CN103267980A - Geophysical prospecting method and measuring device for earth electromagnetic field source correction - Google Patents
Geophysical prospecting method and measuring device for earth electromagnetic field source correction Download PDFInfo
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- CN103267980A CN103267980A CN2013102053189A CN201310205318A CN103267980A CN 103267980 A CN103267980 A CN 103267980A CN 2013102053189 A CN2013102053189 A CN 2013102053189A CN 201310205318 A CN201310205318 A CN 201310205318A CN 103267980 A CN103267980 A CN 103267980A
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Abstract
The invention discloses a geophysical prospecting method and a measuring device for earth electromagnetic field source correction. Based on field source data which is measured automatically at regular time, a measurement numerical value of a geophysical meter running point of the moment is corrected from time to time. By means of correction of instability of the magneto-telluric field source, interference of the itself field source of the magneto-telluric field source on an instrument is eliminated, accurate data are obtained, drawing comparison is conducted by means of the obtained data, so that the condition of an underground geological anomalous body is accurately and truly reflected, and the problems that the accuracy and the stability of the measured data generated by the interference are poor is solved.
Description
Technical field
The present invention relates to relate to the geophysical Detection Techniques of International Classification of Patents G01V, especially the geophysical prospecting method of earth electromagnetic field field source correction and measurement mechanism.
Background technology
Geophysical detection is a kind of method and the theory that the applied physics principle is reconnoitred underground mineral, geologize structure.Be called for short physical prospecting.It has utilization more widely at aspects such as engineering construction and environmental protection.The physical property that the rock ore body that underground tax is deposited or tectonic structure have based on them, scale and residing position have corresponding physical phenomenon to be reflected near the face of land or the face of land, and this physical phenomenon is the part of the whole physical phenomenon of the earth.The working contents of geophysical survey is to utilize the geological instrument that adapts to measure, receive the information of the various physical phenomenons of perform region, use the information that effective disposal route therefrom extracts to be needed, and according to the physical difference of rock ore body or structure and country rock, analyze in conjunction with geologic condition, make geologic interpretation, infer detected object in position, magnitude range and occurrence that underground tax is deposited, and the physical quantity etc. that reflects corresponding physical property characteristic, the map that corresponding explanation is inferred made.Geographical physical prospecting is that geologic examination and geology are studied indispensable a kind of means and method.
Near the information of the various physical phenomenons that various geophysical methods are measured the face of land or the face of land can be referred to as the information of geophysical field.Geophysical field can be divided into naturally occurring geophysical field and artificial excitation's geophysical field.The gravity field of the earth, terrestrial magnetic field, earth electric field, ground temperature field, nuclear physics field are naturally occurring geophysical fields; Produce electromagnetic field that elastic wave goes out in the internal field of underground generation, to underground emission electromagnetic wave excites at the elasticity wave field of underground propagation, to underground power supply etc. by secondary reflection, belong to the artificial geophysical field that excites.Geophysical field also can be divided into normal field and anomalous field.
A large amount of resistivity prospecting quasi-instruments that use in geophysical survey, field source uses made field source and nagneto-telluric field etc. as field source, made field source is too heavy, using in real process is not to make things convenient for especially, the null gravity of mt field source own is very convenient in actual use quick, but because nagneto-telluric field can be shined upon, as the distant place lightening activity, earth rotation, all multifactor influences such as geologic media, it is a field source that changes at any time, unstable field source causes very large influence to geophysical measurement, solve the advantage of itself null gravity of stable recycling of mt field source, energetically great practical value.
The publication document as:
201,210,257,373 1 kinds of geophysical survey data acquisition stations of Chinese patent application comprise the analog to digital conversion unit of interconnective front end and the processing unit of rear end; The analog to digital conversion unit is made up of variable gain amplifier and analog to digital converter; Processing unit is made up of field programmable gate array and the data transmission interface chip that is connected on the field programmable gate array.
Chinese patent application 201080033191 is for detection of the method and system that approaches of conduction, embedded structure, by electric current is put in the structure by the soil conduction, improves detectability and accuracy as the underground structure of pipeline, pipe etc.Detect the electromagnetic field of emission thus by removable detecting unit on the ground.According to this electromagnetic field, detecting unit can be determined approaching of structure and issue caution signal.The operator of this caution signal help earthmoving equipment avoids the collision with structure.
Summary of the invention
The geophysical prospecting method and the measurement mechanism that the purpose of this invention is to provide the correction of earth electromagnetic field field source, the numerical value of revising field source obtains measurement data accurately with the variation that adapts to the natural electric field field source.
The objective of the invention is to realize by following technical measures: the high-precision identical time service of correction instrument and physical prospecting instrument configuration high accuracy clock and GPS, correction instrument is measured automatically according to setting-up time, and the physical prospecting instrument runs the some not timing and measures; What correction instrument was measured is the variation of field source itself, the measured field source of physical prospecting instrument is subjected to the variation that forms after the influence of plastid differently, because field source is unsettled, so the field source correction is carried out in the variation of measured data based field source, modification method is when measured:
A) data of the correction instrument after utilizing denoising level and smooth are as the raw data A that corrects;
B) learnt from else's experience that to make the value that arithmetic on average obtains be T, then T0=A for the data of above-mentioned a) step process;
C) according to the Measuring Time of physical prospecting instrument one point data, find the data T1 of identical time correction instrument;
D) value that obtains of T1-T0 is the corrected value T3 of one point data, and T3 can just can bear, that is: T1-T0=T3, and one point data T4 adds the value T5 after T3 is diurnal correction, that is: T4+T3=T5; T5 need be shown as row separately at one point data, and the one point data file need show the value after original value and the correction.
The invention has the beneficial effects as follows: with the field source data that self-timing is measured a numerical value correction is measured in the physical prospecting instrument race point not timing in this moment, by revising the instability of nagneto-telluric field field source, thereby the field source of elimination nagneto-telluric field own obtains accurate data to the interference of instrument, with the contrast of drawing of these data, be exactly the situation of having reacted the subsurface geology anomalous body more accurately, really, thereby solve the consequent problem that data exist poor accuracy and poor stability of surveying.
Description of drawings
Fig. 1 is for revising the measuring principle synoptic diagram among the present invention
Fig. 2 is for revising measurement mechanism structural principle synoptic diagram among the present invention
Reference numeral comprises: physical prospecting instrument 1, electrode bar 2, the earth 3, correction instrument 4.
Embodiment
The present invention is according to the characteristic that changes at any time of mt field source, use a correction instrument 4 observe the mt field source with the time situation of change, record its field source Changing Pattern, re-use other physical prospecting instrument 1 simultaneously and run the data based of point measurement, the field source situation of change of measured data based correction instrument 4 records is come physical prospecting instrument 1 measured data are carried out the field source correction, so just can obtain field source to the same stable field source of artificial manufacturing field source, just equally accurate with artificial manufacturing field source quasi-instrument through the revised race point data of field source.The heaviness of so not only having omitted artificial manufacturing field source is difficult for determining of resettlement but also obtains equally accurate measurement result, obtains very big practical value in practical application.
Realize comprising in the device of the present invention physical prospecting instrument 1, electrode bar 2 and correction instrument 4.
Further specify below in conjunction with drawings and Examples.
Among the present invention, as shown in Figure 1, the high-precision identical time service of correction instrument 4 and physical prospecting instrument 1 configuration high accuracy clock and GPS, correction instrument 4 is measured automatically according to setting-up time, and physical prospecting instrument 1 runs the some not timing and measures; What correction instrument 4 was measured is the variation of field source itself, physical prospecting instrument 1 measured field source is subjected to the variation that forms after the influence of plastid differently, because field source is unsettled, so the field source correction is carried out in the variation of measured data based field source, modification method is when measured:
A) data of the correction instrument 4 after utilizing denoising level and smooth are as the raw data A that corrects;
B) learnt from else's experience that to make the value that arithmetic on average obtains be T, then T0=A for the data of above-mentioned a) step process;
C) according to the Measuring Time of physical prospecting instrument 1 one point data, find the data T1 of identical time correction instrument 4;
D) value that obtains of T1-T0 is the corrected value T3 of one point data, and T3 can just can bear, that is: T1-T0=T3, and one point data T4 adds the value T5 after T3 is diurnal correction, that is: T4+T3=T5; T5 need be shown as row separately at one point data, and the one point data file need show the value after original value and the correction.
In aforementioned, physical prospecting instrument 1 is connected electrode bar 2 with correction instrument 4, and electrode bar 2 lower ends are implanted and measured field source the earth 3, and wherein, physical prospecting instrument 1 is identical equipment with correction instrument 4, comprises seismic instrument, electrical method instrument, magnetometer and gravity apparatus.
As shown in Figure 2, form instrument system by a correction instrument 4 and one group many physical prospecting instrument 1, the time service mode of every instrument configuration high accuracy clock and GPS, make correction instrument 4 keep high-precision identical clock with physical prospecting instrument 1, correction instrument 4 can be measured with reference to automatic process of measurement automatically according to the time that configures, and physical prospecting instrument 1 runs the some not timing and measures.What correction instrument 4 was measured is the variation of field source itself, correction instrument 4 measured field sources are subjected to the variation that forms after the influence of plastid differently, because field source is unsettled, so the field source correction is carried out in the variation of measured data based field source, method is as described below when measured:
1), because the interference on instrument itself and ground is at first at first carried out level and smooth computing removal noise to correction instrument 4 measured data, 53 times average formula is as follows:
Y
0=（-3y
-2+12y
-1+17y
0+12y
1-3y
2）/35
Y wherein
0Represent the data in the new array, y
-2,
, y
1, y
25 data representing the adjacent continuous in the former array.
2), physical prospecting instrument 1 runs the measured data of point and carries out the field source correction according to instrument A is measured simultaneously, method is:
A) data of the correction instrument 4 after utilizing denoising level and smooth are as the raw data that corrects, for example A1, A2, A3, A4, A5, A6;
B) learnt from else's experience that to make the value that arithmetic on average obtains be T0 for the data of above-mentioned a) step process,
T0=(A1+A2+A3+A4+A5+A6)/6 then;
C) according to the Measuring Time of physical prospecting instrument 1 one point data, find the data T1 of identical time correction instrument 4;
D) value that obtains of T1-T0 is the corrected value T3 of one point data, and T3 can just can bear, that is: T1-T0=T3, and one point data T4 adds the value T5 after T3 is diurnal correction, that is: T4+T3=T5; This value T5 need be shown as row separately at one point data, and the one point data file need show the value after original value and the correction; One point data and day parameter show respectively according to being divided into two data forms.
In aforementioned, the progress that the present invention gives prominence to is, do not provide anti-interference with improve device such as measuring accuracy, neither increase device by artificial method and remove to compensate the earth electromagnetic field field source, but the variation that adapts to the natural electric field field source only compares by the numerical value of revising field source and obtains accurate data.And being compared to instruments such as increasing means for anti-jamming, raising measuring accuracy, cost is lower, and accuracy is higher, thereby thereby solves the unstable shortcoming that causes the inaccuracy of data that instrument is surveyed of the field source of natural electric field own.
The invention solves in the prior art, because of the unstable defective that causes the data inaccuracy of earth electromagnetic field field source, obtain important breakthrough for the physical prospecting technology, detection efficiency and precision increase substantially, and actual test effect is remarkable.Compared with prior art, have the following advantages:
1), light and fast: omit the heaviness of manually making field source, reduce the weight above 80% greatly, be easy to resettlement and use;
2), data are accurate: no matter which kind of the natural electric field field source does changes, thereby changes the accuracy that numerical value has ensured measurement data by repairing field source;
3), cost is lower: instrument need not to adopt anti-interference with improve device such as measuring accuracy, save cost.
4), applied widely: as not to be subjected to low-resistance geologic body shielding and the high resistant geologic body is nonconducting influences, to be suitable for the exploration in various areas.
Claims (3)
1. the geophysical prospecting method of earth electromagnetic field field source correction and measurement mechanism, it is characterized in that: the high-precision identical time service of correction instrument (4) and physical prospecting instrument (1) configuration high accuracy clock and GPS, correction instrument (4) is measured automatically according to setting-up time, and physical prospecting instrument (1) runs the some not timing and measures; What correction instrument (4) was measured is the variation of field source itself, the measured field source of physical prospecting instrument (1) is subjected to the variation that forms after the influence of plastid differently, because field source is unsettled, so the field source correction is carried out in the variation of measured data based field source, modification method is when measured:
A) data of the correction instrument (4) after utilizing denoising level and smooth are as the raw data A that corrects;
B) learnt from else's experience that to make the value that arithmetic on average obtains be T, then T0=A for the data of above-mentioned a) step process;
C) according to the Measuring Time of physical prospecting instrument (1) one point data, find the data T1 of identical time correction instrument (4);
D) value that obtains of T1-T0 is the corrected value T3 of one point data, and T3 can just can bear, that is: T1-T0=T3, and one point data T4 adds the value T5 after T3 is diurnal correction, that is: T4+T3=T5; T5 need be shown as row separately at one point data, and the one point data file need show the value after original value and the correction.
2. geophysical prospecting method and the measurement mechanism of earth electromagnetic field field source as claimed in claim 1 correction, it is characterized in that, physical prospecting instrument (1) is connected electrode bar (2) with correction instrument (4), electrode bar (2) lower end is implanted and is measured field source the earth (3), wherein, physical prospecting instrument (1) is identical equipment with correction instrument (4), comprises seismic instrument, electrical method instrument, magnetometer and gravity apparatus.
3. geophysical prospecting method and the measurement mechanism of earth electromagnetic field field source as claimed in claim 1 correction, it is characterized in that, form instrument system by a correction instrument (4) and one group many physical prospecting instrument (1), the time service mode of every instrument configuration high accuracy clock and GPS, make correction instrument (4) keep high-precision identical clock with physical prospecting instrument (1), correction instrument (4) can be measured with reference to automatic process of measurement automatically according to the time that configures, and physical prospecting instrument (1) runs the some not timing and measures; What correction instrument (4) was measured is the variation of field source itself, the measured field source of correction instrument (4) is subjected to the variation that forms after the influence of plastid differently, because field source is unsettled, so the field source correction is carried out in the variation of measured data based field source, method is as described below when measured:
1), because the interference on instrument itself and ground is at first at first carried out level and smooth computing removal noise to the measured data of correction instrument (4), 53 times average formula is as follows:
Y
0=（-3y
-2+12y
-1+17y
0+12y
1-3y
2）/35
Y wherein
0Represent the data in the new array, y
-2,
, y
1, y
25 data representing the adjacent continuous in the former array.(1) run the measured data of point and carry out the field source correction according to instrument A is measured simultaneously, method is:
A) data of the correction instrument (4) after utilizing denoising level and smooth are as the raw data that corrects, for example A1, A2, A3, A4, A5, A6;
B) learnt from else's experience that to make the value that arithmetic on average obtains be T0 for the data of above-mentioned a) step process,
T0=(A1+A2+A3+A4+A5+A6)/6 then;
C) according to the Measuring Time of physical prospecting instrument (1) one point data, find the data T1 of identical time correction instrument (4);
D) value that obtains of T1-T0 is the corrected value T3 of one point data, and T3 can just can bear, that is: T1-T0=T3, and one point data T4 adds the value T5 after T3 is diurnal correction, that is: T4+T3=T5; This value T5 need be shown as row separately at one point data, and the one point data file need show the value after original value and the correction; One point data and day parameter show respectively according to being divided into two data forms.
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Cited By (2)
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| CN107153167A (en) * | 2016-03-02 | 2017-09-12 | 陕西飞机工业（集团）有限公司 | A kind of aircraft magnetic field ground test method |
| CN115437024A (en) * | 2022-11-07 | 2022-12-06 | 四川省冶勘设计集团有限公司 | Double-parameter processing method for non-planar wave data of electromagnetic field signal of artificial source frequency domain |
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| US20090001985A1 (en) * | 2007-06-29 | 2009-01-01 | Schlumberger Technology Corporation | Methods for Electromagnetic Measurements and Correction of Non-Ideal Receiver Responses |
| US20100277177A1 (en) * | 2009-04-29 | 2010-11-04 | Alumbaugh David L | Analysis of subsurface electromagnetic data through inversion with constrained casing correction coefficients |
| WO2012052770A2 (en) * | 2010-10-20 | 2012-04-26 | Emon (Uk) Limited | Methods and apparatus for geophysical prospecting to detect bodies of fluids in underground formations |
| CN102879828A (en) * | 2012-10-11 | 2013-01-16 | 甘肃铁道综合工程勘察院有限公司 | Audio magnetotelluric optimized collection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107153167A (en) * | 2016-03-02 | 2017-09-12 | 陕西飞机工业（集团）有限公司 | A kind of aircraft magnetic field ground test method |
| CN107153167B (en) * | 2016-03-02 | 2019-12-24 | 陕西飞机工业（集团）有限公司 | Aircraft magnetic field ground test method |
| CN115437024A (en) * | 2022-11-07 | 2022-12-06 | 四川省冶勘设计集团有限公司 | Double-parameter processing method for non-planar wave data of electromagnetic field signal of artificial source frequency domain |
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