FR1255168A - Improvements in hydraulic support elements for mine clearance corridors - Google Patents
Improvements in hydraulic support elements for mine clearance corridorsInfo
- Publication number
- FR1255168A FR1255168A FR822663A FR822663A FR1255168A FR 1255168 A FR1255168 A FR 1255168A FR 822663 A FR822663 A FR 822663A FR 822663 A FR822663 A FR 822663A FR 1255168 A FR1255168 A FR 1255168A
- Authority
- FR
- France
- Prior art keywords
- corridors
- support elements
- hydraulic support
- mine clearance
- mine
- 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
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
- E21F13/086—Armoured conveyors shifting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/06—Endless track vehicles with tracks without ground wheels
- B62D55/065—Multi-track vehicles, i.e. more than two tracks
-
- 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
- E21D23/08—Advancing mechanisms
- E21D23/081—Advancing mechanisms forming parts of the roof supports
- E21D23/087—Advancing mechanisms forming parts of the roof supports acting directly on the walls of the seam
- E21D23/088—Advancing mechanisms forming parts of the roof supports acting directly on the walls of the seam by means of wheels, rollers, caterpillars, belts or worm screws
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)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR822663A FR1255168A (en) | 1960-03-28 | 1960-03-28 | Improvements in hydraulic support elements for mine clearance corridors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR822663A FR1255168A (en) | 1960-03-28 | 1960-03-28 | Improvements in hydraulic support elements for mine clearance corridors |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1255168A true FR1255168A (en) | 1961-03-03 |
Family
ID=8728069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR822663A Expired FR1255168A (en) | 1960-03-28 | 1960-03-28 | Improvements in hydraulic support elements for mine clearance corridors |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1255168A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2359963A1 (en) * | 1976-07-28 | 1978-02-24 | Halbach & Braun | WALKING SHORING FORMWORK |
FR2432967A1 (en) * | 1978-08-11 | 1980-03-07 | Charbonnages De France | ARTICULATED TRACK CHASSIS |
-
1960
- 1960-03-28 FR FR822663A patent/FR1255168A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2359963A1 (en) * | 1976-07-28 | 1978-02-24 | Halbach & Braun | WALKING SHORING FORMWORK |
FR2432967A1 (en) * | 1978-08-11 | 1980-03-07 | Charbonnages De France | ARTICULATED TRACK CHASSIS |
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