereiten die massiven Stahlrohre dieser Injektionsanker beim späteren Abbau Schwierigkeiten.This procedure creates difficulties when in soft rock is drilled that breaks easily. When pulling out the Drill pipe can break the drilling wall, causing the anchor can then no longer be placed. To this Difficulty to deal with, drilling injection anchors are suggested (e.g. EP-B-355 379). They consist of one Steel pipe that carries a drill bit at the front and with the back at the Drill can be connected. After drilling, the Drill uncoupled and injection material through the pipe pressed in. Then the protruding pipe end screwed a clamping nut, which against a pressure plate presses the tunnel wall. A disadvantage of this Bohr injection anchor is their susceptibility to corrosion, and if the cavity protection should only work temporarily, e.g. on a tunnel face or in coal mining, so the secured wall has to be dismantled later, prepare the massive steel tubes of these injection anchors at later dismantling difficulties.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die obigen Nachteile zu beheben. Diese Aufgabe wird durch die Merkmalskombination der Ansprüche gelöst.The present invention has for its object the above Fix disadvantages. This task is accomplished through the combination of features of claims solved.

Ankerstäbe aus faserverstärktem Kunststoff sind an sich bekannt (z.B. US-A-4 664 573 und EP-A-94 908). Diese bekannten Ankerstäbe haben unidirektional in Längsrichtung orientierte Fasern und weisen deshalb nur eine geringe Torsionsfestigkeit auf. Als Bohr-Injektionsanker sind sie daher nicht geeignet.Anchor rods made of fiber-reinforced plastic are known per se (e.g. US-A-4 664 573 and EP-A-94 908). These well-known anchor rods have unidirectionally oriented fibers in the longitudinal direction and therefore only have a low torsional strength. As They are therefore not suitable for drilling injection anchors.

Weil bei der erfindungsgemässen Ausbildung das Rohr nebst längsgerichteten auch wendelförmig gewickelte Fasern hat, ist die Torsionsfestigkeit des Rohres gegenüber bekannten Kunststoff-Ankerstäben wesentlich grösser. Deshalb können die zum Bohren erforderlichen Drehmomente über den Ankerstab übertragen werden. Ueberraschenderweise hat sich gezeigt, dass der faserarmierte Kunststoffstab auch die Schläge der Schlag-Bohrmaschine nur mit geringen Verlusten auf die Bohrkrone überträgt. Dies wurde bisher nicht für möglich gehalten, weil die Fachwelt davon ausging, der Kunststoff dämpfe die Schläge zu stark ab.Because with the design according to the invention, the pipe and the also has helically wound fibers the torsional strength of the pipe compared to known plastic anchor rods much bigger. Therefore, they can Drilling required torques transmitted via the anchor rod will. Surprisingly, it has been shown that the fiber-reinforced Plastic rod also the blows of the impact drill transferred to the drill bit with only minor losses. So far, this was not considered possible because of the professional world assumed that the plastic dampened the blows too much.

Der erfindungsgemässe Ankerstab ist korrosionsfest und zerspanbar, sodass er als Bohr-Injektionsanker zur permanenten und temporären Befestigung problemlos eingesetzt werden kann. Beim späteren Abbau einer befestigten Wand wird er problemlos zerspant. Der erfindungsgemässe Ankerstab ist bei gleicher Zugfestigkeit ausserdem bedeutend leichter als die bekannten Stahl-Injektionsanker. Dadurch wird die Handhabung, die Lagerung und der Transport erleichtert.The anchor rod according to the invention is corrosion-resistant and machinable, so that as a drilling injection anchor for permanent and temporary attachment can be used easily. At the later dismantling of a fixed wall, it is easily cut. The anchor rod according to the invention has the same tensile strength also significantly lighter than the well-known steel injection anchors. This makes handling, storage and transportation made easier.

Nachfolgend werden Ausführungsbeispiele der Erfindung anhand der Zeichnung erläutert. Darin zeigt:

Figur 1
Einen Axialschnitt durch einen Teil eines Ankerstabes,
Figur 2
eine zweite Ausführungsform,
Figur 3
einen Ankerstab mit Hülse und Bohrkrone, und
Figur 4
eine dritte Ausführungsform.
Exemplary embodiments of the invention are explained below with reference to the drawing. It shows:
Figure 1
An axial section through part of an anchor rod,
Figure 2
a second embodiment,
Figure 3
an anchor rod with sleeve and drill bit, and
Figure 4
a third embodiment.

In Figur 1 ist ein Ende eines Ankerrohres 1 bestehend aus einem Rohrkörper 2 und einem darin eingeformten Aussen-Rundgewinde 3 mit im Axialschnitt rundem Gewindegrund 4 und Gewindekamm 5 dargestellt. Der Rohrkörper 2 besteht aus einem faserarmierten Duroplast. Er hat sowohl längsgerichtete Fasern 6 als auch wendelförmig gewickelte Fasern 7, deren Steigungssinn entgegengesetzt ist zum Steigungssinn des Gewindes 3. Dadurch wird der Rohrkörper 2 durch die Fasern 7 beim Uebertragen eines im anziehenden Sinne des Gewindes 3 wirkenden Drehmomentes radial komprimiert. Dies erhöht zusätzlich die Festigkeit des Stabes auf Torsion und Druck. Die Fasern 7 sind vorzugsweise überwiegend im äusseren Bereich des Rohres 1 angeordnet. Das Gewinde 3 ist bei der Ausführungsform nach Figur 1 in den Rohrkörper durch Pressen mittels eines Formkörpers vor dem fertigen Aushärten des Duroplasten des Rohrkörpers 2 eingeformt, wobei das aus dem Gewindegrund 4 verdrängte Material den Formhohlraum für den Gewindekamm füllt. Dadurch wird eine optimale Festigkeit des Gewindes erzielt. Der Formkörper ist eine in Umfangsrichtung mehrteilige Hülse mit Zentriermitteln und kann z.B. aus einem Thermoplasten bestehen. Alternativ kann das Gewinde 3 jedoch auch in den Rohrkörper 2 geschnitten sein. Das andere Ende des Ankerrohres 1 ist identisch ausgebildet.In Figure 1, one end of an anchor tube 1 is composed of a Tubular body 2 and an external round thread 3 molded therein with thread root 4 round in axial section and thread comb 5 shown. The tubular body 2 consists of a fiber-reinforced Thermoset. It has both longitudinal fibers 6 and helical wound fibers 7, the opposite sense of slope is to the pitch of the thread 3. This is the Tubular body 2 through the fibers 7 when transmitting an im attractive sense of the thread 3 acting torque radially compressed. This also increases the strength of the rod on torsion and pressure. The fibers 7 are preferably predominant arranged in the outer region of the tube 1. The thread 3 is in the embodiment of Figure 1 in the tubular body by pressing using a molded body before the finished curing of the thermoset of the tubular body 2, which from the thread base 4 material displaced the mold cavity for fills the thread comb. This ensures optimal strength of the thread. The molded body is one in the circumferential direction multi-part sleeve with centering means and can e.g. out a thermoplastic. Alternatively, the thread 3 however, also be cut into the tubular body 2. The other The end of the anchor tube 1 is identical.

Figur 2 zeigt eine Variante, bei der das Gewinde 3 an einer auf den Rohrkörper 2 aufgegossenen oder aufgeklebten Hülse 8 geformt ist. Die Hülse 8 kann aus einem faserarmierten Duroplast oder aus einem metallischen Werkstoff bestehen.Figure 2 shows a variant in which the thread 3 on one the tubular body 2 molded or glued sleeve 8 is. The sleeve 8 can be made of a fiber-reinforced thermoset or consist of a metallic material.

Figur 3 zeigt den Aufbau eines Injektions-Bohrankers. Auf das eine Gewinde 3 des Rohres 1 wird eine Bohrkrone 12 mit einem Innengewinde 13 aufgeschraubt. Die Krone 12 liegt mit einer Schulter 14 an der Stirnfläche 9 des Rohres 1 an und hat Spül- und Injektionskanäle 15, die mit der axialen Bohrung 10 des Rohres 1 kommunizieren. An der Stirnfläche hat die Krone 12 z.B. meisselartige Schneiden 16. Je nach dem zu bohrenden Gestein kann die Krone 12 jedoch auch anders ausgebildet sein. Auf das andere Gewinde 3 ist eine Hülse 17 mit einem entsprechenden Innengewinde 18 zur Hälfte aufgeschraubt. In das vorstehende Ende der Hülse 13 wird ein Gewindezapfen einer Bohrmaschine eingeschraubt. Hierauf kann der Bohrvorgang begonnen werden, wobei durch die Bohrung 10 und die Kanäle 15 ein Spülmittel, z.B. Luft oder Wasser, gepresst wird. Wenn der Anker länger sein soll als ein Ankerrohr 1, so wird bei Erreichen einer vorgegebenen Bohrtiefe der Gewindezapfen der Bohrmaschine aus der Hülse 17 ausgeschraubt, die Bohrmaschine zurückgefahren und ein zweites Rohr in die Hülse 17 eingeschraubt. Auf deren anderes Ende wird eine weitere Hülse 17 aufgeschraubt und der Bohrvorgang fortgesetzt.Figure 3 shows the structure of an injection drill anchor. On the a thread 3 of the tube 1 becomes a drill bit 12 with a Internal thread 13 screwed on. The crown 12 lies with one Shoulder 14 on the end face 9 of the tube 1 and has rinsing and injection channels 15 which are connected to the axial bore 10 of the Communicate tube 1. The crown has 12 on the face e.g. chisel-like cutting edges 16. Depending on the rock to be drilled However, the crown 12 can also be designed differently. On the other thread 3 is a sleeve 17 with a corresponding one Internal thread 18 screwed in half. In the protruding end of the sleeve 13 becomes a threaded pin Screwed in drill. The drilling process can then begin be, through the bore 10 and the channels 15 a Detergent, e.g. Air or water. If the anchor is to be longer than an anchor tube 1, so when reached a predetermined drilling depth of the threaded pin of the drill unscrewed from the sleeve 17, the drill is retracted and a second tube is screwed into the sleeve 17. On their another end 17 is screwed on and the Drilling continued.

Wenn die erforderliche Bohrtiefe erreicht ist, wird die Bohrmaschine und die äusserste Hülse 17 entfernt. Ueber die Bohrung 10 wird Injektionsmaterial ins Bohrloch eingepresst. Schliesslich wird über das vorstehende Ende des Ankerrohres 1 eine Ankerplatte geschoben und eine Mutter auf das Gewinde 3 aufgeschraubt und gegen die Ankerplatte festgezogen.When the required drilling depth is reached, the drilling machine and the outermost sleeve 17 removed. Over the hole 10 injection material is pressed into the borehole. Finally becomes an anchor plate over the protruding end of the anchor tube 1 pushed and a nut screwed onto the thread 3 and tightened against the anchor plate.

In Figur 4 ist eine weitere Ausführungsform des Gewindes 3 dargestellt. Bei noch nicht fertig ausgehärtetem Rohrkörper 2 wird auf dessen Ende ein Faserband mit der Steigung des Gewindes 3 so aufgewickelt, dass der Gewindegrund etwas eingeschnürt wird. Auf dieses vorgeformte Gewinde werden zwei Halbschalen 20 einer dünnwandigen Hülse 21 aus Stahl radial aufgepresst. Das Gewinde 3 ist in den Halbschalen 20 eingepresst. Die beiden Halbschalen 20 stossen in einer gemeinsamen Axialebene zusammen und greifen mit mehreren Vorsprüngen 22 und passenden Einschnitten 23 längs der Trennlinie ineinander. Die beiden Halbschalen 20 sind längs der Trennlinie an mehreren Punkten verschweisst, z.B. nach dem Wolfram Inertgas Verfahren. In das Ende der Bohrung 10 ist eine Hülse 24 aus Stahl mit einem an der Stirnfläche 9 anliegenden Flansch 25 eingesetzt.FIG. 4 shows a further embodiment of the thread 3 shown. If the tubular body is not yet fully hardened 2 is a sliver with the pitch of the thread on the end 3 wound up so that the bottom of the thread is somewhat constricted becomes. Two half shells 20 are placed on this preformed thread a thin-walled sleeve 21 made of steel pressed radially. The Thread 3 is pressed into the half-shells 20. The two Half shells 20 collide in a common axial plane and grip with several projections 22 and matching incisions 23 into each other along the dividing line. The two half shells 20 are welded along the dividing line at several points, e.g. after the tungsten inert gas process. In the End of the bore 10 is a sleeve 24 made of steel with a the end face 9 adjacent flange 25 is used.

Diese Ausführungsform hat vor allem die Vorteile, dass die Stahlhülse 21 in Achsrichtung formschlüssig mit dem Rohrkörper 2 verbunden ist und das Gewinde 3 erheblich weniger zum Anfressen neigt als ein in Kunststoff ausgebildetes Gewinde. Demselben Zweck dient der Flansch 25. Die Hülse 24 stützt den Rohrkörper 3 gegen radiale Kompression ab. Mit der Ausbildung nach Figur 4 ist es daher leichter, das Rohr zur Verlängerung des Ankerrohres 1 vom Gewindezapfen der Bohrmaschine zu lösen.This embodiment has the advantages that the Steel sleeve 21 in the axial direction with the tubular body 2 is connected and the thread 3 considerably less for seizing tends as a thread formed in plastic. The same The flange 25 serves the purpose. The sleeve 24 supports the tubular body 3 against radial compression. With training after Figure 4 is therefore easier to extend the tube Loosen anchor tube 1 from the threaded pin of the drill.

Claims (10)

  1. Anchoring rod for a drilling injection anchor, consisting of a fiber-reinforced plastic tube (1) which contains both longitudinallly and helically coiled fibers (6, 7) and has a thread (3) at both ends.
  2. Anchoring rod according to Claim 1, wherein the thread (3) is a round thread having axially a round thread ridge (5) and a round thread root (4).
  3. Anchoring rod according to Claim 1 or 2, wherein the thread (3) is welded upon the tube body (2) or moulded or cut into the tube body (2).
  4. Anchoring rod according to Claim 1 or 2, wherein the thread (3) is formed in a sleeve (8, 21) which is glued upon the tube body (2).
  5. Anchoring rod according to Claim 4, wherein the sleeve (21) consists of at least two shell parts (20) which are radially pressed upon the tube body (2).
  6. Anchoring rod according to Claim 5, wherein the shell parts (20) interlock along the separation lines with a plurality of projections (22) and corresponding recesses (23).
  7. Anchoring rod according to Claim 5 or 6, wherein the shell parts (20) are welded together at a plurality of locations.
  8. Anchoring rod according to one of Claims 1 to 7, wherein the helically coiled fibers (7) have at least to the greater extent the opposed gradient direction with respect to the two threads (3).
  9. Anchoring rod according one of Claims 1 to 8, wherein the helically coiled fibers (7) are arranged to the greater extent in the outer region of the tube (1).
  10. Anchoring rod according to one of Claims 1 to 9, wherein the two threads (3) are exterior threads.
EP96900026A 1995-01-06 1996-01-05 Rod for an anchor inserted by drilling and injection grouting Expired - Lifetime EP0800615B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH36/95 1995-01-06
CH3695 1995-01-06
PCT/CH1996/000003 WO1996021087A1 (en) 1995-01-06 1996-01-05 Rod for an anchor inserted by drilling and injection grouting

Publications (2)

Publication Number Publication Date
EP0800615A1 EP0800615A1 (en) 1997-10-15
EP0800615B1 true EP0800615B1 (en) 1998-12-02

Family

ID=4177882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96900026A Expired - Lifetime EP0800615B1 (en) 1995-01-06 1996-01-05 Rod for an anchor inserted by drilling and injection grouting

Country Status (6)

Country Link
EP (1) EP0800615B1 (en)
JP (1) JPH10512025A (en)
AT (1) ATE174103T1 (en)
AU (1) AU4296296A (en)
DE (1) DE59600905D1 (en)
WO (1) WO1996021087A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057711B3 (en) * 2004-11-30 2006-09-21 Hilti Ag Anchoring element for fixing in a mineral base such as concrete or masonry comprises a thermoset encasing part surrounding an anchor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106695B4 (en) * 2001-02-14 2010-11-25 Friedr. Ischebeck Gmbh Drill bit for a drill or injection anchor
SE0100915L (en) * 2001-03-15 2002-09-16 Atlas Copco Rock Drills Ab Procedure for reinforcing rock and soil masses and rock bolts for the practice of the process
DE10219155C1 (en) * 2002-04-29 2003-12-18 Welser Profile Ag A metal mining plug
EP1680559B1 (en) 2003-10-10 2009-12-23 Erico International Corporation Device comprising a rod made of fiber-reinforced plastic for transferring a load through a heat-insulating layer
DE102006025248A1 (en) * 2006-05-29 2007-12-06 Beltec Industrietechnik Gmbh Fiber reinforced plastic drilling anchor
NO20210696A1 (en) * 2021-06-02 2022-12-05 Tunnelsupply As Strut for anchoring fittings in tunnels and rock rooms

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2749068A1 (en) * 1977-11-02 1979-05-03 Gebirgssicherung Gmbh Mine anchorage rod embedded in hardening resin - has flexible externally roughened inner plastics sleeve around glass fibre rods
DE3806128A1 (en) * 1988-02-26 1989-09-07 Ischebeck Friedrich Gmbh DRILL INJECTION ANCHOR
DE4018703C1 (en) * 1990-06-12 1991-08-01 Johannes Radtke Improved cable anchor - includes several laminations and has fixing at end towards bottom of bore hole
GB2262970B (en) * 1991-12-19 1995-02-15 Bridon Plc Flexible roof bolt
DE4209265A1 (en) * 1991-12-21 1993-06-24 Dyckerhoff & Widmann Ag DEVICE FOR ANCHORING A ROD-SHAPED TENSION LINK MADE OF FIBER COMPOSITE MATERIAL
DE4204533C2 (en) * 1992-02-15 1994-03-17 Gd Anker Gmbh & Co Kg Injection drill anchor
DE9317336U1 (en) * 1993-11-12 1994-01-27 Buddenberg, Heinrich, 47447 Moers Injection rope anchor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057711B3 (en) * 2004-11-30 2006-09-21 Hilti Ag Anchoring element for fixing in a mineral base such as concrete or masonry comprises a thermoset encasing part surrounding an anchor

Also Published As

Publication number Publication date
EP0800615A1 (en) 1997-10-15
JPH10512025A (en) 1998-11-17
AU4296296A (en) 1996-07-24
DE59600905D1 (en) 1999-01-14
WO1996021087A1 (en) 1996-07-11
ATE174103T1 (en) 1998-12-15

Similar Documents

Publication Publication Date Title
DE19836370C2 (en) Process for the production of fastening devices for rods, posts, masts or the like in the ground and fastening devices produced according to this process
EP0394179B1 (en) Combined rigid profile and extension anchor with expansion element
EP0014426B1 (en) Rock anchor
EP0948701B1 (en) Process and device for simultaneously drilling and lining a hole
WO1993001363A1 (en) Injection pipe and process for setting a rock anchor
DE3100804C2 (en) "Injection packer for borehole closures in masonry or natural rock"
EP0800615B1 (en) Rod for an anchor inserted by drilling and injection grouting
DE2611676A1 (en) METHOD AND DEVICE FOR DRILLING GROUND HOLES FOR SOUND ANCHORS
EP1724416A2 (en) Foundation system for the securing of a rod or postlike item in the ground and socket type receiving part therefor
EP1818499A1 (en) Apparatus for simultaneously drilling and casing boreholes
DE2133593B2 (en) Underground tension anchor for building components - has separate driving and enveloping tubes for later insertion of anchor
EP1407115B1 (en) Connecting an anchoring rod to a drilling tool
DE19503122B4 (en) injection anchor
EP0056255A1 (en) Device for fixing objects to a concrete wall
DE2019533C3 (en) Method for producing a prestressed VerpreBanker
DE4201419C1 (en) Rock anchor for location in rock with low cohesion factor - comprises outer bore anchor for making borehole and stabilising hole wall and injection anchor of hardenable material
DE2353652C2 (en) Removable grouted anchor with lost anchor body
DE3633628A1 (en) ANCHORING ELEMENT, IN PARTICULAR DOWEL
DE3926787C2 (en) Method and device for inserting and anchoring a tensile pile
DE4032682C2 (en) Mountain anchors
DE4211334C1 (en) Rock anchor for insertion in poorly cohesive rock - comprises bore anchor producing hole and stabilising hole walling and injection anchor inserted with hardenable medium
EP0697530B1 (en) Anchoring bolt for concrete or similar
DE4233304A1 (en) Coupling sleeve for drill or anchor rods - comprises abutment for limiting rod end screwing distance
CH693934A5 (en) Method for earth and rock anchor bore drilling uses drill crown to which drill pipe is attached to define annular space for evacuation of hardened material
DE2707304A1 (en) MULTI-PART RECESSED ADHESIVE ANCHOR

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19970707

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE GB IT LI

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19980210

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE GB IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19981202

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981202

REF Corresponds to:

Ref document number: 174103

Country of ref document: AT

Date of ref document: 19981215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

Ref country code: CH

Ref legal event code: EP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990105

REF Corresponds to:

Ref document number: 59600905

Country of ref document: DE

Date of ref document: 19990114

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19981202

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20031120

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20031212

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050802

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL