BE459213A - - Google Patents
Info
- Publication number
- BE459213A BE459213A BE459213DA BE459213A BE 459213 A BE459213 A BE 459213A BE 459213D A BE459213D A BE 459213DA BE 459213 A BE459213 A BE 459213A
- Authority
- BE
- Belgium
- Prior art keywords
- circles
- wood
- buffer according
- log
- buffer
- Prior art date
Links
- 239000000872 buffer Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 239000002023 wood Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 239000004567 concrete Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229920002522 Wood fibre Polymers 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000002025 wood fiber Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000000979 retarding effect Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 241000252067 Megalops atlanticus Species 0.000 description 1
- 239000002969 artificial stone Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 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
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure
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)
- Absorbent Articles And Supports Therefor (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE459213A true BE459213A (pt) |
Family
ID=112341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE459213D BE459213A (pt) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE459213A (pt) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2284024A1 (fr) * | 1974-09-05 | 1976-04-02 | Mine Support Syst Pty Ltd | Etai compressible pour mine |
-
0
- BE BE459213D patent/BE459213A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2284024A1 (fr) * | 1974-09-05 | 1976-04-02 | Mine Support Syst Pty Ltd | Etai compressible pour mine |
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