BE573039A - - Google Patents
Info
- Publication number
- BE573039A BE573039A BE573039DA BE573039A BE 573039 A BE573039 A BE 573039A BE 573039D A BE573039D A BE 573039DA BE 573039 A BE573039 A BE 573039A
- Authority
- BE
- Belgium
- Prior art keywords
- crown
- size
- cylindrical body
- rotation
- small
- Prior art date
Links
- 238000005553 drilling Methods 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 20
- 230000000284 resting effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000013138 pruning Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002250 progressing effect Effects 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims 4
- 210000000056 organ Anatomy 0.000 claims 2
- 239000011435 rock Substances 0.000 claims 1
- 210000003462 vein Anatomy 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 7
- 239000003245 coal Substances 0.000 description 7
- 230000002441 reversible effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 244000145845 chattering Species 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
- E21D9/112—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads
- E21D9/113—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads having a central part for making a pilot tunnel and a follow-up part for enlarging the pilot tunnel
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE573039A true BE573039A (enrdf_load_stackoverflow) |
Family
ID=190620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE573039D BE573039A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE573039A (enrdf_load_stackoverflow) |
-
0
- BE BE573039D patent/BE573039A/fr unknown
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