SE512834C2 - Tubular mounting bolt - Google Patents
Tubular mounting boltInfo
- Publication number
- SE512834C2 SE512834C2 SE9902065A SE9902065A SE512834C2 SE 512834 C2 SE512834 C2 SE 512834C2 SE 9902065 A SE9902065 A SE 9902065A SE 9902065 A SE9902065 A SE 9902065A SE 512834 C2 SE512834 C2 SE 512834C2
- Authority
- SE
- Sweden
- Prior art keywords
- pipe
- tube
- bolt
- rock bolt
- hole
- Prior art date
Links
- 239000011435 rock Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- 238000001125 extrusion Methods 0.000 claims abstract 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 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
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means
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)
- Dowels (AREA)
- Forging (AREA)
- Extrusion Of Metal (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
512 834 z ändförslutningama 2,3. Detta rum kan trycksättas via en passage 4 vid ändförslutningen 2. Ändförslutningama kan även åstadkommas på annat sätt. Det väsentliga är att rörets 1 ändar tätas så att man medelst trycksättníng av rummet 5 kan expandera röret 1 till anliggning mot borrhålet 11. Röret 1 framställs exempelvis medelst strängpressning av ett aluminiumbaserat material, tex EN-AW 6082-T4. Därvid kan röret 1 med fördel ges en tvärsnittsforrn som den som visas i frg 2. Genom att profilen görs symmetrisk relativt de längsgående snitten 6,7 erhålles en relativt jämn fördelning av anliggningskraften mellan röret 1 och borrhålet 11 efter expansion av bulten. Detta medför att bulten kan belastas hårdare utan att glida i borrhålet. Den visade bulten innefattar fyra i huvudsak triangelfonnade partier 8 som har stor tvärsnittsarea och därmed stor styvhet och dragstyrka. Dessa partier är förbundna medelst mellanliggande U-formade deforrnationspartier 9. För att ytterligare öka flexibiliteten har rörprofilen försetts med ett antal cirkelforrnade partier 12 vid deformationspartierna 9. 512 834 z end closures 2,3. This space can be pressurized via a passage 4 at the end closure 2. The end closures can also be provided in another way. The essential thing is that the ends of the pipe 1 are sealed so that by pressurizing the space 5 the pipe 1 can be expanded to abut against the borehole 11. The pipe 1 is manufactured, for example, by extruding an aluminum-based material, eg EN-AW 6082-T4. In this case, the pipe 1 can advantageously be given a cross-sectional shape such as that shown in color 2. By making the profile symmetrical relative to the longitudinal sections 6,7, a relatively even distribution of the abutment force between the pipe 1 and the borehole 11 is obtained after expansion of the bolt. This means that the bolt can be loaded harder without slipping in the borehole. The bolt shown comprises four substantially triangular portions 8 which have a large cross-sectional area and thus great rigidity and tensile strength. These portions are connected by means of intermediate U-shaped deformation portions 9. In order to further increase the flexibility, the pipe profile has been provided with a number of circular-shaped portions 12 at the deformation portions 9.
Då en bergbult skall förankras i ett borrhål sticks bulten in i borrhålet med ändförslutningen 3 längst in i borrhålet. Därefter tillförs tryclcfluidum via passagen 4 till det av röret 1 omslutna rummet 5. Härvid expanderas röret 1 så att det anligger hårt mot borrhålsväggen 11. Därefter avlastas rummet 5 varvid röret 1 förblir fast förankrat då den föregående expansionen deforrnerat röret 1 plastiskt.When a rock bolt is to be anchored in a borehole, the bolt is inserted into the borehole with the end closure 3 at the far end of the borehole. Thereafter, pressure fluid is supplied via the passage 4 to the space 5 enclosed by the pipe 1. In this case the pipe 1 is expanded so that it abuts the borehole wall 11.
Uppfrnningen kan givetvis varieras inom ramen för patentkravet 1. Profilen kan exempelvis ha fler eller färre än fyra styva partier.The invention can of course be varied within the scope of claim 1. The profile can, for example, have more or less than four rigid portions.
Claims (5)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9902065A SE512834C2 (en) | 1999-06-04 | 1999-06-04 | Tubular mounting bolt |
AU28400/00A AU770287B2 (en) | 1999-06-04 | 2000-02-07 | Tube-formed rock bolt |
PCT/SE2000/000229 WO2000075489A1 (en) | 1999-06-04 | 2000-02-07 | Tube-formed rock bolt |
EP00906844A EP1183441A1 (en) | 1999-06-04 | 2000-02-07 | Tube-formed rock bolt |
JP2001501743A JP2003501573A (en) | 1999-06-04 | 2000-02-07 | Tubular lock bolt |
CA002371136A CA2371136A1 (en) | 1999-06-04 | 2000-02-07 | Tube-formed rock bolt |
ZA200109337A ZA200109337B (en) | 1999-06-04 | 2001-11-13 | Tube-formed rock bolt. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9902065A SE512834C2 (en) | 1999-06-04 | 1999-06-04 | Tubular mounting bolt |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9902065D0 SE9902065D0 (en) | 1999-06-04 |
SE9902065L SE9902065L (en) | 2000-05-22 |
SE512834C2 true SE512834C2 (en) | 2000-05-22 |
Family
ID=20415894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9902065A SE512834C2 (en) | 1999-06-04 | 1999-06-04 | Tubular mounting bolt |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1183441A1 (en) |
JP (1) | JP2003501573A (en) |
AU (1) | AU770287B2 (en) |
CA (1) | CA2371136A1 (en) |
SE (1) | SE512834C2 (en) |
WO (1) | WO2000075489A1 (en) |
ZA (1) | ZA200109337B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT412739B (en) * | 2002-01-22 | 2005-06-27 | Techmo Entw & Vertriebs Gmbh | METHOD AND DEVICE FOR DRILLING A HOLE IN GROUND OR ROCK MATERIAL AND FOR FORMING AN ANCHORAGE |
AT412361B (en) * | 2002-09-03 | 2005-01-25 | Hammer Rene | METHOD AND DEVICE FOR SAVING THE MOUNTAIN AND REMOVING STOOLS, TUNNELS & DIG. |
JP2005200893A (en) | 2004-01-14 | 2005-07-28 | Nisshin Steel Co Ltd | Steel pipe expansion type rock bolt with high bearing capacity and its manufacturing method |
WO2007023363A1 (en) * | 2005-08-23 | 2007-03-01 | Pieter Schalk Mulder | An expansible rock bolt |
AU2011349044B2 (en) * | 2010-12-22 | 2015-02-05 | Garock Pty Ltd | Rock bolt |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1410258A (en) * | 1919-03-29 | 1922-03-21 | Edward Ogden J | Expansion shield |
US4284379A (en) * | 1979-07-25 | 1981-08-18 | Ingersoll-Rand Company | Earth structure stabilizer |
ZA811894B (en) * | 1980-03-28 | 1982-04-28 | R Thom | An anchor bolt |
DE3120809A1 (en) * | 1981-05-25 | 1982-12-16 | Hilti AG, 9494 Schaan | ANCHOR BOLT WITH CYLINDRICAL BOLT BODY |
ZA906021B (en) * | 1989-08-02 | 1991-05-29 | Ingersoll Rand Co | A dynamic earth anchor,and a sleeve therefor |
-
1999
- 1999-06-04 SE SE9902065A patent/SE512834C2/en unknown
-
2000
- 2000-02-07 AU AU28400/00A patent/AU770287B2/en not_active Ceased
- 2000-02-07 EP EP00906844A patent/EP1183441A1/en not_active Withdrawn
- 2000-02-07 WO PCT/SE2000/000229 patent/WO2000075489A1/en not_active Application Discontinuation
- 2000-02-07 CA CA002371136A patent/CA2371136A1/en not_active Abandoned
- 2000-02-07 JP JP2001501743A patent/JP2003501573A/en active Pending
-
2001
- 2001-11-13 ZA ZA200109337A patent/ZA200109337B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP1183441A1 (en) | 2002-03-06 |
SE9902065L (en) | 2000-05-22 |
JP2003501573A (en) | 2003-01-14 |
SE9902065D0 (en) | 1999-06-04 |
AU2840000A (en) | 2000-12-28 |
CA2371136A1 (en) | 2000-12-14 |
AU770287B2 (en) | 2004-02-19 |
ZA200109337B (en) | 2003-02-26 |
WO2000075489A1 (en) | 2000-12-14 |
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