CN109001816A - A kind of sharp electric surface sweeping method that multipair supply terminals is powered simultaneously - Google Patents
A kind of sharp electric surface sweeping method that multipair supply terminals is powered simultaneously Download PDFInfo
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- CN109001816A CN109001816A CN201810571289.0A CN201810571289A CN109001816A CN 109001816 A CN109001816 A CN 109001816A CN 201810571289 A CN201810571289 A CN 201810571289A CN 109001816 A CN109001816 A CN 109001816A
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- supply terminals
- multipair
- measuring point
- surface sweeping
- supply
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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
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
Abstract
The present invention provides a kind of sharp electric surface sweeping method of multipair supply terminals while power supply.This method is powered using electrical method transmitter by the multipair supply terminals of different location simultaneously, the electrical potential information for surveying area's different location measuring point and sharp power information are obtained using electrical method receiver, the normalized device coefficient and resistivity calculation formula powered simultaneously by multipair supply terminals, the resistivity data for obtaining different location measuring point realizes the sharp electric surface sweeping work of multipair supply terminals while power supply.This method helps to expand the horizontal and vertical range of horizontal component of electric field, improves signal strength, the sharp electric surface sweeping range of expansion, the isolated influence for reducing power supply source, increases the geological information amount under measurement point acquisition measuring point to realize the purpose of raising swashs electric surface sweeping effect, raising surface sweeping working efficiency.
Description
Technical field
The present invention relates to a kind of sharp electric surface sweeping methods in electrical prospecting.
Background technique
The most commonly used is the surface sweeping sides of the central gradient array using a pair of of supply terminals power supply in swashing electric surface sweeping work at present
Formula.Within the scope of survey line using intermediate 1/3AB length of the central gradient array of a pair of of supply terminals power supply between supply terminals AB,
Current field is close to horizontal component of electric field in the 1/5AB length range of cross line direction, thus be conducive to it is right in the measurement range
Exploration targets body is analyzed and is studied, and exploration effects and efficiency are improved.
Although having clear improvement and mentioning in the central gradient array exploration efficiency and effect using the power supply of a pair of of supply terminals
Height, but within the scope of its survey line for being limited to the intermediate 1/3AB length between supply terminals AB, in the 1/5AB long of cross line direction
It carries out the work in degree range, for surface sweeping work, does not play maximum effect completely, and due to a pair of of power supply of every development
After the surface sweeping work of point, need to rearrange another pair supply terminals as power supply source, so as to cause needing to supply terminals and electrical method
Emission system is repeatedly moved, and after replacing supply terminals position, in the data that measure every time comprising below different power supply sources and
Resistivity and sharp power information between power supply source and measuring point, so that the resistivity of power supply source and sharp power information are for surface sweeping result shadow
Sound is larger, and being worthy of consideration reduces the influence degree of power supply source, further increases surface sweeping effect.
Separately due to by the way of a pair of of supply terminals power supply, although the horizontal component of electric field range between two electrodes is expanded
Greatly, but once main profile is left, electric field strength decline is very fast, and horizontal component of electric field quickly becomes curved surface electric field, this is also IP intermediate gradient
Surface sweeping specification, which is limited in the 1/5AB length range of cross line direction, carries out other the main reason for surveying.Therefore be worth conducting a research,
The other of further expansion surface sweeping work surveys range, improves surface sweeping working efficiency.
Generally generator is used to provide electric energy for power supply in IP intermediate gradient surface sweeping work, due to the grounding requirement of supply terminals
It is limited with factors such as the screen effects of electric current, causes the electric current difficulty for increasing each supply terminals input the earth larger；If same
A position increases number of electrodes, then due to the screen effect of electric current, it is also difficult to excavate the power supply potential of generator.Therefore it is necessary to right
Currently used conventional electron mode improves, and increases supply current, obtains the higher electrical method data of signal-to-noise ratio, and raising is surveyed
Visit effect and efficiency.
The above problem based on the prior art, the present invention propose the sharp electric surface sweeping side of a kind of multipair supply terminals while power supply
Method improves surface sweeping effect and efficiency to carry out solution or improvement to a certain extent to the above problem.
Summary of the invention:
The sharp electric surface sweeping method that a kind of multipair supply terminals proposed by the invention is powered simultaneously, it is characterised in that: by
The arrangement supply terminals of two extending directions of the different surveys line other than resistivity surface sweeping coverage of survey area, two of every a pair of supply terminals
Supply terminals is arranged in not ipsilateral other than the measuring point range for surveying area；The wherein power supply of certain side arrangement other than coverage of survey area
Points are equal to the power supply points of other side arrangement；The position of each supply terminals arrangement is different；Using electrical method transmitter to multipair confession
The current signal direction that electricity point while all supply terminals powered, and survey area the same side are supplied is identical, surveys the not ipsilateral power supply in area
The supplied current signal of point is contrary, and records the current value that each supply terminals passes through；It is received using electrical method receiver and surveys area
Potential difference and sharp power information on interior measuring point, the normalized device system of the measuring point of corresponding position when being powered simultaneously with multipair supply terminals
Several and resistivity calculation formula seeks the resistivity information of the measuring point of corresponding position；The measuring electrode of mobile measuring point is to other measuring points
Position, and carry out the multipair supply terminals of other measuring points while the resistivity of power supply and swashing electric data acquisition, until completing all surveys
The resistivity of point and swash electric data, thus when obtaining multipair supply terminals while powering the resistivity of all measuring points and swash electricity surface sweeping at
Fruit.
Electrical method transmitter in this method can select more electrical method transmitters, and an electrical method transmitter also can be selected；Choosing
When being powered simultaneously with more electrical method transmitters, every electrical method transmitter is to some supply terminals of the side other than coverage of survey area and survey
Some supply terminals of the other side other than area's range is powered, and supply terminals at least one confession that every electrical method transmitter is connected
The position of electricity point is different from the supply terminals position that other electrical method transmitters are connected；Behaviour is synchronized to all electrical method transmitters
Make, and record the current value that every electrical method transmitter is exported, and all supply terminals in the same side other than coverage of survey area and survey area
The current signal that all supply terminals in the other side other than range pass through is reversed；Select an electrical method transmitter same to all supply terminals
When powering, all supply terminals of all supply terminals and the other side to the side other than coverage of survey area are powered simultaneously, wherein surveying
The electric current that all supply terminals of certain side other than area's range and all supply terminals of the other side other than coverage of survey area pass through is believed
It is number reversed, the current value that each supply terminals passes through is measured and recorded.
I-th of supply terminals A when electrical method transmitter in this method powers simultaneously to multipair supply terminalsiWith measuring point M and N
Normalized device COEFFICIENT KiIt is worth calculation formula are as follows:Wherein AiM is i-th of confession
Electric point AiThe distance between measuring point M, unit is rice；AiN is i-th of supply terminals AiThe distance between measuring point N, unit is rice；
I is positive integer greater than 1, and its maximum number is equal to used power supply when powering simultaneously and counts X；The survey of electrical method receiver measurement
Potential difference U on point M and NMNBe converted to the calculation formula of resistivity are as follows:Wherein ρMNFor measuring point M and N
Between resistivity；UMNFor the potential difference between measuring point M and N, unit is millivolt；IiFor the current value that i-th of supply terminals passes through,
Unit is milliampere；KiFor i-th of supply terminals AiWith the normalized device coefficient of measuring point M and N, unit is rice；I is just whole greater than 1
Number, and its maximum number is equal to simultaneously that used power supply is counted X when powering.
Spacing in adjacent two pairs of supply terminals of multipair supply terminals in this method between each pair of supply terminals line is not more than
Arrange the spacing of any pair of supply terminals on the survey line of adjacent two pairs of supply terminals.If A1And A2For a pair of of supply terminals, A3And A4For
Adjacent another pair supply terminals, then A1A2Supply terminals line and A3A4The distance between supply terminals line D1No more than A1A2Supply terminals
Distance L1And A3A4Supply terminals distance L2In shortest distance value.
Method proposed by the invention is suitble to survey area periphery landform preferable, is suitble to be arranged symmetrically the sharp electricity of multipair a supply terminals
Surface sweeping work.This method is relatively specific for the relatively simple survey area in lineament direction and carries out the work.
Using sharp electric surface sweeping method proposed by the present invention, there are following several clear advantages: 1, since supply terminals disperses cloth
It sets, reduces the shielding action between supply terminals, power supply current value can be improved as far as possible, so that the potential difference improved on measuring point is strong
Degree improves the ability for swashing the compacting electromagnetic interference of electric surface sweeping work, increases signal-to-noise ratio, improve exploration effects and efficiency；2, area is surveyed
Interior horizontal component of electric field range is wider, can expand the horizontal and vertical surface sweeping range surveyed in area, it can control more surveys line
And measuring point, it improves the resistivity between different surveys line and different measuring points and swashs electric data comparison effect, help to improve exploration effect
Fruit also improves exploration efficiency simultaneously because range expansion can be surveyed；3, due to there is the field source of multipair supply terminals on each measuring point
It influences, it is possible to reduce isolated influence of the single field source on the resistivity of measuring point and sharp electric data, to improve the resistivity of acquisition
The resistivity of measuring point lower part is more directly reacted with sharp electric data and swashs the ability of electric distribution characteristics, improves exploration effects；If 4,
It is powered using a set of electrical method transmitter, although increasing number of conductors arrangement, reduces entire electrical method and send system
Number is moved, for complicated landform, improves the adaptability of surface sweeping work, can also improve the efficiency of entire surface sweeping work.
Detailed description of the invention:
Fig. 1 for the mentioned method of the present invention field arrangement schematic diagram；
Potential analogue result figure (wherein 6 supply terminals that Fig. 2 powers simultaneously for 6 supply terminals of the mentioned method of the present invention
By current absolute value it is identical, A1、A3And A5The current direction and A that supply terminals passes through2、A4And A6The electric current side that supply terminals passes through
To on the contrary, the isopleth in figure is current potential isopleth)；
Fig. 3 is Potential analogue result figure (the wherein A that 2 conventional supply terminals are powered simultaneously1、A2The electric current that supply terminals passes through
Absolute value is identical, and current direction is on the contrary, the isopleth in figure is current potential isopleth)；
A in figure1、A2、A3、A4、A5、A6The supply terminals of different location is represented, B is electrical method transmitter, and C is electrical method receiver, D
For conducting wire, M and N are measuring point.
Specific embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3 combination specific embodiment, the present invention will be further described.
Assuming that survey area as shown in Figure 1, which will carry out, swashs electric surface sweeping work, survey area arranges 9 surveys line altogether, and (survey line number is respectively
0,4,8,12,16,20,24,28,32 line), 11 measuring points of every survey line (measuring point number on every survey line is 0,2,4,6,8,10,
12,14,16,18, No. 20), each measuring point number includes survey line number and measuring point number, i.e. measuring point numbers the mode (X for using X-Y
For survey line number, Y is measuring point number), if No. 0 measuring point number on No. 0 survey line is No. 0-0, other and so on.
Survey area shown in FIG. 1 is opened according to the sharp electric surface sweeping method that a kind of multipair supply terminals proposed by the present invention is powered simultaneously
The sharp electric surface sweeping work of the mentioned method of the exhibition present invention, it is assumed that this swashs electric surface sweeping work and selects 3 pairs of supply terminals to carry out while powering,
Then select the arrangement survey line of 4 lines, 16 lines and 28 lines as supply terminals.A pair of of supply terminals of 4 lines is arranged in No. 0 end of 4 lines
Other than point and No. 20 endpoints, it is assumed that first supply terminals A of a pair of of supply terminals of 4 lines1- No. 6 point positions of 4 lines are arranged in,
Second supply terminals A2It is arranged in No. 26 point positions of 4 lines.A pair of of supply terminals of 16 lines is arranged in No. 0 endpoint of 16 lines
Other than No. 20 endpoints, it is assumed that first supply terminals A of a pair of of supply terminals of 16 lines3- No. 6 point positions of 16 lines are arranged in,
Second supply terminals A4It is arranged in No. 26 point positions of 16 lines.A pair of of supply terminals of 28 lines is arranged in No. 0 end of 28 lines
Other than point and No. 20 endpoints, it is assumed that first supply terminals A of a pair of of supply terminals of 28 lines5It is arranged in-No. 6 measuring point positions of 28 lines
It sets, second supply terminals A6It is arranged in No. 26 point positions of 28 lines.In order to guarantee the electric field entirely surveyed in area close to water as far as possible
Ordinary telegram field sets the shortest length of no more than the adjacent two power supply line lengths of spacing distance of 3 supply lines, according to the above cloth
The distance between adjacent two supply lines for setting 4 lines, 16 lines and 28 lines are 12 times of measuring point units, a pair of of supply terminals of 4 lines
The distance between be 32 times of measuring point units, the distance between a pair of of supply terminals of 16 lines be 32 times of measuring point units, 28 lines
The distance between a pair of of supply terminals is 32 times of measuring point units, that is, the spacing distance for meeting adjacent two supply lines is less than any confession
The requirement of the distance of a pair of of supply terminals on electric wire.
It is assumed that this uses signal of electrical method transmitter B output for direct current signal, using conducting wire the supply terminals on 4 lines
A1, supply terminals A on 16 lines3, supply terminals A on 28 lines5It is connected with the anode of electrical method transmitter B, using conducting wire on 4 lines
Supply terminals A2, supply terminals A on 16 lines4, supply terminals A on 28 lines6It is connected with the cathode of electrical method transmitter B.Electrical method transmitter B
Pass through 6 supply terminals A1、A2、A3、A4、A5、A6It powers simultaneously, and records 6 supply terminals A respectively1、A2、A3、A4、A5、A6Each of
The current value I that supply terminals is supplied1、I2、I3、I4、I5、I6。
It selects two measuring points M and N on certain survey line to arrange measuring electrode (18 and No. 20 measuring points of such as 0 line), is connect using electrical method
Receipts machine C, and measure the potential difference U on two measuring points M and NMNWith sharp electric data；Using formula
Calculate separately 6 supply terminals (A1、A2、A3、A4、A5、A6) with the normalized device COEFFICIENT K of measuring point M and Ni, the wherein π in formula
For pi；AiM is i-th of supply terminals AiThe distance between measuring point M, unit is rice；AiN is i-th of supply terminals AiWith measuring point
The distance between N, unit are rice；I is positive integer greater than 1, and when its maximum number is equal to while powering used supply terminals
Number 6.
Formula is used againResistivity data acquired on measuring point M and N is calculated, wherein ρMNFor
Resistivity between measuring point M and N；UMNFor the potential difference between measuring point M and N, unit is millivolt；IiPass through for i-th of supply terminals
Current value, unit is milliampere；KiFor i-th of supply terminals AiWith the normalized device coefficient of measuring point M and N, unit is rice.
Electrical method receiver C is all made of to other measuring points surveyed in area and measures corresponding potential difference UMNWith sharp electric data, and adopt
With the normalized device COEFFICIENT K of corresponding measuring pointiAnd electricalresistivityρMNCalculation formula, seek the electrical resistivity results of all measuring points, from
And it gets the resistivity of the entire all measuring points surveyed in area and swashs electricity as a result, completing the sharp electric surface sweeping of method proposed by the present invention
Work.
2 of the Potential analogue result figure and Fig. 3 routine powered simultaneously from 6 supply terminals of the mentioned method of Fig. 2 present invention
The Potential analogue result figure comparison that supply terminals is powered simultaneously is it can be found that the horizontal electricity of the Potential analogue result of the mentioned method of the present invention
Field feature is substantially better than the result of Fig. 3: as the horizontal component of electric field vertical and horizontal range of Fig. 2 is significantly greater than Fig. 3；The current potential mould of Fig. 2
Intend result relative to the result of Fig. 3 closer to horizontal component of electric field, to be more advantageous to the development and exploration effects of surface sweeping work.From figure
The comparing result of 2 and Fig. 3 is seen, if powered simultaneously using than the 3 pairs more supply terminals of supply terminals, such as 4 pairs or more to power supply
It puts while powering, then the feature of horizontal component of electric field will be apparent from, and the range of horizontal component of electric field is also wider, will more preferably be explored
Effect also can more improve exploration efficiency.
Using sharp electric surface sweeping method proposed by the present invention, there are following several clear advantages: 1, since supply terminals disperses cloth
It sets, reduces the shielding action between supply terminals, power supply current value can be improved as far as possible, so that the potential difference improved on measuring point is strong
Degree improves the ability for swashing the compacting electromagnetic interference of electric surface sweeping work, increases signal-to-noise ratio, improve exploration effects and efficiency；2, area is surveyed
Interior horizontal component of electric field range is wider, can expand the horizontal and vertical surface sweeping range surveyed in area, it can control more surveys line
And measuring point, it improves the resistivity between different surveys line and different measuring points and swashs electric data comparison condition, help to improve exploration effect
Fruit also improves exploration efficiency simultaneously because range expansion can be surveyed；3, due to there is 6 supply terminals (if increasing on each measuring point
Power supply points, then have more supply terminals) field source influence, it is possible to reduce single field source is to the resistivity of measuring point and swashs electric data
It is isolated to influence, it more directly reacts the resistivity of measuring point lower part to improve the resistivity of acquisition and swash electricity data and swashs electricity distribution spy
The ability of sign improves exploration effects；4, due to being powered using a set of electrical method transmitter, although increasing number of conductors cloth
It sets, but reduces the resettlement number that entire electrical method sends system, for complicated landform, improve the adaptation of surface sweeping work
Property, it can also improve the efficiency of entire surface sweeping work.
Claims (4)
1. a kind of sharp electric surface sweeping method that multipair supply terminals is powered simultaneously, it is characterised in that: by swashing electric surface sweeping coverage of survey area
A pair of of supply terminals, two supply terminals difference of every a pair of supply terminals are respectively arranged on two extending directions of different surveys line in addition
It is arranged in not ipsilateral other than the measuring point range for surveying area；Wherein the power supply points of certain side arrangement other than coverage of survey area are equal to phase
To the power supply points of side arrangement；The position of each supply terminals arrangement is different；Using electrical method transmitter to multipair supply terminals simultaneously
Power supply, and the current signal direction that all supply terminals for surveying area the same side are supplied is identical, surveys what the not ipsilateral supply terminals in area was supplied
Current signal is contrary, and records the current value I that each supply terminals passes throughi；It is received using electrical method receiver and surveys measuring point in area
On potential difference UMNWith sharp power information, i-th of supply terminals A when being powered simultaneously with multipair supply terminalsiWith the normalization of measuring point M and N
Electrode coefficient formulaCalculate the electrode coefficient K of corresponding measuring pointi, wherein AiM is
I supply terminals AiThe distance between measuring point M, unit is rice；AiN is i-th of supply terminals AiThe distance between measuring point N, unit
For rice；I is positive integer greater than 1, and when its maximum number is equal to while powering used supply terminals total number X；Using multipair confession
The resistivity calculation formula of corresponding position measuring point when electricity is put while poweringSeek the resistance of corresponding measuring point
Rate information；Wherein ρMNFor the resistivity between measuring point M and N；UMNFor the potential difference between measuring point M and N, unit is millivolt；IiFor
The current value that i-th of supply terminals passes through, unit are milliampere；KiFor i-th of supply terminals AiWith the normalized device system of measuring point M and N
Number, unit is rice；Supply terminals sum when X is while powering；I is the positive integer greater than 1, and its maximum number is equal to while powering
When used power supply count X；The measuring electrode of mobile measuring point M and N carry out the multipair of other measuring points to other point positions
The resistivity and swash electric data acquisition that supply terminals is powered simultaneously, until complete the resistivity of all measuring points and swash electric data, thus
The resistivity of all measuring points and sharp electric surface sweeping achievement when obtaining multipair supply terminals while powering.
2. the sharp electric surface sweeping method that a kind of multipair supply terminals as described in claim 1 is powered simultaneously, characterized in that electrical method is sent
Machine can select more electrical method transmitters, and an electrical method transmitter also can be selected；When selecting more electrical method transmitters while powering,
Some confession of every electrical method transmitter to the other side other than some supply terminals and coverage of survey area of the side other than coverage of survey area
Electricity point power supply, and the position of supply terminals at least one supply terminals that is connected of every electrical method transmitter and other electrical method transmitters
The supply terminals position connected is different；Operation is synchronized to all electrical method transmitters, and it is defeated to record every electrical method transmitter institute
The current value of each supply terminals is arrived out, and the other side other than all supply terminals in the same side other than coverage of survey area and coverage of survey area
The current signal that all supply terminals pass through is reversed；Select an electrical method transmitter to all supply terminals while when powering, to survey area
All supply terminals of side other than range and all supply terminals of the other side are powered simultaneously, wherein a certain other than coverage of survey area
All supply terminals of side and the current signal that all supply terminals of the other side other than coverage of survey area pass through are reversed, to each power supply
The current value that point passes through is measured and is recorded.
3. the sharp electric surface sweeping method that a kind of multipair supply terminals as described in claim 1 is powered simultaneously, characterized in that multipair power supply
Spacing in adjacent two pairs of supply terminals of point between each pair of supply terminals line is any in adjacent two pairs of supply terminals no more than arranging
To the spacing of supply terminals.
4. the sharp electric surface sweeping method that a kind of multipair supply terminals as described in claim 1 is powered simultaneously, characterized in that preferably multipair
Supply terminals is no less than 2 pairs of supply terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810571289.0A CN109001816A (en) | 2018-06-06 | 2018-06-06 | A kind of sharp electric surface sweeping method that multipair supply terminals is powered simultaneously |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810571289.0A CN109001816A (en) | 2018-06-06 | 2018-06-06 | A kind of sharp electric surface sweeping method that multipair supply terminals is powered simultaneously |
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| CN103645514A (en) * | 2013-12-25 | 2014-03-19 | 山东大学 | Underground engineering advanced detection method and system for resistivity of multi-same-source electrode array |
| JP2015127701A (en) * | 2013-11-29 | 2015-07-09 | 紘彬 吉田 | Electric survey method |
| CN106125143A (en) * | 2016-08-11 | 2016-11-16 | 中国科学院地球化学研究所 | DC fields fixed power supply exploitation method |
| CN107748395A (en) * | 2017-10-19 | 2018-03-02 | 中南大学 | A kind of multifrequency electric resistivity exploration method |
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2018
- 2018-06-06 CN CN201810571289.0A patent/CN109001816A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706585A (en) * | 2009-10-28 | 2010-05-12 | 中南大学 | Method for electrically forecasting danger in underground tunneling engineering |
| JP2015127701A (en) * | 2013-11-29 | 2015-07-09 | 紘彬 吉田 | Electric survey method |
| CN103645514A (en) * | 2013-12-25 | 2014-03-19 | 山东大学 | Underground engineering advanced detection method and system for resistivity of multi-same-source electrode array |
| CN106125143A (en) * | 2016-08-11 | 2016-11-16 | 中国科学院地球化学研究所 | DC fields fixed power supply exploitation method |
| CN107748395A (en) * | 2017-10-19 | 2018-03-02 | 中南大学 | A kind of multifrequency electric resistivity exploration method |
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