CN110471122A - A kind of 3 D resistivity depth measurement application method based on high-density electric urethane acrylate anionomer - Google Patents
A kind of 3 D resistivity depth measurement application method based on high-density electric urethane acrylate anionomer Download PDFInfo
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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Abstract
The invention discloses a kind of 3 D resistivity depth measurement application method based on high-density electric urethane acrylate anionomer, 3 D resistivity data volume is set up using high density 2D resistivity meter urethane acrylate anionomer, the big pole span electric sounding section of big net degree, electrode arrangement is converted into symmetrical quadrupole device, it is reconfigured to uneven survey grid, 3-d inversion has been carried out using least square method, the observation method increases investigation depth, it reduces costs, the space characteristics of geologic body are effectively reflected, is laid for drilling and provides detailed information.
Description
Technical field
The present invention relates to geologic prospect technical field, specially a kind of three-dimensional resistance based on high-density electric urethane acrylate anionomer
Rate depth measurement application method.
Background technique
The exploration of high-resolution geological and mineral three-dimensional is the target of electrical method development, acquires high-resolution electrical method three-dimensional observation number
Accordingly and development 3-d inversion is the key that survey the detection of area's resistivity three-dimensional fine structure.Currently, resistivity sounding three-dimensional observation
Mode be research importance, it is not only related to the efficiency and cost of field inspection, be also related to data resolution ratio and
Efficiency of inverse process.
Available data shows that common resistivity inversion is only able to satisfy the exploration of superficial part three-dimensional and requires, and is chiefly used in shallow seated groundwater
Text, engineering, environment prospecting, Loke proposes a kind of three-dimensional observation mode of simple form, the case where resolution ratio is not affected by influence
Under, data point reduces one third, to reduce field work amount, decreases calculation amount, it is only necessary to 80486DX2/66 type
Microcomputer, that is, implementable 3-d inversion explains that application prospect is preferable.From the point of view of meeting mineral resources deep prospecting, three-dimensional exploration is commonly used
Depth is difficult to meet the requirements, and it is more practical to do 3-d inversion with big pole span electric sounding data at this time.Because being measured in plane
Electric sounding data be it is three-dimensional, field inspection is easy to implement, including existing a large amount of electric sounding data can re-use.
3DRES is for handling three-dimensional-electroded method measurement (Li and Oldenburg 1992, White at
Al.2001) data, it can automatically form 3 D resistivity model according to institute's measured data.In this kind of measurement, electrode presses rectangle net
Grillages column.Require emphasis a bit, three-dimensional-electroded method measurement be not merely formed by a series of 2-D data superpositions, but
Mature 3-d inversion method, there is the application characteristic of own.The three-diemsnional electrode arrangement being commonly used in real work, such as
Pole-pole, pole-dipole and dipole-dipole etc..Other arrangement because valid data coverage area is less and very
It is few to use.When computer possesses 1.5 GB RAM, the net degree which supports is up to a electrode point in 77 × 77 (or 5929)
(Loke 2002) 。
Test proves, when bad using simple 2D method (or 1D electric sounding) effect, uses support multiple parallel electricity
2D measurement can be exchanged into 3D and measures by the high-density electric instrument and multi-fold technology of cable, and it is three-dimensional to can get apparent superficial part
Inverse model.
In order to reduce cost, and it is capable of increasing investigation depth, effectively reflects the space characteristics of geologic body, for the cloth that drills
If providing detailed information, the present invention provides a kind of 3 D resistivity depth measurement application side based on high-density electric urethane acrylate anionomer
Method.
Summary of the invention
The present invention solves the technical problem of how to provide a kind of three-dimensional electricity based on high-density electric urethane acrylate anionomer
Resistance rate depth measurement application method is set up three-dimensional using high density 2D resistivity meter urethane acrylate anionomer, the big pole span electric sounding section of big net degree
Electrode arrangement is converted to symmetrical quadrupole device, is reconfigured to uneven survey grid by resistivity data body, using least square method into
Go 3-d inversion, which increases investigation depth, reduces costs, the space characteristics of geologic body are effectively reflected,
It is laid for drilling and provides detailed information.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: it provides a kind of based on high-density electric
The 3 D resistivity depth measurement application method of urethane acrylate anionomer, the specific method is as follows:
1) 2D high-density resistivity instrument is used, along the equidistant data intercept body of rectangular cross section；
2) on the basis of existing 2D high-density resistivity cross-sectional data, three-dimensional uneven survey grid electrode arrangement method and net are constructed
Lattice；
3) requirement of 3-d inversion program is combined, the conversion of two three-dimensional data formats is carried out, writes the uneven survey grid of 2D high-density electric
3-d inversion data format.
Preferably, the specific intercept method are as follows: lay 2D high-density electric section 6 in selection area, number is
11,12,13,14,15,16, profile spacing is 50m, and for section point away from 10m, profile azimuth is 295 °, by 2D high-density electric
The observation data point of section urethane acrylate anionomer inverted trapezoidal is intercepted, and rectangle data point is adjusted to, always point number be respectively 38,
62, length profile is 240m, and minimum AB is away from=60m, and maximum AB is away from=660m.
Preferably, the specific method is as follows for the three-dimensional uneven survey grid electrode arrangement method of the building and grid:
High-density electric Wenner arrangement data format is converted, is converted to symmetrical quadrupole electric sounding AB, MN pole span relationship such as
Under:
AB/2:30,60,90,120,150,180,210,240,270,300,330
MN/2:10,20,30,40,50,60,70,80,90,100,110
Three-dimensional electric sounding measures Uneven mesh spacing spacing, each section electric sounding point corresponding A, B, M, N electrode position, setting are as follows: with
It is coordinate origin 0,0 that No. 16 sections, which originate depth measurement point 38, using each depth measurement point corresponding A, B, M, N electrode position as abscissa,
All electrodes are established using 11,12,13,14,15, No. 16 sections equidistant 0m, 50m, 100m, 150m, 200m, 250m as ordinate
The corresponding relationship of point and resistivity, elevation, abscissa grid spacing are as follows:
10
0 20 30 40……870 880 900
Grid spacing is symmetrically arranged are as follows: 0 20 10 10 10 ... 10 20
Ordinate grid away from are as follows: 50.
Preferably, described, to write the uneven survey grid 3-d inversion data format of 2D high-density electric specific as follows: by not
Uniform survey grid electrode arrangement and grid spacing work out uneven survey grid 3-d inversion data lattice in conjunction with the requirement of 3-d inversion program
High density winner Data Format Transform is that uneven survey grid 3-d inversion data format is as follows by formula switching software:
1 Block
89 6
Nonuniform grid
x-location of grid-lines
0 20 30 40……870 880 900
y-location of grid-lines
0 50 100 150 200 250
7
858
300 0 360 0 320 0 340 0 251
270 0 390 0 310 0 350 0 327
240 0 420 0 300 0 360 0 392
……………………………………………………
Topography
2
244 244 243………………………………221
0
0
0
0
0
Bring of the present invention is the utility model has the advantages that use high density 2D resistivity meter urethane acrylate anionomer, the big pole span electric sounding section of big net degree
3 D resistivity data volume is set up, electrode arrangement is converted into symmetrical quadrupole device, uneven survey grid is reconfigured to, uses minimum
Square law has carried out 3-d inversion, which increases investigation depth, reduces costs, and effectively reflects the sky of geologic body
Between feature, for drilling lay provide detailed information, uneven survey grid high-density electric observation system is suitable for Fast Rectangle
Grid high-density electric 3-d inversion technology, because accuracy of instrument and execution conditions limit its application effect, data volume is converted
Arrangement is able to satisfy 3-d inversion requirement, and in the case where encrypting profile spacing and pole span, inversion result is more accurate.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is 2D high-density electric section layout drawing of the present invention；
Fig. 2 is three-dimensional electric sounding measurement Uneven mesh spacing figure of the invention；
Fig. 3 is the direction x and y apparent resistivity value pseudosection map of the present invention；
Fig. 4 is 3-d inversion result map one of the present invention；
Fig. 5 is 3-d inversion result map two of the present invention；
Fig. 6 is the comprehensive 3 dimensional drawing of geology physical prospecting of the present invention；
Fig. 7 is 40,80,120m depth 3-d inversion slice map of the invention.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The 3 D resistivity depth measurement data format of high-density electric urethane acrylate anionomer is similar to uneven survey grid mode, without abiding by
The requirement of high-density electric winner or the arrangement of equidistant quadrupole is followed, as long as the relative position of electrode or coordinate determine, so that it may form
Uneven survey grid data format is used for 3-d inversion, and electric sounding section can the arrangement of equidistant or Unequal distance.Only electric sounding section
Can not be excessively sparse, it will increase 3-d inversion geological objects boundary error in this way.
It please refers to shown in Fig. 1-7, a kind of three-dimensional based on high-density electric urethane acrylate anionomer in the specific embodiment of the invention
Resistivity sounding application method, the specific method is as follows:
1) 2D high-density resistivity instrument is used, along the equidistant data intercept body of rectangular cross section；
2) on the basis of existing 2D high-density resistivity cross-sectional data, three-dimensional uneven survey grid electrode arrangement method and net are constructed
Lattice；
3) requirement of 3-d inversion program is combined, the conversion of two three-dimensional data formats is carried out, writes the uneven survey grid of 2D high-density electric
3-d inversion data format.
Steps are as follows for specific implementation process:
1) in Peng Lai great Liu row goldfield, 2D high-density electric section 6, number 11,12,13,14,15,16, section are laid
Spacing is 50m, and for section point away from 10m, profile azimuth is 295 °, by the sight of 2D high-density electric section urethane acrylate anionomer inverted trapezoidal
Measured data point is intercepted, and rectangle data point is adjusted to, as shown in Fig. 1 2D high-density electric section layout drawing, point number always
Respectively 38,62, length profile are 240m, and minimum AB is away from=60m, and maximum AB is away from=660m.
2) it is mentioned in the measurement study course of related resistivity imaging, it includes that different direction monopole-is mono- that three-diemsnional electrode, which arranges grid,
Pole measurement, the parallel survey line measurement of 2D, the measurement of broken line grid, the measurement of different direction survey line；This test is defined as uneven survey grid
Electrode arrangement grid, as shown in Fig. 2 three-dimensional electric sounding measurement Uneven mesh spacing figure:
Uneven survey grid grid setting is using symmetrical four-pole sounding etc. than arranging AB, MN as foundation；It is adopted with Peng Lai great Liu row goldfield
For Exhausted area prospecting, high-density electric Wenner arrangement data format is converted, is converted to the pole symmetrical quadrupole electric sounding AB, MN
It is as follows away from relationship:
High-density electric Wenner arrangement data format is converted, is converted to symmetrical quadrupole electric sounding AB, MN pole span relationship such as
Under:
AB/2:30,60,90,120,150,180,210,240,270,300,330
MN/2:10,20,30,40,50,60,70,80,90,100,110
Three-dimensional electric sounding measures Uneven mesh spacing spacing, each section electric sounding point corresponding A, B, M, N electrode position, setting are as follows: with
It is coordinate origin 0,0 that No. 16 sections, which originate depth measurement point 38, using each depth measurement point corresponding A, B, M, N electrode position as abscissa,
All electrodes are established using 11,12,13,14,15, No. 16 sections equidistant 0m, 50m, 100m, 150m, 200m, 250m as ordinate
The corresponding relationship of point and resistivity, elevation, abscissa grid spacing are as follows:
10
0 20 30 40……870 880 900
Grid spacing is symmetrically arranged are as follows: 0 20 10 10 10 ... 10 20
Ordinate grid away from are as follows: 50.
3) it is specific as follows to write the uneven survey grid 3-d inversion data format of 2D high-density electric: by uneven survey grid electrode
Arrangement and grid spacing work out uneven survey grid 3-d inversion Data Format Conversion Software in conjunction with the requirement of 3-d inversion program, will
High density winner Data Format Transform is that uneven survey grid 3-d inversion data format is as follows:
1 Block
89 6
Nonuniform grid
x-location of grid-lines
0 20 30 40……870 880 900
y-location of grid-lines
0 50 100 150 200 250
7
858
300 0 360 0 320 0 340 0 251
270 0 390 0 310 0 350 0 327
240 0 420 0 300 0 360 0 392
……………………………………………………
Topography
2
244 244 243………………………………221
0
0
0
0
0
(4) the uneven survey grid 3-d inversion case column of 2D high-density electric
Mesozoic Era quartz vein being distributed in great Liu row goldfield has high resistant feature, and more than 9000 Ω m, granite is in resistivity
Middle resistance feature, resistivity is between 3000-4000 Ω m, and kataclastics class is in low-resistance feature, and resistivity is less than 1000 Ω m, theoretically
The resistivity of dry rock and air is relatively large, and rock is due to hole, crack is aqueous and with its humidity or saturation degree
Increasing resistivity can sharply decline, at the same different rock in moisture content under the same conditions due to the difference of moisture salinity,
Its resistivity has certain difference.Therefore, the resistivity of tomography depend primarily on tomography degree of crushing and its aqueous saturation degree；
The resistivity of rock stratum depends primarily on the saturation degree and moisture salinity of rock.In general, when tomography, rock crack and goaf contain
When water, resistivity of the resistivity much smaller than not rock containing water；When tomography, rock crack and not aqueous goaf, resistance
Rate is generally in high resistant feature.In addition, rock stratum can change with the variation lithology of depth, corresponding resistor rate is along longitudinal direction in (depth)
It changes greatly, resistivity overall trend increases with the increase of depth, has reacted the change in resistance of tectonic basement weathered zone.
Through on-site inspection there may be goaf locations to have laid 11,12,13,14,15, No. 16 6 high-density electrics
Section, profile spacing are 50m, are put away from 20m, and data have been carried out three-dimensional anti-after format is converted using Sweden's RES3D software
It drills, has low-resistance abnormal below the middle part earth's surface of 6 sections, be inferred as caused by goaf, see: the direction Fig. 3 x and y apparent resistance
Shown in rate value pseudosection map, shown in Fig. 4 3-d inversion result map one and Fig. 5 3-d inversion result map two and Fig. 6 geology physical prospecting is comprehensive
Close 40 in 3 dimensional drawing and Fig. 7,80, shown in 120m depth 3-d inversion slice map.The above graph transverse direction scale mark is not
Together, grid is pressed away from 0 in the direction x in the direction x and y apparent resistivity value pseudosection map ..., and 900m is drawn, and in 3-d inversion result map
It is drawn by 0-240m section physical length, inverting exception relative position is corresponding consistent.
WZK14-1 verifying one (see figure 6) of drilling is laid in the middle part of No. 14 sections, sees tomography, rock deeply in 39.5-43.6m
Property be weak ferritization fractured granites, core recovery 89%；It is goaf in 120.3-122.3m, lithology is predominantly green
Mudstone and kaolinization, core are broken, and alteration is stronger, and the core taking rate that be averaged is 25%；It is goaf in 140-141.8m,
Lithology is granite, and core is broken, is in angular, core recovery 100%；It is goaf in 217.6-219.7m, lithology is
Granite, core is broken, is in angular, core recovery 19%.
(5) precision and error analysis
The high-density electric section of the area 11,12,13,14,15,16 is through resistivity two dimensional inversion, and the number of iterations minimum 2 times,
Highest 4 times, mean square error minimum 19.7%, up to 60.4%, Averaged Square Error of Multivariate 40.3%, 3-d inversion the number of iterations is 6
Secondary, mean square error 49.8%, the two difference 9.5% is shown in Table 1
1 trueness error statistical form of table
Due to the number of iterations difference, inverting mean square error is different, and it is unstable that excessively high the number of iterations will lead to inverting, 2D high density
The inverting after 6 iteration of the uneven survey grid 3-d inversion of electrical method reaches convergence.Drilling verification illustrates 3-d inversion through 6 iteration
Result afterwards reflects the spread situation in goaf.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (4)
1. a kind of 3 D resistivity depth measurement application method based on high-density electric urethane acrylate anionomer, it is characterised in that: specific method
It is as follows:
1) 2D high-density resistivity instrument is used, along the equidistant data intercept body of rectangular cross section；
2) on the basis of existing 2D high-density resistivity cross-sectional data, three-dimensional uneven survey grid electrode arrangement method and net are constructed
Lattice；
3) requirement of 3-d inversion program is combined, the conversion of two three-dimensional data formats is carried out, writes the uneven survey grid of 2D high-density electric
3-d inversion data format.
2. a kind of 3 D resistivity depth measurement application method based on high-density electric urethane acrylate anionomer according to claim 1,
It is characterized by: specific intercept method are as follows: lay 2D high-density electric section 6 in selection area, number 11,12,13,
14,15,16, profile spacing is 50m, and for section point away from 10m, profile azimuth is 295 °, by 2D high-density electric section winner
The observation data point of device inverted trapezoidal is intercepted, and rectangle data point is adjusted to, and point number is respectively 38,62 always, and section is long
Degree is 240m, and minimum AB is away from=60m, and maximum AB is away from=660m.
3. a kind of 3 D resistivity depth measurement application method based on high-density electric urethane acrylate anionomer according to claim 1,
It is characterized by: the specific method is as follows for the three-dimensional uneven survey grid electrode arrangement method of building and grid:
High-density electric Wenner arrangement data format is converted, is converted to symmetrical quadrupole electric sounding AB, MN pole span relationship such as
Under:
AB/2:30,60,90,120,150,180,210,240,270,300,330
MN/2:10,20,30,40,50,60,70,80,90,100,110
Three-dimensional electric sounding measures Uneven mesh spacing spacing, each section electric sounding point corresponding A, B, M, N electrode position, setting are as follows: with
It is coordinate origin 0,0 that No. 16 sections, which originate depth measurement point 38, using each depth measurement point corresponding A, B, M, N electrode position as abscissa,
All electrodes are established using 11,12,13,14,15, No. 16 sections equidistant 0m, 50m, 100m, 150m, 200m, 250m as ordinate
The corresponding relationship of point and resistivity, elevation, abscissa grid spacing are as follows:
10
0 20 30 40……870 880 900
Grid spacing is symmetrically arranged are as follows: 0 20 10 10 10 ... 10 20
Ordinate grid away from are as follows: 50.
4. a kind of 3 D resistivity depth measurement application method based on high-density electric urethane acrylate anionomer according to claim 1,
It is characterized by: it is specific as follows to write the uneven survey grid 3-d inversion data format of 2D high-density electric: by uneven survey grid electricity
Pole arrangement and grid spacing work out uneven survey grid 3-d inversion Data Format Conversion Software in conjunction with the requirement of 3-d inversion program,
It is that uneven survey grid 3-d inversion data format is as follows by high density winner Data Format Transform:
1 Block
89 6
Nonuniform grid
x-location of grid-lines
0 20 30 40……870 880 900
y-location of grid-lines
0 50 100 150 200 250
7
858
300 0 360 0 320 0 340 0 251
270 0 390 0 310 0 350 0 327
240 0 420 0 300 0 360 0 392
……………………………………………………
Topography
2
244 244 243………………………………221
0
0
0
0
0。
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| CN113125517A (en) * | 2021-04-09 | 2021-07-16 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Device and method for monitoring tree root infiltrating irrigation by using three-dimensional resistivity |
| US20230003917A1 (en) * | 2020-06-18 | 2023-01-05 | Shandong University | Three-dimensional imaging method and system for surface comprehensive geophysical prospecting |
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| CN110471122B (en) | 2021-07-30 |
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