CA2107826A1 - Mine Roof Bolt - Google Patents
Mine Roof BoltInfo
- Publication number
- CA2107826A1 CA2107826A1 CA 2107826 CA2107826A CA2107826A1 CA 2107826 A1 CA2107826 A1 CA 2107826A1 CA 2107826 CA2107826 CA 2107826 CA 2107826 A CA2107826 A CA 2107826A CA 2107826 A1 CA2107826 A1 CA 2107826A1
- Authority
- CA
- Canada
- Prior art keywords
- steel cable
- tapered plug
- bolt
- tapered
- hexagonal
- 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
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
A passive-type mine roof bolt is constructed of multi-strand steel cable. The bolt head is constructed of a hexagonal- or other drive-headed collar having an internally tapered funnel-shaped bore therethrough, and a tapered plug having a frusto-conical outer surface that engages the funnel-shaped inner surface of the drive collar. The tapered plug has an internal bore essentially concentric with the outer frusto-conical surface, and is adapted to fit over the steel cable, the hexagonal head drive collar fitting over the tapered plug such that pressing the tapered plug and steel cable into the inner funnel-shaped bore of the hexagonal-head drive collar causes serrations on the internal bore of the tapered plug to be urged down against, and bite into, the steel cable, resulting in a rigid hexagonal head for the cable bolt. The tapered plug is in actuality, a pair of essentially identical diametrically opposed semi-frusto-conical tapered sections that more easily compress together to bite into the multi-strand steel cable. A number of alternative embodiments enhance the bolt's retention strength in the bore hole to aid in stabilizing the rock formation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/010,357 US5259703A (en) | 1992-03-23 | 1993-01-28 | Mine roof bolt |
US08/010,357 | 1993-01-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2107826A1 true CA2107826A1 (en) | 1994-07-29 |
CA2107826C CA2107826C (en) | 1999-04-27 |
Family
ID=21745373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2107826 Expired - Lifetime CA2107826C (en) | 1993-01-28 | 1993-10-06 | Mine roof bolt |
Country Status (2)
Country | Link |
---|---|
AU (2) | AU669745B2 (en) |
CA (1) | CA2107826C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8602690B2 (en) | 2008-12-23 | 2013-12-10 | Hani Sabri Mitri | Sleeved cable bolt |
EP3121369A1 (en) * | 2015-07-23 | 2017-01-25 | NV Bekaert SA | Cable bolts |
CN116988825A (en) * | 2023-09-25 | 2023-11-03 | 中国矿业大学(北京) | Resistance-increasing large-deformation grouting anchor rod and application method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140428A (en) * | 1978-03-06 | 1979-02-20 | Shakespeare Company | Tie rod support for mine |
CH671057A5 (en) * | 1986-04-28 | 1989-07-31 | Vsl Int Ag | |
FR2604744B1 (en) * | 1986-10-02 | 1991-04-19 | Francois Entreprises Cfe Sa Ci | CONSTRAINED ANCHORING METHOD AND DEVICE |
-
1993
- 1993-10-06 CA CA 2107826 patent/CA2107826C/en not_active Expired - Lifetime
- 1993-11-08 AU AU50541/93A patent/AU669745B2/en not_active Expired
-
1996
- 1996-04-16 AU AU50708/96A patent/AU678935B2/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8602690B2 (en) | 2008-12-23 | 2013-12-10 | Hani Sabri Mitri | Sleeved cable bolt |
AU2009329796B2 (en) * | 2008-12-23 | 2014-02-06 | Hani Sabri Mitri | Sleeved cable bolt |
EP3121369A1 (en) * | 2015-07-23 | 2017-01-25 | NV Bekaert SA | Cable bolts |
WO2017012994A1 (en) * | 2015-07-23 | 2017-01-26 | Nv Bekaert Sa | Cable bolts |
CN116988825A (en) * | 2023-09-25 | 2023-11-03 | 中国矿业大学(北京) | Resistance-increasing large-deformation grouting anchor rod and application method |
CN116988825B (en) * | 2023-09-25 | 2023-12-05 | 中国矿业大学(北京) | Resistance-increasing large-deformation grouting anchor rod and application method |
Also Published As
Publication number | Publication date |
---|---|
AU678935B2 (en) | 1997-06-12 |
CA2107826C (en) | 1999-04-27 |
AU669745B2 (en) | 1996-06-20 |
AU5054193A (en) | 1994-08-04 |
AU5070896A (en) | 1996-06-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20131007 |