BE491569A - - Google Patents
Info
- Publication number
- BE491569A BE491569A BE491569DA BE491569A BE 491569 A BE491569 A BE 491569A BE 491569D A BE491569D A BE 491569DA BE 491569 A BE491569 A BE 491569A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- prop according
- lock
- mining
- friction
- Prior art date
Links
- 238000005065 mining Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000006378 damage Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000010008 shearing Methods 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
- E21D15/14—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)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE491569A true BE491569A (de) |
Family
ID=136005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE491569D BE491569A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE491569A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974349C (de) * | 1951-10-19 | 1960-12-01 | Wilhelm Reppel | Mehrteiliger Grubenstempel |
-
0
- BE BE491569D patent/BE491569A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974349C (de) * | 1951-10-19 | 1960-12-01 | Wilhelm Reppel | Mehrteiliger Grubenstempel |
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