CN106501863A - The super magnetic Seismic Source System of elastic wave for Cross-Well Tomographic Imaging - Google Patents
The super magnetic Seismic Source System of elastic wave for Cross-Well Tomographic Imaging Download PDFInfo
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- CN106501863A CN106501863A CN201610908314.0A CN201610908314A CN106501863A CN 106501863 A CN106501863 A CN 106501863A CN 201610908314 A CN201610908314 A CN 201610908314A CN 106501863 A CN106501863 A CN 106501863A
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- super
- super magnet
- reed
- emitter
- elastic wave
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- 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
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/083—Controlled source electromagnetic [CSEM] surveying
-
- 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
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/083—Controlled source electromagnetic [CSEM] surveying
- G01V2003/084—Sources
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of super magnetic Seismic Source System of the elastic wave of Cross-Well Tomographic Imaging, the system includes：Emitter；Super magnet, is wound with coil in the super magnet, and the coil is connected with emitter；And reed, its one end fixes, and the other end is connected with the super magnet, and when super magnet is deformed upon, extruding reed produces elastic deformation.The system work process is：Emitter changes and is carried in the magnetic field that super magnet is enclosed by adjusting coil inside electric current；Under magnetic fields, there is corresponding deformation in super magnet；Extruded by super magnet deformation, reed occurs the elastic deformation perpendicular to middle axial plane, and elastic wave radiation is gone out；Under the control of emitter, with pseudo-random sequence repeat the above steps, until pseudo-random sequence is sent completely.Pseudo-random sequence can be gone out by elastic wave radiation by present system, due to pseudo-random code spread-spectrum technology can lift system anti-interference, improve collection signal signal to noise ratio, to a certain extent lifted detection range.
Description
Technical field
The present invention relates to a kind of focus, in particular to a kind of elastic wave for pseudorandom spread spectrum Cross-Well Tomographic Imaging instrument
Seismic Source System.
Background technology
Chromatography imaging technique, is the physical field quantity obtained using object external observation, by special digital processing technology,
The distributed image of interior of articles physical property or state parameter is reappeared, so as to solve relevant engineering technology problem.With more maturation
Medical science tomography is compared, the tomography condition in engineering with for complicated, be mainly manifested in penetration range not enough and detection away from
From conflicting with resolution ratio the problems such as.
From the point of view of current technical research, geophysics chromatography imaging technique be primarily present big thoroughly away from and its high-resolution detection
Problem, and the resolution ratio of geophysics chromatography imaging technique is restricted by two aspect factors：One is the frequency of transmission signal；Two
It is the density of ray, that is, is imaged the size of grid.Operating frequency condition in above-mentioned conventional at present electromagnetic wave tomography instrument
Under, resolution ratio is relatively low, and existing technology can't solve problem above well.
Content of the invention
In view of above-mentioned the deficiencies in the prior art, the bullet for pseudorandom spread spectrum Cross-Well Tomographic Imaging instrument of present invention design
Property ripple Seismic Source System, by pseudo-random code spread-spectrum skill upgrading system rejection to disturbance, improve the signal to noise ratio of collection signal, certain
Detection range is lifted in degree, solves the problems, such as that penetration range is inadequate.
Realize that the technical scheme that the object of the invention is adopted is a kind of super magnetic Seismic Source System of elastic wave of Cross-Well Tomographic Imaging, should
System includes：
Emitter；
Super magnet, is wound with coil in the super magnet, and the coil is connected with emitter；And
Reed, its one end are fixed, and the other end is connected with the super magnet, and when super magnet is deformed upon, extruding reed produces bullet
Property deformation.
Additionally, the present invention also provides a kind of method for obtaining elastic wave by said system, the method includes：
S100, emitter change and are carried in the magnetic field that super magnet is enclosed by adjusting coil inside electric current；
S200, under magnetic fields, there is corresponding deformation in super magnet；
S300, extruded by super magnet deformation, reed occurs the elastic deformation perpendicular to middle axial plane, and by elastic amplitude
It is shot out；
S400, under the control of emitter, with pseudo-random sequence repeat step S100～S200, until pseudo-random sequence send out
Send and complete.
Pseudo-random sequence can be gone out by elastic wave radiation by present system, due to pseudo-random code spread-spectrum technology
Can lift system anti-interference, improve collection signal signal to noise ratio, to a certain extent lifted detection range.
Description of the drawings
Structural representations of the Fig. 1 for the super magnetic Seismic Source System of elastic wave of embodiment Cross-Well Tomographic Imaging.
It is numbered in figure：1- shells, 2- emitters, 3- super magnets, 4- coils, 5- reeds, 6- fix weight.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the super magnetic Seismic Source System of the elastic wave of the present embodiment Cross-Well Tomographic Imaging includes：Emitter 2, super magnet
3 and reed 5.Super magnet 3 is made up of super magnetic material, is wound with coil 4 in the super magnet 3, and coil 4 is connected with emitter 2；Transmitting
Machine 2 changes the magnetic field being carried in around super magnet 3 by adjusting 4 internal current of coil.One end of reed 5 is fixed, the other end with
Super magnet 3 connects, and 3 surrounding magnetic field of super magnet can be deformed upon when changing, and reed 5 is squeezed generation elastic deformation, and
Elastic wave radiation is gone out.
For the ease of outdoor operations, the system can also include that one fixes weight 6, and the other end of reed 5 is fixed on this admittedly
Determine on weight 6.
This is, for the ease of placing, the system can also include a shell 1, and emitter 2 is in shell 1；Reed 5
One end is fixedly connected with fixed weight 6, and the other end is connected with shell 1；One end of the super magnet 3 is fixed in shell 1, another
End is fixed on fixed weight 6, and one end that super magnet 3 is fixed on fixed weight 6 is connected with the other end of reed 5 so that super
When magnet 6 is deformed upon, extruding reed 5 produces elastic deformation.
The present invention is as follows for the course of work of the elastic wave Seismic Source System of pseudorandom spread spectrum Cross-Well Tomographic Imaging instrument：
S100, emitter change and are carried in the magnetic field that super magnet is enclosed by adjusting coil inside electric current；
S200, under magnetic fields, there is corresponding deformation in super magnet；
S300, extruded by super magnet deformation, reed occurs the elastic deformation perpendicular to middle axial plane, and by elastic amplitude
It is shot out；
S400, under the control of emitter, with pseudo-random sequence repeat step S100～S200, until pseudo-random sequence send out
Send and complete.
Claims (4)
1. the super magnetic Seismic Source System of a kind of elastic wave of Cross-Well Tomographic Imaging, it is characterised in that include：
Emitter；
Super magnet, is wound with coil in the super magnet, and the coil is connected with emitter；And
Reed, its one end are fixed, and the other end is connected with the super magnet, and when super magnet is deformed upon, extruding reed produces elastic shape
Become.
2. the super magnetic Seismic Source System of elastic wave of Cross-Well Tomographic Imaging is used for according to claim 1, it is characterised in that also wrapped
Include：
Fixed weight, the other end of the reed are fixed on the fixation weight.
3. the super magnetic Seismic Source System of elastic wave of Cross-Well Tomographic Imaging is used for according to claim 2, it is characterised in that also included：
Shell, the emitter are located inside the shell；One end of the reed is fixedly connected with fixed weight, and the other end is connected with shell
Connect；One end of the super magnet is fixed in shell, and the other end is fixed on the fixed weight, and the super magnet is fixed on
The one end that determines on weight is connected with the other end of reed so that when super magnet is deformed upon, extruding reed produces elastic deformation.
4. a kind of by described in claim 1 system obtain elastic wave method, it is characterised in that include：
S100, emitter change and are carried in the magnetic field that super magnet is enclosed by adjusting coil inside electric current；
S200, under magnetic fields, there is corresponding deformation in super magnet；
S300, extruded by super magnet deformation, reed occurs the elastic deformation perpendicular to middle axial plane, and elastic wave radiation is gone out
Go；
S400, under the control of emitter, with pseudo-random sequence repeat step S100～S200, until pseudo-random sequence sent
Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610908314.0A CN106501863A (en) | 2016-10-18 | 2016-10-18 | The super magnetic Seismic Source System of elastic wave for Cross-Well Tomographic Imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610908314.0A CN106501863A (en) | 2016-10-18 | 2016-10-18 | The super magnetic Seismic Source System of elastic wave for Cross-Well Tomographic Imaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106501863A true CN106501863A (en) | 2017-03-15 |
Family
ID=58294776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610908314.0A Pending CN106501863A (en) | 2016-10-18 | 2016-10-18 | The super magnetic Seismic Source System of elastic wave for Cross-Well Tomographic Imaging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106501863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794449A (en) * | 2019-11-15 | 2020-02-14 | 中国矿业大学 | Vibroseis device and installation method thereof |
-
2016
- 2016-10-18 CN CN201610908314.0A patent/CN106501863A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794449A (en) * | 2019-11-15 | 2020-02-14 | 中国矿业大学 | Vibroseis device and installation method thereof |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170315 |
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| RJ01 | Rejection of invention patent application after publication |