JPH0386191U - - Google Patents
Info
- Publication number
- JPH0386191U JPH0386191U JP14764989U JP14764989U JPH0386191U JP H0386191 U JPH0386191 U JP H0386191U JP 14764989 U JP14764989 U JP 14764989U JP 14764989 U JP14764989 U JP 14764989U JP H0386191 U JPH0386191 U JP H0386191U
- Authority
- JP
- Japan
- Prior art keywords
- detection means
- rotation speed
- excavation depth
- wire
- detecting
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 10
- 238000009412 basement excavation Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14764989U JPH0386191U (fr) | 1989-12-25 | 1989-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14764989U JPH0386191U (fr) | 1989-12-25 | 1989-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0386191U true JPH0386191U (fr) | 1991-08-30 |
Family
ID=31694154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14764989U Pending JPH0386191U (fr) | 1989-12-25 | 1989-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0386191U (fr) |
-
1989
- 1989-12-25 JP JP14764989U patent/JPH0386191U/ja active Pending
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