JPS57200802A - Method for detecting buried position of underground buried conductor - Google Patents

Method for detecting buried position of underground buried conductor

Info

Publication number
JPS57200802A
JPS57200802A JP56086491A JP8649181A JPS57200802A JP S57200802 A JPS57200802 A JP S57200802A JP 56086491 A JP56086491 A JP 56086491A JP 8649181 A JP8649181 A JP 8649181A JP S57200802 A JPS57200802 A JP S57200802A
Authority
JP
Japan
Prior art keywords
conductor
wire
buried
depth
magnetic field
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
JP56086491A
Other languages
Japanese (ja)
Other versions
JPS642227B2 (en
Inventor
Yasuo Koyanagi
Takeo Yamada
Hiroyuki Hojo
Akio Nagamune
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP56086491A priority Critical patent/JPS57200802A/en
Publication of JPS57200802A publication Critical patent/JPS57200802A/en
Publication of JPS642227B2 publication Critical patent/JPS642227B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
    • G01V3/06—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current using AC

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To measure the position of the underground buried conductor by providing a returning current wire, changing the laying position of the wire, and measuring the change in the direction of the magnetic field generated from the conductor and the wire at two separated points. CONSTITUTION:The returning current wire 14 and an oscillator 15 are connected to the buried conductor 11 and closed loop is formed by utilizing a branch pipe 12, a corrosion preventing terminal 13, and the like. An AC is flowed and an alternating magnetic field is generated. When the coordinates of a point P and the direction of the buried pipe are given, the depth position of the buried pipe is obtained. When the wire 14 is deviated from the position directly over the conductor 11, an error occurs. The measurement is performed by utilizing said error. When the actual depth of the conductor 11 is 2m, the distance (a) of the wire 14 is changed by 0.2--0.3m, and the directions of the magnetic field at the measuring points P1 and P2 are measured. Then the change in the depth of the conductor 11 is taken, and curves (g) and (h) in the Figure are obtained. The true depth 2m is obtained from the intersection.
JP56086491A 1981-06-05 1981-06-05 Method for detecting buried position of underground buried conductor Granted JPS57200802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56086491A JPS57200802A (en) 1981-06-05 1981-06-05 Method for detecting buried position of underground buried conductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56086491A JPS57200802A (en) 1981-06-05 1981-06-05 Method for detecting buried position of underground buried conductor

Publications (2)

Publication Number Publication Date
JPS57200802A true JPS57200802A (en) 1982-12-09
JPS642227B2 JPS642227B2 (en) 1989-01-17

Family

ID=13888449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56086491A Granted JPS57200802A (en) 1981-06-05 1981-06-05 Method for detecting buried position of underground buried conductor

Country Status (1)

Country Link
JP (1) JPS57200802A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0415501A (en) * 1990-05-09 1992-01-20 Fujikura Ltd Method and device for measuring embedded position of metallic long-size object
CN103837900A (en) * 2013-09-09 2014-06-04 北京鼎臣超导科技有限公司 Underground cable locating method and device based on vector magnetic field detection
JP2014142247A (en) * 2013-01-23 2014-08-07 Hitachi Metals Ltd Measurement device and manufacturing method of cable for differential signal transmission
JP2016008868A (en) * 2014-06-24 2016-01-18 日鉄住金パイプライン＆エンジニアリング株式会社 Pipe locating method and pipe locating system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57190284A (en) * 1981-05-20 1982-11-22 Nippon Kokan Kk <Nkk> Detection of buried position of underground conductor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57190284A (en) * 1981-05-20 1982-11-22 Nippon Kokan Kk <Nkk> Detection of buried position of underground conductor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0415501A (en) * 1990-05-09 1992-01-20 Fujikura Ltd Method and device for measuring embedded position of metallic long-size object
JP2014142247A (en) * 2013-01-23 2014-08-07 Hitachi Metals Ltd Measurement device and manufacturing method of cable for differential signal transmission
CN103837900A (en) * 2013-09-09 2014-06-04 北京鼎臣超导科技有限公司 Underground cable locating method and device based on vector magnetic field detection
JP2016008868A (en) * 2014-06-24 2016-01-18 日鉄住金パイプライン＆エンジニアリング株式会社 Pipe locating method and pipe locating system

Also Published As

Publication number Publication date
JPS642227B2 (en) 1989-01-17

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