BE487202A - - Google Patents
Info
- Publication number
- BE487202A BE487202A BE487202DA BE487202A BE 487202 A BE487202 A BE 487202A BE 487202D A BE487202D A BE 487202DA BE 487202 A BE487202 A BE 487202A
- Authority
- BE
- Belgium
- Prior art keywords
- head
- coupling
- coupling rod
- wedge
- rod
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims description 50
- 238000010168 coupling process Methods 0.000 claims description 50
- 238000005859 coupling reaction Methods 0.000 claims description 50
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 230000001133 acceleration Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 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
- E21D15/60—Devices for withdrawing props or chocks
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)
- Emergency Lowering Means (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE487202A true BE487202A (de) |
Family
ID=132695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE487202D BE487202A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE487202A (de) |
-
0
- BE BE487202D patent/BE487202A/fr unknown
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