PL82288B2 - - Google Patents
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- Publication number
- PL82288B2 PL82288B2 PL15372772A PL15372772A PL82288B2 PL 82288 B2 PL82288 B2 PL 82288B2 PL 15372772 A PL15372772 A PL 15372772A PL 15372772 A PL15372772 A PL 15372772A PL 82288 B2 PL82288 B2 PL 82288B2
- Authority
- PL
- Poland
- Prior art keywords
- casing
- cushion
- excavation
- corridor
- zone
- Prior art date
Links
- 238000009412 basement excavation Methods 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 238000005336 cracking Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000003245 working effect Effects 0.000 claims description 4
- 230000006378 damage Effects 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15372772A PL82288B2 (cs) | 1972-02-26 | 1972-02-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15372772A PL82288B2 (cs) | 1972-02-26 | 1972-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL82288B2 true PL82288B2 (cs) | 1975-10-31 |
Family
ID=19957585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL15372772A PL82288B2 (cs) | 1972-02-26 | 1972-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL82288B2 (cs) |
-
1972
- 1972-02-26 PL PL15372772A patent/PL82288B2/pl unknown
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