BE518295A - - Google Patents
Info
- Publication number
- BE518295A BE518295A BE518295DA BE518295A BE 518295 A BE518295 A BE 518295A BE 518295D A BE518295D A BE 518295DA BE 518295 A BE518295 A BE 518295A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- friction
- keyed
- limits
- values
- Prior art date
Links
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000005065 mining Methods 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000005470 impregnation Methods 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 210000003462 vein Anatomy 0.000 description 8
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011435 rock 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
- E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction
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)
- Lubricants (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE518295A true BE518295A (sr) |
Family
ID=154909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE518295D BE518295A (sr) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE518295A (sr) |
-
0
- BE BE518295D patent/BE518295A/fr unknown
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