JPS6438688A - Embedded pipeline - Google Patents
Embedded pipelineInfo
- Publication number
- JPS6438688A JPS6438688A JP62193298A JP19329887A JPS6438688A JP S6438688 A JPS6438688 A JP S6438688A JP 62193298 A JP62193298 A JP 62193298A JP 19329887 A JP19329887 A JP 19329887A JP S6438688 A JPS6438688 A JP S6438688A
- Authority
- JP
- Japan
- Prior art keywords
- marker
- externally fitted
- soil
- earth
- filling
- 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.)
- Granted
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To search the embedded place of a pipeline with high accuracy by preventing the movement of a marker (marking body) due to the charge of earth and soil at the time of back-filling, by constructing an embedding pipeline of a tubular body having the marker formed into a ring shape externally fitted thereto. CONSTITUTION:A marker 1 is constituted by hermetically sealing a searching signal responding means 2 in a case 101 formed into a ring shape and the inner diameter of the through-hole 102 thereof is set to a size almost equal to or slightly larger than the outer diameter of a tubular body 3 to which the marker 1 is externally fitted. The searching signal responding means is constituted, for example, of a quartz resonance circuit wherein a coil, a capacitor and a quartz vibrator are connected in parallel. Then, the tubular bodies 3 having a required number of the markers 1... externally fitted thereto are successively laid in the ditch formed in the ground (road) to be mutually connected by joints 4 and covered with earth and sand to construct an embedded pipeline. By this method, since the ring-shaped marker is externally fitted to the tubular body, the marker is not moved by the charging of earth and soil at the time of back- filling or the variation of soil after the back-filling.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62193298A JP2511059B2 (en) | 1987-07-31 | 1987-07-31 | Buried pipeline |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62193298A JP2511059B2 (en) | 1987-07-31 | 1987-07-31 | Buried pipeline |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6438688A true JPS6438688A (en) | 1989-02-08 |
JP2511059B2 JP2511059B2 (en) | 1996-06-26 |
Family
ID=16305588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62193298A Expired - Lifetime JP2511059B2 (en) | 1987-07-31 | 1987-07-31 | Buried pipeline |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2511059B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02259485A (en) * | 1989-03-31 | 1990-10-22 | Osaka Gas Co Ltd | Searching apparatus of buried object |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5668178U (en) * | 1979-10-31 | 1981-06-06 | ||
JPS5822150U (en) * | 1981-08-04 | 1983-02-10 | 日産自動車株式会社 | Vehicle seat belt winding stop device |
JPS60230076A (en) * | 1984-04-27 | 1985-11-15 | Tokyo Gas Co Ltd | Method for probing and identifying buried body by using underground probe radar and marker body used for method |
-
1987
- 1987-07-31 JP JP62193298A patent/JP2511059B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5668178U (en) * | 1979-10-31 | 1981-06-06 | ||
JPS5822150U (en) * | 1981-08-04 | 1983-02-10 | 日産自動車株式会社 | Vehicle seat belt winding stop device |
JPS60230076A (en) * | 1984-04-27 | 1985-11-15 | Tokyo Gas Co Ltd | Method for probing and identifying buried body by using underground probe radar and marker body used for method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02259485A (en) * | 1989-03-31 | 1990-10-22 | Osaka Gas Co Ltd | Searching apparatus of buried object |
Also Published As
Publication number | Publication date |
---|---|
JP2511059B2 (en) | 1996-06-26 |
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