Terrain and resistivity correction method and device of high-density electrical method and electronic equipment
By correcting the surface coordinates and initial apparent resistivity of the apparent resistivity point in high-density electrical exploration, the electric field distortion problem caused by undulating terrain is solved, the exploration accuracy and reliability are improved, and scientific engineering governance and decision-making basis are provided.
Patent Information
- Application Number
- CN202311772951.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-06-24
AI Technical Summary
In high-density electrical exploration, the undulation of the terrain leads to errors in the electric field distribution and apparent resistivity measurement results. The prior art is difficult to effectively correct the apparent resistivity value, which affects the exploration accuracy and reliability.
By obtaining the terrain data of the terrain to be surveyed, including the angle between the terrain line and the horizontal line, the coordinate correction and apparent resistivity correction methods are used to correct the surface coordinates and initial apparent resistivity of the visible resistivity point respectively to obtain the target coordinates and target apparent resistivity.
It effectively solved the problem of electric field distortion caused by terrain, obtained the true electrical characteristic reaction of the formation, improved the exploration effect of high-density electrical methods of undulating terrain, and provided a scientific basis for engineering governance and decision-making.
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Figure CN120195755A_ABST
Abstract
Description
Technical Field
[0001] Embodiments of the present disclosure belong to the technical field of electrical prospecting, and particularly relate to a method, apparatus, and electronic device for terrain and resistivity correction of high-density electrical method. Background Art
[0002] The high-density resistivity method (abbreviated as high-density electrical method) is a direct-current resistivity prospecting method. By artificially supplying power to the ground to generate an electric field and measuring the distribution of the electric field, the resistivity distribution of the underground medium is deduced, and the geological structure characteristics are deduced accordingly. The undulation of the terrain has a significant impact on the distribution of the electric field, and thus a large error will also be generated in the measurement result of apparent resistivity.
[0003] It is necessary to correct the terrain and resistivity of the measurement result of the high-density electrical method to improve the accuracy and reliability of the exploration result, especially in the high-density electrical method exploration in mountainous areas. In related technologies, the coordinates are mostly corrected without correcting the apparent resistivity value, so that a good exploration result of the high-density electrical method cannot be obtained. Summary of the Invention
[0004] Embodiments of the present disclosure aim to at least solve one of the technical problems existing in the prior art, and provide a method, apparatus, and electronic device for terrain and resistivity correction of high-density electrical method.
[0005] On the one hand, embodiments of the present disclosure provide a method for terrain and resistivity correction of high-density electrical method, the method comprising:
[0006] Obtaining the surface coordinates and initial apparent resistivity of the apparent resistivity points measured for the terrain to be surveyed by using the high-density electrical method respectively;
[0007] Obtaining the terrain data of the terrain to be surveyed; wherein, the terrain data includes the included angle between the terrain line and the horizontal line;
[0008] Based on the terrain data, correcting the surface coordinates and the initial apparent resistivity of the apparent resistivity points respectively to obtain the target coordinates and target apparent resistivity of the apparent resistivity points.
[0009] Optionally, the correcting the surface coordinates of the apparent resistivity points based on the terrain data to obtain the target coordinates of the apparent resistivity points includes:
[0010] Performing correction by using the following relational expression:
[0011] X c =X O +Dsinθ,
[0012] Z C =Z O +Dcosθ;
[0013] Among them, X c , Z c are the target coordinates of the apparent resistivity points, X o , Z o are the surface coordinates of the apparent resistivity points, D is the layer depth, and θ is the angle between the terrain line and the horizontal line.
[0014] Optionally, correcting the initial apparent resistivity based on the terrain data to obtain the target apparent resistivity includes:
[0015] Performing correction using the following relational expression:
[0016] ρ c = f(θ)ρ s
[0017] Among them, ρ c is the target apparent resistivity, f(θ) is the correction coefficient, and ρ s is the initial apparent resistivity.
[0018] Optionally, the initial apparent resistivity is obtained by the Wenner observation method;
[0019] Correcting the initial apparent resistivity based on the terrain data to obtain the target apparent resistivity includes:
[0020] Performing correction using the following relational expression:
[0021]
[0022] Among them, ρ c is the target apparent resistivity, f(θ) is the correction coefficient; ΔV MN is the voltage between the measuring electrodes MN, and I AB is the supply current between the power supply electrodes AB, and a is the electrode spacing.
[0023] Optionally, the initial apparent resistivity is obtained by the dipole observation method;
[0024] Correcting the initial apparent resistivity based on the terrain data to obtain the target apparent resistivity includes:
[0025] Performing correction using the following relational expression:
[0026]
[0027] Among them, ρ c is the target apparent resistivity, f(θ) is the correction coefficient; ΔV MN is the voltage between the measuring electrodes MN, and I AB is the supply current between the power supply electrodes AB, and a is the electrode spacing.
[0028] Optionally, the f(θ) is specifically the following formula:
[0029]
[0030] where Δθ is the change in the angle between the terrain line and the horizontal line.
[0031] Optionally, the method further includes: outputting an image of the target coordinates of the apparent resistivity points and the target apparent resistivity through a plotting software.
[0032] On the other hand, an embodiment of the present disclosure provides a terrain and resistivity correction device for high-density electrical method, and the correction device includes:
[0033] An acquisition module, configured to respectively acquire the surface coordinates and the initial apparent resistivity of the apparent resistivity points obtained by measuring the terrain to be surveyed using the high-density electrical method;
[0034] The acquisition module is further configured to acquire the terrain data of the terrain to be surveyed; wherein the terrain data includes the angle between the terrain line and the horizontal line;
[0035] A correction module, configured to respectively correct the surface coordinates of the apparent resistivity points and the initial apparent resistivity based on the terrain data to obtain the target coordinates and the target apparent resistivity of the apparent resistivity points.
[0036] On the other hand, an embodiment of the present disclosure further provides an electronic device, including:
[0037] One or more processors;
[0038] A storage unit, configured to store one or more programs, and when the one or more programs are executed by the one or more processors, enable the one or more processors to implement the terrain and resistivity correction method for high-density electrical method described above.
[0039] On the other hand, an embodiment of the present disclosure further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it can implement the terrain and resistivity correction method for high-density electrical method described above.
[0040] The terrain and resistivity correction method, device and electronic device of the embodiments of the present disclosure solve the problem of electric field distortion caused by terrain through two correction methods of coordinate correction and apparent resistivity correction, can obtain the true electrical characteristics of the formation, improve the exploration effect of high-density electrical method for undulating terrain, and provide a scientific basis for engineering treatment and decision-making. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] Figure 1Flow schematic block diagram of a terrain and resistivity correction method for high-density electrical method according to an embodiment of the present disclosure;
[0042] Figure 2 Schematic diagram of 3D to 2D conversion of a high-density electrical method measurement profile according to another embodiment of the present disclosure;
[0043] Figure 3 Schematic comparison diagram of initial measurement points and corrected points for high-density electrical method on undulating terrain according to another embodiment of the present disclosure;
[0044] Figure 4 Initial measurement result diagram of an inversion profile for high-density electrical method according to another embodiment of the present disclosure;
[0045] Figure 5 Target measurement result diagram of an inversion profile for high-density electrical method according to another embodiment of the present disclosure;
[0046] Figure 6 Schematic diagram of a terrain and resistivity correction device for high-density electrical method according to another embodiment of the present disclosure. Detailed implementation manners
[0047] To enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation manners.
[0048] As shown in Figure 1 , a terrain and resistivity correction method for high-density electrical method, the
[0049] method includes:
[0050] S110. Respectively obtain the surface coordinates and initial apparent resistivity of the apparent resistivity points obtained by measuring the terrain to be surveyed using the high-density electrical method.
[0051] Specifically, in this step, with reference to Figure 2 , 3D measurement data is obtained by measuring the terrain to be explored using the high-density electrical method, and the 3D measurement data of one exploration profile is converted into 2D profile data. Or 2D data is directly obtained by measuring the terrain to be explored using the high-density electrical method to obtain the surface coordinates and initial apparent resistivity of the apparent resistivity points.
[0052] S120. Obtain the terrain data of the terrain to be surveyed. Among them, the terrain data includes the angle between the terrain line and the horizontal line.
[0053] Specifically, in this step, with reference to Figure 3 , as a specific example, the angle θ between the terrain line and the horizontal line of the terrain to be surveyed is obtained by measurement and calculation, such as for θ1,
[0054] Sum the four included angles θ2, θ3, and θ4 and calculate the average value to obtain the included angle θ between the terrain line of the AMNB segment and the horizontal line. Among them, θ1 and θ4 are the included angles between the terrain lines at the A and B electrode points and the horizontal line, and θ2 and θ3 are the included angles between the terrain lines at the M and N electrode points and the horizontal line. The elevation angle is positive, and the dip angle is negative. This is to prepare for the coordinate correction and apparent resistivity correction in the following text. The specific application of the included angle θ between the terrain line and the horizontal line will be described in detail below and will not be elaborated here.
[0055] S130. Based on the terrain data, correct the surface coordinates of the apparent resistivity points and the initial apparent resistivity respectively to obtain the target coordinates and target apparent resistivity of the apparent resistivity points.
[0056] Specifically, in this step, with reference to Figure 3 , when applying the high-density resistivity method for exploration, points A and B represent the power supply electrodes, and points M and N represent the measurement electrodes. It should be noted that the positions and distances between the power supply electrodes and the measurement electrodes can be changed, and there are various arrangement forms. As a specific example, set the arrangement form of the power supply electrodes A, B and the measurement electrodes M, N as AMNB, and the line AMNB is the surface terrain. Among them, in the high-density resistivity method exploration data acquisition, it is assumed that the line AMNB of the surface terrain is horizontal, and point C is the center point of the measurement, located at the center of MN, and the elevation is zero.
[0057] The specific process of applying the high-density resistivity method for exploration is as follows: Set both the distance and depth in units of the electrode spacing a. The spacing between adjacent electrodes is equal, which is called the measurement pole pitch. When measuring the first layer, the measurement pole pitch takes one electrode spacing: AM = MN = NB = a. When measuring the second layer, the distance between the measurement electrodes takes 2 electrode spacings: AM = MN = NB = 2a, and so on. That is to say, the depth of the first layer is a, and the depth of the second layer is 2a, and so on. The horizontal coordinate of the apparent resistivity data measured each time is the midpoint of the measurement electrodes, and the depth coordinate is the pole pitch of the measurement electrodes. That is, the surface coordinates of the apparent resistivity points are obtained by calculating the coordinates at the measurement center point C. Obviously, this layered data arrangement method can only reflect the geological structure characteristics of flat terrain, and both the data and the surface morphology are presented in a horizontal manner.
[0058] It should be understood that if the terrain fluctuates greatly, the surface connected by the measurement pole pitches is inclined, and the elevation positions also vary greatly. The coordinates of the apparent resistivity measurement points are no longer the positions assumed by the model, and the coordinates of the ground surface and the apparent resistivity measurement points must be corrected. The terrain correction in the related technology only adds or subtracts the elevation coordinates, which will change the true occurrence of the geological structure, and the measured data is not real enough. Moreover, the resistivity observation value distortion caused by the change in the electric field distribution due to the terrain factor is not eliminated in the related technology.
[0059] In view of this, embodiments of the present disclosure specifically use a coordinate correction method to relocate the measurement points to the actual measurement positions. As Figure 3 shown, the surface coordinates of the apparent resistivity points are obtained according to the pole distance position and layer depth. The coordinate correction of the surface coordinates of the apparent resistivity points is specifically carried out using the following formula:
[0060] X c = X0 + Dsinθ,
[0061] Z C = Z O + Dcosθ;
[0062] where, X c and Z c are the target coordinates of the apparent resistivity points, X o and Z o are the surface coordinates of the apparent resistivity points, D is the layer depth, and θ is the angle between the terrain line and the horizontal line. It should be noted that the layer depth D is the corresponding electrode distance a during data acquisition, that is, D = a.
[0063] As a specific example, reference can be made to Figure 3 together. First, calculate the surface coordinates X o and Z o of the apparent resistivity points at the measurement center point C. The calculation formula is as follows:
[0064]
[0065] where, X o and Z o are the surface coordinates of the apparent resistivity points at point C, X M and X N are the horizontal coordinates at the measurement electrodes M and N, and Z M and Z N are the depth coordinates at the measurement electrodes M and N.
[0066] Then calculate the angle θ between the terrain line of the AMNB survey line and the horizontal line. For example, by calculating the average value of the sum of θ1, θ2, θ3, and θ4, the angle θ between the terrain line of the AMNB survey line and the horizontal line can be obtained. Specifically, the following formula can be used:
[0067]
[0068] Finally, perform the coordinate calculation for the relocation of point P s to point P C , that is, perform coordinate correction through the following formula:
[0069] X c = X0 + Dsinθ,
[0070] Zc = Z O + D cos θ;
[0071] It should be noted that, as Figure 3 shown, point P s is the measurement point obtained by the high-density resistivity method, and the surface coordinates of the corresponding apparent resistivity point are X o , Z o ; Point P C is the measurement point after coordinate correction, and the target coordinates of the corresponding apparent resistivity point are X c , Z c .
[0072] The terrain and resistivity correction method of the high-density resistivity method in the embodiments of the present disclosure solves the problem of distortion of resistivity observation values caused by terrain through coordinate correction, can obtain the true electrical property characteristics of the formation, thereby obtaining the true coordinates of the apparent resistivity point, and improves the exploration effect of the high-density resistivity method for undulating terrain.
[0073] Furthermore, it should be noted that the high-density resistivity method infers the geological structure characteristics based on the apparent resistivity difference between underground media. If the apparent resistivity value is not true, it will inevitably mislead the actual geological structure characteristics. As Figure 3 shown, the conventional calculation of apparent resistivity is: assuming that the earth is horizontal, based on the supply current between AB, the measured voltage between MN, and the device coefficient of the observation system, the initial apparent resistivity is calculated by the following formula:
[0074] Initial apparent resistivity of Wenner observation mode:
[0075]
[0076] Initial apparent resistivity of dipole observation mode:
[0077]
[0078] Among them, I AB is the supply current between the supply electrodes AB, ΔV MN is the voltage between the measurement electrodes MN, and a is the electrode spacing.
[0079] Referring to Figure 3 together, the initial apparent resistivity ρ α obtained by the Wenner observation mode and the initial apparent resistivity ρ β obtained by the dipole observation mode, the positions corresponding to both are below the center point C, that is, at the measurement point P s . The initial apparent resistivity ρ s of the Wenner observation mode at the P α point position, and the initial apparent resistivity ρ of the dipole observation modeβ , which are uniformly referred to as the initial apparent resistivity ρ s , that is, the measured apparent resistivity ρ s .
[0080] When the ground is flat, the current field distribution is relatively uniform, and the results of the above formula for calculating the apparent resistivity are accurate. When the terrain fluctuates greatly, the distribution of the electric field deviates significantly from that of the flat terrain. For example, the current density at the ridge part is small, and the voltage ΔV between the measurement points MN MN is small, and the apparent resistivity of the ridge part calculated is small, so it should be corrected to increase the apparent resistivity. For the valley terrain effect, the current density at the valley part is high, and the measured voltage ΔV MN is large, and the apparent resistivity of the valley part calculated is large, so it should be corrected to decrease.
[0081] In view of this, the embodiments of the present disclosure specifically correct the initial apparent resistivity through the method of apparent resistivity correction, and the apparent resistivity correction is to eliminate the influence of terrain undulation on the calculation result of the apparent resistivity. Among them, the initial apparent resistivity ρ obtained by the Wenner observation method α is specifically corrected by the following formula:
[0082]
[0083] where ρ c is the target apparent resistivity, f(θ) is the correction coefficient; ΔV MN is the voltage between the measurement electrodes MN, I AB is the supply current between the supply electrodes AB, and a is the electrode spacing.
[0084] The initial apparent resistivity ρ obtained by the dipole observation method β is specifically corrected by the following formula:
[0085]
[0086] where ρ c is the target apparent resistivity, f(θ) is the correction coefficient; ΔV MN is the voltage between the measurement electrodes MN, I AB is the supply current between the supply electrodes AB, and a is the electrode spacing.
[0087] From the above, the specific formula for correcting the initial apparent resistivity ρ s to obtain the target apparent resistivity ρ c is:
[0088] ρ c = f(θ)ρ s .
[0089] where ρ cis the target apparent resistivity, f(θ) is the correction factor, and ρ s is the initial apparent resistivity.
[0090] It is not difficult to understand that f(θ) in the above apparent resistivity correction formula is the correction factor, and the correction factor is specifically a function of the angle between the terrain line and the horizontal line. The calculation formula is as follows:
[0091]
[0092] where Δθ is the change in the angle between the terrain line and the horizontal line. The change in the angle of the mountain ridge terrain is negative, and the change in the angle of the valley terrain is positive. As Figure 3 shown, the change in the angle Δθ between the terrain line and the horizontal line is calculated through θ1, θ2, θ3, and θ4 within the AMNB measurement line segment. The calculation formula for Δθ is as follows:
[0093] Δθ = θ4 + θ1 - θ2 - θ3.
[0094] Once again, it should be noted that, as Figure 3 shown, the measurement point P s obtained by using the high-density resistivity method, and the measured apparent resistivity ρ s corresponding to the measurement point P s , that is, the initial apparent resistivity ρ s . It is corrected through coordinate correction to obtain the corrected measurement point P C , and through apparent resistivity correction to obtain the corrected apparent resistivity ρ C corresponding to the measurement point P c , that is, the target apparent resistivity ρ c .
[0095] For the terrain and resistivity correction method of the high-density resistivity method in the embodiments of the present disclosure, through apparent resistivity correction, the true electrical characteristics of the formation can be obtained, thereby obtaining the true resistance value of the apparent resistivity and improving the exploration effect of the high-density resistivity method in undulating terrain.
[0096] As a specific example, measurements are carried out on the slope of a mountain using the high-density resistivity method to obtain the initial measurement results. The initial measurement results are as Figure 4 shown. The initial measurement results are respectively subjected to coordinate correction and apparent resistivity correction through this method to obtain the target measurement results. The target measurement results are as Figure 5 shown. After correction using this method, the degree of coincidence and accuracy between the inferred stratification and the direct drilling conclusions are higher. By correcting the electrode positions and resistivity values of each sounding point through this method, the true position and true resistance value of the apparent resistivity value can be obtained, and the true geological structure characteristics can be reflected.
[0097] Exemplarily, as Figure 4 andFigure 5 As shown, the method further includes: outputting the target coordinates of the apparent resistivity points and the target apparent resistivity for imaging through mapping software.
[0098] Specifically, after obtaining the target coordinates of the apparent resistivity points and the target apparent resistivity, input them into the mapping software, and perform imaging and plotting through the mapping software. For example, use winsurf mapping software.
[0099] In the topographic and resistivity correction method of the high-density electrical method according to the embodiments of the present disclosure, by outputting the true position and true resistance value of the apparent resistivity value for imaging, it can effectively ensure that the survey line in the result map coincides with the actual survey line position, the obtained apparent resistivity value truly reflects the formation, and the apparent resistivity imaging is clear, and the geological condition revelation result is consistent with the borehole.
[0100] On the other hand, as Figure 6 shown, the embodiments of the present disclosure provide a topographic and resistivity correction device for high-density electrical method, and the correction device includes:
[0101] An acquisition module 111, configured to respectively acquire the surface coordinates and the initial apparent resistivity of the apparent resistivity points obtained by measuring the terrain to be surveyed using the high-density electrical method.
[0102] The acquisition module 111 is further configured to acquire the topographic data of the terrain to be surveyed, where the topographic data includes the angle between the topographic line and the horizontal line.
[0103] A correction module 121, configured to respectively correct the surface coordinates of the apparent resistivity points and the initial apparent resistivity based on the topographic data to obtain the target coordinates and the target apparent resistivity of the apparent resistivity points.
[0104] In the topographic and resistivity correction device for high-density electrical method according to the embodiments of the present disclosure, through the provided acquisition module and correction module, coordinate correction and apparent resistivity correction can be performed, solving the problem of electric field distortion caused by the terrain, being able to obtain the true electrical property characteristics of the formation, improving the exploration effect of high-density electrical method for undulating terrain, and providing a scientific basis for engineering treatment and decision-making.
[0105] On the other hand, the embodiments of the present disclosure further provide an electronic device, including:
[0106] One or more processors.
[0107] A storage unit, configured to store one or more programs, when the one or more programs are executed by the one or more processors, enabling the one or more processors to implement the topographic and resistivity correction method of the high-density electrical method described above. For the specific steps of the method, reference can be made to the relevant descriptions above, and no further elaboration will be made here.
[0108] The electronic device according to the embodiments of the present disclosure can perform coordinate correction and apparent resistivity correction, solve the problem of electric field distortion caused by terrain, obtain the true electrical property characteristics of the formation, improve the exploration effect of high-density resistivity method for undulating terrain, and provide a scientific basis for engineering treatment and decision-making.
[0109] On the other hand, the embodiments of the present disclosure also provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it can implement the terrain and resistivity correction method of the high-density resistivity method described above. For the specific steps of the method, reference can be made to the relevant descriptions above, and no further elaboration will be made here.
[0110] Among them, the computer-readable medium can be included in the device or electronic device in the embodiments of the present disclosure, or can exist alone.
[0111] Among them, the computer-readable storage medium can be any tangible medium that contains or stores a program. It can be an electrical, magnetic, optical, electromagnetic, infrared, semiconductor system, device, or equipment. More specific examples include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, an optical fiber, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.
[0112] Among them, the computer-readable storage medium can also include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Specific examples include, but are not limited to, electromagnetic signals, optical signals, or any suitable combination thereof.
[0113] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present disclosure. However, the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.
Claims
1. A terrain and resistivity correction method for high-density electrical method, characterized in that The method includes: Obtaining the surface coordinates and initial apparent resistivity of the apparent resistivity points obtained by measuring the terrain to be surveyed using the high-density electrical method respectively; Obtaining the terrain data of the terrain to be surveyed; wherein, the terrain data includes the angle between the terrain line and the horizontal line; Based on the terrain data, correcting the surface coordinates and the initial apparent resistivity of the apparent resistivity points respectively to obtain the target coordinates and target apparent resistivity of the apparent resistivity points.
2. The method according to claim 1, wherein The correcting the surface coordinates of the apparent resistivity points based on the terrain data to obtain the target coordinates of the apparent resistivity points includes: Performing correction using the following relational expression: X c = X0 + Dsinθ, Z c = Z0 + D cos θ; Among them, X c , Z c are the target coordinates of the apparent resistivity points, X o , Z o are the surface coordinates of the apparent resistivity points, D is the layer depth, and θ is the angle between the terrain line and the horizontal line.
3. The method according to claim 1, characterized in that The correcting the initial apparent resistivity based on the terrain data to obtain the target apparent resistivity includes: Performing correction using the following relational expression: ρ c = f(θ)ρ s where ρ c is the target apparent resistivity, f(θ) is the correction factor, and ρ s is the initial apparent resistivity.
4. The method according to claim 3, wherein The initial apparent resistivity is obtained by the Wenner observation method; The correcting the initial apparent resistivity based on the terrain data to obtain the target apparent resistivity includes: Performing correction using the following relational expression: Among them, ρ c is the target apparent resistivity, f(θ) is the correction factor; ΔV MN is the voltage between the measuring electrodes MN, I AB is the supply current between the supply electrodes AB, and a is the electrode spacing.
5. The method according to claim 3, characterized in that, The initial apparent resistivity is obtained by the dipole observation method; The correcting the initial apparent resistivity based on the terrain data to obtain the target apparent resistivity includes: Performing correction using the following relational expression: Among them, ρ c is the target apparent resistivity, f(θ) is the correction coefficient; ΔV MN is the voltage between the measuring electrodes MN, I AB is the supply current between the supply electrodes AB, and a is the electrode spacing.
6. The method according to any one of claims 3 to 5, characterized in that The specific form of f(θ) is as follows: where, Δθ is the change amount of the angle between the terrain line and the horizontal line.
7. The method according to claim 1, characterized in that, The method further includes: outputting and imaging the target coordinates and the target apparent resistivity of the apparent resistivity points through a drawing software.
8. A terrain and resistivity correction device for high-density electrical method, characterized in that, The correction device includes: An obtaining module, configured to obtain the surface coordinates and initial apparent resistivity of the apparent resistivity points obtained by measuring the terrain to be surveyed using the high-density electrical method respectively; The obtaining module is further configured to obtain the terrain data of the terrain to be surveyed; wherein, the terrain data includes the angle between the terrain line and the horizontal line; A correction module, configured to correct the surface coordinates and the initial apparent resistivity of the apparent resistivity points respectively based on the terrain data to obtain the target coordinates and target apparent resistivity of the apparent resistivity points.
9. An electronic device, characterized in that, Including: One or more processors; A storage unit, configured to store one or more programs, and when the one or more programs are executed by the one or more processors, enable the one or more processors to implement the terrain and resistivity correction method of the high-density electrical method according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that when the computer program is executed by a processor, it can implement the terrain and resistivity correction method of the high-density electrical method according to any one of claims 1 to 7.