FR2203020B3 - - Google Patents
Info
- Publication number
- FR2203020B3 FR2203020B3 FR7336862A FR7336862A FR2203020B3 FR 2203020 B3 FR2203020 B3 FR 2203020B3 FR 7336862 A FR7336862 A FR 7336862A FR 7336862 A FR7336862 A FR 7336862A FR 2203020 B3 FR2203020 B3 FR 2203020B3
- 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
- E21D23/03—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
-
- 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
- E21D23/0039—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 and supported by a strut or by a row of struts parallel to the working face
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)
- Excavating Of Shafts Or Tunnels (AREA)
- Building Environments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722250599 DE2250599B1 (de) | 1972-10-16 | 1972-10-16 | Schildartige strebausbaueinheit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2203020A1 FR2203020A1 (US06229276-20010508-P00081.png) | 1974-05-10 |
| FR2203020B3 true FR2203020B3 (US06229276-20010508-P00081.png) | 1976-09-03 |
Family
ID=5859138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7336862A Expired FR2203020B3 (US06229276-20010508-P00081.png) | 1972-10-16 | 1973-10-16 |
Country Status (5)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756853B (zh) * | 2021-07-31 | 2024-05-10 | 山东省煤田地质规划勘察研究院 | 一种深井软岩层冲击地压防护装置 |
| CN117090615B (zh) * | 2023-10-16 | 2023-12-29 | 中核二十五建设有限公司 | 一种矿山施工用的支撑设备 |
-
1972
- 1972-10-16 DE DE19722250599 patent/DE2250599B1/de not_active Withdrawn
-
1973
- 1973-10-03 GB GB4627773A patent/GB1451373A/en not_active Expired
- 1973-10-05 BE BE136368A patent/BE805700A/xx not_active IP Right Cessation
- 1973-10-16 FR FR7336862A patent/FR2203020B3/fr not_active Expired
- 1973-10-16 PL PL16590473A patent/PL91072B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1451373A (en) | 1976-09-29 |
| PL91072B1 (US06229276-20010508-P00081.png) | 1977-02-28 |
| BE805700A (fr) | 1974-04-05 |
| FR2203020A1 (US06229276-20010508-P00081.png) | 1974-05-10 |
| DE2250599A1 (US06229276-20010508-P00081.png) | 1974-04-11 |
| DE2250599B1 (de) | 1974-04-11 |
