EP2238313B1 - Tube d'ancrage et son procede de production - Google Patents

Tube d'ancrage et son procede de production Download PDF

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Publication number
EP2238313B1
EP2238313B1 EP09703346A EP09703346A EP2238313B1 EP 2238313 B1 EP2238313 B1 EP 2238313B1 EP 09703346 A EP09703346 A EP 09703346A EP 09703346 A EP09703346 A EP 09703346A EP 2238313 B1 EP2238313 B1 EP 2238313B1
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EP
European Patent Office
Prior art keywords
static mixer
tube
anchor
sleeve element
tube bore
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.)
Not-in-force
Application number
EP09703346A
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German (de)
English (en)
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EP2238313A1 (fr
Inventor
Ernst Friedrich Ischebeck
Ferdinand Coerschulte
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.)
Friedr Ischebeck GmbH
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Friedr Ischebeck GmbH
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Publication date
Application filed by Friedr Ischebeck GmbH filed Critical Friedr Ischebeck GmbH
Publication of EP2238313A1 publication Critical patent/EP2238313A1/fr
Application granted granted Critical
Publication of EP2238313B1 publication Critical patent/EP2238313B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • 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
    • E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • E21D20/025—Grouting with organic components, e.g. resin

Definitions

  • the present invention initially relates to a method for the production of anchor tubes for injection anchors, starting from a, preferably hot-rolled, existing as a starting material tube first introduced a static mixer in the tube bore and then in the outer surface of the tube profiling, preferably a length sections or continuously running thread, is rolled under at least local cross-sectional reduction of the pipe bore, and wherein the static mixer is fixed positionally in the longitudinal direction by the reduction in cross-section.
  • Such anchor tubes are used as a component of injection drill anchors, for example. Drilled for solidification in the wall of a mountain, in the wall of a cavity in the open pit, in a subsoil or the like and pressed in the hole formed by means of a hardening grout and thereby secured.
  • the Injetationsbohranker usually has at its front end a drill bit and the anchor interior a longitudinally continuous and central injection channel through which the Verpressmasse can be supplied and having at its front end to the anchor outer side opening outlets.
  • Such an injection anchor may have one or, if necessary, a plurality of anchor tubes connected by means of couplings, which carry an anchor thread on their outer jacket, lengthwise or continuously.
  • the injection head has a flushing head, through which, for example, when drilling a rinsing agent (eg., Air or water) and for pressing a or more feed components are introduced under pressure into the injection channel.
  • a rinsing agent eg., Air or water
  • the preferred compositions also include two-component resins, the two components harden after contact with each other after a short time. Such supply components are therefore supplied separately to the injection head, so that they only meet one another after entry into the injection channel or shortly before in a lost part mounted at the end thereof.
  • the pipe serving as a starting material sometimes even has a non-circular, for example polygonal or even polygonal, bore and / or outer cross section.
  • the desired static mixer must have a diameter so that it can be pushed in axially before the rolling of the profiling in the tube bore. Due to the dimensional and form tolerances mentioned, however, the desired low and uniform tolerancing in the bore cross section is not always achieved, so that the static mixers do not roll into their bores in the known manner in the case of all injection anchors and there is a risk of damaging the static mixers.
  • the invention has the object, advantageously further develop a method of the type mentioned, so that in particular the aforementioned disadvantages are avoided as much as possible.
  • the object is achieved according to the invention first and essentially in conjunction with the features that in the tube bore before rolling of the outer profiling an envelope element is introduced, which surrounds the static mixer in the tube bore at least in a longitudinal section and the one compared to the static mixer having lower hardness.
  • the axial fixation of the static mixer results from the fact that the enveloping element is clamped by the cross-sectional reduction occurring during rolling of the profiling in the tube bore and fixed in the longitudinal direction on the bore wall and, in turn, also undergoes a certain reduction in cross-section with respect to the enveloping element inner cross-section through which the static mixer clamped and fixed in the longitudinal direction of the Hüllelement inner wall.
  • the enveloping element and the static mixer are both held immovably in the tube bore, so that is quasi speak of a two-stage in the radial direction of press-fitting.
  • the enveloping element has a lower hardness and / or a lower strength than the static mixer.
  • the tubes used for the production of anchor tubes are usually made of steel or a comparable material with therefore comparatively high hardness and strength.
  • the material of the enveloping element also has a lower hardness and / or a lower strength in comparison to the outer anchor tube. It is preferred that the material of the Hüllettis compared to the materials of static mixer and anchor tube the lowest hardness and / or the lowest strength having.
  • the anchor tube can have the highest hardness and / or strength of all components.
  • the sheath element has at least on its surface a lower compared to the static mixer and thus also to the armature tube hardness, this compensates for the tolerances described above, without causing damage to the static mixer.
  • Tolerances of the tube, which the static mixer can not compensate can be compensated by the envelope element due to its easier compared to the static mixer deformability.
  • the invention thus makes it possible that static mixers can also be rolled into starting material or in anchor tubes with comparatively larger tolerances, so that on the one hand the quality of the finished anchor tubes improved and on the other hand costs can be saved.
  • a length section of a pipe or a hose can be used as the envelope element, wherein this section preferably has the same length as the static mixer, but could also deviate therefrom.
  • the enveloping element is a separate part from the static mixer. It is also preferred that this tube piece or the piece of tubing has such good deformability, so that it is still slightly deformable by hand with respect to its cross-section within certain limits. In this way, the insertion is facilitated even in a non-circular tube bore even with little play and the compensation of larger tolerances.
  • the sheath element can preferably have a comparatively low modulus of elasticity. Well suited in this respect is also an elastically deformable plastic or rubber hose.
  • the static mixer is first introduced into the enveloping element and then both parts are introduced together into the bore of the primary material or into the tubular bore.
  • the outer cross section of the enveloping element in particular whose outer diameter is about the same size or slightly smaller than the pipe bore cross-section, in particular as the pipe bore diameter, before the rolling of the profiling.
  • a static mixer is used whose cross section, in particular its outer diameter, is approximately the same size or slightly smaller than the hollow cross section, in particular the inner diameter, of the enveloping element.
  • the possibility that this is inserted with the static mixer inserted therein in a tube bore, for example.
  • non-circular eg. Polygonal or polygonal
  • the anchor tubes also serve as a starting material tubes, the whole, including on the outer lateral surface non-round (eg. Polygonal or polygonal) are bounded.
  • a static mixer may be used which has in its longitudinal direction adjacent, circumferentially twisted to each other Spiralwindungsabexcellente whose preferably rib-like outer edge is located on an imaginary cylindrical envelope surface.
  • the static mixer has angular or even sharp edges on its outer edges, these can cut slightly into the softer enveloping element during rolling over or profile rolling in, whereby an additional compensation of tolerances and improved axial fixation is made possible.
  • An expedient development of the method provides that the static mixer and the enveloping element are introduced into the tube bore leaving a free end portion of the tube bore.
  • a subsequent method step may be that the end section of the tube bore, preferably after the rolling of the profiling, is widened in its diameter, preferably drilled thereto, and then finished on the surface.
  • This processing can be carried out in particular in a separate end processing station, wherein the chips formed during the processing of the end portion of the other side, ie by the already fixed Static mixer through, can be blown out. Furthermore, there is the possibility that in the widened end section at least one front longitudinal section of an injection nozzle, which has an internal cavity, separate inlet openings for the anchor rod to be supplied with different supply components and arranged on the front longitudinal section outlet opening, is pressed axially frictionally. If necessary, a protective cap can be placed on the rear end of the injection nozzle protruding from the pipe bore.
  • Such a combination of an anchor rod with end axially non-positively injected injection nozzle is in the context of the invention also independently, ie without the other features mentioned, important.
  • the unit formed from the anchor rod and the injection nozzle can be pre-assembled in larger quantities and then fed to an injection head for drilling and grouting Bohrinjekomsankern particular magazines for automated operation.
  • an injection head for drilling and grouting Bohrinjekomsankern particular magazines for automated operation.
  • the injection nozzle can be inserted into a rotatable inner part of the flushing head, for example, in a recess geometrically adapted to its rear longitudinal section.
  • the invention further relates to an anchor pipe for injection anchors, in the outer lateral surface of a profiling, preferably a lengthwise or continuously extending thread, is rolled and in the tube bore a static mixer in the longitudinal direction positionally determined by the rolling of the profiling, at least local reduction in cross-sectional area of the pipe bore is.
  • the invention has the object, advantageously further develop such an anchor tube, so that in particular the disadvantages described are avoided as much as possible.
  • the stated object is achieved according to the invention first and essentially in conjunction with the features that the static mixer is surrounded at least in a longitudinal section within the tube bore of a Hüllelement having a lower compared to the static mixer hardness, and that the Hüllelement and the static mixer in the longitudinal direction positionally determined by the rolling of the profiling resulting at least local reduction in cross-section. It is preferably provided that the material of the Hülliatas has a lower hardness and / or lower strength than the material of the static mixer, but in so far also sufficient if a corresponding gradation. Regarding. The coming into contact surfaces is given. With regard to the effects and advantages achievable by the invention as well as to possible developments thereof, reference is made to the preceding and the following description.
  • a tube piece or a piece of tubing is provided as the envelope element.
  • a static mixer made of plastic and a sheath element made of plastic or rubber are combined.
  • an elastic plastic tube whose cross-section is deformable by hand.
  • the enveloping element and the static mixer have the same lengths.
  • the static mixer it is preferred that this has longitudinally adjacent, circumferentially twisted spiral winding sections whose preferably rib-like outer edge lies against an imaginary cylindrical envelope surface.
  • the static mixer and the enveloping element can be arranged in the tube bore leaving one end portion.
  • At least one front longitudinal section of an injection nozzle which has an inner cavity, separate inlet openings for the anchor rod to be supplied to different supply components and arranged at the front longitudinal section outlet opening, be pressed axially frictionally.
  • Said injection nozzle can preferably made of plastic, more preferably be made of polyamide, in particular in one piece as a plastic injection molded part.
  • FIGS. 1 to 7 With reference to the FIGS. 1 to 7 is the inventive method for the production of anchor tubes 1 according to a preferred approach and with reference to the FIGS. 4 to 7 the anchor tube 1 according to the invention according to a likewise preferred embodiment and a possible development described.
  • the Figures 1 and 1a show an example for its production as a semi-finished or pre-material serving hot-rolled tube 2, which, for example, a (shortened) total length of 2.5m (or deviating therefrom) and, for example, a diameter in the size range of 30-40mm (or deviating thereof).
  • it is a steel tube with a tube bore 3 running through it in the middle along the longitudinal direction L.
  • FIG. 1 shows an example for its production as a semi-finished or pre-material serving hot-rolled tube 2, which, for example, a (shortened) total length of 2.5m (or deviating therefrom) and, for example, a diameter in the size range of 30-40mm (or deviating thereof).
  • it is a steel tube with a
  • the tube bore 3 has a round, but deviating from an exact circular shape by schematically indicated tolerances cross-section, so the diameter is so far only approximately D 1 .
  • the outer surface 4 of the tube 2 is approximately cylindrical, that is subject to certain (not shown) tolerances.
  • the Figures 2, 2a show an enveloping element 5, which in the example chosen is a longitudinal section of a plastic tube.
  • this plastic may be polyethylene (PE) or polyamide (PA), for example with a yield stress of 15-45 N / mm 2 .
  • Its outer diameter D 2 is about the same size or slightly smaller than that Diameter D 1 .
  • the diameter D 1 of the non-circular tube bore is approximately 12-13 mm (also depending on the measured direction) and the diameter D 2 is 12.5 mm, with a wall thickness of the envelope element 5 of 1.25 mm.
  • FIG. 3 shows a so-called static mixer 6 according to a preferred embodiment.
  • This is made of plastic, in the specific example of polyacetal (POM), whose yield stress is in the range of about 65-75 N / mm 2 .
  • POM polyacetal
  • the overall one-piece, shortened by the departure shown static mixer 6 has in the example a total length of 600mm and has 48 so-called baffles which lie one behind the other in the longitudinal direction L.
  • Each baffle 7 is formed from two in the same length section at 180 ° to each other angularly twisted Spiralwindungsabexcellenten 8, which in turn extend over each half a revolution.
  • Baffles 7 adjacent to one another in the longitudinal direction L each have opposite helical pitches and are angularly offset from one another by a quarter turn about the longitudinal axis, so that the structure can be traversed in the longitudinal direction L.
  • the rib-like outer edge 9 of the Spiralwindungsabitese 8 has angular edges, wherein the outer edges 9 at an imaginary cylindrical, in the FIGS. 3 and 3a indicated by dashed lines envelope 10 are.
  • the static mixer 6 has an outer diameter D 4 which , like the inner diameter D 3 of the enveloping element 5, is approximately 10 mm. It is understood, however, that deviations from all of the aforementioned dimensions, in particular diameters and their ratios, are also possible within the scope of the invention.
  • the plastic selected for the enveloping element 5 has a lower hardness and easier deformability than the plastic chosen for the static mixer 6.
  • the static mixer 6 is first in the envelope 5, which in the example has the same length, inserted and then both nested parts 5, 6 together through an end opening 11 in the longitudinal direction L in the tube bore. 3 inserted and inserted therein from the end face of the tube 2 by a distance A, leaving an end portion 12.
  • the sheath element 5 and the static mixer 6 can be due to the low hardness and strength of the Hüllettis 5 and the selected size ratios described above easily up to this, even in FIG. 5 shown, insert the longitudinal position.
  • FIG. 4 shows the webs 15 and grooves 16 of the anchor thread 13, which in the FIGS. 5 to 7 is shown diagrammatically simplified only.
  • the rolling or rolling of the anchor thread 14 is under a compressive stress, which leads to a certain compression and thereby reducing the transverse to the longitudinal direction L oriented pipe cross-section. Specifically, it also comes through the deformations occurring at least a local cross-sectional reduction of the pipe bore.
  • FIG. 5 shows schematically simplified in sectional view that the inner surface 17 of the tube bore 3 now rests flat against the outer side of the enveloping element 5 due to the reduction in cross-section caused by the rolling, wherein the (in FIG. 5 not graphically illustrated) dimensional and dimensional tolerances of the bore 3 are compensated by the comparatively softer enveloping element 5 by corresponding local deformations.
  • the (in FIG. 5 not graphically illustrated) dimensional and dimensional tolerances of the bore 3 are compensated by the comparatively softer enveloping element 5 by corresponding local deformations.
  • Einwalz there is the possibility that it either only in the area of the thread grooves 16 or along the entire thread to a certain constriction or cross-sectional reduction of the tube bore 3 comes.
  • the diameters D 1 to D 4 are matched to one another and to the rolling conditions and the enveloping element 5 such that the constriction of the tube bore 3 also leads to a certain compression of the enveloping element 5 and to a reduction in its hollow cross-section, ie to a reduction in its inside diameter D 3 leads.
  • the inner surface 18 of the Hüllimplantations 5 is pressed radially inwardly against the rib-like outer edge 9 of the Spiralwindungsabexcellente 8 of the static mixer 6.
  • the comparatively lower hardness of the Hüllelements 5 also in the walls of certain deformations, by which tolerances are compensated.
  • FIG. 6 shows the anchor tube 1 according to another, according to a preferred embodiment of the method possible method step.
  • the end portion 12 of the pipe bore 3 has been slightly enlarged over the original diameter D 1 , drilled in the selected example and then finished.
  • a processing of the end face 19 has been made to make them flat as shown.
  • FIG. 7 shows as a preferred further possibility that in the enlarged end portion 12, a front longitudinal portion 20 of an injection nozzle 21 was pressed axially frictionally.
  • the injection nozzle 21 has an internal cavity 22 with prepared separate inlet openings 23, 24 for various supply components to be supplied to the anchor rod 1 during the compression operation and an outlet opening 25 provided on the front longitudinal portion 20, which opens into the tube bore 3 serving as the injection channel.
  • the diameter of the end portion 12 was so on the outer diameter of the longitudinal section 20 of the injection nozzle 21, or to the outer diameter of the provided therein, in FIG. 7 Not shown, axially spaced annular ridges adapted to pull out the injection nozzle 21 from the anchor tube 1, a large pulling force would be required.
  • the rearward length portion 26 is provided to enter at an injection head for supplying the supply components (for example, the two components of a two-component resin) on a rotationally driven inner part in a geometrically adapted recess so that the prepared inlet openings 23, 24 with Outlet ports of separate supply lines for the supply components are aligned.
  • a torque transmitting connection of the anchor rod 1 is possible by screwing its armature thread 13 into a suitable threaded hole in the rotationally driven inner part of the flushing head.
  • Another special feature of the injection nozzle 21 is that its inlet openings 23, 24 are closed before use for the first time by predetermined breaking points in the form of wall thickness reductions.

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  • 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)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Piles And Underground Anchors (AREA)
  • Forging (AREA)
  • Dowels (AREA)

Claims (15)

  1. Procédé de fabrication de tubes d'ancrage pour des ancres à injection avec un mélangeur statique fixé en position en direction longitudinale, où, en partant d'un tube, en particulier laminé à chaud, au moins un mélangeur statique est introduit dans son perçage tubulaire et, ensuite, dans la surface d'enveloppe extérieure du tube, un profilage, en particulier un filetage, s'étendant par tronçons de longueur ou de manière continu, est façonné par dudgeonnage avec au moins une diminution locale de la section transversale du perçage tubulaire, et où le mélangeur statique est fixé en position dans la direction longitudinale, en conséquence de la diminution de section transversale, caractérisé en ce que, dans le perçage tubulaire (3), avant le façonnage par dudgeonnage du profilage (13), est introduit un élément formant gaine (5), entourant le mélangeur statique (6) situé dans le perçage tubulaire (3), au moins dans un tronçon de longueur du mélangeur statique (6), et présentant une dureté plus faible que celle du mélangeur statique (6).
  2. Procédé selon la revendication 1, caractérisé en ce qu'une pièce tubulaire ou une pièce de tuyau souple est utilisée comme élément formant gaine (5).
  3. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, d'abord, le mélangeur statique (6) est introduit dans l'élément formant gaine (5) et, ensuite, les deux parties sont introduites conjointement dans le perçage tubulaire (3).
  4. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'est utilisé un élément formant gaine (5) dont la section transversale extérieure, en particulier dont le diamètre extérieur, est à peu près égal ou un peu inférieur à la section transversale de perçage tubulaire, en particulier le diamètre extérieur, avant le façonnage par dudgeonnage du profilage (13).
  5. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'est utilisé un mélangeur statique (6) dont la section transversale, en particulier dont le diamètre extérieur, est à peu près égal ou un peu inférieur à la section transversale creuse, en particulier le diamètre intérieur, de l'élément formant gaine (5).
  6. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'est utilisé un mélangeur statique (6) présentant des tronçons d'enroulement en spirale (8), voisins en direction longitudinale (L), tournés les uns par rapport aux autres en périphérie, dont le bord extérieur (9), en particulier du genre de nervures, est situé sur une surface d'enveloppe (10) cylindrique imaginaire.
  7. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le mélangeur statique (6) et l'élément formant gaine (5) sont
    introduits dans le perçage tubulaire (3) en laissant subsister un tronçon d'extrémité (12) libre du perçage tubulaire (3).
  8. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le tronçon d'extrémité (12) du perçage tubulaire (3), en particulier avant le façonnage par dudgeonnage du profilage (13), est élargi quant à son diamètre, en particulier agrandi par perçage et, ensuite, soumis à un usinage fin sur la surface.
  9. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, dans le tronçon d'extrémité (12) élargi, au moins un tronçon de longueur avant (20) d'une tubulure d'injection (21), présentant un espace creux intérieur (22), des ouvertures d'entrées (23, 24) séparées, pour différents composants d'alimentation à amener à la tige d'ancre (1), ainsi qu'une ouverture de sortie (25), disposée sur le tronçon de longueur avant (20), est enfoncé axialement, avec une liaison à interaction de forces.
  10. Tube d'ancrage pour ancre à injection, dans sa surface d'enveloppe extérieure, est façonné par dudgeonnage un profilage, en particulier un filetage, s'étendant par tronçons de longueur ou de manière continu et, dans son perçage tubulaire, un mélangeur statique est fixé en position dans la direction longitudinale, en conséquence de la diminution de section transversale, au moins locale, résultant lors du façonnage par dudgeonnage du profilage, du perçage tubulaire, caractérisé en ce que le mélangeur statique (6) situé dans le perçage tubulaire (3) est entouré par un élément formant gaine (5), au moins dans un tronçon de longueur du mélangeur statique (6), en ce que l'élément formant gaine présente une dureté plus faible que celle du mélangeur statique (6), et en ce que l'élément formant gaine (5) et le mélangeur statique (6) sont fixés en position en direction longitudinale (L), par suite de la diminution de section transversale, au moins locale, résultant lors du façonnage par dudgeonnage du profilage (13).
  11. Tube d'ancrage selon la revendication 10, caractérisé en ce qu'une pièce tubulaire ou une pièce de tuyau souple est utilisée comme élément formant gaine (5).
  12. Tube d'ancrage selon l'un ou les deux revendications 10, 11, caractérisé en ce qu'est prévu un mélangeur statique (6) en matière synthétique et un élément formant gaine (5) en matière synthétique ou en caoutchouc.
  13. Tube d'ancrage selon l'une ou plusieurs des revendications 10 à 12 précédentes, caractérisé en ce que le mélangeur statique (6) présente des tronçons d'enroulement en spirale (8), voisins en direction longitudinale (L), tournés les uns par rapport aux autres en périphérie, dont le bord extérieur (9), en particulier du genre de nervures, est situé sur une surface d'enveloppe (10) cylindrique imaginaire.
  14. Tube d'ancrage selon l'une ou plusieurs des revendications 10 à 13 précédentes, caractérisé en ce que le mélangeur statique (6) et l'élément formant gaine (5) sont disposés dans le perçage tubulaire (3) en laissant subsister un tronçon d'extrémité (12) du perçage tubulaire (3).
  15. Tube d'ancrage selon l'une ou plusieurs des revendications 10 à 14 précédentes, caractérisé en ce que, dans le tronçon d'extrémité (12), est enfoncé axialement, avec une liaison à interaction de forces, au moins un tronçon de longueur avant (20) d'une tubulure d'injection (21), qui présente un espace creux intérieur (22), des ouvertures d'entrées (23, 24) séparées, pour les différents composants d'alimentation à amener à la tige d'ancre (1), ainsi qu'une ouverture de sortie (25), disposée sur le tronçon de longueur avant (20).
EP09703346A 2008-01-25 2009-01-08 Tube d'ancrage et son procede de production Not-in-force EP2238313B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008006235A DE102008006235A1 (de) 2008-01-25 2008-01-25 Ankerrohr und Verfahren zu dessen Herstellung
PCT/EP2009/050156 WO2009092630A1 (fr) 2008-01-25 2009-01-08 Tube d'ancrage et son procédé de production

Publications (2)

Publication Number Publication Date
EP2238313A1 EP2238313A1 (fr) 2010-10-13
EP2238313B1 true EP2238313B1 (fr) 2011-11-16

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EP (1) EP2238313B1 (fr)
CN (1) CN101925721B (fr)
AT (1) ATE533919T1 (fr)
AU (1) AU2009207825C1 (fr)
CA (1) CA2713190C (fr)
DE (1) DE102008006235A1 (fr)
WO (1) WO2009092630A1 (fr)
ZA (1) ZA201004186B (fr)

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CN103867219B (zh) * 2014-03-25 2015-08-05 中国石油大学(华东) 一种用于涡压挤扩细石混凝土锚固支护土体的设备及方法
CN108797368A (zh) * 2018-08-27 2018-11-13 中国冶集团有限公司 钢箱拱桥锚管的快速找正方法
KR20230026138A (ko) 2021-08-17 2023-02-24 삼성전자주식회사 복수의 이전 신호들에 기초하여 dpsk를 수행하는 통신 장치 및 이의 동작 방법

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CN2406064Y (zh) * 1999-09-27 2000-11-15 李云义 锚注式锚杆
DE10321175B3 (de) * 2003-05-12 2004-08-26 Carbotech Fosroc Gmbh Injektionsanker
CN100513745C (zh) * 2005-11-11 2009-07-15 中国京冶工程技术有限公司 机械扩孔锚杆施工方法
DE102007005540B4 (de) 2006-02-24 2015-04-23 Friedr. Ischebeck Gmbh Verfahren und Injektionsanker mit fixiertem Statikmischer
CN200943205Y (zh) * 2006-07-03 2007-09-05 于艳芳 土体锚杆施工用锚杆组合件

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AU2009207825B2 (en) 2014-06-05
CA2713190A1 (fr) 2009-07-30
WO2009092630A1 (fr) 2009-07-30
ATE533919T1 (de) 2011-12-15
AU2009207825A1 (en) 2009-07-30
CN101925721B (zh) 2013-03-13
EP2238313A1 (fr) 2010-10-13
ZA201004186B (en) 2011-08-31
CA2713190C (fr) 2015-10-13
CN101925721A (zh) 2010-12-22
AU2009207825C1 (en) 2014-06-26
DE102008006235A1 (de) 2009-07-30

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