CN106842332A - A kind of comprehensive electrical prospecting method - Google Patents
A kind of comprehensive electrical prospecting method Download PDFInfo
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- CN106842332A CN106842332A CN201611213017.0A CN201611213017A CN106842332A CN 106842332 A CN106842332 A CN 106842332A CN 201611213017 A CN201611213017 A CN 201611213017A CN 106842332 A CN106842332 A CN 106842332A
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Abstract
A kind of comprehensive electrical prospecting method, it is of the invention to concretely comprise the following steps：Exploration targets body characteristicses, topography and geomorphology relief feature, exploration targets and requirement based on electrical prospecting area, in the electrical method constituency exploration phase using conventional two-dimentional electrical prospecting, obtain electrical prospecting generaI investigation target area；In the Electrical Survey exploration phase using exploration efficiency in-line three-dimensional electrical prospecting method high, electrical prospecting detailed survey target area is obtained；In the electrical method detailed survey exploration phase using the excellent groined type three-dimensional electrical prospecting method of exploration effects, the excellent advantage of the exploration effects of groined type three-dimensional electrical prospecting method is played, obtain the target position of exploration checking engineering.Comprehensive electrical prospecting method proposed by the present invention fully excavates the advantage of distinct methods, and different electrical prospecting methods are targetedly selected in the different electrical prospecting stages, so as to realize high efficiency, accurately solve the problems, such as Exploration targets and target position determination.
Description
Technical field
The present invention relates to a kind of comprehensive electrical prospecting method in Key words exploration geophysics field.
Background technology
In Key words exploration geophysics field, electrical prospecting is divided into one-dimensional, two and three dimensions electrical prospecting.One-dimensional electrical prospecting by
Low in surveying accuracy, effect is poor, does not use substantially at present.Two-dimentional electrical prospecting precision and effect be superior to it is one-dimensional, but exploration effect
Rate is less than the latter.Three-dimensional electrical prospecting precision and effect are superior to peacekeeping two dimension, but due on supply terminals and measurement point quantity
Far more than peacekeeping two dimension, so as to cause three-dimensional electrical prospecting efficiency far less than peacekeeping two dimension, therefore, although the method
There are a good exploration effects, but only used on a small quantity in the case where the very crucial exploration area in part and funds are very sufficient.
Two-dimentional electrical prospecting needs to arrange electrical prospecting electric power system and measuring system in every exploration line, and rear issue
The data of every exploration line are individually processed as 2-D data according in processing procedure, because actual exploration area is seldom deposited
It is more three-dimensional geological anomalous body in real two dimension geological anomalous body, therefore two-dimentional electrical prospecting achievement is approximate achievement,
So as to cause its exploration effects poor.But because two-dimentional electrical prospecting is powered only on a supply terminals for exploration line, same
Carry out electrical method data acquisition in exploration line, its exploration efficiency is higher, and exploration effects are better than one-dimensional, therefore be electrical method conventional at present
Exploitation method.But due to every exploration line of the method be required to arrange electric power system, cause arrange electric power system workload compared with
Greatly；Often arrange that supply lines is only capable of one measurement line of measurement, if exploration area is with a varied topography, vegetation development, can cause to be difficult to
Supply lines even cannot be arranged, so as to the result for causing two-dimentional electrical prospecting to carry out, the method is limited in complicated landform
Application.
Completeness three-dimensional electrical prospecting method is that the supply terminals of whole exploration area is respectively powered once, and each is powered
, it is necessary to all measurement point gathered datas in whole exploration area during point power supply.The method is the geological anomalous body in actual exploration area
Consider as three-dimensional geological anomalous body, more meet actual geological condition.But due to the supply terminals of completeness three-dimensional electrical prospecting
The whole three-dimensional electrical prospecting measurement point of covering, the quantity of supply terminals is needed to be equal to measurement point quantity, it is necessary to in whole exploration area
All supply terminals powered respectively, needed to all measurement point gathered datas in whole exploration area during power supply every time, by
It is excessive in supply terminals quantity, so as to cause workload to be multiplied.
Completeness three-dimensional electrical prospecting data volume and workload are much larger than two-dimentional electrical prospecting, so as to cause in actual exploration
During need to put into substantial amounts of human and material resources and time, efficiency is low, high cost.In addition, in the wild in actual exploration process,
Because three-dimensional electrical prospecting workload is big, it is difficult to the workload of whole exploration area was completed within one day, once need complete across day
Into, then be required to arrange and reclaim the electric power system and measuring system of whole exploration area daily, exist very big human and material resources and
Waste of time, also results in that its exploration efficiency is lower, and applicability is not strong.Be additionally, since completeness three-dimensional electrical prospecting for
The landform requirement in ground observation area is high, if with a varied topography, vegetation development, gives arrangement electrical prospecting electric power system and measuring system
Bring very big difficulty, it is possible to lead to not carry out complete three-dimensional electrical prospecting work.Therefore, completeness three-dimensional electrical method
Although exploration has obvious advantage in effect and precision, because its efficiency is too low, high cost was required landform
Height, so as to cause seldom to be used in the method actual investigation and prospecting in the wild.
Based on completeness three-dimensional electrical prospecting efficiency is very low, the shortcoming that applicability is not strong, current someone have studied cross
Intersect the three-dimensional electrical prospecting method that measuring electrode is arranged with Γ shapes.Its starting point is by reducing the electrical method gathered data of measurement point
Amount, realizes reducing field work amount, reaches the purpose for improving exploration efficiency.But cruciform shape and Γ shapes arrange measuring electrode
Three-dimensional electrical prospecting method does not reduce supply terminals, and the supply terminals of its three-dimensional electrical prospecting stills need to cover entirely three-dimensional electrical method and surveys
Measurement point is visited, the quantity of supply terminals is equal to measurement point quantity, and because supply terminals quantity is excessive, and power supply technique is used at present
Timesharing branch is powered, and is only capable of powering a supply terminals every time, so as to the workload for causing electric power system cannot be reduced.The method
Selected section measurement point collection electrical method data when being powered only with certain supply terminals, but to complete number when all supply terminals are powered
According to collecting work, each measurement point of whole exploration area is required to arrangement, when simply some supply terminals are powered, has part measurement point not
Collection electrical method data, the physical points arrangement of measurement point is not reduced.Therefore above-mentioned cruciform shape and the three-dimensional electrical prospecting of Γ shapes
Method increases relative to the exploration efficiency of completeness three-dimensional electrical prospecting method, but reduces certain supply terminals by then passing through
Electrical method data measured during power supply, it is still necessary to which all supply terminals to whole exploration area carry out time sharing power supply, and need arrangement
The physical points of whole exploration area measurement point, therefore its exploration efficiency improves unobvious.
Main section and depth detecting method using two-dimentional electrical prospecting carries out exploration area in terms of comprehensive electrical prospecting at present
Constituency and target position determine, then use completeness or cruciform shape or Γ shapes three-dimensional on a small quantity in the case where the conditions such as funds meet
Electrical prospecting is examined the geological condition of target position, once when the conditions such as funds are unsatisfactory for, is then surveyed only with two-dimentional electrical method
Visiting achievement carries out the last determination of target position.If this kind synthesis electrical prospecting mode is only from two-dimentional electrical prospecting achievement, can be by
Three-dimensional geologic is treated according to two-dimentional geologic body in two-dimentional electrical prospecting, influences its surveying accuracy, it is possible to cause subsequently to survey
Visit checking project failure or increase quantities；If carrying out integrated exploration from two-dimentional electrical prospecting and conventional three-dimensional electrical prospecting,
Then because conventional three-dimensional electrical prospecting exploration efficiency is low, exploration cost is caused to raise, the problems such as exploration cycle extends.
The content of the invention
The purpose of the present invention is based on two-dimentional electrical prospecting efficiency high, three-dimensional electrical prospecting precision and the excellent basis of effect
On, a kind of comprehensive electrical prospecting method is proposed, realize high efficiency, accurately solve the problems, such as Exploration targets and target position determination.
The method is the exploration targets body characteristicses based on electrical prospecting area, topography and geomorphology relief feature, exploration targets and requirement, in electrical method
The constituency exploration phase, the flexibility that plays two-dimentional electrical prospecting method was strong, exploration efficiency is high using conventional two-dimentional electrical prospecting
Advantage, obtain electrical prospecting generaI investigation target area；In the Electrical Survey exploration phase using simple three-dimensional electrical prospecting method, play
The exploration effects of simple three-dimensional electrical prospecting method are good, efficiency high advantage, obtain electrical prospecting detailed survey target area；It is detailed in electrical method
The exploration phase is looked into using fine three-dimensional electrical prospecting method, the exploration effects for playing fine three-dimensional electrical prospecting method are excellent
Advantage, obtains the target position of exploration checking engineering.Comprehensive electrical prospecting method proposed by the present invention fully excavates the excellent of distinct methods
Point, different electrical prospecting methods are targetedly selected in the different electrical prospecting stages.
A kind of comprehensive electrical prospecting method proposed by the present invention is concretely comprised the following steps：
(1) the early stage Geological Achievements of look-ahead analysis exploration area, the exploration targets body characteristicses based on electrical prospecting area, landform ground
Looks relief feature, exploration targets and requirement, select conventional two-dimentional electrical prospecting method, carry out two-dimentional electrical method constituency exploration, are
The follow-up Electrical Survey exploration phase provides generaI investigation target area；
(2) based on the generaI investigation target area that the two-dimentional electrical method constituency exploration phase provides, selection in-line three-dimensional electrical prospecting method
Carry out simple three-dimensional Electrical Survey exploration, for the follow-up electrical method detailed survey exploration phase provides detailed survey target area；
(3) based on the detailed survey target area that the three-dimensional Electrical Survey exploration phase provides, selection groined type three-dimensional electrical prospecting method,
Carry out fine three-dimensional electrical method detailed survey exploration, for follow-up exploration checking engineering provides precision checking target position higher.
Wherein in step (2) in-line three-dimensional electrical prospecting method concrete meaning be：Surveyed based on two-dimentional electrical method constituency
Exploration targets body characteristicses, the topography and geomorphology relief feature of the generaI investigation target area for providing are provided, the electrical prospecting supply terminals of in-line is arranged,
Powered to underground by the electrode of supply terminals using electrical prospecting emitter, a plurality of surveying is received using electrical prospecting receiver simultaneously
The electric field signal of each measurement point on line is visited, apparent resistivity, the parameters of electrical induction of each measurement point when each supply terminals is powered is asked for,
Realize in-line three-dimensional electrical prospecting method.
In-line three-dimensional electrical prospecting method is concretely comprised the following steps：
A, look-ahead analysis generally investigate the early stage Geological Achievements of target area, infer the trend or main shaft square of main geologic anomalous body in area
To perpendicular to trend or the X-direction of major axes orientation setting in-line three-dimensional electrical prospecting, parallel to trend or major axes orientation setting
The Y-direction of in-line three-dimensional electrical prospecting, wherein X is mutually perpendicular to Y-direction, and is horizontal direction；
B, required according to exploration, it is determined that the exploration length of X and the Y-direction of generaI investigation target area, and determine X-direction measurement point spacing
The numerical value of c and Y-direction measurement point spacing d, so that it is determined that the numerical value of generaI investigation target area mesh parameter a and b；Based on surveying for generaI investigation target area
Visit target body characteristicses, topography and geomorphology relief feature, electrical prospecting supply terminals mesh coordinate (x, y) and actual phase using in-line
To coordinate (XC,YC) computation rule, determine the in-line three-dimensional all supply terminals mesh coordinates (x, y) of electrical prospecting and relative coordinate
(XC,YC), and arrange supply terminals；
C, exploration targets body characteristicses, topography and geomorphology relief feature based on generaI investigation target area, are required according to exploration and X-direction is surveyed
Amount point spacing c, Y-direction measurement point spacing d, the numerical value of mesh parameter a and b, arrange complete three-dimensional electrical prospecting measurement point；
D, each supply terminals on above-mentioned selected in-line three-dimensional electrical prospecting supply lines are powered respectively, using more logical
Road electrical prospecting measuring system or multiple electrical prospecting measuring systems are to generally investigating the three-dimensional electrical prospecting measurement point of the in-line of target area
Electrical method data acquisition is carried out, the in-line three-dimensional electrical prospecting that all measurement points in target area are generally investigated when each supply terminals is powered is got
Data；
E, all electrical prospecting measurement data are integrated into in-line three-dimensional electrical prospecting data, carry out the three-dimensional electricity of in-line
Method data processing, obtains the in-line three-dimensional electrical prospecting achievement of generaI investigation target area, so as to realize that the in-line for generally investigating target area is three-dimensional
Electrical prospecting；
The numerical value of mesh parameter a and b wherein in in-line three-dimensional electrical prospecting method specific steps (b), in-line
Electrical prospecting supply terminals mesh coordinate (x, y) and actual relative coordinate (XC,YC) concrete meaning of computation rule is：
If generaI investigation target area X-direction is long L meters, Y-direction is long M meters, and X-direction measurement point spacing is c meters, Y-direction measurement point spacing
It is d meters, is origin with the central point for generally investigating target area, then mesh parameter a and the b calculating process for generally investigating target area is as follows：If
The grid lower-left angular coordinate for setting the generaI investigation target area again is (- a ,-b), and upper right angular coordinate is (a, b), then in-line three
The mesh coordinate (x, y) of dimension electrical prospecting supply terminals position is set to：
X, y, a, i wherein in formula (2) are integer；
The rule according to more than, show that to generally investigate the central point of target area be origin, in-line three-dimensional electrical prospecting supply terminals position
Actual relative coordinate (the X for puttingC,YC) formula is as follows：
(XC,YC)=(x × c, y × d)=(x × c, 0) (3)
X, y wherein in formula (3) are the result of calculation of above formula (2).
Wherein in step (3) groined type three-dimensional electrical prospecting method concrete meaning be：Surveyed based on three-dimensional Electrical Survey
Detailed survey target area exploration targets body characteristicses, topography and geomorphology relief feature that the spy stage provides, arrange that the electrical prospecting of groined type is powered
Point, is powered by the electrode of supply terminals using electrical prospecting emitter to underground, receives many simultaneously using electrical prospecting receiver
The electric field signal of each measurement point in bar exploration line, asks for the apparent resistivity of each measurement point when each supply terminals is powered, swashs electricity
Parameter, realizes groined type three-dimensional electrical prospecting method.
Groined type three-dimensional electrical prospecting method is concretely comprised the following steps：
The early stage Geological Achievements of the detailed survey target area that a, look-ahead analysis three-dimensional Electrical Survey exploration are provided, infer in area mainly
The trend or major axes orientation of matter anomalous body, perpendicular to trend or the X-direction of major axes orientation setting groined type three-dimensional electrical prospecting, put down
In trend or the Y-direction of major axes orientation setting groined type three-dimensional electrical prospecting, wherein X is mutually perpendicular to row with Y-direction, and is water
Square to；
B, according to exploration require, determine the X of detailed survey target area and the exploration length of Y-direction, and determine measurement point spacing g and Y
The numerical value of orientation measurement point spacing h, so that it is determined that the numerical value of detailed survey target area mesh parameter e and f；Exploration mesh based on detailed survey target area
Standard type feature, topography and geomorphology relief feature, electrical prospecting supply terminals mesh coordinate (x, y) and actual relative seat using groined type
Mark (XC,YC) computation rule, determine the groined type three-dimensional all supply terminals mesh coordinates (Jx, Jy) of electrical prospecting and relative coordinate
(JXC,JYC), and arrange supply terminals；
C, the exploration targets body characteristicses based on detailed survey target area, topography and geomorphology relief feature, are required according to exploration and X-direction is surveyed
Amount point spacing g, Y-direction measurement point spacing h, the numerical value of mesh parameter e and f, arrange complete three-dimensional electrical prospecting measurement point；
D, each supply terminals on above-mentioned selected groined type three-dimensional electrical prospecting supply lines are powered respectively, using more logical
The groined type three-dimensional electrical prospecting measurement point of road electrical prospecting measuring system or multiple electrical prospecting measuring system to detailed survey target area
Electrical method data acquisition is carried out, the groined type three-dimensional electrical prospecting of all measurement points in detailed survey target area when each supply terminals is powered is got
Data；
A, all electrical prospecting measurement data are integrated into groined type three-dimensional electrical prospecting data, carry out the three-dimensional electricity of groined type
Method data processing, obtains the groined type three-dimensional electrical prospecting achievement of detailed survey target area, so as to the groined type for realizing detailed survey target area is three-dimensional
Electrical prospecting.
The numerical value of mesh parameter e and f wherein in groined type three-dimensional electrical prospecting method specific steps (b), groined type
Electrical prospecting supply terminals mesh coordinate (Jx, Jy) and actual relative coordinate (JXC,JYC) concrete meaning of computation rule is：
If detailed survey target area X-direction is long O meters, Y-direction is long P meters, and X-direction measurement point spacing is g meters, Y-direction measurement point spacing
It it is h meters, as origin, then mesh parameter e and the f calculating process of detailed survey target area is as follows for the central point with detailed survey target area：
The grid lower-left angular coordinate for setting the detailed survey target area again is (- e ,-f), and upper right angular coordinate is (e, f), then groined type three
The mesh coordinate (Jx, Jy) of dimension electrical prospecting supply terminals position is set to：
X, y, e, f, i, j wherein in formula (5) and formula (6) are integer；
Rule, draws the central point with detailed survey target area as origin according to more than, groined type three-dimensional electrical prospecting supply terminals position
Actual relative coordinate (the JX for puttingC,JYC) formula is as follows：
(JXC,JYC)=(Jx × g, Jy × h) (7)
Jx, Jy wherein in formula (7) are formula (5) and the result of calculation of (6).
Flexibility of the comprehensive electrical prospecting method proposed by the present invention based on two-dimentional electrical prospecting is strong, the advantage of efficiency high,
The two-dimentional electrical prospecting of selection is the exploitation method of electrical method constituency exploration phase, reduces target exploration scope, is the three-dimensional electricity of in-line
Method exploration provides generaI investigation target area；Efficiency high based on in-line three-dimensional electrical prospecting, the advantage for having three-dimensional exploration results, further
The exploration context of generaI investigation target area is reduced, for groined type three-dimensional electrical prospecting provides detailed survey target area；By fineness well word higher
Shape three-dimensional electrical prospecting, realizes reducing detailed survey target area exploration context, so as to obtain the specific target position of later stage exploration checking engineering.It is logical
The combination of the above method is crossed, so as to realize that high efficiency reduces Exploration targets scope, high accuracy provides the specific target position of checking engineering
Purpose.
The area border few caused obvious Boundary Effect problem of measuring point data amount is surveyed to reduce, the present invention is proposed in-line
Expanded to the supply terminals of groined type three-dimensional electrical prospecting and surveyed beyond area, the data volume of area border measuring point is surveyed to increase, so that
The surveying accuracy reduction that its boundary effect causes is reduced as far as possible.To balance the exploration effects and operating efficiency of this method, survey outside area
Supply terminals interval compare spacing using 2 times etc..
Brief description of the drawings
Fig. 1 is a kind of comprehensive electrical prospecting method workflow schematic diagram of the invention；
Fig. 2 is in-line of the invention three-dimensional electrical prospecting field arrangement schematic diagram；
Fig. 3 is groined type of the invention three-dimensional electrical prospecting field arrangement schematic diagram.
Specific embodiment
Below in conjunction with Fig. 1, Fig. 2, Fig. 3 and embodiment, the present invention will be further described, and Electrical Survey is surveyed in below illustrating
The spy stage is powered-monopole measurement apparatus from in-line three-dimensional electrical prospecting monopole, and the electrical method detailed survey exploration phase selects groined type
Three-dimensional electrical prospecting monopole is powered-monopole measurement apparatus.
The completely compatible existing electrical exploration equipment at present of electric power system and measuring system energy of this method, and measuring system
Can be using multichannel electrical prospecting measuring system or many set electrical prospecting measuring systems.
Embodiment 1
In Fig. 2, Fig. 31 is infinity current electrode, and 2 is infinity supply lines, and 3 is electrical prospecting emitter, and 4 is company
The supply lines of exploration area supply terminals is connect, the cross symbol of 5 meanings moves the supply terminals of power pole for electrical prospecting, 6 meanings
Circle symbol is the measurement point of electrical prospecting measuring electrode, part supply terminals and measurement point location overlap.
The specific embodiment step of comprehensive electrical prospecting method is following (referring to Fig. 1)：
(1) the early stage Geological Achievements of look-ahead analysis exploration area, are required and target based on exploration, select conventional two-dimentional electrical method
Exploitation method, carries out two-dimentional electrical method constituency exploration, for the follow-up Electrical Survey exploration phase provides generaI investigation target area；
(2) based on the generaI investigation target area that the two-dimentional electrical method constituency exploration phase is selected, selection in-line three-dimensional electrical prospecting method
As the method for Electrical Survey exploration phase, carry out in-line three-dimensional Electrical Survey exploration, be the follow-up electrical method detailed survey exploration phase
There is provided scope smaller detailed survey target area；
(3) based on the detailed survey target area that the three-dimensional Electrical Survey exploration phase is selected, selection groined type three-dimensional electrical prospecting method,
Carry out the exploration of subtle three-dimensional electrical method detailed survey, for follow-up exploration checking engineering provides precision checking target position higher.
Based on the generaI investigation target area that the two-dimentional electrical method constituency exploration phase provides, carry out in-line three-dimensional Electrical Survey exploration, it is false
If the generaI investigation target area X-direction that two-dimentional electrical prospecting is provided is long L=400 meters, Y-direction is long M=400 meters, X-direction measurement point spacing c
=40 meters, d=40 meters of Y-direction measurement point spacing, then according to formula (1)
Try to achieve a=5, b=5, then the grid lower-left angular coordinate of the generaI investigation target area be (- 5, -5), upper right angular coordinate for (5,
5)。
According to formula (2)
A, b numerical value are substituted into, the mesh coordinate (x, y) for trying to achieve in-line three-dimensional electrical prospecting supply terminals position is
X, y, i wherein in formula (8) are integer.
According to obtained as above, draw to generally investigate the central point of target area as the in-line three-dimensional electrical prospecting supply terminals position of origin
Actual relative coordinate (the X for puttingC,YC) be：
(XC,YC)=(x × 40, y × 40) (9)
X, y wherein in formula (9) are the result of calculation of above formula (8).
Result of calculation according to more than, in-line three-dimensional electrical prospecting monopole is powered the-concrete operations of monopole metering system
Step is following (referring to Fig. 2)：
A, the early stage Geological Achievements of analytical survey target area, infer the trend or major axes orientation of main geologic anomalous body in area,
Perpendicular to trend or the X-direction of major axes orientation setting in-line three-dimensional electrical prospecting, parallel to trend or major axes orientation setting one
The Y-direction of font three-dimensional electrical prospecting, wherein X is mutually perpendicular to Y-direction, and is horizontal direction；
B, the in-line asked for according to more than three-dimensional electrical prospecting supply terminals mesh coordinate (x, y) and actual relative coordinate
(XC,YC), and combine generaI investigation target area actual conditions, the mobile current electrode on generaI investigation target area and periphery reasonable Arrangement supply lines
Supply terminals 5；
C, according to electrical prospecting principle and require to select infinity supply terminals generaI investigation target area is outer, and lay infinity to power
Electrode 1 and current supply line 2；
The d, (A as shown in Figure 2 of supply terminals 5 for selecting some in-line three-dimensional electrical prospecting movement current electrode-13) cloth
If mobile current electrode and current supply line 4；
E, according to electrical prospecting principle and require to select electrical prospecting infinity measurement point generaI investigation target area is outer, and lay nothing
Poor remote measuring electrode and wire；
F, in generaI investigation target area by network style arrange the measurement point 6 of all three-dimensional electrical prospecting measuring electrodes and arrange survey
Amount electrode and wire；
G, by electrical prospecting emitter 3 to the supply terminals 5 of infinity current electrode 1 and mobile current electrode (such as Fig. 2 institutes
The A for showing-13) power supply, power supply current value is recorded, record the supply terminals and supply using multichannel or many set electrical prospecting measuring systems
Electrical method data when electric in exploration area between the measurement point 6 and infinity measuring electrode of each measuring electrode, it is to be collected to finish,
Then notify that electric power system changes the position (A as shown in Figure 2 of the supply terminals 5 of mobile current electrode-9、A-7、A-5、A-4、……
A13), above-mentioned electrical method data acquisition is repeated, until the supply terminals 5 for having gathered each movement current electrode is all when powering
The electrical method data of the measurement point 6 of measuring electrode；
H, get above-mentioned all in-lines three-dimensional electrical prospecting supply terminals, the electrical prospecting of all electrical prospecting measurement points
After data, the apparent resistivity of in-line three-dimensional electrical prospecting is asked for or regarding the electrical method parameter such as sharp electricity, processed by later data, obtain
In-line three-dimensional electrical prospecting achievement required for getting, for the follow-up electrical method detailed survey exploration phase provides detailed survey target area.
Based on the detailed survey target area that the in-line three-dimensional Electrical Survey exploration phase provides, carry out groined type three-dimensional electrical method detailed survey and survey
Visit, it is assumed that the detailed survey target area X-direction that in-line three-dimensional Electrical Survey exploration is provided is long O=100 meters, and Y-direction is long P=100 meters, X
G=10 meters of orientation measurement point spacing, h=10 meters of Y-direction measurement point spacing, then according to formula (4)
Try to achieve e=5, f=5, then the grid lower-left angular coordinate of the detailed survey target area be (- 5, -5), upper right angular coordinate for (5,
5)。
According to formula (5) and (6)
E, f numerical value are substituted into, the mesh coordinate (Jx, Jy) for trying to achieve groined type three-dimensional electrical prospecting supply terminals position is
X, y, i, j wherein in formula (10) and formula (11) are integer.
According to obtained as above, the groined type three-dimensional electrical prospecting supply terminals position with detailed survey target area central point as origin is drawn
Actual relative coordinate (JXC,JYC) be：
(JXC,JYC)=(Jx × 10, Jy × 10) (12)
Jx, Jy wherein in formula (12) are above formula (10) and the result of calculation of (11).
Result of calculation according to more than, groined type three-dimensional electrical prospecting monopole is powered the-concrete operations of monopole metering system
Step is following (referring to Fig. 3)：
A, the early stage Geological Achievements of analysis detailed survey target area, infer the trend or major axes orientation of main geologic anomalous body in area,
The trend of vertical main geologic anomalous body or the X-direction of major axes orientation setting groined type three-dimensional electrical prospecting, parallel main geologic
The Y-direction of trend or major axes orientation the setting groined type three-dimensional electrical prospecting of anomalous body, wherein X is mutually perpendicular to Y-direction, and
It is horizontal direction；
B, the groined type asked for according to more than three-dimensional electrical prospecting supply terminals mesh coordinate (Jx, Jy) and actual relative coordinate
(JXC,JYC), and detailed survey target area actual conditions are combined, the mobile power supply electricity on detailed survey target area and periphery reasonable Arrangement supply lines
The supply terminals 5 of pole；
C, outside detailed survey target area according to electrical prospecting principle and selection infinity supply terminals is required, and lay infinity and power
Electrode 1 and current supply line 2；
D, select some groined type three-dimensional electrical prospecting movement current electrode supply terminals 5 it is (as shown in Figure 3
XA(-13,2)) lay mobile current electrode and current supply line 4；
E, outside exploration area according to electrical prospecting principle and selection electrical prospecting infinity measurement point is required, and laid infinite
Remote measuring electrode and wire；
F, in exploration area by network style arrange the measurement point 6 of all groined types three-dimensional electrical prospecting measuring electrodes and lead
Line；
G, by electrical prospecting emitter 3 to the supply terminals 5 of infinity current electrode 1 and mobile current electrode (such as Fig. 3 institutes
The XA for showing(-13,2)) power supply, power supply current value is recorded, the power supply is recorded using multichannel or many set electrical prospecting measuring systems
Electrical method data during point power supply in exploration area between the measurement point 6 and infinity measuring electrode of each measuring electrode, it is to be collected
Finish, then notify that electric power system changes the position of the supply terminals 5 (XA as shown in Figure 3 of mobile current electrode(-9,2)、XA(-7,2)、
XA(-5,2)、XA(-4,2)、……YA(2,5)、YA(2,7)、YA(2,9)、YA(2,13)Deng), above-mentioned electrical method data acquisition is repeated, directly
To the electrical method data for having gathered all measurement points when each supply terminals is powered；
H, get above-mentioned all groined types three-dimensional electrical prospecting supply terminals, the electrical prospecting of all electrical prospecting measurement points
After data, the apparent resistivity of groined type three-dimensional electrical prospecting is asked for or regarding the electrical method parameter such as sharp electricity, processed by later data, obtain
Groined type three-dimensional electrical prospecting achievement required for getting, for follow-up exploration checking engineering provides precision checking target higher
Position.
Claims (5)
1. a kind of comprehensive electrical prospecting method, it is characterised in that：Exploration targets body characteristicses, topography and geomorphology based on electrical prospecting area
Relief feature, exploration targets and requirement, in the electrical method constituency exploration phase using conventional two-dimentional electrical prospecting, obtain electrical prospecting
GeneraI investigation target area；In the Electrical Survey exploration phase using exploration efficiency in-line three-dimensional electrical prospecting method high, obtain electrical method and survey
Visit detailed survey target area；In the electrical method detailed survey exploration phase using the excellent groined type three-dimensional electrical prospecting method of exploration effects, exploration is obtained
The target position of engineering is verified, it is concretely comprised the following steps：
(1) the early stage Geological Achievements of look-ahead analysis exploration area, exploration targets body characteristicses, topography and geomorphology based on electrical prospecting area rise
Volt is levied, exploration targets and requirement, selects conventional two-dimentional electrical prospecting method, carries out two-dimentional electrical method constituency exploration, is follow-up
The Electrical Survey exploration phase provides generaI investigation target area；
(2) based on the generaI investigation target area that the two-dimentional electrical method constituency exploration phase provides, selection in-line three-dimensional electrical prospecting method is carried out
Exploration efficiency three-dimensional Electrical Survey exploration high provides detailed survey target area for the follow-up electrical method detailed survey exploration phase；
(3) based on the detailed survey target area that the three-dimensional Electrical Survey exploration phase provides, selection groined type three-dimensional electrical prospecting method is carried out
The excellent three-dimensional electrical method detailed survey exploration of exploration effects；For follow-up exploration checking engineering provides precision checking target position higher.
2. a kind of comprehensive electrical prospecting method as claimed in claim 1, it is characterised in that：In-line in step (2) is three-dimensional
The concrete meaning of electrical prospecting method is：The exploration targets body characteristicses of the generaI investigation target area provided based on the exploration of two-dimentional electrical method constituency,
Topography and geomorphology relief feature, arranges the electrical prospecting supply terminals of in-line, the electricity for passing through supply terminals using electrical prospecting emitter
Pole powers to underground, receives the electric field signal of each measurement point in three-dimensional exploration area simultaneously using electrical prospecting receiver, asks for
The apparent resistivity of each measurement point, parameters of electrical induction when each supply terminals is powered, realize in-line three-dimensional electrical prospecting method；One word
Shape three-dimensional electrical prospecting method is concretely comprised the following steps：
A, look-ahead analysis generally investigate the early stage Geological Achievements of target area, infer the trend or major axes orientation of main geologic anomalous body in area,
Perpendicular to trend or the X-direction of major axes orientation setting in-line three-dimensional electrical prospecting, parallel to trend or major axes orientation setting one
The Y-direction of font three-dimensional electrical prospecting, wherein X is mutually perpendicular to Y-direction, and is horizontal direction；
B, required according to exploration, it is determined that the exploration length of X and the Y-direction of generaI investigation target area, and determine X-direction measurement point spacing c and Y
The numerical value of orientation measurement point spacing d, so that it is determined that the numerical value of generaI investigation target area mesh parameter a and b；Exploration mesh based on generaI investigation target area
Standard type feature, topography and geomorphology relief feature, electrical prospecting supply terminals mesh coordinate (x, y) and actual relative seat using in-line
Mark (XC,YC) computation rule, determine the in-line three-dimensional all supply terminals mesh coordinates (x, y) of electrical prospecting and relative coordinate (XC,
YC), and arrange supply terminals；
C, exploration targets body characteristicses, topography and geomorphology relief feature based on generaI investigation target area, require and X-direction measurement point according to exploration
Spacing c, Y-direction measurement point spacing d, the numerical value of mesh parameter a and b, arrange complete three-dimensional electrical prospecting measurement point；
D, each supply terminals on above-mentioned selected in-line three-dimensional electrical prospecting supply lines are powered respectively, using multichannel electricity
Method Reconnaissance Survey system or multiple electrical prospecting measuring systems are carried out to the in-line three-dimensional electrical prospecting measurement point for generally investigating target area
Electrical method data acquisition, gets the in-line three-dimensional electrical prospecting number that all measurement points in target area are generally investigated when each supply terminals is powered
According to；
E, all electrical prospecting measurement data are integrated into in-line three-dimensional electrical prospecting data, carry out in-line three-dimensional electrical method number
According to treatment, the in-line three-dimensional electrical prospecting achievement of generaI investigation target area is obtained, so as to realize generally investigating the in-line three-dimensional electrical method of target area
Exploration.
3. synthesis electrical prospecting method as claimed in claim 1 or 2, it is characterised in that：In-line three-dimensional electrical prospecting method
Electrical prospecting supply terminals mesh coordinate (x, y) of the numerical value, in-line of mesh parameter a and b in specific steps (b) and actual phase
To coordinate (XC,YC) concrete meaning of computation rule is：
If generaI investigation target area X-direction is long L meters, Y-direction is long M meters, and X-direction measurement point spacing is c meters, and Y-direction measurement point spacing is d
Rice, is origin with the central point for generally investigating target area, then mesh parameter a and the b calculating process for generally investigating target area is as follows：
The grid lower-left angular coordinate for setting the generaI investigation target area again is (- a ,-b), and upper right angular coordinate is (a, b), then the three-dimensional electricity of in-line
The mesh coordinate (x, y) of method exploration supply terminals position is set to：
X, y, a, i wherein in formula (2) are integer；
The rule according to more than, show that to generally investigate the central point of target area be origin, in-line three-dimensional electrical prospecting supply terminals position
Actual relative coordinate (XC,YC) formula is as follows：
(XC,YC)=(x × c, y × d)=(x × c, 0) (3)
X, y wherein in formula (3) are the result of calculation of formula (2).
4. synthesis electrical prospecting method as claimed in claim 1, it is characterised in that：Groined type three-dimensional electrical method in step (3)
The concrete meaning of exploitation method is：The detailed survey target area exploration targets body characteristicses that are there is provided based on the three-dimensional Electrical Survey exploration phase,
Shape morphologic prominence feature, arranges the electrical prospecting supply terminals of groined type, the electrode for passing through supply terminals using electrical prospecting emitter
Powered to underground, receive the electric field signal of each measurement point in a plurality of exploration line simultaneously using electrical prospecting receiver, asked for every
The apparent resistivity of each measurement point, parameters of electrical induction when individual supply terminals is powered, realize groined type three-dimensional electrical prospecting method；Groined type
Three-dimensional electrical prospecting method is concretely comprised the following steps：
The early stage Geological Achievements of the detailed survey target area that a, look-ahead analysis three-dimensional Electrical Survey exploration are provided, infer that main geologic is different in area
The trend or major axes orientation of normal body, the X-direction of groined type three-dimensional electrical prospecting is set perpendicular to trend or major axes orientation, parallel to
Trend or the Y-direction of major axes orientation setting groined type three-dimensional electrical prospecting, wherein X is mutually perpendicular to Y-direction, and is level side
To；
B, according to exploration require, determine the X of detailed survey target area and the exploration length of Y-direction, and determine measurement point spacing g and Y-direction
The numerical value of measurement point spacing h, so that it is determined that the numerical value of detailed survey target area mesh parameter e and f；Exploration targets body based on detailed survey target area
Feature, topography and geomorphology relief feature, using electrical prospecting supply terminals mesh coordinate (Jx, Jy) of groined type and actual relative coordinate
(JXC,JYC) computation rule, determine the groined type three-dimensional all supply terminals mesh coordinates (Jx, Jy) of electrical prospecting and relative coordinate
(JXC,JYC), and arrange supply terminals；
C, the exploration targets body characteristicses based on detailed survey target area, topography and geomorphology relief feature, require and X-direction measurement point according to exploration
Spacing g, Y-direction measurement point spacing h, the numerical value of mesh parameter e and f, arrange complete three-dimensional electrical prospecting measurement point；
D, each supply terminals on above-mentioned selected groined type three-dimensional electrical prospecting supply lines are powered respectively, using multichannel electricity
Method Reconnaissance Survey system or multiple electrical prospecting measuring systems are carried out to the groined type three-dimensional electrical prospecting measurement point of detailed survey target area
Electrical method data acquisition, gets the groined type three-dimensional electrical prospecting number of all measurement points in detailed survey target area when each supply terminals is powered
According to；
E, all electrical prospecting measurement data are integrated into groined type three-dimensional electrical prospecting data, carry out groined type three-dimensional electrical method number
According to treatment, the groined type three-dimensional electrical prospecting achievement of detailed survey target area is obtained, so as to realize the groined type three-dimensional electrical method of detailed survey target area
Exploration.
5. synthesis electrical prospecting method as claimed in claim 4, it is characterised in that：Groined type three-dimensional electrical prospecting method is specific
The numerical value of mesh parameter e and f in step (b), electrical prospecting supply terminals mesh coordinate (Jx, Jy) of groined type and reality are relative
Coordinate (JXC,JYC) concrete meaning of computation rule is：
If detailed survey target area X-direction is long O meters, Y-direction is long P meters, and X-direction measurement point spacing is g meters, and Y-direction measurement point spacing is h
Rice, as origin, then mesh parameter e and the f calculating process of detailed survey target area is as follows for the central point with detailed survey target area：
The grid lower-left angular coordinate for setting the detailed survey target area again is (- e ,-f), and upper right angular coordinate is (e, f), then the three-dimensional electricity of groined type
The mesh coordinate (Jx, Jy) of method exploration supply terminals position is set to：
X, y, e, f, i, j wherein in formula (5) and (6) are integer；
Rule, draws the central point with detailed survey target area as origin according to more than, groined type three-dimensional electrical prospecting supply terminals position
Actual relative coordinate (JXC,JYC) formula is as follows：
(JXC,JYC)=(Jx × g, Jy × h) (7)
Jx, Jy wherein in formula (7) are formula (5) and the result of calculation of (6).
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