FR1112062A - Installation for progressive support for the advancement of underground or similar works - Google Patents
Installation for progressive support for the advancement of underground or similar worksInfo
- Publication number
- FR1112062A FR1112062A FR1112062DA FR1112062A FR 1112062 A FR1112062 A FR 1112062A FR 1112062D A FR1112062D A FR 1112062DA FR 1112062 A FR1112062 A FR 1112062A
- Authority
- FR
- France
- Prior art keywords
- advancement
- underground
- installation
- similar works
- progressive support
- 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
- 238000009434 installation Methods 0.000 title 1
- 230000000750 progressive 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
-
- 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1112062X | 1954-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1112062A true FR1112062A (en) | 1956-03-08 |
Family
ID=7723753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1112062D Expired FR1112062A (en) | 1954-04-12 | 1954-08-04 | Installation for progressive support for the advancement of underground or similar works |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1112062A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2322319A1 (en) * | 1975-08-23 | 1977-03-25 | Saarbergwerke Ag | RELIEF VALVE CONNECTING THE TWO CYLINDERS OF A TWO-STAGE TELESCOPIC HYDRAULIC SEAL |
-
1954
- 1954-08-04 FR FR1112062D patent/FR1112062A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2322319A1 (en) * | 1975-08-23 | 1977-03-25 | Saarbergwerke Ag | RELIEF VALVE CONNECTING THE TWO CYLINDERS OF A TWO-STAGE TELESCOPIC HYDRAULIC SEAL |
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