BE447408A - - Google Patents
Info
- Publication number
- BE447408A BE447408A BE447408DA BE447408A BE 447408 A BE447408 A BE 447408A BE 447408D A BE447408D A BE 447408DA BE 447408 A BE447408 A BE 447408A
- Authority
- BE
- Belgium
- Prior art keywords
- column
- mines
- column according
- layers
- desc
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/02—Non-telescopic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Rod-Shaped Construction Members (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE447408A true BE447408A (enrdf_load_html_response) |
Family
ID=103255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE447408D BE447408A (enrdf_load_html_response) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE447408A (enrdf_load_html_response) |
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0
- BE BE447408D patent/BE447408A/fr unknown