US20070264088A1 - Method for Embedding Rock Anchors - Google Patents

Method for Embedding Rock Anchors Download PDF

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Publication number
US20070264088A1
US20070264088A1 US11/665,959 US66595905A US2007264088A1 US 20070264088 A1 US20070264088 A1 US 20070264088A1 US 66595905 A US66595905 A US 66595905A US 2007264088 A1 US2007264088 A1 US 2007264088A1
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United States
Prior art keywords
plastics
feed
drilled hole
internal passage
drill rod
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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.)
Abandoned
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US11/665,959
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English (en)
Inventor
Archibald Richter
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Minova International Ltd
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Individual
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Publication of US20070264088A1 publication Critical patent/US20070264088A1/en
Assigned to MINOVA INTERNATIONAL LIMITED reassignment MINOVA INTERNATIONAL LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RICHTER, ARCHIBALD
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/808—Ground anchors anchored by using exclusively a bonding material
    • 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
    • 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
    • E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
    • 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

Definitions

  • the invention relates to a method for embedding rock anchors according to the preamble of claim 1 .
  • This method is known from DE 102 34 255 A1.
  • a drilling/injection anchor in the form of a drill rod having a central internal passage, is driven into the rock to be consolidated. Flushing with liquid is simultaneously carried out, whereby the drilled hole is widened.
  • injection of a viscous cement mixture takes place through the internal passage of the drill rod, which cement mixture fills the drilled hole and hardens to form a concrete core in which the drill rod remains.
  • curable plastics materials are primarily used instead of concrete. These curable plastics materials are introduced into the drilled hole through a lance after the hole has been drilled and the drill rod withdrawn; the lance is then immediately withdrawn from the hole and a rock anchor driven into the drilled hole, which rock anchor is then bonded by the curable plastics material to the surrounding rock in a secure and load-carrying manner.
  • an anchor rod which may also be the drill rod, is embedded as a rock anchor by filling the drilled hole with a curable plastics material, it being ensured, firstly, that the drilled hole is filled with the plastics material over its entire length and, secondly, that despite the usual overhead working no significant quantities of plastics material escape from the drilled hole.
  • curable components such as unsaturated polyester resins, vinyl esters, epoxy acrylates and silicate resins is used—for example, by admixing peroxides in a volume ratio of 1:1 to 10:1.
  • Suitable curable and hardening plastics are described, for example, in DE 103 15 610 B4, DE 101 24 466 C1 and DE 102 18 718 C1.
  • a major advantage of the invention is that it permits substantially automatic filling of the drilled hole, the latter being filled substantially completely from the tip of the drill rod or rock anchor to the mouth of the drilled hole, and the drill rod or rock anchor being completely encased with the hardened plastics material. An essential safety requirement of mining and tunnelling is thereby fulfilled.
  • the curing time H of the plastics material is determined by the selection of the hardenable plastics material and of the hardening plastics material and optionally of further components, and by the mixing ratio of the components, but also by the temperature of the environment, of the quantitatively major components and of the rock.
  • the feed time F is defined as the time required for complete filling of the flow path of the curable mixture. That is to say that the hardening of the curable plastics material takes place only after mixing of the hardenable and hardening plastics.
  • the flow path is therefore the distance between the mixing point and the mouth (outlet) of the drilled hole. If the mixing of the two components is effected by a static mixer, the mixing point is located at this static mixer. In that case the flow path includes the further internal passage as far as its outlet to the external circumference of the drill, and therefore, generally, as far as the drill tip.
  • the flow path further includes the drilled hole surrounding the anchor rod.
  • the feed time is therefore so calculated that, while taking account of the characteristic curve of the feed rate of the pumps, in particular the pressure-dependence of said characteristic curve, it is sufficient for the volume of the internal passage and the volume of the drilled hole surrounding the anchor rod to be filled.
  • this method has the advantage that the drill tip to be used for hard rock, which is expensive, can be used multiple times.
  • the disadvantage of single use is compensated by the operational advantage that time-consuming work steps are dispensed with.
  • the curable mixture does not form any cavities in the drilled hole and comes into intimate contact with the wall of the drill rod and the wall of the drilled hole.
  • This measure can be used additionally to the flushing of the drilled hole with water usual in the drilling operation, and has the advantage that water residues are blown out of the drilled hole and dried.
  • the drill rod may be provided at its tip with a bore-crown, the cutting teeth of which describe a drilled hole diameter which is greater than the external diameter of the drill rod.
  • the curing of the hardenable plastics component involves an increase in viscosity above the viscous and pasty range.
  • a viscosity of the hardenable component of at least 100 000 Pa ⁇ sec is aimed at, so that the bond between the plastics composition and the drilled hole and the drill rod is so secure that the drill rod cannot be pulled from the drilled hole or rotated therein under the usual operating loads associated with the drilling operation and the injection of the plastics composition.
  • the plastics materials after being brought together and mixed, become crosslinked in a very rapid chemical reaction to form what is here called a pasty mass. This is brought about by admixing suitable substances, such as amines.
  • suitable substances such as amines.
  • handling is simplified and operating safety increased in that, after the components have been brought together and mixed and before the start of the chemical reaction leading to hardening, an increased viscosity (greater than 500 Pa sec, preferably greater than 1000 Pa sec) is attained.
  • This pre-reaction is brought about by admixing to one of the components small quantities of substances having suitable thixotropic properties, for example, from the group of amines.
  • the development according to claim 8 serves to shorten the duration of the drilling and injection process. This prevents plastics composition not yet completely cured from running, dripping or flowing from the internal passage of the drill rod after its detachment from the drill chuck or after detachment of the plastics feed conduit.
  • the characteristic curve of the feed rate of the pumps by which the hardenable component and the hardening component are fed to the internal passage of the drill rod must be taken into consideration.
  • piston pumps in particular radial piston pumps, are especially suitable. These are especially advantageous because a temperature increase of the plastics materials, which could cause a change in the characteristic curve of curing and in particular a shortening of the curing time, is avoided.
  • pumps having a pressure-dependent characteristic curve of feed rate may be used to convey the hardenable plastics material and/or the hardening plastics material.
  • Such pumps for example, gear pumps—have the advantage of simple construction.
  • the pressure-dependent characteristic curve of pump feed rate has the advantage that pressure spikes are avoided.
  • pressure-dependence causes heating; the characteristic curve of curing, and in particular the curing time, must therefore be suitably adapted.
  • the feed of hardenable and/or hardening plastics material is switched off if the feed pressure exceeds a predefined limit value.
  • a run-down programme of the drive motors of the pumps may be switched on, whereby the speed of the pumps is reduced to zero continuously or in steps. Damage to the feed system and possible contamination by one of the plastics components are thereby avoided.
  • the feed time F manually or by an adjustable clock.
  • the aim is to achieve a curing time, and therefore a filling time, of less than one minute.
  • the coordination of filling time and curing time may be carried out by tests, although the characteristic curve of the pump feed rate and the filling volume V of the internal passage and of the drilled holes surrounding the drill rod should be taken at least roughly into account.
  • the algorithm to be applied in coordinating filling time and curing time is given in claim 11 .
  • Claim 12 ensures the safe connection of the plastics feed conduits to the internal passage of the anchor rod/drill rod and avoids unnecessary assembly and adjustment operations serving this purpose.
  • an injection head also called an adapter in this application—which serves firstly as the plastics conduit and secondly as a tool for connecting the internal passage of the anchor rod to the plastics pumps.
  • Claim 13 serves the purpose of avoiding untimely mixing of the components, especially before they have reached the intended mixing point and the static mixer, and therefore of preventing premature curing of the plastics materials and contamination of the conduit systems by hardening plastics materials.
  • Claim 14 serves a similar purpose and at the same time ensures effective cleaning of parts of the feed system where plastics deposits cause malfunction.
  • FIG. 1 shows schematically a drill rod with drill chuck and feed adapters (injection head);
  • FIG. 2 is a feed rate graph
  • FIGS. 3 and 4 show schematically a drill rod with drill chuck and feed adapters (injection head).
  • the drill rod 1 having a bore-crown 2 is driven into a rock 19 of solid stone by the drill chuck 3 .
  • the drill chuck 3 is driven in the feed direction 4 and in the rotational direction 5 .
  • the drill rod consists of a plurality of parts, in this case two, which can be joined together to yield a predefined length by being screwed into a nut 6 .
  • the drill rods are provided on their external circumference with a screw thread which fits into a corresponding thread of the union nut 6 . This thread also serves the purpose of enabling a good connection between the drill rod 1 and the plastics material to be injected into the drilled hole.
  • the bore-crown 2 is fitted with teeth 7 . These teeth 7 define a drilled hole cross-section having a diameter D 1 .
  • the diameter D 1 is greater than the external diameter D A Of the drill rod 1 and therefore also greater than the internal diameter of the thread D I .
  • the internal passage can be supplied, through the drill chuck 3 via suitable adapters, first with water or air as flushing means and then, preferably also via the drill chuck but also via another suitable connecting piece which is illustrated, for example, in FIG. 4 , with a hardenable plastics composition and a hardening plastics material.
  • the injection head/adapter 11 which can be placed on the end face of the connecting piece, here the drill chuck, and which includes internal passages 12 and 13 .
  • the internal passage 12 is connected via the hose 27 and the feed pump 14 to a reservoir 15 for a hardenable plastics composition.
  • the internal passage 13 is significantly smaller in diameter than the internal passage 12 ; its cross-sectional area is approximately 1/10 the cross-sectional area of the internal passage 12 .
  • the internal passage 13 is connected via the hose 25 and a feed pump 16 to a reservoir 17 for the hardening plastics composition.
  • the feed pump 16 is designed correspondingly smaller.
  • the internal passages are brought together within the connecting piece/drill chuck 3 in a collecting chamber 18 which communicates directly with the internal passage 8 of the drill rod.
  • the first segment of the drill rod includes a static mixer 20 at the inlet of its internal passage 8 .
  • a static mixer may also be located at the beginning of each segment.
  • the static mixer is in the form of an insertable component, it is sufficient if such a static mixer 20 is inserted in the internal passage 8 of the last drill rod 1 to be installed.
  • the detail illustration shows an insert component 21 in which a non-return valve/ball valve 22 is integrated, in addition to the static mixer 20 .
  • the insert component 21 may, for example, be screwed via a thread into the internal passage 8 of the last drill rod to be installed before drilling.
  • the method is operated as follows:
  • the drilling process is ended.
  • the collecting chamber 18 of the drilled hole is now charged with air (in a manner not shown) through the internal passage 8 of the drill rod, the drillings being thereby flushed from the drilled hole and the drilled hole being cleaned and dried.
  • the drilled hole is then charged with a hardenable plastics material which has been previously mixed with a hardening plastics material.
  • Charging is effected by the pumps 14 and 16 .
  • These are, for example, radial piston pumps which can provide a pressure-independent feed quantity per time unit.
  • they may also be gear pumps, since, given the high viscosities of the plastics materials to be conveyed, inadmissible losses are not to be expected, so that the delivery law can be determined with sufficient accuracy.
  • the feed rate is now so defined by suitable pre-setting and speeds of the drive motors 24 and 26 of the pumps that, taking account of the characteristic curve of pump feed rate and the delivery law, the quantity of hardenable plastics material and hardening plastics material to be charged is conveyed in precisely the feed time which corresponds to the curing time.
  • the curing time of the plastics material can be determined, on the one hand, by the selection of the plastics components and, on the other, by the mixing ratio and the temperature.
  • the temperature may be assumed to be, for example, 30° C.
  • the hardness to be adopted by the plastics material in the curing time is determined by practical considerations.
  • the plastics material should not emerge freely from the mouth of the drilled hole, but should appear at the mouth of the drilled hole at most as a pasty mass. Moreover, it is advantageous for the speed of the whole drilling and charging operation if the plastics material at the mouth of the drilled hole has cured sufficiently for the drill chuck to be detached from the drill rod without the need to hold the drill rod with special auxiliary means, or to prevent it from falling out of the drilled hole.
  • a viscosity of 100 000 Pa sec may be sufficient, but preferably is exceeded. Through suitable admixtures, pre-crosslinking of the plastics mixture introduced may occur, with an increase in viscosity (see above: more than 500 Pa sec), even before the curing reaction itself begins or takes effect.
  • the non-return valve 22 is provided upstream of the static mixer, opening in the charging direction and preventing the plastics mixture introduced from flowing out of the internal passage in the opposite direction.
  • the connecting piece/drill chuck may be flushed with one of the plastics components or with water.
  • the corresponding apparatus is not illustrated.
  • FIG. 2 shows schematically a feed rate graph of the plastics components conveyed, that is, in particular the hardenable plastics component and hardening plastics component and, optionally, the further admixed substances.
  • the curve of the feed quantity per time unit over time is shown, and above it the corresponding pressure curve in the collecting chamber 18 or at another point.
  • the feed rate depends, on the one hand, on the speed curve of the drive motors of the pumps. In addition, with some types of pump, account must be taken of the pressure-dependence of the feed rate.
  • a constant characteristic curve of feed rate such as that of radial piston pumps, would be ideal. In any case, the aim is that the pumps start running with a progressive action, in order to avoid pressure shocks.
  • the method according to the invention can therefore also be carried out if the hardenable and hardening plastics materials are conveyed during the feed time F at a variable feed rate according to a predetermined curve of feed quantity per time unit, in particular with a delayed and increasing feed rate at the start of the feed time, or if the hardenable and hardening plastics materials are conveyed during the feed time F at a feed quantity per time unit which is pressure-dependent according to a predetermined law.
  • the total feed time is so calculated that the charging quantity within this feed time (represented in the graph by the hatched area below the feed rate curve) corresponds, as described above, to the volume of the internal passage and the drilled hole, and that this feed time corresponds to the curing time.
  • control device 28 it is possible to operate the control device 28 manually or by pre-setting an operating time for the pump motors.
  • control may also be provided via the pressure sensor 23 , by means of which the pumps are switched off or (as illustrated) a run-down switching occurs when the pressure upstream of the mixing device (for example, in the collecting chamber) exceeds a preset limit value G to be determined by experimentation.
  • FIG. 3 differs from the above in that:
  • a connecting piece 3 consists (as shown in the detail illustration of FIG. 4 ) of two half-shells 31 , 32 , each of which has a semicircular recess 33 , 34 along its length. These recesses complement one another in the closed state of the half-shells in the direction of the arrows to form a circular-cylindrical internal passage having varying diameters. The diameters are so designed that in the closed state (as shown in FIG.
  • the internal passage fixes the connecting piece in a form-fitting manner to the injection head 11 on one side and to the anchor rod/drill rod 1 on the other.
  • the injection head therefore has a widened portion 35 which fits into a correspondingly widened diameter of the internal passage 33 , 34 .
  • the internal passage has a coarse internal thread which corresponds to the external thread of the anchor rod/drill rod 1 .
  • the static mixer is located in the connecting piece 3 formed by the half-shells 31 , 32 .
  • the mixing elements 20 are located here, too, in an insert component/mixer housing 21 configured as a circular-cylindrical tube.
  • This tube has at its beginning an outwardly widened portion 36 which, in the closed state of the half-shells 31 , 32 in the direction of the arrows, is enclosed form-fittingly by a corresponding recess in the internal passage of the half-shells 31 , 32 and is fixed both axially and radially.
  • the internal passage of the half-shells 31 , 32 fits snugly around the tube of the mixer housing.
  • the mixer housing 21 is preferably made of plastics material and is only made sufficiently pressure-resistant by its close abutment to the walls of the half-shells firmly pressed together. Furthermore, it is especially important that the mixer housing is also supported form-fittingly in the axial direction at its outlet end, in order to prevent a mixer housing made of plastics material from splitting or rupturing axially.
  • This axial fixing is effected in the example illustrated by abutment of the mixer housing against the end face of the anchor rod/drill rod 1 facing towards it, which anchor rod/drill rod 1 is in turn fixed in the half-shells of the connecting piece.
  • the non-return valve illustrated and described with reference to FIGS. 1 and 3 is not shown in this case, but would also be used here with corresponding advantage.
  • the half-shells Upon expiry of the filling time and completion of the charging of the drilled hole, the half-shells are moved apart (against the arrow direction), so that the anchor rod/drill rod and the injection head are released.
  • the static mixer which, as described, is in the form of a modular unit, may also be ejected, because it is still filled with the hardening plastics mixture. If necessary the injection head and/or the connecting piece 3 are cleaned and a new modular unit is then inserted as the mixer before said components are clamped to another anchor rod/drill rod and charging thereof commences.
  • an extended form of control is also used.
  • the apparatus for charging a drilled hole is switched on and off by the switch 29 , which synchronously activates the two stop valves 38 and 39 in the internal passages 12 , 13 of the injection head 11 , to allow through-flow or to effect pressure-proof blockage.
  • the two pumps 24 , 26 are set in operation by means of the control unit 28 .
  • the stop valves 38 , 39 are synchronously opened by means of the switch 29 , so that the mixing and charging process begins immediately with both components present.
  • the switch 29 again activates the stop valves 38 , 39 , causing synchronous and abrupt closing of the stop valves 38 , 39 . It is thereby ensured that after blocking at the outlet face 37 , i.e. the end face oriented towards the mixer 20 , none of the components can now emerge and cause contamination thereof. It is additionally provided, however, that after opening of the half-shells 31 , 32 , the outlet face is cleaned with a pressurised water jet. At any rate, the outlet face 37 is configured flat and without projections or recesses, so that it can be easily and effectively cleaned.
  • the two pumps build up a higher pressure in the conduits 25 , 27 .
  • This pressure is detected by pressure sensors 23 in each of the conduits and is supplied to the control unit 28 via the lines 40 , 41 .
  • the maximum limit pressure to which are each of the respective conduits may be subjected is stored in the control device. If either of these limit pressures is reached, the control device switches off the pump drive concerned, preferably both pump drives/motors 24 , 26 .
  • the embodiment according to FIG. 4 additionally includes the special feature of the method, that the two plastics components, or their feed lines 12 , 13 , are brought together at a Y- or T-junction in the injection head, at a point located shortly before, or optimally in, the outlet face 37 . Precisely the last-mentioned case facilitates keeping clean, or cleaning, of the outlet face.

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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)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Earth Drilling (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Electrotherapy Devices (AREA)
  • Soil Working Implements (AREA)
US11/665,959 2004-10-21 2005-10-21 Method for Embedding Rock Anchors Abandoned US20070264088A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004051498 2004-10-21
DE102004051498.4 2004-10-21
PCT/DE2005/001880 WO2006042530A1 (fr) 2004-10-21 2005-10-21 Procede de pose d'ancres de roche

Publications (1)

Publication Number Publication Date
US20070264088A1 true US20070264088A1 (en) 2007-11-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/665,959 Abandoned US20070264088A1 (en) 2004-10-21 2005-10-21 Method for Embedding Rock Anchors

Country Status (11)

Country Link
US (1) US20070264088A1 (fr)
EP (1) EP1805395B1 (fr)
CN (1) CN101048574B (fr)
AT (1) ATE480695T1 (fr)
AU (1) AU2005297473B2 (fr)
CA (1) CA2584378C (fr)
DE (2) DE502005010239D1 (fr)
PL (1) PL1805395T3 (fr)
RU (1) RU2376474C2 (fr)
WO (1) WO2006042530A1 (fr)
ZA (1) ZA200702994B (fr)

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US20070177949A1 (en) * 2006-01-31 2007-08-02 Oliver Koehler Adapter member of a rock anchor
US8714884B2 (en) 2008-12-19 2014-05-06 Minova Carbotech Gmbh Rock anchor
WO2016141008A1 (fr) 2015-03-03 2016-09-09 J-Lok Co. Résine à deux composants pouvant être pompée
WO2018096508A1 (fr) * 2016-11-28 2018-05-31 Orica Mining Services South Africa (Pty) Ltd Boulon d'ancrage auto-foreur à mélangeur interne
WO2018096507A1 (fr) * 2016-11-28 2018-05-31 Orica Mining Services South Africa (Pty) Ltd Boulon d'ancrage auto-foreur accouplé
WO2018231117A1 (fr) * 2017-06-14 2018-12-20 Epiroc Rock Drills Aktiebolag Agencement et procédé au niveau d'un renfort de roche
WO2019083430A1 (fr) * 2017-10-27 2019-05-02 Epiroc Rock Drills Aktiebolag Procédé et système pour assurer la qualité d'un mélange à plusieurs composants pour le renforcement de la roche
CN110438989A (zh) * 2019-08-22 2019-11-12 台州市岩土工程有限公司 一种锚索高效安装定位装置及施工方法
US10669848B2 (en) 2016-09-02 2020-06-02 J-Lok Co. Pumpable resin system
SE1950866A1 (en) * 2019-07-08 2021-01-09 Epiroc Rock Drills Ab Nozzle, system and method for securing a bolt in a rock hole
CN112431561A (zh) * 2020-11-03 2021-03-02 河南理工大学 一种小孔径下向钻孔排渣钻杆
US11156217B2 (en) 2017-11-10 2021-10-26 J-Lok Co. Hydraulic and control system for resin injection
US11313227B2 (en) 2018-12-18 2022-04-26 Sylvain Plante Three-in-one drilling, resin and rod insertion device
EP4183974A1 (fr) * 2021-11-17 2023-05-24 DSI Underground Austria GmbH Système de tige creuse assisté par capteur

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WO2007059580A1 (fr) * 2005-11-24 2007-05-31 Peter Andrew Gray Boulon d’ancrage autoperceur
DE102008006234A1 (de) * 2008-01-25 2009-07-30 Friedr. Ischebeck Gmbh Injektionskopf
DE102008006236A1 (de) * 2008-01-25 2009-07-30 Friedr. Ischebeck Gmbh Injektionskopf für Injektionsbohranker
DE102008006233A1 (de) * 2008-01-25 2009-07-30 Friedr. Ischebeck Gmbh Injektionsstutzen
AU2009202836A1 (en) 2008-09-18 2010-04-08 Peter Andrew Gray An injection, sealing, valving and passageway system
RU2584990C2 (ru) * 2011-05-19 2016-05-27 Минова Интернешнл Лтд Способ закрепления тросового анкера
AU2012269719B2 (en) * 2011-06-14 2016-03-17 Geobrugg Ag Resin injection apparatus for drilling apparatus for installing a ground anchor
RU2471602C1 (ru) * 2011-06-16 2013-01-10 Владислав Григорьевич Вохмянин Способ в.г. вохмянина получения отверстий в детали
DE102011078769A1 (de) 2011-07-07 2013-01-10 Hilti Aktiengesellschaft Gesteinsanker
ZA201905567B (en) * 2018-09-13 2022-04-28 Epiroc Holdings South Africa Pty Ltd Rock drill adapted nozzle
MX2021009778A (es) 2019-02-13 2021-10-26 Fci Holdings Delaware Inc Plataforma rodante de inyeccion de resina.
CN113134310A (zh) * 2021-05-21 2021-07-20 长沙矿山研究院有限责任公司 一种适用于动水注浆的静态混合器
EP4279658A1 (fr) * 2022-05-17 2023-11-22 Sika Technology AG Ancrage pourvu de racines artificielles

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AU2005297473A1 (en) 2006-04-27
ZA200702994B (en) 2008-08-27
EP1805395A1 (fr) 2007-07-11
ATE480695T1 (de) 2010-09-15
CN101048574A (zh) 2007-10-03
EP1805395B1 (fr) 2010-09-08
RU2007118695A (ru) 2008-11-27
RU2376474C2 (ru) 2009-12-20
DE102005050929A1 (de) 2006-04-27
CN101048574B (zh) 2011-11-02
WO2006042530A1 (fr) 2006-04-27
CA2584378C (fr) 2014-09-09
AU2005297473B2 (en) 2011-05-12
DE502005010239D1 (de) 2010-10-21
CA2584378A1 (fr) 2006-04-27
PL1805395T3 (pl) 2011-03-31

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