JPS6245389B2 - - Google Patents
Info
- Publication number
- JPS6245389B2 JPS6245389B2 JP19140082A JP19140082A JPS6245389B2 JP S6245389 B2 JPS6245389 B2 JP S6245389B2 JP 19140082 A JP19140082 A JP 19140082A JP 19140082 A JP19140082 A JP 19140082A JP S6245389 B2 JPS6245389 B2 JP S6245389B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- passage
- pressure chamber
- casing
- pressure
- 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
Links
- 238000005553 drilling Methods 0.000 claims description 8
- 238000009527 percussion Methods 0.000 claims description 5
- 238000009412 basement excavation Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19140082A JPS5980886A (ja) | 1982-10-30 | 1982-10-30 | 空圧打撃式掘削装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19140082A JPS5980886A (ja) | 1982-10-30 | 1982-10-30 | 空圧打撃式掘削装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5980886A JPS5980886A (ja) | 1984-05-10 |
JPS6245389B2 true JPS6245389B2 (fr) | 1987-09-26 |
Family
ID=16273968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19140082A Granted JPS5980886A (ja) | 1982-10-30 | 1982-10-30 | 空圧打撃式掘削装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5980886A (fr) |
-
1982
- 1982-10-30 JP JP19140082A patent/JPS5980886A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5980886A (ja) | 1984-05-10 |
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