EP1087063A1 - Dispositif de forage et d'ancrage et procédé de mise en place de tirants d'ancrage - Google Patents
Dispositif de forage et d'ancrage et procédé de mise en place de tirants d'ancrage Download PDFInfo
- Publication number
- EP1087063A1 EP1087063A1 EP00120588A EP00120588A EP1087063A1 EP 1087063 A1 EP1087063 A1 EP 1087063A1 EP 00120588 A EP00120588 A EP 00120588A EP 00120588 A EP00120588 A EP 00120588A EP 1087063 A1 EP1087063 A1 EP 1087063A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drilling
- injection
- tool
- tube
- cement
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims description 67
- 238000004873 anchoring Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 title claims description 17
- 238000002347 injection Methods 0.000 claims abstract description 60
- 239000007924 injection Substances 0.000 claims abstract description 60
- 239000004568 cement Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000000725 suspension Substances 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 3
- 241000125205 Anethum Species 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000004459 forage Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- 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
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
- the present invention relates to an anchoring device and a method of setting in place of anchor rods intended to ensure the stability of a structure by with respect to land, involving the drilling of a hole into an area anchoring in the ground, the introduction of cables and / or other reinforcements pulling in the borehole, and the injection by said borehole of a suspension of cement so as to form a sealing body in said anchoring area.
- EP-A-0413676 describes a process of the aforementioned type according to which tool is used which has a drilling tool part and has a axial channel extending an injection channel, a valve being arranged at the inlet of said axial channel so as to allow said inlet to be closed before injection of a suspension of pressurized cement through the central channel and said channel axial.
- the document EP 0 770 734 describes a method according to which drilling is carried out by means of a tube provided, at its front end, with a drilling tool and injection tube, this tube forming a cement injection channel and said tool having at least two side nozzles oriented in directions opposite, and comprising a drilling tool part having an axial channel extending said injection channel, a valve being disposed between the inlet of said axial channel and said nozzles, so as to close said inlet before injection of the pressurized cement suspension, which is injected said cement suspension in the surrounding ground through said nozzles, radially to said tube, with a pressure greater than about 40 MPa (400 bars), by rotating this tube around its axis and raising it, by continuously or discontinuously, over a determined sealing length, that the injection is then stopped and the tube is completely reassembled, the said cables and / or other tie rods being introduced into the borehole, before the cement hardens, right down to the sealing body training.
- a drilling tool and injection tube this tube forming a cement
- the invention aims to provide an anchoring device and a method of positioning improved anchor rods, in particular a device and a method, respectively, of the aforementioned type where the anchoring is further improved and the operation of setting up anchor rods simplified and faster.
- the method according to the invention comprises the operation of performing the drilling by means of a drilling column comprising a drilling tube provided, at its front end, an injection tool and a drilling tool coupled to the injection tool, this tube forming a cement injection channel and said tool injection system comprising at least one or more nozzles allowing injection of a suspension of pressurized cement in the surrounding ground to form a sealing body, characterized in that the drilling tool is attached to one or more tie rods or other tie rods, as said cement suspension is injected into the surrounding soil and around tie rods and the drilling tool, and that the tube is reassembled entirely leaving the drilling tool in the sealing body.
- the drilling and anchoring device comprises a column comprising a tube drill, a drill tool mounted at the end of the tube and one or more cables and / or other tie rods, characterized in that the cables and / or other tie rods are attached to the drilling tool, so that the tool drilling remains in a sealing body formed by the injection of cement in the surrounding terrain of the drill hole.
- the injection tool is preferably provided with at least two side nozzles oriented in opposite directions and at least one end nozzle oriented obliquely towards the central axis of the tube in which the cables and / or other tie rods.
- the drilling tool has a part coupling which slides axially in the tube axially separable.
- pressurized water is brought in through a channel axial to the drilling tool.
- the axial channel can be formed by a tube inside coaxial with the drill pipe.
- the inner tube can be fitted with a valve, for example in its upper part, to control the supply of water under drilling tool pressure during drilling operation and during operation of the ascent of the drill string after formation of the body of sealing.
- the space between the drill pipe and the inner pipe can form the channel cement injection.
- the end nozzle is tilted at an acute angle to the direction axial, for example at 30 °, so that the cement suspension jet exiting this nozzle applies a force component in the direction axial on the drilling tool. This allows the drilling tool to be separated from the tube drilling during the formation of the sealing body. On the other hand, this nozzle ensures that cables and / or other tie rods are completely embedded in the sealing body.
- the device and method according to the invention thus make it possible to achieve a very good anchoring with very few operations and great speed.
- the invention also makes it possible to avoid problems which may be linked to the reintroduction of tie rods in the process borehole conventional.
- the attachment of the tie rods to the drilling tool and the insertion beforehand in the drill pipe allow to optimize the density of reinforcements placed in the axial channel of the tube.
- Attachment of the drilling tool to the end of the tie rods improves also the retention of these reinforcements in the sealing body.
- a work to anchor 1 rests on a part of land 2 and is stabilized by an anchor, designated as a whole by the reference 3.
- This anchoring tie comprises, in a known manner, for example cables of pulling 4 constituted by strands of which one end is fixed in a head of pulling 5 in support on the structure 1.
- the tie cables 4 are arranged in a borehole 6 on a certain free length and are integral with a sealing body 7 in the form of a bulb formed around the lower part of the borehole by injection of cement under high pressure in the surrounding terrain.
- Fig. 1 gives that a schematic representation of an example of a tie rod, the technique anchor being well known in itself.
- the present invention consists in using, for example, a drill stand comprising a drilling tube 8 provided with an injection tool 9 coupled to a tool drilling 12 according to FIG. 2 to drill, at first, hole 6 on a length corresponding to the desired free length and the length of sealing which is essentially that of bulb 7 of FIG. 1.
- the borehole 12 is attached to the ends of the tie cables 4, for example by welds 17 or by mechanical clamping means such as keys.
- the drilling tool 12 and the tie cables 4 are threaded into the channel central 10 of an inner tube 21 coaxial with the drilling tube 8, before the drilling operation.
- the drill pipe 8 has a length, without partitions, at the less equivalent to the length of the tie rods.
- the drilling tool 12 is coupled to the injection tool 9, axially separable, by teeth complementary 18, or other known mechanical means allowing driving in rotation of the drilling tool 12 by the injection tool 9.
- the tool drilling 12 preferably comprises a part of tube 19 which threads into the central channel 10 to allow its radial positioning and retention by compared to the injection tool 9.
- the drilling operation is accompanied by an injection of water or a mixture of water and air through the central channel 10 and its extension 11 in the tool injection. Water is injected into the borehole through one or more channels 20 extending axially through the drilling tool.
- a suspension of cement at a very high pressure for example 450 bar
- the injection channels 15 are connected to an injection channel 15 'formed between the wall of the drill pipe 8 and the wall of the inner tube 21.
- a valve (not shown) is arranged in the part upper part of the drill pipe to close the central channel 10 during injection cement.
- the tube is rotated around its axis and is withdrawn slowly, so that the jets produced by the nozzles 13 and 14 in opposite radial directions enter the ground creating an essentially cylindrical bulb, as shown in FIG. 1.
- the injection pressure is preferably between 500-800 bars.
- the injection nozzles 13, 14, 16 may become blocked by impurities or coarse elements in the cement causing overpressures in the injection channel 15 '.
- the cement injection pump can have a solenoid valve to trigger the pump during a overpressure.
- the solenoid valve may not have time to fire sufficiently early to avoid crushing the inner tube.
- the drill string is provided with a mechanical fuse part 22 comprising a part of drilling tube 8 'and a part of inner tube 21' forming between they an injection channel 15 '.
- the mechanical fuse part 22 is arranged at proximity to the injection head 23, so that in the event of deformation, the fuse can be easily exchanged without removing the drill string from the hole before the end of the cement injection operation.
- the inner tube portion 21 'of the fuse part 22 has a smaller wall thickness than the inner tube 21 of the drill string or some other weakening, so that the part of inner tube 21 'crashes more easily than inner tube 21. The crushing of the part of the inner tube 21 causes the escape of the pressure in the central channel 10, preventing damage to the inner tube main 21.
- the tool 12 and the tie cables When reassembling the drill pipe 8, including the inner pipe 21, the tool 12 and the tie cables remain in place and become integral with the bulb 7 during hardening thereof.
- the inclined end nozzle 16 projects a jet against the drilling tool 12 so that the tool is pushed towards the bottom of the borehole for that the injection tool 9 is reassembled, thus separating the drilling tool from the tool injection.
- the end nozzle being inclined towards the central channel 10, it also ensures very good filling of the borehole with cement injected, so the tie cables are completely embedded in the body sealing.
- the drilling tool attached to the ends of the cables pulling improves their anchoring.
- the present invention allows in all application cases to shorten and simplify the implementation procedure places tie rods, while providing reliable, well-controlled anchoring and with great resistance in all types of terrain.
Abstract
Description
Claims (10)
- Procédé de mise en place de tirants d'ancrage selon lequel on effectue le forage au moyen d'un tube (8) muni, à son extrémité frontale, d'un outil d'injection (9) et d'un outil de forage (12) couplé à l'outil d'injection, ce tube ayant un canal d'injection de ciment (15, 15') et ledit outil d'injection comportant au moins une ou plusieurs buses (13, 14, 16) permettant l'injection d'une suspension de ciment sous pression dans le terrain environnant pour former un corps de scellement (7), caractérisé en ce que l'outil de forage est attaché à un ou plusieurs câbles de tirant (4) ou d'autres armatures de tirant, que l'on injecte ladite suspension de ciment dans le terrain environnant et autour des armatures de tirant et de l'outil de forage, et que l'on remonte le tube entièrement en laissant l'outil de forage dans le corps de scellement.
- Procédé de mise en place de tirants d'ancrage selon la revendication 1, caractérisé en ce que l'on tourne le tube de forage (8, 8') autour de son axe central lors de son remontage.
- Dispositif de forage et d'ancrage comportant un tube de forage (8), un outil de forage (12) monté à l'extrémité du tube et un ou plusieurs câbles (4) et/ou d'autres armatures de tirant, caractérisé en ce que les câbles et/ou d'autres armatures de tirant sont attachés à l'outil de forage, de sorte que l'outil de forage reste dans un corps de scellement (7) formé par l'injection de ciment dans le terrain environnant d'un trou de forage (6).
- Dispositif de forage et d'ancrage selon la revendication 3, caractérisé en ce qu'il comporte un tube intérieur (21, 21') coaxial avec le tube de forage, formant entre eux un canal d'injection du ciment, et le tube intérieur formant un canal central (10) dans lequel s'étendent le câble et/ou d'autres armatures de tirants.
- Dispositif de forage et d'ancrage selon la revendication 4, caractérisé en ce qu'il comporte une partie de fusible mécanique (22) munie d'une partie de tube de forage (8') et une partie de tube intérieur (21') coaxiale avec la partie de tube de forage, la partie de tube intérieur (21') de la partie de fusible ayant une résistance mécanique à l'écrasement plus faible que le tube intérieur (21).
- Dispositif de forage et d'ancrage selon la revendication précédente, caractérisé en ce que la partie de fusible mécanique (22) est disposée à proximité de la tête d'injection (23) du dispositif.
- Dispositif de forage et d'ancrage selon l'une des revendications 3 à 6, caractérisé en ce que l'outil de forage (12) est couplé à un outil d'injection de façon axialement séparable, l'outil d'injection comprenant des buses d'injection du ciment (13, 14, 16).
- Dispositif de forage et d'ancrage selon la revendication précédente, caractérisé en ce qu'il y a au moins deux desdites buses d'injection du ciment qui sont disposées de façon radialement opposée dans l'outil d'injection.
- Dispositif selon la revendication précédente, caractérisé en ce que lesdites buses d'injection disposées de façon radialement opposée sont dirigées de sorte que le ciment est injecté dans une direction essentiellement orthogonale à l'axe centrale du tube de forage.
- Dispositif de forage selon l'une des revendications 7 à 9, caractérisé en ce qu'au moins une des buses d'injection (16) est dirigée vers l'outil de foragepour faciliter la séparation de l'outil d'injection de l'outil de forage pendant l'injection du ciment.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00120588A EP1087063B1 (fr) | 1999-09-23 | 2000-09-20 | Dispositif de forage et d'ancrage et procédé de mise en place de tirants d'ancrage |
AT00120588T ATE434088T1 (de) | 1999-09-23 | 2000-09-20 | Bohr- und ankervorrichtung und verfahren zum setzen von verpressankern |
DK00120588T DK1087063T3 (da) | 1999-09-23 | 2000-09-20 | Indretning til boring og forankring samt fremgangsmåde til installering af trækankre |
ES00120588T ES2327311T3 (es) | 1999-09-23 | 2000-09-20 | Dispositivo de perforacion y de anclaje y procedimiento de colocacion de tirantes de anclaje. |
DE60042385T DE60042385D1 (de) | 1999-09-23 | 2000-09-20 | Bohr- und Ankervorrichtung und Verfahren zum Setzen von Verpressankern |
US09/721,328 US6588986B1 (en) | 1999-09-23 | 2000-11-22 | Device for drilling and anchoring and process for placing grout anchors |
CY20091100884T CY1109621T1 (el) | 1999-09-23 | 2009-08-20 | Διαταξη διατρησης και αγκυρωσης και μεθοδος τοποθετησης ραβδων αγκυρωσης |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99810852 | 1999-09-23 | ||
EP99810852 | 1999-09-23 | ||
EP00120588A EP1087063B1 (fr) | 1999-09-23 | 2000-09-20 | Dispositif de forage et d'ancrage et procédé de mise en place de tirants d'ancrage |
US09/721,328 US6588986B1 (en) | 1999-09-23 | 2000-11-22 | Device for drilling and anchoring and process for placing grout anchors |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1087063A1 true EP1087063A1 (fr) | 2001-03-28 |
EP1087063B1 EP1087063B1 (fr) | 2009-06-17 |
Family
ID=28045902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00120588A Expired - Lifetime EP1087063B1 (fr) | 1999-09-23 | 2000-09-20 | Dispositif de forage et d'ancrage et procédé de mise en place de tirants d'ancrage |
Country Status (6)
Country | Link |
---|---|
US (1) | US6588986B1 (fr) |
EP (1) | EP1087063B1 (fr) |
AT (1) | ATE434088T1 (fr) |
DE (1) | DE60042385D1 (fr) |
DK (1) | DK1087063T3 (fr) |
ES (1) | ES2327311T3 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6588986B1 (en) * | 1999-09-23 | 2003-07-08 | Forasol International Sa | Device for drilling and anchoring and process for placing grout anchors |
US6672806B2 (en) | 2000-11-22 | 2004-01-06 | Forasol International Sa | Device for drilling and anchoring and process for placing grout anchors |
CN102051879A (zh) * | 2010-11-09 | 2011-05-11 | 中国水电顾问集团华东勘测设计研究院 | 土层锚杆施工工艺 |
CN104532836A (zh) * | 2014-12-24 | 2015-04-22 | 中科院广州化灌工程有限公司 | 一种成孔、安装、注浆三合一的锚索施工装置 |
CN105370305A (zh) * | 2015-11-11 | 2016-03-02 | 中国煤炭科工集团太原研究院有限公司 | 一种锚固剂药卷自动分装、喷射装置 |
CN114991141A (zh) * | 2022-06-30 | 2022-09-02 | 广东志创宏建筑工程有限公司 | 一种预应力锚索结构及预应力锚索施工方法 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT505959B1 (de) * | 2004-03-23 | 2011-06-15 | Alwag Tunnelausbau Gmbh | Verfahren und vorrichtung zum bohren insbesondere schlag- oder drehschlagbohren eines loches in boden- oder gesteinsmaterial und zum ausbilden einer verankerung |
US7584581B2 (en) * | 2005-02-25 | 2009-09-08 | Brian Iske | Device for post-installation in-situ barrier creation and method of use thereof |
US7565779B2 (en) | 2005-02-25 | 2009-07-28 | W. R. Grace & Co.-Conn. | Device for in-situ barrier |
NL1030624C2 (nl) * | 2005-12-08 | 2007-06-12 | Van Leeuwen Harmelen Bv Geb | Werkwijze voor het inbrengen van een trekanker in de grond. |
DE102007005540B4 (de) * | 2006-02-24 | 2015-04-23 | Friedr. Ischebeck Gmbh | Verfahren und Injektionsanker mit fixiertem Statikmischer |
US20090284712A1 (en) * | 2008-05-14 | 2009-11-19 | Brooks Phillip E | Eyeglass support device |
CZ303418B6 (cs) * | 2010-12-22 | 2012-09-05 | Vysoká škola bánská-Technická univerzita Ostrava | Flexibilní vícepramenný svorník se staticky nezávisle cinnými prameny |
DE102011078767A1 (de) * | 2011-07-07 | 2013-01-10 | Hilti Aktiengesellschaft | Litzenanker |
CA3062630A1 (fr) | 2017-05-10 | 2018-11-15 | Gcp Applied Technologies Inc. | Dispositif de barriere in-situ avec conduit d'injection interne |
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US3973409A (en) * | 1974-07-05 | 1976-08-10 | Kabushiki Kaisha Takechi Koumusho | Apparatus for establishing an anchor |
EP0413676A1 (fr) | 1989-08-14 | 1991-02-20 | Smet-Boring N.V. | Procédé de fixation d'ancrages |
EP0638689A1 (fr) * | 1993-08-09 | 1995-02-15 | Bouygues | Procédé pour faciliter l'extraction de l'armature d'un tirant précontraint et tirant correspondant |
EP0770734A1 (fr) | 1995-10-23 | 1997-05-02 | Vincenzo Sibilla | Procédé de mise en place de tirants d'ancrage |
WO1998058132A1 (fr) * | 1997-06-18 | 1998-12-23 | Techmo Entwicklungs- Und Vertriebs Gmbh | Procede et dispositif permettant de creuser des trous de forage |
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US3512366A (en) * | 1969-02-14 | 1970-05-19 | Lee A Turzillo | Method for forming cast-in-place reinforced concrete pile |
US3815368A (en) * | 1973-07-19 | 1974-06-11 | L Turzillo | Method for installing concrete anchor piles in situ |
US4036026A (en) * | 1974-07-05 | 1977-07-19 | Kabushiki Kaisha Takechi Koumusho | Method and apparatus for establishing an anchor |
US4253781A (en) * | 1979-03-08 | 1981-03-03 | Philipp Holzmann Aktiengesellschaft | Method and an apparatus for providing a grouted anchorage against hydrostatic pressure |
DE3108331C2 (de) * | 1981-03-05 | 1984-03-01 | Gkn Keller Gmbh, 6050 Offenbach | Verfahren und Vorrichtung zur Ausbildung eines Gesteinsfilters in einem der Grundwassergewinnung oder -absenkung dienenden Bohrbrunnen |
US4718791A (en) * | 1985-11-15 | 1988-01-12 | Schnabel Foundation Company | High capacity tieback installation method |
IL79202A0 (en) * | 1986-06-24 | 1986-09-30 | Lipsker Yitshaq | Structure and installation of ground anchor |
DE3926787C2 (de) * | 1989-08-11 | 1998-07-02 | Holzmann Philipp Ag | Verfahren und Vorrichtung zum Einbringen und Verankern eines Zugpfahls |
CA2088287C (fr) * | 1992-02-07 | 2003-05-20 | Masaru Tateyama | Pile de renfort et methode de construction |
ATE434088T1 (de) * | 1999-09-23 | 2009-07-15 | Forasol S A | Bohr- und ankervorrichtung und verfahren zum setzen von verpressankern |
-
2000
- 2000-09-20 AT AT00120588T patent/ATE434088T1/de active
- 2000-09-20 ES ES00120588T patent/ES2327311T3/es not_active Expired - Lifetime
- 2000-09-20 DK DK00120588T patent/DK1087063T3/da active
- 2000-09-20 EP EP00120588A patent/EP1087063B1/fr not_active Expired - Lifetime
- 2000-09-20 DE DE60042385T patent/DE60042385D1/de not_active Expired - Lifetime
- 2000-11-22 US US09/721,328 patent/US6588986B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US3973409A (en) * | 1974-07-05 | 1976-08-10 | Kabushiki Kaisha Takechi Koumusho | Apparatus for establishing an anchor |
EP0413676A1 (fr) | 1989-08-14 | 1991-02-20 | Smet-Boring N.V. | Procédé de fixation d'ancrages |
EP0638689A1 (fr) * | 1993-08-09 | 1995-02-15 | Bouygues | Procédé pour faciliter l'extraction de l'armature d'un tirant précontraint et tirant correspondant |
EP0770734A1 (fr) | 1995-10-23 | 1997-05-02 | Vincenzo Sibilla | Procédé de mise en place de tirants d'ancrage |
WO1998058132A1 (fr) * | 1997-06-18 | 1998-12-23 | Techmo Entwicklungs- Und Vertriebs Gmbh | Procede et dispositif permettant de creuser des trous de forage |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6588986B1 (en) * | 1999-09-23 | 2003-07-08 | Forasol International Sa | Device for drilling and anchoring and process for placing grout anchors |
US6672806B2 (en) | 2000-11-22 | 2004-01-06 | Forasol International Sa | Device for drilling and anchoring and process for placing grout anchors |
CN102051879A (zh) * | 2010-11-09 | 2011-05-11 | 中国水电顾问集团华东勘测设计研究院 | 土层锚杆施工工艺 |
CN104532836A (zh) * | 2014-12-24 | 2015-04-22 | 中科院广州化灌工程有限公司 | 一种成孔、安装、注浆三合一的锚索施工装置 |
CN105370305A (zh) * | 2015-11-11 | 2016-03-02 | 中国煤炭科工集团太原研究院有限公司 | 一种锚固剂药卷自动分装、喷射装置 |
CN114991141A (zh) * | 2022-06-30 | 2022-09-02 | 广东志创宏建筑工程有限公司 | 一种预应力锚索结构及预应力锚索施工方法 |
CN114991141B (zh) * | 2022-06-30 | 2024-04-09 | 广东志创宏建筑工程有限公司 | 一种预应力锚索结构及预应力锚索施工方法 |
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ES2327311T3 (es) | 2009-10-28 |
ATE434088T1 (de) | 2009-07-15 |
EP1087063B1 (fr) | 2009-06-17 |
US6588986B1 (en) | 2003-07-08 |
DK1087063T3 (da) | 2009-08-03 |
DE60042385D1 (de) | 2009-07-30 |
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