FR2261408A1 - Roof supports for dome shaped mine gallery - telescopic trough shaped members matching roof have brackets for angled anchor bolts - Google Patents
Roof supports for dome shaped mine gallery - telescopic trough shaped members matching roof have brackets for angled anchor boltsInfo
- Publication number
- FR2261408A1 FR2261408A1 FR7405625A FR7405625A FR2261408A1 FR 2261408 A1 FR2261408 A1 FR 2261408A1 FR 7405625 A FR7405625 A FR 7405625A FR 7405625 A FR7405625 A FR 7405625A FR 2261408 A1 FR2261408 A1 FR 2261408A1
- Authority
- FR
- France
- Prior art keywords
- roof
- trough
- anchor bolts
- brackets
- angled
- 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.)
- Granted
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
- E21D11/006—Lining anchored in the rock
-
- 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
- E21D11/14—Lining predominantly with metal
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)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7405625A FR2261408A1 (en) | 1974-02-19 | 1974-02-19 | Roof supports for dome shaped mine gallery - telescopic trough shaped members matching roof have brackets for angled anchor bolts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7405625A FR2261408A1 (en) | 1974-02-19 | 1974-02-19 | Roof supports for dome shaped mine gallery - telescopic trough shaped members matching roof have brackets for angled anchor bolts |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2261408A1 true FR2261408A1 (en) | 1975-09-12 |
FR2261408B3 FR2261408B3 (fr) | 1976-11-26 |
Family
ID=9135120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7405625A Granted FR2261408A1 (en) | 1974-02-19 | 1974-02-19 | Roof supports for dome shaped mine gallery - telescopic trough shaped members matching roof have brackets for angled anchor bolts |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2261408A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0181734A1 (fr) * | 1984-11-02 | 1986-05-21 | British Steel plc | Assemblages à crampons |
US20180291736A1 (en) * | 2016-07-08 | 2018-10-11 | Shandong University | High-strength confined concrete support system for underground tunnel |
-
1974
- 1974-02-19 FR FR7405625A patent/FR2261408A1/fr active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0181734A1 (fr) * | 1984-11-02 | 1986-05-21 | British Steel plc | Assemblages à crampons |
US20180291736A1 (en) * | 2016-07-08 | 2018-10-11 | Shandong University | High-strength confined concrete support system for underground tunnel |
US10415387B2 (en) * | 2016-07-08 | 2019-09-17 | Shandong University | High-strength confined concrete support system for underground tunnel |
Also Published As
Publication number | Publication date |
---|---|
FR2261408B3 (fr) | 1976-11-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |