JPH0428074B2 - - Google Patents
Info
- Publication number
- JPH0428074B2 JPH0428074B2 JP9643988A JP9643988A JPH0428074B2 JP H0428074 B2 JPH0428074 B2 JP H0428074B2 JP 9643988 A JP9643988 A JP 9643988A JP 9643988 A JP9643988 A JP 9643988A JP H0428074 B2 JPH0428074 B2 JP H0428074B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- weight
- compressed air
- rotary joint
- partition wall
- 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
- 239000000428 dust Substances 0.000 claims description 22
- 239000011435 rock Substances 0.000 claims description 18
- 238000009412 basement excavation Methods 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 12
- 238000009792 diffusion process Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000005553 drilling Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9643988A JPH01268982A (ja) | 1988-04-19 | 1988-04-19 | 岩盤掘削機 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9643988A JPH01268982A (ja) | 1988-04-19 | 1988-04-19 | 岩盤掘削機 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01268982A JPH01268982A (ja) | 1989-10-26 |
| JPH0428074B2 true JPH0428074B2 (cs) | 1992-05-13 |
Family
ID=14165049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9643988A Granted JPH01268982A (ja) | 1988-04-19 | 1988-04-19 | 岩盤掘削機 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01268982A (cs) |
-
1988
- 1988-04-19 JP JP9643988A patent/JPH01268982A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01268982A (ja) | 1989-10-26 |
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