AU474950B2 - Roof support witha shield for longwall workings in mines - Google Patents
Roof support witha shield for longwall workings in minesInfo
- Publication number
- AU474950B2 AU474950B2 AU55764/73A AU5576473A AU474950B2 AU 474950 B2 AU474950 B2 AU 474950B2 AU 55764/73 A AU55764/73 A AU 55764/73A AU 5576473 A AU5576473 A AU 5576473A AU 474950 B2 AU474950 B2 AU 474950B2
- Authority
- AU
- Australia
- Prior art keywords
- witha
- mines
- shield
- roof support
- longwall workings
- 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
- 230000003245 working effect Effects 0.000 title 1
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
- E21D23/04—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
- E21D23/0427—Shield operating devices; Hinges therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/02—Provisional protective covers for working space for use in longwall working
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)
- Lining And Supports For Tunnels (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722224207 DE2224207C2 (en) | 1972-05-18 | Extension element for the shield extension of struts in underground mining operations | |
DEDE822242 | 1972-05-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU5576473A AU5576473A (en) | 1974-11-21 |
AU474950B2 true AU474950B2 (en) | 1976-08-05 |
Family
ID=5845198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU55764/73A Expired AU474950B2 (en) | 1972-05-18 | 1973-05-16 | Roof support witha shield for longwall workings in mines |
Country Status (5)
Country | Link |
---|---|
US (1) | US3854293A (en) |
AU (1) | AU474950B2 (en) |
BE (1) | BE799668A (en) |
FR (1) | FR2184733B3 (en) |
GB (1) | GB1428256A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2253143B1 (en) * | 1973-11-30 | 1978-11-03 | Alsace Mines Potasse | |
DE2413538C2 (en) * | 1974-03-21 | 1978-05-24 | Bochumer Eisenhuette Heintzmann & Co, 4630 Bochum | Shield support frame |
DE2843857C2 (en) * | 1978-10-07 | 1986-06-19 | Bochumer Eisenhütte Heintzmann GmbH & Co, 4630 Bochum | Shield support frame |
GB2150192B (en) * | 1983-11-16 | 1987-04-15 | Dobson Park Ind | Mineroof support |
CN114607432A (en) * | 2022-03-28 | 2022-06-10 | 中国矿业大学(北京) | Support area adjustable support device for rib forming treatment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2781888A (en) * | 1947-07-02 | 1957-02-19 | Gewerk Eisenhuette Westfalia | Flexible conveyor having successively shiftable sections for long face mining |
US2566003A (en) * | 1947-07-07 | 1951-08-28 | Mavor & Coulson Ltd | Anchoring device for coal and other mines |
FR1503990A (en) * | 1966-10-11 | 1967-12-01 | Bennes Marrel | Improvements to support piles, especially for mines or underground work sites |
FR1600845A (en) * | 1968-07-08 | 1970-08-03 |
-
1973
- 1973-05-10 GB GB2245673A patent/GB1428256A/en not_active Expired
- 1973-05-11 FR FR7317136A patent/FR2184733B3/fr not_active Expired
- 1973-05-16 AU AU55764/73A patent/AU474950B2/en not_active Expired
- 1973-05-17 BE BE131220A patent/BE799668A/en unknown
- 1973-05-18 US US00361643A patent/US3854293A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2224207B1 (en) | 1973-01-04 |
BE799668A (en) | 1973-11-19 |
US3854293A (en) | 1974-12-17 |
FR2184733B3 (en) | 1976-04-23 |
FR2184733A1 (en) | 1973-12-28 |
DE2224207A1 (en) | 1973-01-04 |
GB1428256A (en) | 1976-03-17 |
AU5576473A (en) | 1974-11-21 |
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