PL91072B1 - - Google Patents
Download PDFInfo
- Publication number
- PL91072B1 PL91072B1 PL16590473A PL16590473A PL91072B1 PL 91072 B1 PL91072 B1 PL 91072B1 PL 16590473 A PL16590473 A PL 16590473A PL 16590473 A PL16590473 A PL 16590473A PL 91072 B1 PL91072 B1 PL 91072B1
- Authority
- PL
- Poland
- Prior art keywords
- plate
- unit according
- disc
- wall casing
- wall
- Prior art date
Links
- 238000009412 basement excavation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 210000001562 sternum Anatomy 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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 (1)
| Publication Number | Publication Date |
|---|---|
| PL91072B1 true PL91072B1 (enrdf_load_stackoverflow) | 1977-02-28 |
Family
ID=5859138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL16590473A PL91072B1 (enrdf_load_stackoverflow) | 1972-10-16 | 1973-10-16 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE805700A (enrdf_load_stackoverflow) |
| DE (1) | DE2250599B1 (enrdf_load_stackoverflow) |
| FR (1) | FR2203020B3 (enrdf_load_stackoverflow) |
| GB (1) | GB1451373A (enrdf_load_stackoverflow) |
| PL (1) | PL91072B1 (enrdf_load_stackoverflow) |
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 PL PL16590473A patent/PL91072B1/pl unknown
- 1973-10-16 FR FR7336862A patent/FR2203020B3/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2203020A1 (enrdf_load_stackoverflow) | 1974-05-10 |
| DE2250599A1 (enrdf_load_stackoverflow) | 1974-04-11 |
| FR2203020B3 (enrdf_load_stackoverflow) | 1976-09-03 |
| DE2250599B1 (de) | 1974-04-11 |
| GB1451373A (en) | 1976-09-29 |
| BE805700A (fr) | 1974-04-05 |
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