JPH0220303Y2 - - Google Patents
Info
- Publication number
- JPH0220303Y2 JPH0220303Y2 JP4448584U JP4448584U JPH0220303Y2 JP H0220303 Y2 JPH0220303 Y2 JP H0220303Y2 JP 4448584 U JP4448584 U JP 4448584U JP 4448584 U JP4448584 U JP 4448584U JP H0220303 Y2 JPH0220303 Y2 JP H0220303Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- pipe
- wedge
- propulsion
- wellhead
- 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
- 230000002265 prevention Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009933 burial Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4448584U JPS60159098U (ja) | 1984-03-27 | 1984-03-27 | 推進管体の後退防止装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4448584U JPS60159098U (ja) | 1984-03-27 | 1984-03-27 | 推進管体の後退防止装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60159098U JPS60159098U (ja) | 1985-10-23 |
| JPH0220303Y2 true JPH0220303Y2 (en]) | 1990-06-04 |
Family
ID=30557103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4448584U Granted JPS60159098U (ja) | 1984-03-27 | 1984-03-27 | 推進管体の後退防止装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60159098U (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0762433B2 (ja) * | 1989-06-16 | 1995-07-05 | 機動建設工業株式会社 | 管渠後退防止装置 |
-
1984
- 1984-03-27 JP JP4448584U patent/JPS60159098U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60159098U (ja) | 1985-10-23 |
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