BE561842A - - Google Patents
Info
- Publication number
- BE561842A BE561842A BE561842DA BE561842A BE 561842 A BE561842 A BE 561842A BE 561842D A BE561842D A BE 561842DA BE 561842 A BE561842 A BE 561842A
- Authority
- BE
- Belgium
- Prior art keywords
- wedge
- segments
- flanges
- corner
- faces
- Prior art date
Links
- 238000009434 installation Methods 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 2
- 238000005065 mining Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel 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
- E21D15/50—Component parts or details of props
- E21D15/52—Extensible units located above or below standard props
- E21D15/526—Extensible units located above or below standard props for step-by-step extension of the prop
-
- 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
- E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Braking Arrangements (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE561842A true BE561842A (cs) |
Family
ID=183656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE561842D BE561842A (cs) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE561842A (cs) |
-
0
- BE BE561842D patent/BE561842A/fr unknown
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