CN106842334A - A kind of electromagnetic exploration method and device - Google Patents
A kind of electromagnetic exploration method and device Download PDFInfo
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- CN106842334A CN106842334A CN201611140125.XA CN201611140125A CN106842334A CN 106842334 A CN106842334 A CN 106842334A CN 201611140125 A CN201611140125 A CN 201611140125A CN 106842334 A CN106842334 A CN 106842334A
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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
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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
- G01V3/38—Processing data, e.g. for analysis, for interpretation, for correction
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Abstract
The embodiment of the present application provides a kind of electromagnetic exploration method and device, wherein, electromagnetic exploration method is comprised the following steps：The electromagnetic signal of the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency is controlled, wherein, the first simultaneous shot field source and the second simultaneous shot field source are symmetrical and are set in parallel in survey line both sides, and survey line is moved towards perpendicular to the construction of exploration targets；Acquisition station on control survey line gathers electromagnetic data corresponding with the electromagnetic signal.Because the program symmetrically lays identical simultaneous shot field source in survey line both sides, and by two electromagnetic signals of identical simultaneous shot field source synchronized transmission same frequency, so that treating survey area maintaining uniform illumination, and then signal to noise ratio is improve, reduce Source effects.Therefore exploration result present in existing electromagnetic exploration method is solved inaccurate, the low technical problem of efficiency has reached improvement exploration result precision, improves the technique effect of exploration efficiency.
Description
Technical field
The application is related to technical field of geophysical exploration, more particularly to a kind of electromagnetic exploration method and device.
Background technology
In field of geophysical exploration, generally require to first pass through and treat survey area transmission electromagnetic signal, then gather phase
The electromagnetic data answered, so as to realize researching and analysing exploration targets.At present, it is general it is widely used be controllable source audio frequency electromagnetism
The controllable source EMP method such as exploitation method and skew transient electromagnetic exploitation method long.
Above-mentioned electromagnetic exploration method in the specific implementation, generally only does generally for reception measuring point and once excites, acquisition station
Corresponding electromagnetic data is received in certain limit that can only be near field source.When an exciting field for field source can not cover receiving point
When, the signal to noise ratio of signal can be than relatively low, it is impossible to meets exploration and requires.At this moment, another correct position cloth again can typically be selected
If field source.Therefore, haveed the shortcomings that using the single controllable source EMP method for exciting field source following：Firstly, since subterranean
The exciting field in the complexity made, diverse location or orientation causes electromagnetic field to be transmitted across due to the influence of earth formation lithology difference
Cheng Butong, obvious difference can be produced in receiving point.Secondly as the distance in source of leaving the theatre is different, by ground, aerial and underground
The field signal composition difference for reaching receiving point is very big, i.e., illuminance is different.Therefore, the field source characteristic of receiving point there is also difference.
Gone directly wave field for such as near region, predominantly underground, and far field is mainly from ground or airborne plane wave.So, receive
Signal seriously influenceed by non-exploration targets.Additionally, also there is transition region between near region and far field, cause electromagnetic nature more
It is complexity.For these reasons, traditional controllable source electromagnetic prospecting method causes tool usually because Source effects are high and signal to noise ratio is low
When body is implemented, there is the exploration technical problem that result precision is poor, exploration efficiency is low.
Regarding to the issue above, effective solution is not yet proposed at present.
The content of the invention
The embodiment of the present application provides a kind of electromagnetic exploration method and device, to solve the exploration that existing electromagnetic method is present
The technical problem that result precision is poor, exploration efficiency is low.
The embodiment of the present application provides a kind of electromagnetic exploration method, including：
The electromagnetic signal of the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency is controlled, its
In, the first simultaneous shot field source and the second simultaneous shot field source are symmetrical and are set in parallel in survey line both sides, the survey
Line is moved towards perpendicular to the construction of exploration targets；
Acquisition station on control survey line gathers electromagnetic data corresponding with the electromagnetic signal.
In one embodiment, the survey line includes a plurality of survey line, wherein, each bar survey line phase in a plurality of survey line
Mutual parallel and equal length.
In one embodiment, the length of the first simultaneous shot field source, the length of the second simultaneous shot field source
The equal length of degree and the survey line.
In one embodiment, multiple measuring points are included on the survey line, wherein, it is two neighboring in the multiple measuring point
Spacing distance between measuring point is 50 meters to 200 meters.
In one embodiment, it is respectively equipped with acquisition station on each measuring point in multiple measuring points of the survey line.
In one preferred embodiment, the acquisition station collection on control survey line is corresponding with the electromagnetic signal electric
After magnetic data, methods described also includes：
Translate the first simultaneous shot field source, the second simultaneous shot field source and the survey line；
The electromagnetism of the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency after control translation
Signal；
The acquisition station on survey line after control translation gathers electromagnetic data corresponding with the electromagnetic signal.
In one embodiment, the first simultaneous shot field source, the second simultaneous shot field source and described are translated
Survey line, including：
It is determined that whether exploration length is more than predetermined threshold value；
If greater than the predetermined threshold value, then the first simultaneous shot field source, the second simultaneous shot field source are translated
With the survey line.
In one embodiment, the survey line after the translation is Chong Die with least two measuring points of survey line before translation.
In one embodiment, it is described in control the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions
Before the electromagnetic signal of same frequency, methods described also includes：
According to the size of the exploration targets, it is determined that exploration length；
If the exploration length is less than or equal to predetermined threshold value, the exploration length is added the length after default surplus
Degree, as the length of the survey line；
According to the length of the survey line, the survey line is laid.
In one embodiment, in the size according to the exploration targets, it is determined that after exploration length, methods described is also
Including：
If the exploration length is more than the predetermined threshold value, by the half of the exploration length plus described default remaining
Length after the half of amount, as the length of the survey line；
According to the length of the survey line, the survey line is laid.
In one embodiment, the electromagnetic data is any one in following combination：
The electric-field intensity in x-axis direction；
The electric-field intensity in x-axis direction and the magnetic field intensity in z-axis direction；
The magnetic field intensity of the electric-field intensity, the magnetic field intensity in z-axis direction and y-axis direction in x-axis direction；
The electric-field intensity in x-axis direction, the electric-field intensity in y-axis direction, the magnetic field intensity in z-axis direction, y-axis direction magnetic field it is strong
Degree and the magnetic field intensity in x-axis direction；
Wherein, the x-axis direction be parallel to ground and with the first simultaneous shot field source and it is described second it is synchronous swash
The parallel direction of hair field source, the y-axis direction be parallel to ground but with the first simultaneous shot field source and described second same
Step excites the vertical direction of field source, and the z-axis direction is perpendicular to the direction on ground.
Based on identical inventive concept, the embodiment of the present application additionally provides a kind of electromagnetic survey device, including：
Transmitter module, for controlling the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency
Electromagnetic signal, wherein, the first simultaneous shot field source and the second simultaneous shot field source are symmetrical, and are set in parallel in survey line
Both sides, the survey line is moved towards perpendicular to the construction of exploration targets；
Acquisition module, for controlling the acquisition station on survey line to gather electromagnetic data corresponding with the electromagnetic signal.
In one embodiment, the electromagnetic survey device also includes：
Translation module, for according to exploration length, translating the first simultaneous shot field source, second simultaneous shot
Source and the survey line.
In the embodiment of the present application, identical simultaneous shot field source is laid by the both sides of survey line are symmetrical parallel, and is controlled
Two simultaneous shot field source synchronized transmissions frequency identical electromagnetic signals of system so that survey area maintaining uniform illumination is treated, so as to improve
Signal to noise ratio, reduces Source effects.Therefore, to solve and explore result precision present in existing electromagnetic exploration method
The low technical problem of difference, exploration efficiency, realizes the degree of accuracy for improving exploration result and the technique effect for improving exploration efficiency.
Brief description of the drawings
In order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the process chart of the electromagnetic exploration method according to the embodiment of the present application；
Fig. 2 is the process chart that rolling prospecting is carried out according to the electromagnetic exploration method of the embodiment of the present application；
Fig. 3 is the composition structure chart of the electromagnetic survey device according to the embodiment of the present application；
Fig. 4 is the electromagnetic exploration method/device using the embodiment of the present application offer to showing that certain exploration targets is explored
It is intended to.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, below in conjunction with the application reality
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
In view of existing electromagnetic exploration method, typically it is divided to two kinds：One kind is to excite field source to carry out electromagnetism to survey using single
Prospect, because only one of which excites field source often to there is survey area illumination inequality during specific implementation, and then reduce noise
Than increase field source influence causes to explore the technical problem of result precision difference.Another kind is can using four orientation all standing three-dimensionals
Control source electromagnetic data acquisition method, i.e., laid in four orientation and excite field source, and survey area all standing exploration is treated in formation.The party
Although method improves lighting condition, but because the field source that excites in four orientation is not symmetrical laying, nor simultaneous shot, works as survey
After line direction is certain, excitaton source normal thereto causes to be difficult to carry out during specific implementation due to exciting coupled relation poor, implements effect
It is really unsatisfactory.Further, since it is singly to excite that four excite field source, acquisition time be it is single excite 4 times of field source,
Therefore also there is the low technical problem of exploration efficiency in the method.For the basic reason for producing above-mentioned technical problem, the application is examined
Worry can symmetrically lay identical simultaneous shot field source in survey line both sides, identical by the two simultaneous shot field source synchronized transmissions
The electromagnetic signal of frequency so that survey area maintaining uniform illumination, and then improve signal to noise ratio, Source effects are reduced, such that it is able to solve
The exploration technical problem that result precision is poor, exploration efficiency is low, realizes improving exploration result precision, improves the skill of exploration efficiency
Art effect.
Based on above-mentioned thinking thinking, this application provides a kind of electromagnetic exploration method.Refer to Fig. 1.What the application was provided
Electromagnetic exploration method, may comprise steps of.
Step 101：Control the electromagnetism of the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency
Signal, wherein, the first simultaneous shot field source and the second simultaneous shot field source are symmetrical and are set in parallel in survey line both sides,
The survey line is moved towards perpendicular to the construction of exploration targets.
In one embodiment, in order to ensure the accuracy of the electromagnetic data of collection, synchronous swash laying above-mentioned first
Hair field source, the second simultaneous shot field source and during survey line, can control the length of the first simultaneous shot field source, described second same
Step excites the length of field source and the equal length of the survey line.It is the first simultaneous shot field source, second same for example, may be referred to Fig. 4
Step excite field source all with 3 equal lengths of survey line.
In the present embodiment, it is necessary to what is illustrated is：Why by the first simultaneous shot field source and described second
Simultaneous shot field source is symmetrical and is set in parallel in survey line both sides, maintaining uniform illumination when can so cause specific implementation, and then can be with
Signal to noise ratio is reduced, the degree of accuracy of measurement exploration is improved.Additionally, why the construction by the survey line perpendicular to exploration targets is walked
To setting, the electromagnetic wave that can so better profit from exciting field source to produce is carried out more to the concrete structure of exploration targets, content
Added with effect, accurate Reconnaissance Survey.
Step 102：Acquisition station on control survey line gathers electromagnetic data corresponding with the electromagnetic signal.
In one embodiment, letter is characterized in order to gather more electromagnetic datas, and improve the electromagnetic data of collection
The accuracy of breath, when survey line is laid, the survey line can include a plurality of survey line, wherein, each bar in a plurality of survey line is surveyed
Line is parallel to each other and equal length.For example, 5 surveys line, wherein this 5 surveys line can be laid perpendicular to the trend of exploration targets
Equal length, and it is parallel to each other.Additionally, the spacing in 5 surveys line between each bar survey line and other surveys line can be controlled in 200-
In the range of 2000 meters.Furthermore it is also possible to using survey line most middle in 5 surveys line as symmetry axis, above-mentioned first simultaneous shot
Field source and the second simultaneous shot field source can symmetrically be laid in the both sides of the survey line according to this symmetry axis.
In one embodiment, actual geological condition, Ke Yi can well be reacted in order to ensure the electromagnetism number of collection
A measuring point is laid every a segment distance on above-mentioned survey line, wherein, the spacing distance between two neighboring measuring point is 50 meters to 200
Rice；Again acquisition station is respectively equipped with each measuring point in the multiple measuring point.
In one embodiment, in order to gather required electromagnetic data, the electromagnetic data tool as the case may be
Body can be any one in following combination：
The electric-field intensity in x-axis direction；
The electric-field intensity in x-axis direction and the magnetic field intensity in z-axis direction；
The magnetic field intensity of the electric-field intensity, the magnetic field intensity in z-axis direction and y-axis direction in x-axis direction；
The electric-field intensity in x-axis direction, the electric-field intensity in y-axis direction, the magnetic field intensity in z-axis direction, y-axis direction magnetic field it is strong
Degree and the magnetic field intensity in x-axis direction；
Wherein, the x-axis direction be parallel to ground and with the first simultaneous shot field source and it is described second it is synchronous swash
The parallel direction of hair field source, the y-axis direction be parallel to ground but with the first simultaneous shot field source and described second same
Step excites the vertical direction of field source, and the z-axis direction is perpendicular to the direction on ground.
However, here it should also be noted that the combination of above-mentioned cited various electromagnetic datas is intended merely to preferably say
The schematically illustrate example that bright the embodiment of the present application is provided, can also include other combination.Can specifically be surveyed according to actual
Visit requirement, specifically used exploring equipment and determine the composite type of the electromagnetic data to be gathered.In this regard, the application does not make herein
Limit.
In the embodiment of the present application, compared to existing electromagnetic exploration method, by the symmetrical parallel cloth in the both sides of survey line
If identical simultaneous shot field source, and control two simultaneous shot field source synchronized transmissions frequency identical electromagnetic signals so that treat
Survey area maintaining uniform illumination, improves signal to noise ratio, reduces Source effects.Therefore, in solving existing electromagnetic exploration method
The exploration technical problem that result precision is poor, exploration efficiency is low of presence, realizes the degree of accuracy and raising for improving exploration result
The technique effect of exploration efficiency.
In another embodiment, in order to fully using existing device, equipment, realize the exploration mesh larger to scope
Mark carries out electromagnetic survey, and electromagnetic survey can be carried out by the way of rolling prospecting.Fig. 2 can be referred to.According to above-mentioned electricity
After magnetic exploitation method completes to survey the electromagnetism of the Part I of exploration length, can specifically be performed according to following steps.
Step 201：Translate the first simultaneous shot field source, the second simultaneous shot field source and the survey line.
In the present embodiment, in order to determine the need for carrying out electromagnetic survey using roll mode, described in above-mentioned translation
First simultaneous shot field source, the second simultaneous shot field source and the survey line, can specifically include：
S1：It is determined that whether exploration length is more than predetermined threshold value；
In the present embodiment, the predetermined threshold value can be the length threshold for setting as the case may be.For example,
Here according to conventional equipment situation, 10 kms are set used as predetermined threshold value.
S2：If greater than the predetermined threshold value, then the first simultaneous shot field source, second simultaneous shot are translated
Source and the survey line.
In one embodiment, in order that the gathered data before must translating can be connected with the gathered data after translation
Come, it is to avoid nonsynchronous problem.During specific implementation, the survey line after the translation can be with least two surveys of the survey line before translation
Point is overlapped.Here, in addition it is also necessary to explanation, above-mentioned at least two measuring point is overlapped, and can be two measuring points overlaps, or three
The overlap of individual, four or more multi-measuring point, does not apply this being not construed as limiting.Further, it is also possible to after controlling to translate first is synchronous
The common earth point of the first simultaneous shot field source before exciting field source and translating.Likewise, the second simultaneous shot after control translation
The common earth point of the second simultaneous shot field source before source and translation.For example, during specific implementation, Fig. 4 can be referred to.After translation first
Simultaneous shot field sourceWith the first simultaneous shot field source before translationCommon earth point, that is, the first simultaneous shot after translating
The earth point of field sourceWith the earth point of the first simultaneous shot temple before translationIt is same point.Likewise, after translation the
One synchronous exciting field sourceWith the first simultaneous shot field source before translationCommon earth point, that is, the first simultaneous shot after translating
The earth point of field sourceWith the earth point of the first simultaneous shot temple before translationIt is same point.
The length of survey line when in one embodiment, in order to determine to lay survey line, is controlling the first simultaneous shot field source
Before the electromagnetic signal of the second simultaneous shot field source synchronized transmissions same frequency, can also be performed according to following steps：
S1：According to the size of the exploration targets, it is determined that exploration length；
In the present embodiment, specifically may be referred to Fig. 4.According to the shapes and sizes of exploration targets, hung down in exploration targets
On straight direction, exploration length when setting suitable length as specific implementation.Moved towards further along being constructed perpendicular to exploration targets
Direction on, lay the first simultaneous shot field source of corresponding length, the second simultaneous shot field source and survey line.For example, in Fig. 4, surveying
Chief inspector's degree can think line segmentBetween length.
S2：If the exploration length is less than or equal to predetermined threshold value, after the exploration length is added into default surplus
Length, as the length of the survey line；
In the present embodiment, in order to further improve the accuracy of the electromagnetic data of collection, the essence of measurement result is improved
Exactness, the length that will explore the default surplus in the part outside length is acquired, explores simultaneously as background data.Therefore, this
In can, when exploring length and being less than or equal to 10 km, the exploration length be added total length of default surplus, as
The length of survey line.It should be noted that default surplus here, the specific implementation situation according to the embodiment of the present application, are set to
The 30% of exploration length.Certainly, 30% here is in order to the schematic parameter that the embodiment of the present application is given is better described.Tool
When body is implemented, suitable data can be set used as default surplus according to actual needs and concrete condition.In this regard, the application is not
It is construed as limiting.
S3：According to the length of the survey line, the survey line is laid.
In one embodiment, in the size according to the exploration targets, it is determined that after exploration length, if above-mentioned survey
Chief inspector's degree is more than predetermined threshold value, in order to subsequently make full use of existing equipment to carry out electromagnetic survey, can be according to following step
It is rapid to perform：
S3-1：If the exploration length is more than the predetermined threshold value, by the half of the exploration length plus described
Length after the half of default surplus, as the length of the survey line；
In the present embodiment, if target is relatively large, when causing corresponding exploration length more long, and then cause original
Electromagnetic survey equipment can not meet demand.At this moment the first longer simultaneous shot field source, longer second can be selected synchronously
Exciting field source and longer survey line carries out above-mentioned electromagnetic survey, can equally realize corresponding exploration, analysis to exploration targets.
But so process, exploration cost will certainly be increased, while the longer exploring equipment of length is also not readily available, actually used scope
Also it is very limited.Therefore, segmentation electromagnetic survey can also be carried out to exploration targets according to exploration length using rollably mode here.
During specific implementation, when exploration length is more than predetermined threshold value, i.e., when more than 10 km, the half of length can will be explored plus default
The half of surplus is used as survey line length.Fig. 4 can specifically be referred to.It is actual when implementing, survey line length, the first simultaneous shot field source
The length of length and the second simultaneous shot field source is all that the half for exploring length adds the half for presetting surplus.So follow-up
In exploration process, can be using this group of exploring equipment elder generation Reconnaissance SurveySection, then Reconnaissance SurveySection.
S3-2：According to the length of the survey line, the survey line is laid.
Step 202：The first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency after control translation
The electromagnetic signal of rate.
Step 203：The acquisition station on survey line after control translation gathers electromagnetic data corresponding with the electromagnetic signal.
In the present embodiment, it is necessary to illustrate, with reference to the above method when electromagnetic survey is carried out to larger target, can
Translated 1 time with according to above-mentioned steps, exploration targets is divided 2 times carries out electromagnetic survey.It is of course also possible to as the case may be or
It is actually needed, translates 2 times, exploration targets is divided 3 times carries out electromagnetic survey.Similarly, n times can also be translated by that analogy, it is right
Exploration targets point carries out electromagnetic survey N+1 times.In this regard, the application is repeated no more.
A kind of electromagnetic survey device is additionally provided based on same inventive concept, in the embodiment of the present invention, such as following implementation
Example is described.Because the principle of device solve problem is similar to electromagnetic exploration method, therefore the implementation of electromagnetic survey device can be joined
See the implementation of electromagnetic exploration method, repeat part and repeat no more.Used below, term " unit " or " module " can be real
The combination of the software and/or hardware of existing predetermined function.Although the device described by following examples is preferably realized with software,
But hardware, or the realization of the combination of software and hardware is also that may and be contemplated.Fig. 3 is referred to, is that the application is implemented
A kind of composition knot figure of the electromagnetic survey device of example, the device can include：Transmitter module 301 and acquisition module 302, below it is right
The structure is specifically described.
Transmitter module 301, for controlling the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency
The electromagnetic signal of rate, wherein, the first simultaneous shot field source and the second simultaneous shot field source are symmetrical, and are set in parallel in
Survey line both sides, the survey line is moved towards perpendicular to the construction of exploration targets；
Acquisition module 302, for controlling the acquisition station on survey line to gather electromagnetic data corresponding with the electromagnetic signal.
In the present embodiment, the electromagnetic data can be any one in following combination：
The electric-field intensity in x-axis direction；
The electric-field intensity in x-axis direction and the magnetic field intensity in z-axis direction；
The magnetic field intensity of the electric-field intensity, the magnetic field intensity in z-axis direction and y-axis direction in x-axis direction；
The electric-field intensity in x-axis direction, the electric-field intensity in y-axis direction, the magnetic field intensity in z-axis direction, y-axis direction magnetic field it is strong
Degree and the magnetic field intensity in x-axis direction；
Wherein, the x-axis direction be parallel to ground and with the first simultaneous shot field source and it is described second it is synchronous swash
The parallel direction of hair field source, the y-axis direction be parallel to ground but with the first simultaneous shot field source and described second same
Step excites the vertical direction of field source, and the z-axis direction is perpendicular to the direction on ground.
In the present embodiment, it is necessary to what is illustrated is：The survey line includes a plurality of survey line, wherein, in a plurality of survey line
Each bar survey line be parallel to each other and equal length.The length of the first simultaneous shot field source, the second simultaneous shot field source
Length and the survey line equal length.Include multiple measuring points on the survey line, wherein, in the multiple measuring point adjacent two
Spacing distance between individual measuring point is 50 meters to 200 meters.And on each measuring point in multiple measuring points of the survey line respectively
It is provided with acquisition station.
In one embodiment, it is described in order to realize carrying out relatively large exploration targets rolling type electromagnetic exploration
Electromagnetic survey device can also include：
Translation module, for according to exploration length, translating the first simultaneous shot field source, second simultaneous shot
Source and the survey line.
In the present embodiment, by translation module, transmitter module 301 and acquisition module 302 are moved into predeterminated position
Afterwards, electromagnetic survey is carried out to exploration targets by transmitter module 301 and acquisition module 302.Controlled by transmitter module 301 flat
The electromagnetic signal of the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency after shifting；By gathering mould
The acquisition station on survey line after the control translation of block 302 gathers electromagnetic data corresponding with the electromagnetic signal.
In one embodiment, translation module by transmitter module 301 and acquisition module 302 in order to move to default position
Put, can specifically include：
Judging unit, for determining whether exploration length is more than predetermined threshold value, if greater than the predetermined threshold value, then translates
The first simultaneous shot field source, the second simultaneous shot field source and the survey line.
In the present embodiment, it is necessary to explanation, the survey line at least two before survey line and translation after the translation
Measuring point is overlapped.
In an application example, refering to Fig. 4.Electromagnetic exploration method/device that the embodiment of the present application can be applied to provide
Specific electromagnetic survey research is carried out to certain exploration targets.
The survey line 3 perpendicular to construction trend, i.e. Line-1, Line-2 and Line-3 in Fig. 4 are laid in exploration targets.
Wherein, the distance between every survey line length 12km, survey line Line-1, Line-2, Line-3 500m, it is therefore desirable to be divided to two to apply
Work order unit, first construction cell is laid：The north of the south of survey line Line-1 and Line-3 by western end lay 2 parallel to
The level of survey line excites field source A1 1B1 1、A2 1B2 1, excite the western end points of field source consistent with the most western measuring point abscissa of survey line, field source
A1 1B1 1And A2 1B2 1It is symmetrical with center survey line Line-2, field source A1 1B1 1And A2 1B2 1It is 6km, field source A1 1B1 1And A2 1B2 1With survey line
Line-2 distances are 7km, and simultaneous shot is simultaneously gathered.After the completion of excite with reception system integrally move eastwards, displacement with
Emission source length is identical, lays the field source A of the second construction cell1 2B1 2And A2 2B2 2, exciting between construction cell and construction cell
Field source shares field source earth point, i.e. A1 2With B1 1It is same earth point, A2 2With B2 1It is same earth point, the first construction cell
The linking measuring point Chong Die with the Hydrographic General Line between the second construction cell 3, simultaneous shot is simultaneously gathered.
It should be noted that above-mentioned reception survey grid density lays 3 parallel surveys line, measuring point spacing 100m, the line-spacing of survey line
500m, each measuring point lays an acquisition station, and acquisition station is single track measurement Ex.
Because exploration targets strike length is 12km, more than predetermined threshold value, it may be considered that carry out electricity by way of rolling
Magnetic is explored.During specific implementation, Fig. 4 can be referred to, lay 2 bilateral rolling hair field sources of synchronization, form 2 rolling construction cells,
A between per two neighboring construction cell1 2With B1 1Share an earth point, A2 2With B2 1An earth point is shared, 3 surveys line are being applied
Measuring point between work order unit will overlap 3 connecting points.
It should be noted that above-mentioned two simultaneous shot field source is respectively in 3 survey line both sides for two, it is parallel with survey line,
Level wire long excites field source length 6km.Described level of synchronization excites field source the first construction cell field source A1 1B1 1And A2 1B2 1It is flat
OK, two field sources with center survey line Line-2 apart from equal, the second construction cell field source A1 2B1 2And A2 2B2 2It is parallel, two field sources
With center survey line Line-2 apart from equal.Described level excites field source and survey line distance minimum 6.5km,
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.Especially for system reality
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
It should be noted that system, device, module or unit that above-mentioned implementation method is illustrated, specifically can be by computer
Chip or entity are realized, or are realized by the product with certain function.For convenience of description, in this manual, retouch
It is divided into various units with function when stating apparatus above to describe respectively.Certainly, can be the function of each unit when the application is implemented
Realized in same or multiple softwares and/or hardware.
Additionally, in this manual, adjective as such as first and second can be only used for an element or dynamic
Make to be made a distinction with another element or action, without requiring or implying any actual this relation or order.Permit in environment
Perhaps in the case of, in only element, part or step is should not be interpreted as limited to reference to element or part or step (s)
It is individual, and can be in element, part or step one or more etc..
As can be seen from the above description, the electromagnetic exploration method and device of the embodiment of the present application offer are compared to existing
There is method, first, by the symmetrical parallel laying identical simultaneous shot field source in the both sides of survey line, and two simultaneous shots of control
Field source synchronized transmissions frequency identical electromagnetic signal so that treat survey area maintaining uniform illumination, improve signal to noise ratio, reduce field source
Effect, asks so as to solve the exploration technology that result precision is poor, exploration efficiency is low present in existing electromagnetic exploration method
Topic, realizes the degree of accuracy for improving exploration result and the technique effect for improving exploration efficiency；Secondly, based on the above method, also carry
Go out by rolling the first simultaneous shot field source of translation, the second simultaneous shot field source and survey line, to larger range of exploration targets
Electromagnetic survey is carried out, it is cost-effective so as to efficiently utilize existing electromagnetic survey equipment, improve exploration efficiency；In addition,
When rolling prospecting is carried out, by the survey line after controlling translation and at least overlap two measuring points of survey line before translation so that translation
Exploration electromagnetic data afterwards can well be connected with the exploration electromagnetic data before translation, it is ensured that the system of gathered data before and after rolling
One property, so as to further improve the degree of accuracy of exploration result.
Although this application provides the method operating procedure as described in embodiment or flow chart, based on conventional or noninvasive
The means of the property made can include more or less operating procedures.The step of being enumerated in embodiment order is only numerous steps
A kind of mode in execution sequence, unique execution sequence is not represented.When device or client production in practice is performed, can
Performed or executed in parallel (such as at parallel processor or multithreading with according to embodiment or method shown in the drawings order
The environment of reason, even distributed data processing environment).Term " including ", "comprising" or its any other variant be intended to contain
Lid nonexcludability is included, so that process, method, product or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, product or equipment
Intrinsic key element.In the absence of more restrictions, be not precluded from the process including the key element, method, product or
Also there are other identical or equivalent elements in person's equipment.
Device that above-described embodiment is illustrated or module etc., can specifically be realized by computer chip or entity, or by having
There is the product of certain function to realize.For convenience of description, it is divided into various modules with function during description apparatus above to retouch respectively
State.Certainly, the function of each module can be realized in same or multiple softwares and/or hardware when the application is implemented,
Can will realize that the module of same function is realized by the combination of multiple submodule.Device embodiment described above is only
Schematically, for example, the division of the module, only a kind of division of logic function, can there is other drawing when actually realizing
The mode of dividing, such as multiple module or components can be combined or be desirably integrated into another system, or some features can be ignored,
Or do not perform.
It is also known in the art that in addition to realizing controller in pure computer readable program code mode, it is complete
Entirely can by by method and step carry out programming in logic come cause controller with gate, switch, application specific integrated circuit, may be programmed
Logic controller realizes identical function with the form of embedded microcontroller etc..Therefore this controller is considered one kind
Hardware component, and the device for realizing various functions included to its inside can also be considered as the structure in hardware component.Or
Person even, can be used to realizing that the device of various functions is considered as not only being the software module of implementation method but also can be hardware
Structure in part.
The application can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizes routine, program, object, the group of particular abstract data type
Part, data structure, class etc..The application can also be in a distributed computing environment put into practice, in these DCEs,
Task is performed by the remote processing devices connected by communication network.In a distributed computing environment, program module can
With in the local and remote computer-readable storage medium including including storage device.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
Realized by the mode of software plus required general hardware platform.Based on such understanding, the technical scheme essence of the application
On the part that is contributed to prior art in other words can be embodied in the form of software product, the computer software product
Can store in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are used to so that a computer equipment
(can be personal computer, mobile terminal, server, or network equipment etc.) performs each embodiment of the application or implementation
Method described in some parts of example.
Each embodiment in this specification is described by the way of progressive, same or analogous portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.The application can be used for crowd
In more general or special purpose computing system environments or configuration.For example：Personal computer, server computer, handheld device or
Portable set, laptop device, multicomputer system, the system based on microprocessor, set top box, programmable electronics set
Standby, network PC, minicom, mainframe computer, the DCE including any of the above system or equipment etc..
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have it is many deformation and
Change is without deviating from spirit herein, it is desirable to which appended claim includes these deformations and changes without deviating from the application.
Claims (13)
1. a kind of electromagnetic exploration method, it is characterised in that including：
The electromagnetic signal of the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency is controlled, wherein, institute
State the first simultaneous shot field source and the second simultaneous shot field source symmetrically and be set in parallel in survey line both sides, the survey line is vertical
Moved towards in the construction of exploration targets；
Acquisition station on control survey line gathers electromagnetic data corresponding with the electromagnetic signal.
2. method according to claim 1, it is characterised in that the survey line includes a plurality of survey line, wherein, a plurality of survey
Each bar survey line in line is parallel to each other and equal length.
3. method according to claim 1, it is characterised in that the length of the first simultaneous shot field source, described second
The equal length of the length of simultaneous shot field source and the survey line.
4. method according to claim 1, it is characterised in that include multiple measuring points on the survey line, wherein, it is the multiple
The spacing distance between two neighboring measuring point in measuring point is 50 meters to 200 meters.
5. method according to claim 4, it is characterised in that on each measuring point in multiple measuring points of the survey line point
Acquisition station is not provided with it.
6. method according to claim 1, it is characterised in that acquisition station collection and electromagnetism letter on control survey line
After number corresponding electromagnetic data, methods described also includes：
Translate the first simultaneous shot field source, the second simultaneous shot field source and the survey line；
The electromagnetic signal of the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency after control translation；
The acquisition station on survey line after control translation gathers electromagnetic data corresponding with the electromagnetic signal.
7. method according to claim 6, it is characterised in that translation the first simultaneous shot field source, described second same
Step excites field source and the survey line, including：
It is determined that whether exploration length is more than predetermined threshold value；
If greater than the predetermined threshold value, then the first simultaneous shot field source, the second simultaneous shot field source and institute are translated
State survey line.
8. method according to claim 6, it is characterised in that the survey line before survey line after the translation and translation is at least
Two measuring points are overlapped.
9. method according to claim 1, it is characterised in that in control the first simultaneous shot field source and the second simultaneous shot
Before the electromagnetic signal of field source synchronized transmissions same frequency, methods described also includes：
According to the size of the exploration targets, it is determined that exploration length；
If the exploration length is less than or equal to predetermined threshold value, the exploration length is added into the length after default surplus, made
It is the length of the survey line；
According to the length of the survey line, the survey line is laid.
10. method according to claim 9, it is characterised in that in the size according to the exploration targets, it is determined that exploration length
After degree, methods described also includes：
If the exploration length is more than the predetermined threshold value, by the half of the exploration length plus the default surplus
Length after half, as the length of the survey line；
According to the length of the survey line, the survey line is laid.
11. methods according to claim 1, it is characterised in that the electromagnetic data is any one in following combination：
The electric-field intensity in x-axis direction；
The electric-field intensity in x-axis direction and the magnetic field intensity in z-axis direction；
The magnetic field intensity of the electric-field intensity, the magnetic field intensity in z-axis direction and y-axis direction in x-axis direction；
The electric-field intensity in x-axis direction, the electric-field intensity in y-axis direction, the magnetic field intensity in z-axis direction, the magnetic field intensity in y-axis direction and
The magnetic field intensity in x-axis direction；
Wherein, the x-axis direction be parallel to ground and with the first simultaneous shot field source and second simultaneous shot
The parallel direction in source, the y-axis direction be parallel to ground but with the first simultaneous shot field source and it is described second it is synchronous swash
The vertical direction of hair field source, the z-axis direction is perpendicular to the direction on ground.
A kind of 12. electromagnetic survey devices, it is characterised in that including：
Transmitter module, the electromagnetism for controlling the first simultaneous shot field source and the second simultaneous shot field source synchronized transmissions same frequency
Signal, wherein, the first simultaneous shot field source and the second simultaneous shot field source are symmetrical, and are set in parallel in survey line two
Side, the survey line is moved towards perpendicular to the construction of exploration targets；
Acquisition module, for controlling the acquisition station on survey line to gather electromagnetic data corresponding with the electromagnetic signal.
13. devices according to claim 12, it is characterised in that described device also includes：
Translation module, for according to exploration length, translate the first simultaneous shot field source, the second simultaneous shot field source and
The survey line.
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