JPH055993B2 - - Google Patents
Info
- Publication number
- JPH055993B2 JPH055993B2 JP30624388A JP30624388A JPH055993B2 JP H055993 B2 JPH055993 B2 JP H055993B2 JP 30624388 A JP30624388 A JP 30624388A JP 30624388 A JP30624388 A JP 30624388A JP H055993 B2 JPH055993 B2 JP H055993B2
- Authority
- JP
- Japan
- Prior art keywords
- excavation
- pipe
- bit
- excavation pipe
- bit device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009412 basement excavation Methods 0.000 claims description 78
- 238000005553 drilling Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30624388A JPH02153189A (ja) | 1988-12-02 | 1988-12-02 | 掘削装置と掘削方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30624388A JPH02153189A (ja) | 1988-12-02 | 1988-12-02 | 掘削装置と掘削方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02153189A JPH02153189A (ja) | 1990-06-12 |
| JPH055993B2 true JPH055993B2 (enrdf_load_stackoverflow) | 1993-01-25 |
Family
ID=17954726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30624388A Granted JPH02153189A (ja) | 1988-12-02 | 1988-12-02 | 掘削装置と掘削方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02153189A (enrdf_load_stackoverflow) |
-
1988
- 1988-12-02 JP JP30624388A patent/JPH02153189A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02153189A (ja) | 1990-06-12 |
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