CN106842332B - A kind of comprehensive electrical prospecting method - Google Patents
A kind of comprehensive electrical prospecting method Download PDFInfo
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- CN106842332B CN106842332B CN201611213017.0A CN201611213017A CN106842332B CN 106842332 B CN106842332 B CN 106842332B CN 201611213017 A CN201611213017 A CN 201611213017A CN 106842332 B CN106842332 B CN 106842332B
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Abstract
A kind of comprehensive electrical prospecting method, it is of the invention the specific steps are：Exploration targets body characteristics, 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 the high linear type three-dimensional electrical prospecting method of exploration efficiency, 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, play groined type three-dimensional electrical prospecting method exploration effects it is excellent the advantages of, obtain the target position of exploration verification engineering.The advantages of comprehensive electrical prospecting method proposed by the present invention fully excavates distinct methods targetedly selects different electrical prospecting methods in the different electrical prospecting stages, so as to fulfill high efficiency, accurately solves the problems, such as that Exploration targets and target position determine.
Description
Technical field
The present invention relates to a kind of synthesis electrical prospecting methods 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 explore 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 this method
There are a good exploration effects, but only used on a small quantity in the case where partly very crucial exploration area 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
According to the data of every exploration line are individually handled as 2-D data in processing procedure, since practical exploration area is seldom deposited
It is more three-dimensional geological anomalous body in true two-dimentional geological anomalous body, therefore two-dimentional electrical prospecting achievement is approximate achievement,
It is poor so as to cause its exploration effects.But since two-dimentional electrical prospecting is only powered on the supply terminals of an exploration line, same
Carry out the acquisition of electrical method data in exploration line, exploration efficiency is higher, and exploration effects are better than one-dimensional, therefore is currently used electrical method
Exploitation method.But due to every exploration line of this method be required to arrangement electric power system, cause arrange electric power system workload compared with
Greatly；It often arranges that a supply lines is only capable of measuring a measurement line, if exploration area is with a varied topography, vegetation development, can cause to be difficult to
Even can not arrange supply lines, so as to cause two-dimentional electrical prospecting can not carry out as a result, limiting this method in complicated landform
Application.
Completeness three-dimensional electrical prospecting method is respectively powered once to the supply terminals of entire exploration area, and each power supply
During point power supply, all measurement point gathered datas to entire exploration area are needed.This method is the geological anomalous body in practical exploration area
Consider as three-dimensional geological anomalous body, more meet practical geological condition.But due to the supply terminals of completeness three-dimensional electrical prospecting
It needs to cover entire three-dimensional electrical prospecting measurement point, the quantity of supply terminals is equal to measurement point quantity, needs in entire exploration area
All supply terminals powered respectively, needed during power supply to all measurement point gathered datas in entire exploration area every time, by
It is excessive in supply terminals quantity, it is multiplied so as to cause workload.
Completeness three-dimensional electrical prospecting data volume and workload are much larger than two-dimentional electrical prospecting, so as to cause in practical exploration
It needs to put into a large amount of human and material resources and time in the process, efficiency is low, of high cost.In addition, in the wild in practical exploration process,
Due to three-dimensional electrical prospecting heavy workload, it is difficult to the workload of entire exploration area was completed within one day, once it needs complete across day
Into, then be required to arrange and recycle the electric power system and measuring system of entire 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.Moreover, because the electrical prospecting of completeness three-dimensional for
The landform requirement in ground observation area is high, if with a varied topography, vegetation development, to 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 apparent advantage in effect and precision, since its efficiency is too low, cost is excessively high, and landform was required
Height, so as to cause seldom being used in this method in the wild practical investigation and prospecting.
Based on the shortcomings that completeness three-dimensional electrical prospecting efficiency is very low, applicability is not strong, someone has studied cross at present
Intersect the three-dimensional electrical prospecting method with Γ shapes arrangement measuring electrode.Its starting point is by reducing the electrical method gathered data of measurement point
Amount is realized and reduces field work amount, achievees the purpose that improve 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 three-dimensional electrical prospecting there is still a need for covering, entirely to survey by three-dimensional electrical method
Visit measurement point, the quantity of supply terminals is equal to measurement point quantity, since supply terminals quantity is excessive, and at present power supply technique using
Timesharing branch is powered, and is only capable of powering to a supply terminals every time, can not be reduced so as to cause the workload of electric power system.This method
Selected section measurement point acquires electrical method data when powering only with some supply terminals, but to complete number during all supply terminals power supplies
According to collecting work, the entire each measurement point in exploration area is required to arrange, only during certain supply terminals power supplies, has part measurement point not
Electrical method data are acquired, are not reduced the physical points arrangement of measurement point.Therefore above-mentioned cruciform shape and Γ shape three-dimensional electrical prospecting
Method increases relative to the exploration efficiency of completeness three-dimensional electrical prospecting method, but reduces some supply terminals by then passing through
Measured electrical method data during power supply, it is still necessary to which time sharing power supply is carried out, and need to arrange to all supply terminals of entire exploration area
The physical points of entire exploration area measurement point, therefore its exploration efficiency improves unobvious.
The section and sounding method mainly using two-dimentional electrical prospecting in terms of comprehensive electrical prospecting carry out exploration area at present
Constituency and target position determine, then in the case where the conditions such as funds meet on a small quantity using completeness or cruciform shape or Γ shapes three-dimensional
The geological condition of target position is verified in electrical prospecting, when conditions are unsatisfactory for, is then surveyed once in funds only with two-dimentional electrical method
It visits achievement and carries out the last determining of target position.It, can be by if the comprehensive electrical prospecting mode of this kind only selects two dimension electrical prospecting achievement
Three-dimensional geologic according to two-dimentional geologic body is treated in two-dimentional electrical prospecting, influences its surveying accuracy, it is possible to cause subsequently to survey
It visits verification project failure or increases quantities；If two-dimentional electrical prospecting and conventional three-dimensional electrical prospecting is selected to carry out integrated exploration,
Then since conventional three-dimensional electrical prospecting exploration efficiency is low, exploration cost is caused to increase, exploration cycle extend the problems such as.
Invention content
The purpose of the present invention is based on the basis that two-dimentional electrical prospecting is efficient, three-dimensional electrical prospecting precision and effect are excellent
On, it proposes a kind of comprehensive electrical prospecting method, realizes high efficiency, accurately solves the problems, such as that Exploration targets and target position determine.
This method is the exploration targets body characteristics 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
The advantages of, obtain electrical prospecting generaI investigation target area；In the Electrical Survey exploration phase using simple three-dimensional electrical prospecting method, play
The advantages of exploration effects of simple three-dimensional electrical prospecting method are good, efficient, obtains 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 verification engineering.Comprehensive electrical prospecting method proposed by the present invention fully excavates the excellent of distinct methods
Point targetedly selects different electrical prospecting methods in the different electrical prospecting stages.
A kind of comprehensive electrical prospecting method proposed by the present invention the specific steps are：
(1) Geological Achievements early period of look-ahead analysis exploration area, exploration targets body characteristics, landform based on electrical prospecting area
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, linear type three-dimensional electrical prospecting method is selected
Carry out simple three-dimensional Electrical Survey exploration, detailed survey target area is provided 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, groined type three-dimensional electrical prospecting method is selected,
Carry out fine three-dimensional electrical method detailed survey exploration, provide precision higher verification target position for follow-up exploration verification engineering.
The concrete meaning of linear type three-dimensional electrical prospecting method wherein in step (2) is：It is surveyed based on two-dimentional electrical method constituency
Exploration targets body characteristics, the topography and geomorphology relief feature of generaI investigation target area provided is provided, arranges the electrical prospecting supply terminals of linear type,
It is powered using electrical prospecting transmitter by the electrode of supply terminals to underground, a plurality of survey is received using electrical prospecting receiver simultaneously
The electric field signal of each measurement point on line is visited, asks for apparent resistivity, the parameters of electrical induction of each measurement point during each supply terminals power supply,
Realize linear type three-dimensional electrical prospecting method.
Linear type three-dimensional electrical prospecting method the specific steps are：
A, Geological Achievements early period of look-ahead analysis generaI investigation target area infer the trend or main shaft square of main geologic anomalous body in area
To, perpendicular to trend or major axes orientation setting linear type three-dimensional electrical prospecting X-direction, be parallel to trend or major axes orientation setting
The Y-direction of linear type three-dimensional electrical prospecting, wherein X are mutually perpendicular to Y-direction, and are horizontal direction；
B, it is required according to exploration, determines the X of generaI investigation target area and the exploration length of Y-direction, 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 characteristics, topography and geomorphology relief feature, electrical prospecting supply terminals mesh coordinate (x, y) and practical phase using linear type
To coordinate (XC,YC) computation rule, determine all supply terminals mesh coordinates (x, y) of linear type three-dimensional electrical prospecting and relative coordinate
(XC,YC), and arrange supply terminals；
C, exploration targets body characteristics, topography and geomorphology relief feature based on generaI investigation target area are surveyed according to exploration requirement and X-direction
The numerical value of point spacing c, Y-direction measurement point spacing d, mesh parameter a and b are measured, arranges complete three-dimensional electrical prospecting measurement point；
D, each supply terminals on above-mentioned selected linear type three-dimensional electrical prospecting supply lines is powered respectively, and use is mostly logical
Road electrical prospecting measuring system or multiple electrical prospecting measuring systems are to generally investigating the linear type three-dimensional electrical prospecting measurement point of target area
Electrical method data acquisition is carried out, gets the linear type three-dimensional electrical prospecting that all measurement points in target area are generally investigated during each supply terminals power supply
Data；
E, all electrical prospecting measurement data are integrated into linear type three-dimensional electrical prospecting data, carry out the three-dimensional electricity of linear type
Method data processing obtains the linear type three-dimensional electrical prospecting achievement of generaI investigation target area, and the linear type so as to fulfill generaI investigation target area is three-dimensional
Electrical prospecting；
The numerical value of mesh parameter a and b wherein in linear type three-dimensional electrical prospecting method specific steps (b), linear type
Electrical prospecting supply terminals mesh coordinate (x, y) and practical relative coordinate (XC,YC) concrete meaning of computation rule is：
If generally investigating, target area X-direction is L meters long, and Y-direction is M meters long, and X-direction measurement point spacing is c meters, Y-direction measurement point spacing
It it is d meters, using the central point for generally investigating target area as origin, then mesh parameter a and the b calculating process for generally investigating target area is as follows：If
The grid lower-left angular coordinate of the generaI investigation target area is set again as (- a ,-b), and upper right angular coordinate is (a, b), then linear type three
The mesh coordinate (x, y) of dimension electrical prospecting supply terminals position is set as：
X, y, a, i wherein in formula (2) are integer；
It according to above rule, obtains using the central point for generally investigating target area as origin, linear type three-dimensional electrical prospecting supply terminals position
Practical relative coordinate (the X putC,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).
The concrete meaning of groined type three-dimensional electrical prospecting method wherein in step (3) is：It is surveyed based on three-dimensional Electrical Survey
Detailed survey target area exploration targets body characteristics, the topography and geomorphology relief feature of spy stage offer arrange the electrical prospecting power supply of groined type
Point is powered to underground by the electrode of supply terminals using electrical prospecting transmitter, is received simultaneously using electrical prospecting receiver more
The electric field signal of each measurement point in exploration line, the apparent resistivity of each measurement point when asking for each supply terminals power supply swash electricity
Parameter realizes groined type three-dimensional electrical prospecting method.
Groined type three-dimensional electrical prospecting method the specific steps are：
A, Geological Achievements early period of detailed survey target area that the exploration of look-ahead analysis three-dimensional Electrical Survey provides, 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, are put down
Row is mutually perpendicular to Y-direction in trend or the Y-direction of major axes orientation setting groined type three-dimensional electrical prospecting, wherein X, and is water
Square to；
B, it is required according to exploration, determines 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 practical opposite seat using groined type
Mark (XC,YC) computation rule, determine all supply terminals mesh coordinates (Jx, Jy) of groined type three-dimensional electrical prospecting and relative coordinate
(JXC,JYC), and arrange supply terminals；
C, the exploration targets body characteristics based on detailed survey target area, topography and geomorphology relief feature are surveyed according to exploration requirement and X-direction
The numerical value of point spacing g, Y-direction measurement point spacing h, mesh parameter e and f are measured, arranges complete three-dimensional electrical prospecting measurement point；
D, each supply terminals on above-mentioned selected groined type three-dimensional electrical prospecting supply lines is powered respectively, and use is mostly logical
Road electrical prospecting measuring system or multiple electrical prospecting measuring systems are to the groined type three-dimensional electrical prospecting measurement point of 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 getting each supply terminals power supply
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, three-dimensional so as to fulfill the groined type of detailed survey target area
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 practical relative coordinate (JXC,JYC) concrete meaning of computation rule is：
If detailed survey target area X-direction is O meters long, Y-direction is P meters long, and X-direction measurement point spacing is g meters, Y-direction measurement point spacing
It it is h meters, using the central point of detailed survey target area as origin, then mesh parameter e and the f calculating process of detailed survey target area is as follows：
The grid lower-left angular coordinate of the detailed survey target area is set again as (- 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 as：
X, y, e, f, i, j wherein in formula (5) and formula (6) are integer；
It according to above rule, obtains using the central point of detailed survey target area as origin, groined type three-dimensional electrical prospecting supply terminals position
Practical relative coordinate (the JX putC,JYC) formula is as follows：
(JXC,JYC)=(Jx × g, Jy × h) (7)
Jx, Jy wherein in formula (7) are the result of calculation of formula (5) and (6).
Strong, the efficient advantage of flexibility of the comprehensive electrical prospecting method based on two-dimentional electrical prospecting proposed by the present invention,
Exploitation method of the two-dimentional electrical prospecting for the electrical method constituency exploration phase is selected, reduces target exploration range, is the three-dimensional electricity of linear type
Method exploration provides generaI investigation target area；Advantage that is efficient, having three-dimensional exploration results based on linear type three-dimensional electrical prospecting, further
The exploration context of generaI investigation target area is reduced, detailed survey target area is provided for groined type three-dimensional electrical prospecting；Pass through the higher well word of fineness
Shape three-dimensional electrical prospecting is realized and reduces detailed survey target area exploration context, so as to obtain the specific target position of later stage exploration verification engineering.It is logical
The combination of the above method is crossed, reduces Exploration targets range so as to fulfill high efficiency, high-precision provides the specific target position of verification engineering
Purpose.
The few caused apparent Boundary Effect problem of area boundary measuring point data amount is surveyed to reduce, the present invention is proposed linear type
It expands to and is surveyed other than area with the supply terminals of groined type three-dimensional electrical prospecting, to increase the data volume for surveying area boundary measuring point, so as to
Surveying accuracy caused by reducing its boundary effect to the greatest extent reduces.To balance the exploration effects and working efficiency of this method, survey outside area
Supply terminals interval compare spacing using 2 times etc..
Description of the drawings
Fig. 1 is a kind of comprehensive electrical prospecting method workflow schematic diagram of the present invention；
Schematic diagram is arranged in the linear type three-dimensional electrical prospecting field that Fig. 2 is the present invention；
Schematic diagram is arranged in the groined type three-dimensional electrical prospecting field that Fig. 3 is the present invention.
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 illustrating below
The spy stage selects linear type three-dimensional electrical prospecting monopole power supply-monopole measuring device, and the electrical method detailed survey exploration phase selects groined type
Three-dimensional electrical prospecting monopole power supply-monopole measuring device.
The electric power system and measuring system of this method can completely compatible existing electrical exploration equipments, and measuring system at present
It can be using multichannel electrical prospecting measuring system or more set electrical prospecting measuring systems.
Embodiment 1
1 in Fig. 2, Fig. 3 is infinity current electrode, and 2 be infinity supply lines, and 3 be electrical prospecting transmitter, and 4 is connect
The supply lines of exploration area supply terminals is connect, 5 signified cross symbols move the supply terminals of power pole for electrical prospecting, 6 meanings
Circle symbol is the measurement point of electrical prospecting measuring electrode, and part supply terminals is Chong Die with measurement point position.
The specific embodiment step of comprehensive electrical prospecting method is following (with reference to figure 1)：
(1) Geological Achievements early period of look-ahead analysis exploration area based on exploration requirement and target, select conventional two-dimentional electrical method
Exploitation method, carries out two-dimentional electrical method constituency exploration, and generaI investigation target area is provided for the follow-up Electrical Survey exploration phase；
(2) based on the generaI investigation target area that the two-dimentional electrical method constituency exploration phase is selected, linear type three-dimensional electrical prospecting method is selected
As the method for Electrical Survey exploration phase, carry out the exploration of linear type three-dimensional Electrical Survey, be the follow-up electrical method detailed survey exploration phase
There is provided range smaller detailed survey target area；
(3) based on the detailed survey target area that the three-dimensional Electrical Survey exploration phase is selected, groined type three-dimensional electrical prospecting method is selected,
Carry out the exploration of subtle three-dimensional electrical method detailed survey, provide precision higher verification target position for follow-up exploration verification engineering.
Based on the generaI investigation target area that the two-dimentional electrical method constituency exploration phase provides, carry out the exploration of linear type three-dimensional Electrical Survey, it is false
If the generaI investigation target area X-direction that two-dimentional electrical prospecting provides is L=400 meters long, Y-direction is M=400 meters long, X-direction measurement point spacing c
=40 meters, d=40 meters of Y-direction measurement point spacing, then according to formula (1)
Acquire 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 acquiring linear type three-dimensional electrical prospecting supply terminals position is
X, y, i wherein in formula (8) are integer.
According to obtained as above, obtain to generally investigate linear type three-dimensional electrical prospecting supply terminals position of the central point as origin of target area
Practical relative coordinate (the X putC,YC) be：
(XC,YC)=(x × 40, y × 40) (9)
X, y wherein in formula (9) are the result of calculation of above formula (8).
According to above result of calculation, the concrete operations of linear type three-dimensional electrical prospecting monopole power supply-monopole measurement method
Step is following (with reference to figure 2)：
A, Geological Achievements early period 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 linear type three-dimensional electrical prospecting, it is parallel to trend or major axes orientation setting one
The Y-direction of font three-dimensional electrical prospecting, wherein X are mutually perpendicular to Y-direction, and are horizontal direction；
B, according to the linear type three-dimensional electrical prospecting supply terminals mesh coordinate (x, y) and practical relative coordinate asked for above
(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 requirement selection infinity supply terminals outside generaI investigation target area, and infinity power supply is laid
Electrode 1 and current supply line 2；
D, (the A as shown in Figure 2 of supply terminals 5 of some linear type three-dimensional electrical prospecting movement current electrode is selected-13) cloth
If mobile current electrode and current supply line 4；
E, according to electrical prospecting principle and requirement selection electrical prospecting infinity measurement point outside generaI investigation target area, and nothing is laid
Poor remote measuring electrode and conducting wire；
F, the measurement point 6 of all three-dimensional electrical prospecting measuring electrodes is arranged by network style and arrange survey in generaI investigation target area
Measure electrode and conducting wire；
G, the supply terminals 5 of current electrode to infinity current electrode 1 and is moved (such as Fig. 2 institutes by electrical prospecting transmitter 3
The A shown-13) power supply, power supply current value is recorded, the supply terminals is recorded using multichannel or more set electrical prospecting measuring systems and supplies
Electrical method data when electric in exploration area between the measurement point 6 of each measuring electrode and infinity measuring electrode, it is to be collected to finish,
Electric power system is then notified to change 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 acquired each mobile current electrode owns when powering
The electrical method data of the measurement point 6 of measuring electrode；
H, the electrical prospecting of above-mentioned all linear type three-dimensional electrical prospecting supply terminals, all electrical prospecting measurement points is got
After data, ask for the apparent resistivity of linear type three-dimensional electrical prospecting or regarding the electrical methods parameter such as sharp electricity, handled, obtained by later data
Required linear type three-dimensional electrical prospecting achievement is got, detailed survey target area is provided for the subsequent electrical method detailed survey exploration phase.
Based on the detailed survey target area that the linear type three-dimensional Electrical Survey exploration phase provides, carry out groined type three-dimensional electrical method detailed survey and survey
It visits, it is assumed that the detailed survey target area X-direction that the exploration of linear type three-dimensional Electrical Survey provides is O=100 meters long, and Y-direction is P=100 meters long, X
G=10 meters of orientation measurement point spacing, h=10 meters of Y-direction measurement point spacing, then according to formula (4)
Acquire 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 acquiring 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 using detailed survey target area central point as origin is obtained
Practical 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).
According to above result of calculation, the concrete operations of groined type three-dimensional electrical prospecting monopole power supply-monopole measurement method
Step is following (with reference to figure 3)：
A, Geological Achievements early period 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 are mutually perpendicular to, and with Y-direction
For horizontal direction；
B, according to the groined type three-dimensional electrical prospecting supply terminals mesh coordinate (Jx, Jy) and practical relative coordinate asked for above
(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, according to electrical prospecting principle and requirement selection infinity supply terminals outside detailed survey target area, and infinity power supply is laid
Electrode 1 and current supply line 2；
D, the supply terminals 5 for selecting some groined type three-dimensional electrical prospecting movement current electrode is (as shown in Figure 3
XA(-13,2)) lay mobile current electrode and current supply line 4；
E, it according to electrical prospecting principle and requirement selection electrical prospecting infinity measurement point outside exploration area, and lays infinite
Remote measuring electrode and conducting wire；
F, the measurement point 6 of all groined type three-dimensional electrical prospecting measuring electrodes is arranged by network style and lead in exploration area
Line；
G, the supply terminals 5 of current electrode to infinity current electrode 1 and is moved (such as Fig. 3 institutes by electrical prospecting transmitter 3
The XA shown(-13,2)) power supply, power supply current value is recorded, which is recorded using multichannel or more set electrical prospecting measuring systems
Electrical method data during point power supply in exploration area between the measurement point 6 of each measuring electrode and infinity measuring electrode, it is to be collected
It finishes, then electric power system is notified to change 5 position of the supply terminals (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 of all measurement points when having acquired each supply terminals power supply；
H, the electrical prospecting of above-mentioned all groined type three-dimensional electrical prospecting supply terminals, all electrical prospecting measurement points is got
After data, ask for the apparent resistivity of groined type three-dimensional electrical prospecting or regarding the electrical methods parameter such as sharp electricity, handled, obtained by later data
Required groined type three-dimensional electrical prospecting achievement is got, provides precision higher verification target for subsequent exploration verification engineering
Position.
Claims (3)
1. a kind of comprehensive electrical prospecting method, it is characterised in that：Exploration targets body characteristics, 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
Generally investigate target area；In the Electrical Survey exploration phase using the high linear type three-dimensional electrical prospecting method of exploration efficiency, 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
Verify the target position of engineering, the specific steps are：
(1) Geological Achievements early period of look-ahead analysis exploration area, exploration targets body characteristics, topography and geomorphology based on electrical prospecting area rise
Volt sign, exploration targets and requirement, select conventional two-dimentional electrical prospecting method, carry out two-dimentional electrical method constituency exploration, are 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, linear type three-dimensional electrical prospecting method is selected to carry out
The high three-dimensional Electrical Survey of exploration efficiency is explored provides detailed survey target area for the follow-up electrical method detailed survey exploration phase；Linear type three-dimensional electrical method
The concrete meaning of exploitation method is：The exploration targets body characteristics of generaI investigation target area based on the exploration offer of two-dimentional electrical method constituency, landform
Morphologic prominence feature arranges the electrical prospecting supply terminals of linear type, using electrical prospecting transmitter by the electrode of supply terminals to
Underground powers, and receives the electric field signal of each measurement point in three-dimensional exploration area simultaneously using electrical prospecting receiver, asks for each
Apparent resistivity, the parameters of electrical induction of each measurement point when supply terminals is powered, realize linear type three-dimensional electrical prospecting method；Linear type three
Tie up electrical prospecting method the specific steps are：
A, Geological Achievements early period of look-ahead analysis generaI investigation 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 linear type three-dimensional electrical prospecting, it is parallel to trend or major axes orientation setting one
The Y-direction of font three-dimensional electrical prospecting, wherein X are mutually perpendicular to Y-direction, and are horizontal direction；
B, it is required according to exploration, determines the X of generaI investigation target area and the exploration length of Y-direction, 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 practical opposite seat using linear type
Mark (XC,YC) computation rule, determine all supply terminals mesh coordinates (x, y) of linear type three-dimensional electrical prospecting and relative coordinate (XC,
YC), and arrange supply terminals；
C, exploration targets body characteristics, topography and geomorphology relief feature based on generaI investigation target area, according to exploration requirement and X-direction measurement point
Spacing c, Y-direction measurement point spacing d, mesh parameter a and b numerical value, arrange complete three-dimensional electrical prospecting measurement point；
D, each supply terminals on selected linear type three-dimensional electrical prospecting supply lines is powered respectively, is surveyed using multichannel electrical method
It visits measuring system or multiple electrical prospecting measuring systems and electrical method is carried out to the linear type three-dimensional electrical prospecting measurement point for generally investigating target area
Data acquire, and get the linear type three-dimensional electrical prospecting data that all measurement points in target area are generally investigated during each supply terminals power supply；
E, all electrical prospecting measurement data are integrated into linear type three-dimensional electrical prospecting data, carry out linear type three-dimensional electrical method number
According to processing, the linear type three-dimensional electrical prospecting achievement of generaI investigation target area is obtained, so as to fulfill the linear type three-dimensional electrical method of generaI investigation target area
Exploration；
(3) based on the detailed survey target area that the three-dimensional Electrical Survey exploration phase provides, groined type three-dimensional electrical prospecting method is selected, is carried out
The excellent three-dimensional electrical method detailed survey exploration of exploration effects；There is provided precision higher verification target position subsequently to explore verification engineering；Groined type
The concrete meaning of three-dimensional electrical prospecting method is：The detailed survey target area exploration targets body provided based on the three-dimensional Electrical Survey exploration phase
Feature, topography and geomorphology relief feature, arrange the electrical prospecting supply terminals of groined type, pass through supply terminals using electrical prospecting transmitter
Electrode power to underground, receive the electric field signal of each measurement point in a plurality of exploration line simultaneously using electrical prospecting receiver,
Apparent resistivity, the parameters of electrical induction of each measurement point during each supply terminals power supply are asked for, realizes groined type three-dimensional electrical prospecting method；
Groined type three-dimensional electrical prospecting method the specific steps are：
A, Geological Achievements early period of detailed survey target area that the exploration of look-ahead analysis three-dimensional Electrical Survey provides infer that main geologic is different in area
The trend or major axes orientation of normal body perpendicular to trend or the X-direction of major axes orientation setting groined type three-dimensional electrical prospecting, are parallel to
Trend or the Y-direction of major axes orientation setting groined type three-dimensional electrical prospecting, wherein X are mutually perpendicular to Y-direction, and are level side
To；
B, it is required according to exploration, determines 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 the electrical prospecting supply terminals mesh coordinate (Jx, Jy) of groined type and practical relative coordinate
(JXC,JYC) computation rule, determine all supply terminals mesh coordinates (Jx, Jy) of groined type three-dimensional electrical prospecting and relative coordinate
(JXC,JYC), and arrange supply terminals；
C, the exploration targets body characteristics based on detailed survey target area, topography and geomorphology relief feature, according to exploration requirement and X-direction measurement point
Spacing g, Y-direction measurement point spacing h, mesh parameter e and f numerical value, arrange complete three-dimensional electrical prospecting measurement point；
D, each supply terminals on selected groined type three-dimensional electrical prospecting supply lines is powered respectively, is surveyed using multichannel electrical method
It visits measuring system or multiple electrical prospecting measuring systems and electrical method is carried out to the groined type three-dimensional electrical prospecting measurement point of detailed survey target area
Data acquire, the groined type three-dimensional electrical prospecting data of all measurement points in detailed survey target area when getting each supply terminals power supply；
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 processing, the groined type three-dimensional electrical prospecting achievement of detailed survey target area is obtained, so as to fulfill the groined type three-dimensional electrical method of detailed survey target area
Exploration.
2. comprehensive electrical prospecting method as described in claim 1, it is characterised in that：Linear type described in step (2) is three-dimensional
The numerical value of mesh parameter a and b in electrical prospecting method specific steps b, linear type electrical prospecting supply terminals mesh coordinate (x,
And practical relative coordinate (X y)C,YC) concrete meaning of computation rule is：
If generally investigating, target area X-direction is L meters long, and Y-direction is M meters long, and X-direction measurement point spacing is c meters, and Y-direction measurement point spacing is d
Rice, using the central point for generally investigating target area as origin, then mesh parameter a and the b calculating process for generally investigating target area is as follows：
The grid lower-left angular coordinate of the generaI investigation target area is set again as (- a ,-b), and upper right angular coordinate is (a, b), then the three-dimensional electricity of linear type
The mesh coordinate (x, y) of method exploration supply terminals position is set as：
X, y, a, i wherein in formula (2) are integer；
According to above rule, obtain using the central point for generally investigating target area as origin, linear type three-dimensional electrical prospecting supply terminals position
Practical 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).
3. comprehensive electrical prospecting method as described in claim 1, it is characterised in that：Groined type described in step (3) is three-dimensional
The numerical value of mesh parameter e and f in electrical prospecting method specific steps b, the electrical prospecting supply terminals mesh coordinate of groined type
(Jx, Jy) and practical relative coordinate (JXC,JYC) concrete meaning of computation rule is：
If detailed survey target area X-direction is O meters long, Y-direction is P meters long, and X-direction measurement point spacing is g meters, and Y-direction measurement point spacing is h
Rice, using the central point of detailed survey target area as origin, then mesh parameter e and the f calculating process of detailed survey target area is as follows：
The grid lower-left angular coordinate of the detailed survey target area is set again as (- 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 as：
X, y, e, f, i, j wherein in formula (5) and (6) are integer；
According to above rule, obtain using the central point of detailed survey target area as origin, groined type three-dimensional electrical prospecting supply terminals position
Practical relative coordinate (JXC,JYC) formula is as follows：
(JXC,JYC)=(Jx × g, Jy × h) (7)
Jx, Jy wherein in formula (7) are the result of calculation of formula (5) and (6).
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