JPS57190284A - Detection of buried position of underground conductor - Google Patents

Detection of buried position of underground conductor

Info

Publication number
JPS57190284A
JPS57190284A JP56076083A JP7608381A JPS57190284A JP S57190284 A JPS57190284 A JP S57190284A JP 56076083 A JP56076083 A JP 56076083A JP 7608381 A JP7608381 A JP 7608381A JP S57190284 A JPS57190284 A JP S57190284A
Authority
JP
Japan
Prior art keywords
conductor
line
return current
rising
buried
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
JP56076083A
Other languages
Japanese (ja)
Other versions
JPS642226B2 (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 JP56076083A priority Critical patent/JPS57190284A/en
Publication of JPS57190284A publication Critical patent/JPS57190284A/en
Publication of JPS642226B2 publication Critical patent/JPS642226B2/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)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To enable accurate measurement of buried position of a conductor by determining changes in the direction of a synthetic magnetic field generated from the conductor and a return current line when the position of installing the return current line is changed, at two points on the surface of ground outside both sides of the conductor. CONSTITUTION:A return current line 14 is provided on the surface of ground where a conductor 11 is buried and one end thereof 14 is connected to one end of the conductor 11 through a rising line 16 while the other end of the line 14 is connected to the other end of the conductor 11 through a transmitting unit 17 and the rising line 18 to form a closed loop. The transmitting unit 17 amplifies signals from a transmitter 19 through a voltage amplifier 20 and fed to the conductor 11 through the line 14 and the rising line 16. At the same time, current values flowing through the line 14 are measured with a current measuring device 21 to adjust the amplification rate of the power amplifier 20 so as to exceed a fixed value.
JP56076083A 1981-05-20 1981-05-20 Detection of buried position of underground conductor Granted JPS57190284A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56076083A JPS57190284A (en) 1981-05-20 1981-05-20 Detection of buried position of underground conductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56076083A JPS57190284A (en) 1981-05-20 1981-05-20 Detection of buried position of underground conductor

Publications (2)

Publication Number Publication Date
JPS57190284A true JPS57190284A (en) 1982-11-22
JPS642226B2 JPS642226B2 (en) 1989-01-17

Family

ID=13594927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56076083A Granted JPS57190284A (en) 1981-05-20 1981-05-20 Detection of buried position of underground conductor

Country Status (1)

Country Link
JP (1) JPS57190284A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200802A (en) * 1981-06-05 1982-12-09 Nippon Kokan Kk <Nkk> Method for detecting buried position of underground buried conductor
JP2010066113A (en) * 2008-09-10 2010-03-25 Iwate Univ System and method for measuring metal embedding depth

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416754A (en) * 1977-06-13 1979-02-07 Gen Electric Control for air conditioner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416754A (en) * 1977-06-13 1979-02-07 Gen Electric Control for air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200802A (en) * 1981-06-05 1982-12-09 Nippon Kokan Kk <Nkk> Method for detecting buried position of underground buried conductor
JP2010066113A (en) * 2008-09-10 2010-03-25 Iwate Univ System and method for measuring metal embedding depth

Also Published As

Publication number Publication date
JPS642226B2 (en) 1989-01-17

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