GB2045312B - Yieldable mine roof supports - Google Patents
Yieldable mine roof supportsInfo
- Publication number
- GB2045312B GB2045312B GB8006273A GB8006273A GB2045312B GB 2045312 B GB2045312 B GB 2045312B GB 8006273 A GB8006273 A GB 8006273A GB 8006273 A GB8006273 A GB 8006273A GB 2045312 B GB2045312 B GB 2045312B
- Authority
- GB
- United Kingdom
- Prior art keywords
- mine roof
- roof supports
- yieldable mine
- yieldable
- supports
- 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
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
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/22—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with member, pin, cross- piece, or the like, ruptured, sheared through, or permanently deformed upon excessive pressure
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)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8006273A GB2045312B (en) | 1979-03-09 | 1980-02-25 | Yieldable mine roof supports |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7908488 | 1979-03-09 | ||
GB8006273A GB2045312B (en) | 1979-03-09 | 1980-02-25 | Yieldable mine roof supports |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2045312A GB2045312A (en) | 1980-10-29 |
GB2045312B true GB2045312B (en) | 1983-05-11 |
Family
ID=26270864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8006273A Expired GB2045312B (en) | 1979-03-09 | 1980-02-25 | Yieldable mine roof supports |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2045312B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2211870B (en) * | 1987-11-04 | 1992-01-15 | Ward Engineering Limited | Stilt |
US5015125A (en) * | 1990-04-05 | 1991-05-14 | Seegmiller Ben L | Yieldable mine post |
US5400994A (en) * | 1991-01-22 | 1995-03-28 | Dyckerhoff & Widmann Ag Of Munich | Yieldable roof support system |
US5228810A (en) * | 1991-03-22 | 1993-07-20 | Seegmiller Ben L | Mine support post |
-
1980
- 1980-02-25 GB GB8006273A patent/GB2045312B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2045312A (en) | 1980-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |