BE558918A - - Google Patents
Info
- Publication number
- BE558918A BE558918A BE558918DA BE558918A BE 558918 A BE558918 A BE 558918A BE 558918D A BE558918D A BE 558918DA BE 558918 A BE558918 A BE 558918A
- Authority
- BE
- Belgium
- Prior art keywords
- props
- elements
- cap
- prop
- shoe
- Prior art date
Links
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Presses And Accessory Devices Thereof (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE558918A true BE558918A (enrdf_load_stackoverflow) |
Family
ID=181810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE558918D BE558918A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE558918A (enrdf_load_stackoverflow) |
-
0
- BE BE558918D patent/BE558918A/fr unknown
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