CN109765627A - Plane wave electromagnetic sounding method suitable for mountainous region - Google Patents
Plane wave electromagnetic sounding method suitable for mountainous region Download PDFInfo
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- CN109765627A CN109765627A CN201910175763.2A CN201910175763A CN109765627A CN 109765627 A CN109765627 A CN 109765627A CN 201910175763 A CN201910175763 A CN 201910175763A CN 109765627 A CN109765627 A CN 109765627A
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- plane wave
- mountainous region
- wave electromagnetic
- measurement
- electromagnetic sounding
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Abstract
The invention discloses a kind of plane wave electromagnetic sounding methods suitable for mountainous region, including design survey line and measuring point；Determine the placement state of observation device；Start to measure and acquire electric and magnetic fields data and handle；Draw the resistivity on measurement ground and the image of depth section.This plane wave electromagnetic sounding method suitable for mountainous region provided by the invention, resistivity sounding data is more acurrate, and observation horizontal component of electric field is moved towards along hillside, and observation magnetic field is tangential along hillside, and observed result is small by the influence of topography and field operation is simple.
Description
Technical field
Present invention relates particularly to a kind of plane wave electromagnetic sounding methods suitable for mountainous region.
Background technique
With the development and the improvement of people's living standards of economic technology, people also get over the attention degree of basic subject
Come higher.
Plane wave electromagnetic depth method is mainly based upon Carnot model and carrys out Study of The Underground resistivity space distribution situation.It passes
System plane wave electromagnetic sounding method, including magnetotelluric sounding method (MT)), audiomagnetotelluric sounding method (AMT), controllable source are big
Ground electromagnetic depth method (CSAMT) etc. is all the mutually orthogonal horizontal component of electric field and magnetic-field component of detection, is wanted when sloping floor is observed
Manual operation (pit digging) is asked to observe horizontal component of electric field and magnetic field, electrode spacing must convert horizontally pole span length, depth measurement direction
For vertical-horizontal downwards.
Mountain topography tilts more in practice, by the manual operations such as pit digging and conversion to obtain the operation of levels electromagnetic field not
But it is cumbersome, and it is also easy to produce large error.
Summary of the invention
The purpose of the present invention is to provide a kind of easy to operate and being capable of accurate evaluation mountainous region subsurface resistivity variations situation
The plane wave electromagnetic sounding method suitable for mountainous region.
This plane wave electromagnetic sounding method suitable for mountainous region provided by the invention, includes the following steps:
S1. according to the lineament of measurement task and measurement ground, survey line and measuring point are designed；
S2. according to the lineament on measurement ground, the placement state of observation device is determined；
S3. start to measure, acquire electric and magnetic fields data and handled；
S4. according to step S3 treated data, the resistivity on measurement ground and the image of depth section are drawn.
The placement state of determination observation device described in step S2 specially determines placement state using following rule:
It R1. is the horizontal direction y along massif trend；
R2. vertical massif is horizontally orientated to as the horizontal direction x；
It R3. is the direction t along hillside interface tangential direction；
R4. the electrode-electric pole line for observing electric field is parallel to massif trend, in the y-direction；
R5. bar magnet is moved towards perpendicular to massif, and is placed in earth's surface along hillside section, along the direction t.
The image of the resistivity on drafting measurement ground and depth section described in step S4, specially at depth measurement direction when scheming
It is downward for ground surface normal direction.
This plane wave electromagnetic sounding method suitable for mountainous region provided by the invention, resistivity sounding data is more acurrate,
Observation horizontal component of electric field is moved towards along hillside, and observation magnetic field is tangential along hillside, and observed result is small by the influence of topography and field is grasped
Make simple.
Detailed description of the invention
Fig. 1 is the method flow diagram of the method for the present invention.
Fig. 2 is the image schematic diagram of existing resistivity and depth section.
Fig. 3 is the resistivity of the method for the present invention and the image schematic diagram of depth section.
Specific embodiment
It is as shown in Figure 1 the method flow diagram of the method for the present invention: this plane wave suitable for mountainous region provided by the invention
Electromagnetic sounding method includes the following steps:
S1. according to the lineament of measurement task and measurement ground, survey line and measuring point are designed；
S2. according to the lineament on measurement ground, the placement state of observation device is determined；Specially determined using following rule
Placement state:
It R1. is the horizontal direction y along massif trend；
R2. vertical massif is horizontally orientated to as the horizontal direction x；
It R3. is the direction t along hillside interface tangential direction；If (ground level, x to t to consistent)
R4. the electrode-electric pole line for observing electric field is parallel to massif trend, i.e., in the y-direction；
R5. bar magnet is moved towards perpendicular to massif, and is placed in earth's surface along hillside section, i.e., along the direction t；
S3. start to measure, acquire electric and magnetic fields data and handled；Data acquisition and processing (DAP) is according to conventional planar wave
Electromagnetic sounding law theory；
S4. according to step S3 treated data, the resistivity on measurement ground and the image of depth section are drawn；Specifically at figure
When, depth measurement direction is that ground surface normal direction is downward.
It is as shown in Figure 2 the image schematic diagram of existing resistivity and depth section；It is as shown in Figure 3 present invention side
The resistivity of method and the image schematic diagram of depth section, data point are distributed along the transmission direction of point position electromagnetic wave.
Claims (3)
1. a kind of plane wave electromagnetic sounding method suitable for mountainous region, includes the following steps:
S1. according to the lineament of measurement task and measurement ground, survey line and measuring point are designed；
S2. according to the lineament on measurement ground, the placement state of observation device is determined；
S3. start to measure, acquire electric and magnetic fields data and handled；
S4. according to step S3 treated data, the resistivity on measurement ground and the image of depth section are drawn.
2. the plane wave electromagnetic sounding method according to claim 1 suitable for mountainous region, it is characterised in that described in step S2
Determination observation device placement state, placement state is specially determined using following rule:
It R1. is the horizontal direction y along massif trend；
R2. vertical massif is horizontally orientated to as the horizontal direction x；
It R3. is the direction t along hillside interface tangential direction；
R4. the electrode-electric pole line for observing electric field is parallel to massif trend, in the y-direction；
R5. bar magnet is moved towards perpendicular to massif, and is placed in earth's surface along hillside section, along the direction t.
3. the plane wave electromagnetic sounding method according to claim 1 or 2 suitable for mountainous region, it is characterised in that step S4 institute
State drafting measurement ground resistivity and depth section image, specially at figure when depth measurement direction be ground surface normal direction to
Under.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910175763.2A CN109765627B (en) | 2019-03-08 | 2019-03-08 | Plane wave electromagnetic depth sounding method suitable for mountainous region |
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| CN201910175763.2A CN109765627B (en) | 2019-03-08 | 2019-03-08 | Plane wave electromagnetic depth sounding method suitable for mountainous region |
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| CN109765627A true CN109765627A (en) | 2019-05-17 |
| CN109765627B CN109765627B (en) | 2020-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111983701A (en) * | 2020-09-01 | 2020-11-24 | 湖南五维地质科技有限公司 | Transverse geodetic electromagnetic wave depth measuring method and depth measuring device thereof |
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| US20060015255A1 (en) * | 2003-02-13 | 2006-01-19 | Sorensen Kurt I | Measuring equipment and method for mapping the geology in an underground formation |
| CN101706585A (en) * | 2009-10-28 | 2010-05-12 | 中南大学 | Method for electrically forecasting danger in underground tunneling engineering |
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2019
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Patent Citations (4)
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| US20060015255A1 (en) * | 2003-02-13 | 2006-01-19 | Sorensen Kurt I | Measuring equipment and method for mapping the geology in an underground formation |
| CN101706585A (en) * | 2009-10-28 | 2010-05-12 | 中南大学 | Method for electrically forecasting danger in underground tunneling engineering |
| RU2009148966A (en) * | 2009-12-28 | 2011-07-10 | Учреждение Российской академии наук Полярный геофизический институт Кольского научного центра РАН (ПГИ КНЦ РАН) (RU) | METHOD FOR DEPTH EARTH SENSING |
| CN102062876A (en) * | 2010-11-17 | 2011-05-18 | 汤井田 | Electrical sounding method for whole-region couple source frequency domain |
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| 张国鸿等: "可控源音频大地电磁法深部找矿实验效果", 《物探与化探》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111983701A (en) * | 2020-09-01 | 2020-11-24 | 湖南五维地质科技有限公司 | Transverse geodetic electromagnetic wave depth measuring method and depth measuring device thereof |
| CN111983701B (en) * | 2020-09-01 | 2023-10-10 | 湖南五维地质科技有限公司 | Transverse magnetotelluric wave sounding method and sounding device thereof |
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| CN109765627B (en) | 2020-04-03 |
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