JPS6438688A - Embedded pipeline - Google Patents

Embedded pipeline

Info

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
Application number
JP62193298A
Other languages
Japanese (ja)
Other versions
JP2511059B2 (en
Inventor
Jinichiro Nakamura
Yonekazu Yamada
Satoshi Mitsuishi
Atsutoshi Miyazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meisei Electric Co Ltd
Sekisui Chemical Co Ltd
Original Assignee
Meisei Electric Co Ltd
Sekisui Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Meisei Electric Co Ltd, Sekisui Chemical Co Ltd filed Critical Meisei Electric Co Ltd
Priority to JP62193298A priority Critical patent/JP2511059B2/en
Publication of JPS6438688A publication Critical patent/JPS6438688A/en
Application granted granted Critical
Publication of JP2511059B2 publication Critical patent/JP2511059B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62193298A 1987-07-31 1987-07-31 Buried pipeline Expired - Lifetime JP2511059B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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