BE411133A - - Google Patents
Info
- Publication number
- BE411133A BE411133A BE411133DA BE411133A BE 411133 A BE411133 A BE 411133A BE 411133D A BE411133D A BE 411133DA BE 411133 A BE411133 A BE 411133A
- Authority
- BE
- Belgium
- Prior art keywords
- angle
- angles
- metal
- braking
- metal support
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 230000000750 progressive effect Effects 0.000 description 4
- 235000000396 iron Nutrition 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000463 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
- 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
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
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)
- Clamps And Clips (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE411133A true BE411133A (instruction) |
Family
ID=75177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE411133D BE411133A (instruction) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE411133A (instruction) |
-
0
- BE BE411133D patent/BE411133A/fr unknown
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