FR70172E - Improvements to machines for dismantling arched support frames for mine galleries - Google Patents
Improvements to machines for dismantling arched support frames for mine galleriesInfo
- Publication number
- FR70172E FR70172E FR70172DA FR70172E FR 70172 E FR70172 E FR 70172E FR 70172D A FR70172D A FR 70172DA FR 70172 E FR70172 E FR 70172E
- Authority
- FR
- France
- Prior art keywords
- dismantling
- machines
- support frames
- arched support
- mine galleries
- 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
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (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 |
---|---|---|---|
FR70172T | 1956-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR70172E true FR70172E (en) | 1959-02-19 |
Family
ID=8701905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR70172D Expired FR70172E (en) | 1956-04-27 | 1956-04-27 | Improvements to machines for dismantling arched support frames for mine galleries |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR70172E (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200003057A1 (en) * | 2016-12-20 | 2020-01-02 | Crrc Construction Engrg. Co., Ltd. | Positioner and positioning method for reinforcing steel bars of tunnel side wall |
-
1956
- 1956-04-27 FR FR70172D patent/FR70172E/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200003057A1 (en) * | 2016-12-20 | 2020-01-02 | Crrc Construction Engrg. Co., Ltd. | Positioner and positioning method for reinforcing steel bars of tunnel side wall |
US10662772B2 (en) * | 2016-12-20 | 2020-05-26 | Crrc Construction Engrg. Co., Ltd. | Positioner and positioning method for reinforcing steel bars of tunnel side wall |
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