BE525750A - - Google Patents
Info
- Publication number
- BE525750A BE525750A BE525750DA BE525750A BE 525750 A BE525750 A BE 525750A BE 525750D A BE525750D A BE 525750DA BE 525750 A BE525750 A BE 525750A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- jaws
- mine
- region
- shiftable
- Prior art date
Links
- 230000035515 penetration Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000004323 axial length Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000012546 transfer Methods 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
- E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
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)
- Mutual Connection Of Rods And Tubes (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
BE525750A true BE525750A (enrdf_load_stackoverflow) |
Family
ID=159940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE525750D BE525750A (enrdf_load_stackoverflow) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE525750A (enrdf_load_stackoverflow) |
-
0
- BE BE525750D patent/BE525750A/fr unknown
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