BE491087A - - Google Patents
Info
- Publication number
- BE491087A BE491087A BE491087DA BE491087A BE 491087 A BE491087 A BE 491087A BE 491087D A BE491087D A BE 491087DA BE 491087 A BE491087 A BE 491087A
- Authority
- BE
- Belgium
- Prior art keywords
- support
- ribs
- mine support
- flanges
- mine
- Prior art date
Links
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 229910000639 Spring steel Inorganic materials 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 210000003323 beak Anatomy 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 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
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
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)
- Clamps And Clips (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE491087A true BE491087A (de) |
Family
ID=135636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE491087D BE491087A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE491087A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975699C (de) * | 1950-03-16 | 1962-05-30 | Niederlaendischer Staat | Nachgiebiger metallener Grubenstempel |
-
0
- BE BE491087D patent/BE491087A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975699C (de) * | 1950-03-16 | 1962-05-30 | Niederlaendischer Staat | Nachgiebiger metallener Grubenstempel |
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