JPS56140275A - Measuring method of buried position of underground cable - Google Patents

Measuring method of buried position of underground cable

Info

Publication number
JPS56140275A
JPS56140275A JP4316580A JP4316580A JPS56140275A JP S56140275 A JPS56140275 A JP S56140275A JP 4316580 A JP4316580 A JP 4316580A JP 4316580 A JP4316580 A JP 4316580A JP S56140275 A JPS56140275 A JP S56140275A
Authority
JP
Japan
Prior art keywords
buried
cable
ground surface
measuring
current
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.)
Pending
Application number
JP4316580A
Other languages
Japanese (ja)
Inventor
Susumu Hasegawa
Ryosuke Kaizu
Michihiko Kusunoki
Satoshi Yamazaki
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP4316580A priority Critical patent/JPS56140275A/en
Publication of JPS56140275A publication Critical patent/JPS56140275A/en
Pending 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)
  • Electric Cable Installation (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To search buried position of cable accurately even in case of existence of other buried material around here by measuring ground surface magnetic fields of plural points on a plane right angle with the buried cable and selecting an appropriate point from said measuring points. CONSTITUTION:AC current is flowed to the buried cable 1, thereby selecting a standard point P0 on a ground surface of a plane right angle with a current direction to set a X-Y plane. In a plurality of arbitrary points, the ground surface magnetic field caused by the current of the cable 1 is detected by the rotation of a search coil 2. The detecting signal is inputted by an operating unit 5 selectively amplifying a signal frequency component with a selective amplifier 3. In the operating unit 5, a rotary angle of a coil by which the signal becomes min. is obtained by a rotary angle indicator 4, whereby a magnetic vector direction alpha and a magnetic measuring point beta are input to a data processing part 7. The above step is performed in each measuring point and unnecessary data are omitted at the data processing part. Thus the information of the buried position having a high flux is provided to an indicator 8.
JP4316580A 1980-04-02 1980-04-02 Measuring method of buried position of underground cable Pending JPS56140275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4316580A JPS56140275A (en) 1980-04-02 1980-04-02 Measuring method of buried position of underground cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4316580A JPS56140275A (en) 1980-04-02 1980-04-02 Measuring method of buried position of underground cable

Publications (1)

Publication Number Publication Date
JPS56140275A true JPS56140275A (en) 1981-11-02

Family

ID=12656255

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4316580A Pending JPS56140275A (en) 1980-04-02 1980-04-02 Measuring method of buried position of underground cable

Country Status (1)

Country Link
JP (1) JPS56140275A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59163586A (en) * 1983-03-08 1984-09-14 Nec Corp Detecting method of buried electric conductor
JPS62297776A (en) * 1986-06-17 1987-12-24 Nec Corp Position detecting method for buried conductor
JP2014199227A (en) * 2013-03-29 2014-10-23 大阪瓦斯株式会社 Receiver of underground-pipe detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59163586A (en) * 1983-03-08 1984-09-14 Nec Corp Detecting method of buried electric conductor
JPS62297776A (en) * 1986-06-17 1987-12-24 Nec Corp Position detecting method for buried conductor
JP2014199227A (en) * 2013-03-29 2014-10-23 大阪瓦斯株式会社 Receiver of underground-pipe detection device

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