FR2288852B3 - - Google Patents
Info
- Publication number
- FR2288852B3 FR2288852B3 FR7440598A FR7440598A FR2288852B3 FR 2288852 B3 FR2288852 B3 FR 2288852B3 FR 7440598 A FR7440598 A FR 7440598A FR 7440598 A FR7440598 A FR 7440598A FR 2288852 B3 FR2288852 B3 FR 2288852B3
- Authority
- FR
- France
- 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
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
-
- 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
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
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)
- Bridges Or Land Bridges (AREA)
- Tents Or Canopies (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7440598A FR2288852A1 (fr) | 1974-10-24 | 1974-10-24 | Bouclier de protection pour une pile de soutenement equipee de fleches avec prolonges telescopiques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7440598A FR2288852A1 (fr) | 1974-10-24 | 1974-10-24 | Bouclier de protection pour une pile de soutenement equipee de fleches avec prolonges telescopiques |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2288852A1 FR2288852A1 (fr) | 1976-05-21 |
| FR2288852B3 true FR2288852B3 (https=) | 1976-12-10 |
Family
ID=9145901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7440598A Granted FR2288852A1 (fr) | 1974-10-24 | 1974-10-24 | Bouclier de protection pour une pile de soutenement equipee de fleches avec prolonges telescopiques |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2288852A1 (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115992727B (zh) * | 2023-02-28 | 2023-11-03 | 四川川煤石洞沟煤业有限责任公司 | 一种可调缓冲式急倾斜综采护巷支架 |
-
1974
- 1974-10-24 FR FR7440598A patent/FR2288852A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2288852A1 (fr) | 1976-05-21 |