FR1267523A - Roof supports for underground mines - Google Patents
Roof supports for underground minesInfo
- Publication number
- FR1267523A FR1267523A FR838595A FR838595A FR1267523A FR 1267523 A FR1267523 A FR 1267523A FR 838595 A FR838595 A FR 838595A FR 838595 A FR838595 A FR 838595A FR 1267523 A FR1267523 A FR 1267523A
- Authority
- FR
- France
- Prior art keywords
- roof supports
- underground mines
- mines
- underground
- roof
- 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
- 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
- E21D23/0418—Positioning devices and stabilizing means for the props
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR838595A FR1267523A (en) | 1960-09-14 | 1960-09-14 | Roof supports for underground mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR838595A FR1267523A (en) | 1960-09-14 | 1960-09-14 | Roof supports for underground mines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1267523A true FR1267523A (en) | 1961-07-21 |
Family
ID=8739030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR838595A Expired FR1267523A (en) | 1960-09-14 | 1960-09-14 | Roof supports for underground mines |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1267523A (en) |
-
1960
- 1960-09-14 FR FR838595A patent/FR1267523A/en not_active Expired
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