EP1885997A1 - Verfahren und vorrichtung zum bohren, insbesondere schla-goder drehschlagbohren, eines loches in boden-oder geseteinsmaterial - Google Patents
Verfahren und vorrichtung zum bohren, insbesondere schla-goder drehschlagbohren, eines loches in boden-oder geseteinsmaterialInfo
- Publication number
- EP1885997A1 EP1885997A1 EP06741015A EP06741015A EP1885997A1 EP 1885997 A1 EP1885997 A1 EP 1885997A1 EP 06741015 A EP06741015 A EP 06741015A EP 06741015 A EP06741015 A EP 06741015A EP 1885997 A1 EP1885997 A1 EP 1885997A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drilling
- drill string
- borehole
- drill
- drill bit
- 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 abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 title claims abstract description 18
- 239000011435 rock Substances 0.000 title claims abstract description 15
- 239000002689 soil Substances 0.000 title claims abstract description 12
- 238000009527 percussion Methods 0.000 title abstract description 8
- 238000003892 spreading Methods 0.000 claims abstract description 73
- 238000004873 anchoring Methods 0.000 claims abstract description 34
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 230000006735 deficit Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
-
- 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
- E21D21/008—Anchoring or tensioning means
-
- 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 present invention relates to a method for drilling, in particular percussion or rotary impact drilling, a hole in soil or rock material and fixing an anchor in the hole, wherein a borehole is formed by a drill bit mounted on a drill string.
- the invention further relates to a device for drilling, in particular percussion or rotary impact drilling, a hole in soil or rock material and for the production of an anchor, wherein a drill bit mounted on a drill string forms a borehole.
- the drill pipe can be formed on its outer circumference with additional ribs and grooves, so that in a whereabouts of the
- Drill pipe in the borehole and a subsequent backfilling a correspondingly good anchor effect can be achieved.
- To further improve the anchoring effect is For example, from AT-U 5644 known to bring the cladding tube by expanding its outer periphery in abutment against the inner wall of the borehole.
- a disadvantage of this known state of the art is the fact that in a first process step the borehole has to be produced, whereupon, after removal of the boring tool together with the boring rod, the anchoring device is introduced into the borehole, possibly having a large length, in a further method step, after which then, by removing the corresponding holding device, widening the outer diameter, an attachment to the borehole wall is achieved. It is immediately obvious that a correspondingly increased expenditure of time is required not only for the two separate working steps, but that, if appropriate, subsequent introduction of such an anchor device of great length is associated with difficulties.
- the present invention therefore aims to develop a method and an apparatus of the type mentioned in that with a simplified design and reduced time immediately after completion of a well an anchorage to the inner wall of the well can be achieved.
- the method according to the invention starting from a method of the type mentioned above essentially characterized in that after completion of the borehole a plurality of spaced apart from the drill bit, running counter to the drilling direction, in particular wedge-shaped expansion elements in the wall of the borehole formed by the drill bit. Due to the fact that after completion of the borehole an anchoring takes place directly over, in particular wedge-shaped spreading elements running opposite the direction of drilling, the additional working step of separate introduction of anchoring into the completed borehole after prior removal of the drill string and the boring tool can be dispensed with - The, so that can achieve a corresponding time savings.
- the method according to the invention can be used independently of the soil or rock material to be drilled, since anchoring is carried out immediately after the formation of the borehole in the borehole, so that even with loose rock, in which case at least one collapse occurs Removal of the drilling tool and would have to be feared before introducing an anchorage, no difficulty as in the case of subsequently produced anchorages.
- wedge-shaped spreading immediately occurs at least the tips of the spreading, which run counter to the drilling direction, so that a correspondingly good anchoring effect immediately after completion of the well can be achieved.
- the spreading elements are biased during the drilling operation in the direction of the drill string.
- the drill rod is acted upon or withdrawn counter to the drilling direction in the direction of the open end of the borehole.
- an anchor element is formed on the remaining drill hole in the wellbore and the drill bit. If special requirements are made of the anchoring, it is proposed according to a further preferred embodiment that after completion of the borehole and exit or anchoring of the spreading the drill string is divided in particular in the region of the spreading and removed from the well and by an anchor element, in particular a Strand anchor is replaced, which is connected to the remaining in the borehole portion of the drill string, in particular screwed, is.
- a device of the type mentioned above is substantially characterized in that in a subsequent to the drill bit a plurality of particular wedge-shaped, counter to the drilling direction oriented expansion elements is provided, which after completion of the drill bit formed by the drill bit Boreholes are ausbringbar in the wall of the borehole.
- Drill rod acted upon, in particular by at least one bracket are biased.
- a particular annular expander is mounted on the circumference of the drill string and in a rotational movement of the drill string in one to a rotary motion when performing the boring process opposite direction in the direction of the drill bit along the longitudinal direction of the drill string is slidable and cooperates with the wedge-shaped spreading elements, which pivotally connected to a particular with the drill string fixedly connected and arranged between the expansion element and the drill bit bearing element.
- the impact or rotary impact drilling is carried out by a movement of the drill bit of the drill string in a predetermined direction of rotation, wherein the direction of rotation of the drill string is reversed for spreading the spreading.
- at least one spring element be provided on the expansion element, which in a recess or during the drilling process Recess is receivable on the circumference of the expander element and, upon reversal of the direction of rotation, interacts with at least one profiling element on at least one expander element to prevent the expander element from rotating and to dislocate along the longitudinal direction by providing a threaded connection; as corresponds to a further preferred embodiment of the device according to the invention.
- At least one flushing channel extending in the longitudinal direction of the device be provided in the expansion element.
- the expandable expansion elements are arranged distributed substantially uniformly over the circumference of the drill string, as corresponds to a further preferred embodiment of the device according to the invention.
- uniformly high anchoring forces can be introduced over the circumference of the borehole and the drill pipe into the surrounding soil or rock material.
- a plurality of expandable expansion elements is provided at different distances from the drill bit on the circumference of the drill string, as a further preferred embodiment corresponds to the device according to the invention.
- expandable expansion elements can be over a greater length, in particular in the front region of the device according to the invention achieve a correspondingly secure anchoring when expanding the expandable expansion elements, so that even with possibly loose rock at least some of the spreading elements arranged at different distances from the drill bit, which are additionally distributed over the circumference of the device according to the invention, can ensure a secure and reliable anchoring.
- spreading elements arranged at different distances from the drill bit are arranged offset in the circumferential direction of the drill string.
- Sp Dretti cooperate with a common, along the drill string displaceably arranged expander.
- the drill string is divisible in particular in the region of the expansion elements in sections and an anchor element, in particular a screw head of a Litzenankers, with the Borehole remaining and connected to the drill bit portion of the drill string is connectable.
- an anchor element in particular a screw head of a Litzenankers
- the drill string is formed in a manner known per se in the interior with a flushing channel.
- a flushing channel can be used not only for introducing flushing fluid during the drilling process, but optionally also for introducing a hardening material, which is introduced in the region of the tip and / or the region of the expansion elements.
- FIG. 1 shows a partial section through a first embodiment of a device according to the invention for carrying out the method according to the invention
- FIG. 2 is a section similar to FIG. 1, with wedge-shaped spreading elements running counter to the drilling direction entering the borehole wall after completion of the boring;
- FIG. 3 shows a section along the line III-III through the region of the spreading elements and of the expansion element of the device according to the invention
- Fig. 4 in a similar to Fig. L representation of a section through a modified embodiment of an apparatus according to the invention for carrying out the method according to the invention, wherein along the longitudinal direction the device is provided with a plurality of spreading elements;
- FIG. 5 shows a partial section similar to FIG. 4, wherein at least one expansion element has emerged into the wall of the surrounding borehole;
- FIG. 6 shows, in a representation similar to FIG. 4, a section through a further modified embodiment of a device according to the invention for carrying out the method according to the invention, wherein the drill string is designed so as to be divided in the region of the spreading elements;
- Fig. 7 in a similar to Fig. 5 representation of a partial section of the embodiment of FIG. 6, wherein the remote from the drill bit of the drill string and removed by an anchor element, in particular a strand anchor after leakage of at least one expansion element in the wall of surrounding borehole is replaced.
- Fig. 8 in a similar to Fig. 5 representation of a partial section of the embodiment of FIG. 6, wherein the remote from the drill bit of the drill string and removed by an anchor element, in particular a strand anchor after leakage of at least one expansion element in the wall of surrounding borehole is replaced.
- Fig. 1 denotes a wall of a borehole, which is produced by a drill bit schematically indicated by 2, wherein the drill bit 2 is mounted on a drill pipe designated 3, wherein in a known manner by means not shown a punch - And torsional stress of the drill string 3 for producing the borehole 1 via provided outside of the borehole 1 drive means takes place.
- the drill pipe 3 is also provided with a drilling channel 4 indicated schematically for rinsing the drill bit 2 and optionally for discharging the degraded material during the drilling process.
- a fixed nut 5 is provided on the drill string 3, followed by a plurality of in an opposite direction of drilling. 6 extending widening direction, wedge-shaped spreading elements 7 are arranged distributed along the circumference of the drill pipe 3. The spreading elements 7 are acted upon during the drilling process shown in Fig. 1 by a bracket or clamping bracket 8 in a position in which the spreading elements 7 are within the defined by the drill bit 2, clear cross-section of the borehole 1, not to the drilling operation affect.
- the spreading elements 7 are pivoted into the position shown in FIG. 2, wherein the tips 15 of the expansion elements 7 each enter the surrounding borehole wall 1 and thus the Anchor anchors formed by the drill pipe 3 and the drill bit 2 safely anchored in the produced hole 1.
- a tensile stress on the drill string 3 against the arrows 6 and 14 is made so that the tips are
- FIGS. 1 and 2 For a proper removal of the degraded material or to achieve a corresponding flushing action, moreover, in FIGS. 1 and 2 at least one flushing channel
- a plurality of wedge-shaped spreading elements 7 are arranged along the circumference of the drill pipe 3, four segment-like, wedge-shaped spreading elements 7 being provided in the embodiment shown in FIGS. 1 to 3 for achieving a corresponding anchoring effect are.
- the spreading elements 7 are hiebei correspondingly mounted on the biasing bracket 8 or hinged to a likewise provided on the drill pipe 3 bearing element.
- the spreading elements 7 are arranged in their length, training, prestressing force and number corresponding to the circumference of the drill pipe 3.
- a securing pin 20 is provided behind the expansion element 10 in order to prevent it from becoming unsecured. to secure intentional movement or loss.
- the extent of the longitudinal displacement of the expansion element 10 during the application of the wedge-shaped spreading elements 7 can be seen hiebei from the apparent in Fig. 2 distance between the locking pin 20 and facing away from the drill bit 2 end of the expansion element 10.
- a drill bit 2 for producing the borehole 1 is in turn mounted on a drill string designated 3.
- the wedge-shaped spreading elements 7 are provided substantially adjacent to each other on the circumference of the drill pipe 3, is provided in this embodiment, that at a different distance from the drill bit 2, a plurality of 17 and 18 designated spreading elements is arranged ,
- drilling takes place, for example, by a movement of the drill pipe 3 in the counterclockwise direction, while completion of the borehole 1 by reversing the direction of rotation of the drill string 3, a deployment or extension of the expansion elements 17 and 18 again takes place in that by a corresponding engagement of a spring element 12 is a displacement or displacement of the in turn designated 10 expansion element in the direction of the drill bit 2, as indicated in Fig. 5, so that by corresponding ramp-like portions 19 of the expander 10 at different distances from the drill bit 2 arranged spreading 17 and 18 enter the borehole wall 1.
- the spreading elements 17 and 18 of the drill bit 2 can for a Be provided equalization of the anchoring effect beyond that the spreading elements 17 and 18 distributed and offset over the circumference of the drill pipe 3 are arranged, and this is in particular for spreading 17 and 18 of interest, which extends over a small portion or opening angle over the Extend the circumference of the drill string 3.
- a plurality of spreading elements 17 and 18 are arranged at different distances from the drill bit 2. Similar to the previous embodiment, drilling is again carried out by a movement of the drill string 3 in the counterclockwise direction, while after completion of the drill hole 1 by reversing the drilling direction of the drill pipe 3, a spreading or exit of the spreading elements 17 and 18 is again effected characterized in that by a corresponding engagement of the spring element 12, a displacement or displacement of the in turn designated 10 expansion element in the direction of the drill bit 2, as can be seen from Fig. 7. Similar to the embodiment according to FIGS. 4 and 5, a common expansion element 10 is used for the plurality of spreading elements 17 and 18 arranged in the longitudinal direction.
- the drill string 3 is subdivided into separable subregions 3 'and 3 ", wherein a connection 23 between the subregions 3' and 3" of the drill string can be achieved, for example, with a conical hexagonal guide , After completion of the bore and an escape of at least some spreading elements, as indicated in Fig.
- FIG Drill pipe 3 as described in connection with the preceding embodiment, introduce an example of the conditions of the surrounding soil or rock material anchoring element, for example in the form of the strand anchor 22, after removal of the portion 3 "of the drill string 3 and anchor securely , Such an approach can hiebei according to the choice of material of the introduced anchor 22 represent an alternative for other possible permanent anchor.
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)
- Earth Drilling (AREA)
- Piles And Underground Anchors (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Drilling And Boring (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06741015T PL1885997T3 (pl) | 2005-05-27 | 2006-05-26 | Sposób i urządzenie do wiercenia, w szczególności wiercenia udarowego lub wiercenia udarowo-obrotowego otworu w materiale gruntu lub w materiale skalnym |
AT06741015T ATE417186T1 (de) | 2005-05-27 | 2006-05-26 | Verfahren und vorrichtung zum bohren, insbesondere schlag- oder drehschlagbohren, eines loches in boden- oder gesteinsmaterial |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0091205A AT501979B1 (de) | 2005-05-27 | 2005-05-27 | Verfahren und vorrichtung zum bohren, insbesondere schlag- oder drehschlagbohren, eines loches in boden- oder gesteinsmaterial |
PCT/AT2006/000216 WO2006125242A1 (de) | 2005-05-27 | 2006-05-26 | Verfahren und vorrichtung zum bohren, insbesondere schla-goder drehschlagbohren, eines loches in boden-oder geseteinsmaterial |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1885997A1 true EP1885997A1 (de) | 2008-02-13 |
EP1885997B1 EP1885997B1 (de) | 2008-12-10 |
Family
ID=36781448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06741015A Active EP1885997B1 (de) | 2005-05-27 | 2006-05-26 | Verfahren und vorrichtung zum bohren, insbesondere schlag- oder drehschlagbohren, eines loches in boden- oder gesteinsmaterial |
Country Status (13)
Country | Link |
---|---|
US (1) | US20090133933A1 (de) |
EP (1) | EP1885997B1 (de) |
JP (1) | JP2008542579A (de) |
KR (1) | KR20080038276A (de) |
CN (1) | CN101184906A (de) |
AT (2) | AT501979B1 (de) |
AU (1) | AU2006251842A1 (de) |
CA (1) | CA2607920A1 (de) |
DE (1) | DE502006002337D1 (de) |
ES (1) | ES2316067T3 (de) |
PL (1) | PL1885997T3 (de) |
WO (1) | WO2006125242A1 (de) |
ZA (1) | ZA200709749B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2529109A (en) * | 2013-05-07 | 2016-02-10 | Technical Services Team Ltd | Self-boring shield anchor apparatus and method |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT10289U1 (de) | 2007-06-19 | 2008-12-15 | Alwag Tunnelausbau Gmbh | Verfahren und vorrichtung zum bohren eines loches in boden- oder gesteinsmaterial und ausbilden einer verankerung |
BR112013001565A2 (pt) * | 2010-07-19 | 2016-05-10 | Illinois Tool Works | dispositivo de ancoragem |
US20120155966A1 (en) * | 2010-12-21 | 2012-06-21 | Hamilton Sundstrand Corporation | Gas and liquid recovery from regolith |
AT13292U1 (de) * | 2012-07-06 | 2013-10-15 | Dywidag Systems Int Gmbh | Verfahren und Vorrichtung zum Ausbilden von Bohrlöchern und Festlegen einer Verankerung in dem Bohrloch |
SE539285C2 (sv) * | 2013-02-07 | 2017-06-20 | Rock Solutions North AB | Bergbult |
DE202013006920U1 (de) | 2013-08-01 | 2014-11-03 | C. & E. Fein Gmbh | Werkzeugeinrichtung |
CN105421867A (zh) * | 2015-12-14 | 2016-03-23 | 江苏建筑职业技术学院 | 活套地锚装置及安装方法 |
DE102017108664B4 (de) * | 2017-04-24 | 2022-11-10 | Bochumer Eisenhütte GmbH & Co. KG | Spreizhülsenanker mit verlorener Bohrkrone |
AT519878B1 (de) * | 2017-07-06 | 2018-11-15 | Ulrich Schluesselbauer | Vorrichtung zum Befestigen eines Steigbügels in einer Betonwand |
CN107401388B (zh) * | 2017-08-31 | 2023-08-29 | 中交二航局第四工程有限公司 | 一种钻机卡钻处理装置和方法 |
EP3530878B1 (de) * | 2018-02-22 | 2023-06-07 | Sandvik Mining and Construction Oy | Aufpralldämpfer für gebirgsanker |
CN109441366B (zh) * | 2018-12-27 | 2023-09-26 | 河南理工大学 | 一种可双向旋转的锚索成套钻具 |
USD953833S1 (en) | 2019-08-22 | 2022-06-07 | Milwaukee Electric Tool Corporation | Oscillating multi tool anchor |
CN111648806B (zh) * | 2020-07-09 | 2021-05-14 | 中国科学院地质与地球物理研究所 | 一种伞状结构吸能锚杆装置 |
CN113954670B (zh) * | 2021-11-18 | 2023-04-14 | 西藏世峰高科能源技术有限公司 | 一种双枪充电桩 |
KR102658939B1 (ko) * | 2023-06-30 | 2024-04-19 | 삼성물산 주식회사 | 벽체 홀딩 장치 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4310266A (en) * | 1980-03-10 | 1982-01-12 | Ingersoll-Rand Company | Friction rock stabilizer and method of inserting same in an earth structure bore |
US4490074A (en) * | 1982-01-12 | 1984-12-25 | Ingersoll-Rand Company | Friction rock stabilizer and sheathing means, in combination, and method of securing a friction rock stabilizer in an earth bore |
US4592178A (en) * | 1985-04-09 | 1986-06-03 | Lu Hsi H | Ground anchor |
US4697394A (en) * | 1986-08-04 | 1987-10-06 | Lu Hsi H | Ground anchor with recoverable steel rods |
US4789284A (en) * | 1987-11-05 | 1988-12-06 | White Scott A | Self-cutting expansion anchor |
EP0694113A4 (de) * | 1993-04-16 | 1999-04-28 | Cutincoal Pty Ltd | Integrierte vorrichtung zum bohren ung greifverankern |
DE10119562A1 (de) * | 2001-04-21 | 2002-10-24 | Hilti Ag | Schlagbohrwerkzeug für Gestein |
AT5644U1 (de) * | 2001-04-26 | 2002-09-25 | Techmo Entw & Vertriebs Gmbh | Verfahren und vorrichtung zum bohren eines loches und zum festlegen einer verankerung in einem bohrloch |
SE526970C2 (sv) * | 2003-11-13 | 2005-11-29 | Atlas Copco Rock Drills Ab | Självborrande bergbult |
US6986623B2 (en) * | 2003-12-08 | 2006-01-17 | Robertson Jr Roy Lee | Method and apparatus for anchoring a mine roof bolt |
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 |
-
2005
- 2005-05-27 AT AT0091205A patent/AT501979B1/de not_active IP Right Cessation
-
2006
- 2006-05-26 AU AU2006251842A patent/AU2006251842A1/en not_active Abandoned
- 2006-05-26 PL PL06741015T patent/PL1885997T3/pl unknown
- 2006-05-26 EP EP06741015A patent/EP1885997B1/de active Active
- 2006-05-26 DE DE502006002337T patent/DE502006002337D1/de not_active Expired - Fee Related
- 2006-05-26 AT AT06741015T patent/ATE417186T1/de active
- 2006-05-26 ES ES06741015T patent/ES2316067T3/es active Active
- 2006-05-26 WO PCT/AT2006/000216 patent/WO2006125242A1/de active Application Filing
- 2006-05-26 US US11/921,075 patent/US20090133933A1/en not_active Abandoned
- 2006-05-26 CA CA002607920A patent/CA2607920A1/en not_active Abandoned
- 2006-05-26 JP JP2008512647A patent/JP2008542579A/ja not_active Withdrawn
- 2006-05-26 CN CNA2006800184850A patent/CN101184906A/zh active Pending
- 2006-05-26 KR KR1020077029482A patent/KR20080038276A/ko not_active Application Discontinuation
-
2007
- 2007-11-13 ZA ZA200709749A patent/ZA200709749B/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2006125242A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2529109A (en) * | 2013-05-07 | 2016-02-10 | Technical Services Team Ltd | Self-boring shield anchor apparatus and method |
GB2529109B (en) * | 2013-05-07 | 2017-05-10 | Technical Services Team Ltd | Self-boring shield anchor apparatus and method |
Also Published As
Publication number | Publication date |
---|---|
AT501979A1 (de) | 2006-12-15 |
CA2607920A1 (en) | 2006-11-30 |
EP1885997B1 (de) | 2008-12-10 |
JP2008542579A (ja) | 2008-11-27 |
US20090133933A1 (en) | 2009-05-28 |
ATE417186T1 (de) | 2008-12-15 |
AT501979B1 (de) | 2009-05-15 |
AU2006251842A1 (en) | 2006-11-30 |
CN101184906A (zh) | 2008-05-21 |
PL1885997T3 (pl) | 2009-05-29 |
KR20080038276A (ko) | 2008-05-06 |
ES2316067T3 (es) | 2009-04-01 |
WO2006125242A1 (de) | 2006-11-30 |
ZA200709749B (en) | 2008-11-26 |
DE502006002337D1 (de) | 2009-01-22 |
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