CA1218534A - Collapsible elongate mine support - Google Patents
Collapsible elongate mine supportInfo
- Publication number
- CA1218534A CA1218534A CA000457371A CA457371A CA1218534A CA 1218534 A CA1218534 A CA 1218534A CA 000457371 A CA000457371 A CA 000457371A CA 457371 A CA457371 A CA 457371A CA 1218534 A CA1218534 A CA 1218534A
- Authority
- CA
- Canada
- Prior art keywords
- mine support
- sleeve
- planar surfaces
- timber
- metal
- 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.)
- Expired
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 24
- 238000007373 indentation Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000452 restraining effect Effects 0.000 claims description 2
- 239000002023 wood Substances 0.000 abstract description 6
- 229920002522 Wood fibre Polymers 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 210000000051 wattle Anatomy 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Rod-Shaped Construction Members (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Applications Claiming Priority (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA834618 | 1983-06-24 | ||
| ZA83/4618 | 1983-06-24 | ||
| ZA834619 | 1983-06-24 | ||
| ZA83/4619 | 1983-06-24 | ||
| ZA83/7625 | 1983-10-13 | ||
| ZA837625 | 1983-10-13 | ||
| ZA83/7657 | 1983-10-14 | ||
| ZA837657 | 1983-10-14 | ||
| ZA838465 | 1983-11-14 | ||
| ZA83/8465 | 1983-11-14 | ||
| ZA84/0824 | 1984-02-03 | ||
| ZA84824 | 1984-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1218534A true CA1218534A (en) | 1987-03-03 |
Family
ID=27560364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000457371A Expired CA1218534A (en) | 1983-06-24 | 1984-06-25 | Collapsible elongate mine support |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0130770A3 (xx) |
| CA (1) | CA1218534A (xx) |
| ZW (1) | ZW9984A1 (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8801338B2 (en) * | 2011-11-28 | 2014-08-12 | Micon | Nested mine roof supports |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1642603A (en) * | 1926-06-03 | 1927-09-13 | Martin J Conway | Reenforced mine prop |
| DE1088905B (de) * | 1958-12-02 | 1960-09-15 | Rheinstahl Gmbh Wanheim | Verfahren zur Herstellung konischer zylindrischer Innenstempel |
| DE3066863D1 (en) * | 1979-11-02 | 1984-04-12 | Mine Support Syst Pty Ltd | Timber prop |
| GB2077808A (en) * | 1980-05-09 | 1981-12-23 | Longwall Mining Equipment Prop | Improvements in props |
| GB2081340B (en) * | 1980-07-22 | 1984-07-25 | Brown Allan Henry George | Deformable mine prop |
| GB2080364A (en) * | 1980-07-22 | 1982-02-03 | Hunt Leuchars & Hepburn Ltd | Mine support prop |
| GB2096203A (en) * | 1981-04-08 | 1982-10-13 | Longwall Mining Equipment Prop | Mine support |
-
1984
- 1984-06-22 ZW ZW99/84A patent/ZW9984A1/xx unknown
- 1984-06-25 CA CA000457371A patent/CA1218534A/en not_active Expired
- 1984-06-25 EP EP84304291A patent/EP0130770A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0130770A3 (en) | 1986-05-14 |
| EP0130770A2 (en) | 1985-01-09 |
| ZW9984A1 (en) | 1984-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1109005A (en) | Channel base well screen | |
| DE69724901T2 (de) | Reifen mit verbesserter Leistung, Verfahren zur Herstellung und Form | |
| DE2744739A1 (de) | Rohrkupplung und verfahren zu deren herstellung | |
| WO1997047230A3 (en) | Two-staged venous cannula with expandable reinforcing member | |
| US4712947A (en) | Mine support prop | |
| DE2322357A1 (de) | Spike-bolzen | |
| US5050365A (en) | Concrete form snap tie | |
| CA1218534A (en) | Collapsible elongate mine support | |
| US4534531A (en) | Elongated prop for supporting a load | |
| US6910834B2 (en) | Mine prop | |
| DE2515254C3 (de) | Rollbalg | |
| CA1170066A (en) | Prop | |
| EP0128964A1 (en) | Mine props | |
| US5113626A (en) | Earth anchor apparatus having improved load bearing element | |
| GB2125465A (en) | Mine prop | |
| EP0160133A1 (en) | Elongate mine prop | |
| US5085544A (en) | Expanding plug and a method to manufacture same | |
| EP0809758B1 (en) | Masonry anchor | |
| DE1659020A1 (de) | Rostschutz- und Abstandsvorrichtung fuer Betonarmierungen | |
| CA1231843A (en) | Elongate mine support | |
| AU2840000A (en) | Tube-formed rock bolt | |
| JPS5732831A (en) | Method for manufacturing bent pipe joint continuously formed relatively long straight pipe part in one body at both ends | |
| JPH0138204Y2 (xx) | ||
| Dhanens et al. | Stresses in and buckling of unstiffened cylinders subjected to local axial loads | |
| JPH0428997Y2 (xx) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |