IN152972B - - Google Patents
Info
- Publication number
- IN152972B IN152972B IN271/CAL/80A IN271CA1980A IN152972B IN 152972 B IN152972 B IN 152972B IN 271CA1980 A IN271CA1980 A IN 271CA1980A IN 152972 B IN152972 B IN 152972B
- Authority
- IN
- India
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0017—Pile type supports
- E21D23/0021—Pile type supports comprising two walking elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7908418A GB2044331B (en) | 1979-03-09 | 1979-03-09 | Mine-roof supports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN152972B true IN152972B (en) | 1984-05-12 |
Family
ID=10503765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN271/CAL/80A IN152972B (en) | 1979-03-09 | 1980-03-07 |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU5622180A (en) |
| GB (1) | GB2044331B (en) |
| IN (1) | IN152972B (en) |
| MX (1) | MX150136A (en) |
| ZA (1) | ZA801330B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233359B (en) * | 2022-01-24 | 2024-03-01 | 中煤能源研究院有限责任公司 | Roof-caving type gangue filling hydraulic support and filling method |
-
1979
- 1979-03-09 GB GB7908418A patent/GB2044331B/en not_active Expired
-
1980
- 1980-03-06 MX MX181453A patent/MX150136A/en unknown
- 1980-03-06 ZA ZA00801330A patent/ZA801330B/en unknown
- 1980-03-06 AU AU56221/80A patent/AU5622180A/en not_active Abandoned
- 1980-03-07 IN IN271/CAL/80A patent/IN152972B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA801330B (en) | 1981-03-25 |
| AU5622180A (en) | 1980-09-11 |
| GB2044331A (en) | 1980-10-15 |
| GB2044331B (en) | 1984-05-31 |
| MX150136A (en) | 1984-03-19 |