BE441565A - - Google Patents
Info
- Publication number
- BE441565A BE441565A BE441565DA BE441565A BE 441565 A BE441565 A BE 441565A BE 441565D A BE441565D A BE 441565DA BE 441565 A BE441565 A BE 441565A
- Authority
- BE
- Belgium
- Prior art keywords
- column
- prop
- filling
- box
- mine
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims 1
- 239000004576 sand Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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)
- Tents Or Canopies (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE441565A true BE441565A (de) |
Family
ID=99025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441565D BE441565A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE441565A (de) |
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 BE441565D patent/BE441565A/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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