JPS56126787A - Measurement of depth of underground body - Google Patents
Measurement of depth of underground bodyInfo
- Publication number
- JPS56126787A JPS56126787A JP2974180A JP2974180A JPS56126787A JP S56126787 A JPS56126787 A JP S56126787A JP 2974180 A JP2974180 A JP 2974180A JP 2974180 A JP2974180 A JP 2974180A JP S56126787 A JPS56126787 A JP S56126787A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- return current
- underground
- magnetic field
- depth
- 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
Links
- 238000005259 measurement Methods 0.000 title 1
- 238000001514 detection method Methods 0.000 abstract 4
- 230000006698 induction Effects 0.000 abstract 2
- 238000005352 clarification Methods 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
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 arrange so that the depth of an underground object can be measured with high precision, with the clarification of a channel for a return current, by providing an electric channel for a return current on the ground in parallel with an underground object such as gas pipe, etc. CONSTITUTION:An electric channel 13 for a return current is laid on the ground 5 in parallel with an underground object 1 and a location where a detection coil 9 inside a detection rod 8 is at a right angle with a composite magnetic field of a magnetic field by an underground located object 1 and a magnetic field by an electric channel 13 for a return current, is sought. That is, a signal of induction electromotive force from the detection coil 9 is detected by means of a receiver 21 and then is supplied to an arithmetic processing device 22. In the meantime, to this arithmetic processing device 22, a signal of set inclination angle from a detection rod 8 and a signal of the movement distance of a truck 17 from a ragne finder 20 are supplied. Following this process, the buried depth of an underground object 1 is operated under an arithmetic formula based on a signal of movement distance when a signal of induction electromotive force is zero and a signal of set inclination angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2974180A JPS56126787A (en) | 1980-03-11 | 1980-03-11 | Measurement of depth of underground body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2974180A JPS56126787A (en) | 1980-03-11 | 1980-03-11 | Measurement of depth of underground body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56126787A true JPS56126787A (en) | 1981-10-05 |
Family
ID=12284520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2974180A Pending JPS56126787A (en) | 1980-03-11 | 1980-03-11 | Measurement of depth of underground body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56126787A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100879876B1 (en) | 2008-03-06 | 2009-01-22 | 신상열 | Instrument for measuring settlement level and soil quality of landfill |
| JP2016003995A (en) * | 2014-06-18 | 2016-01-12 | 株式会社コベルコ科研 | Method for inspecting thickness reduction of border portion of partially buried structure |
-
1980
- 1980-03-11 JP JP2974180A patent/JPS56126787A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100879876B1 (en) | 2008-03-06 | 2009-01-22 | 신상열 | Instrument for measuring settlement level and soil quality of landfill |
| JP2016003995A (en) * | 2014-06-18 | 2016-01-12 | 株式会社コベルコ科研 | Method for inspecting thickness reduction of border portion of partially buried structure |
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