Magnetotelluric geological exploration system

Abstract

The invention provides a magnetotelluric geological exploration system, and the system comprises an exploration region setting module which carries out the analysis of a region exploration coefficient of a target exploration region, and sets a geological exploration point; the first analysis module is used for analyzing to obtain target area electromagnetic data of the target exploration area; the second analysis module is used for carrying out electromagnetic signal extraction on the target area electromagnetic data to obtain an area geological electromagnetic signal, an area mineral electromagnetic signal, a geological signal matching coefficient of the area geological electromagnetic signal and a mineral signal matching coefficient of the area mineral electromagnetic signal; the third analysis module is used for analyzing to obtain first geological distribution data and second geological distribution data of the target exploration area; and the geological exploration model module is used for constructing a geological model according to the first geological distribution data and the second geological distribution data to obtain a target geological exploration model of the target exploration area. According to the invention, the precision of geological exploration of the target exploration area is improved.

Description

Technical Field

[0001] The present invention relates to the field of geological exploration, and particularly to a magnetotelluric geological exploration system. Background Art

[0002] Currently, in the field of geological exploration, accurately obtaining underground geological structure information is crucial for work such as resource exploration and engineering construction. As an important geophysical exploration method, the magnetotelluric method studies the electrical properties of underground media by measuring the natural-source magnetotelluric field. Due to advantages such as not requiring artificial establishment of a field source and being able to detect a large depth range, it has been widely applied.

[0003] The magnetotelluric exploration systems in related technologies often cannot reasonably set geological exploration points according to the actual regional conditions of the exploration area, and cannot effectively extract electromagnetic signals from the regional electromagnetic data of the exploration area, resulting in low accuracy of geological exploration and there is room for improvement. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a magnetotelluric geological exploration system to improve the problem that the magnetotelluric exploration systems in related technologies often cannot reasonably set geological exploration points according to the actual regional conditions of the exploration area, and cannot effectively extract electromagnetic signals from the regional electromagnetic data of the exploration area, resulting in low accuracy of geological exploration.

[0005] The present application provides a magnetotelluric geological exploration system, including:

[0006] An exploration area setting module: obtaining the regional geographical environment information of the target exploration area, analyzing to obtain the regional exploration coefficient of the target exploration area based on the regional geographical environment information; and setting geological exploration points of the target exploration area based on the regional exploration coefficient;

[0007] A first analysis module: obtaining the regional electromagnetic data of the target exploration area based on the geological exploration points, performing noise elimination processing on the regional electromagnetic data to obtain target area electromagnetic data;

[0008] A second analysis module: presetting geological electromagnetic signals and mineral electromagnetic signals; extracting geological electromagnetic signals from the target area electromagnetic data to obtain regional geological electromagnetic signals and the corresponding geological signal matching coefficients; extracting mineral electromagnetic signals from the target area electromagnetic data to obtain regional mineral electromagnetic signals and the corresponding mineral signal matching coefficients;

[0009] Third analysis module: Analyze the geological inversion priority coefficient based on the geological signal matching coefficient, and perform the first inversion on the regional geological electromagnetic signal according to the geological inversion priority coefficient to obtain the first geological distribution data; Analyze the mineral inversion priority coefficient based on the mineral signal matching coefficient, and perform the second inversion on the regional mineral electromagnetic signal according to the mineral inversion priority coefficient to obtain the second geological distribution data;

[0010] Geological exploration model module: Construct a geological model based on the first geological distribution data and the second geological distribution data to obtain the target geological exploration model of the target exploration area.

[0011] Preferably, obtain the regional geographical environment information of the target exploration area, specifically:

[0012] The regional geographical environment information includes the exploration area area, the exploration area terrain characteristics, and the regional geological medium data of the target exploration area.

[0013] Preferably, analyze the regional exploration coefficient of the target exploration area based on the regional geographical environment information, specifically:

[0014] Obtain the regional area coefficient of the target exploration area based on the exploration area area;

[0015] Obtain the terrain undulation area of the target exploration area and the corresponding terrain undulation amplitude according to the exploration area terrain characteristics; and obtain the regional terrain coefficient of the target exploration area according to the terrain undulation amplitude of the terrain undulation area in the target exploration area;

[0016] Obtain the regional medium conductivity, regional medium anisotropy, and soil humidity of the target exploration area based on the regional geological medium data; and obtain the regional medium coefficient of the target exploration area according to the regional medium conductivity, regional medium anisotropy, and regional soil humidity;

[0017] Obtain the regional exploration coefficient of the target exploration area according to the regional area coefficient, regional terrain coefficient, and regional medium coefficient.

[0018] Preferably, set the geological exploration points of the target exploration area according to the regional exploration coefficient, specifically:

[0019] Obtain the number of exploration points of the target exploration area according to the regional exploration coefficient, and set the exploration points of the target exploration area according to the number of exploration points and the exploration area area of the target exploration area.

[0020] Preferably, perform noise elimination processing on the regional electromagnetic data to obtain the target area electromagnetic data, specifically:

[0021] Construct a noise database, match the noise signals in the noise database with the regional electromagnetic signals in the regional electromagnetic data to obtain the noise matching degree between the regional electromagnetic signals and the noise signals;

[0022] Set a matching degree threshold, mark the regional electromagnetic signals in the regional electromagnetic data with a noise matching degree less than the matching degree threshold with respect to the noise signals as effective electromagnetic signals, and constitute the target regional electromagnetic data of the target exploration area based on the effective electromagnetic signals.

[0023] Preferably, extract geological electromagnetic signals from the target regional electromagnetic data to obtain regional geological electromagnetic signals and the corresponding geological signal matching coefficients of the regional geological electromagnetic signals, specifically:

[0024] Match the target electromagnetic signals in the target regional electromagnetic data with the geological electromagnetic signals to obtain the geological signal matching degree between the target electromagnetic signals and the geological electromagnetic signals, and compare the geological signal matching degree with a preset geological signal matching degree threshold;

[0025] If the geological signal matching degree between the target electromagnetic signals and the geological electromagnetic signals is greater than the preset geological signal matching degree threshold, mark the target electromagnetic signals as regional geological electromagnetic signals, and obtain the geological signal matching coefficients of the regional geological electromagnetic signals based on the geological signal matching degree and the geological signal matching degree threshold.

[0026] Preferably, extract mineral electromagnetic signals from the target regional electromagnetic data to obtain regional mineral electromagnetic signals and the corresponding mineral signal matching coefficients of the regional mineral electromagnetic signals, specifically:

[0027] Match the target electromagnetic signals in the target regional electromagnetic data with the mineral electromagnetic signals to obtain the mineral signal matching degree between the target electromagnetic signals and the mineral electromagnetic signals, and compare the mineral signal matching degree with a preset mineral signal matching degree threshold;

[0028] If the mineral signal matching degree between the target electromagnetic signals and the mineral electromagnetic signals is greater than the preset mineral signal matching degree threshold, mark the target electromagnetic signals as regional mineral electromagnetic signals, and obtain the mineral signal matching coefficients of the regional mineral electromagnetic signals based on the mineral signal matching degree and the mineral signal matching degree threshold.

[0029] Preferably, analyze and obtain a geological inversion priority coefficient based on the geological signal matching coefficient, and perform a first inversion on the regional geological electromagnetic signals according to the geological inversion priority coefficient to obtain first geological distribution data, specifically:

[0030] Obtain the geological electromagnetic signal frequency of the regional geological electromagnetic signals, and obtain the geological inversion priority coefficient of the regional geological electromagnetic signals based on the geological electromagnetic signal frequency and the geological signal matching coefficient;

[0031] Perform the first inversion calculation on the regional geological electromagnetic signals according to the geological inversion priority coefficient to obtain the first geological distribution data of the target exploration area;

[0032] Analyze the mineral inversion priority coefficient based on the mineral signal matching coefficient, and perform the second inversion on the regional mineral electromagnetic signals according to the mineral inversion priority coefficient to obtain the second geological distribution data, specifically:

[0033] Obtain the mineral electromagnetic signal frequency of the regional mineral electromagnetic signals, and obtain the mineral inversion priority coefficient of the regional mineral electromagnetic signals according to the mineral electromagnetic signal frequency and the mineral signal matching coefficient;

[0034] Perform the second inversion calculation on the regional mineral electromagnetic signals according to the mineral inversion priority coefficient to obtain the second geological distribution data of the target exploration area.

[0035] Preferably, obtain the target geological exploration model of the target exploration area according to the first geological distribution data and the second distribution data, specifically:

[0036] Obtain the spatial position of the exploration point of the geological exploration point;

[0037] Construct a first geological model according to the first geological distribution data and the spatial position of the exploration point of the target exploration area, and perform the first geological marking on the first geological model;

[0038] Construct a second geological model according to the second geological distribution data and the spatial position of the exploration point of the target exploration area, and perform the second geological marking on the second geological model;

[0039] Integrate the first geological model and the second geological model to obtain the target geological exploration model of the target exploration area and the regional model marking of the target geological exploration model, where the regional model marking includes the first geological marking and the second geological marking.

[0040] In summary, the beneficial effects of the present application are as follows: The present application analyzes the regional exploration coefficient of the target exploration area based on the regional geographical environment information of the target exploration area, and sets the geological exploration points of the target exploration area according to the regional exploration coefficient; obtains the regional electromagnetic data of the target exploration area based on the geological exploration points, and performs noise elimination processing on the regional electromagnetic data to obtain the target area electromagnetic data; in addition, by presetting the geological electromagnetic signal and the mineral electromagnetic signal, extracts the geological electromagnetic signal from the target area electromagnetic data to obtain the regional geological electromagnetic signal and the geological signal matching coefficient corresponding to the regional geological electromagnetic signal; extracts the mineral electromagnetic signal from the target area electromagnetic data to obtain the regional mineral electromagnetic signal and the mineral signal matching coefficient corresponding to the regional mineral electromagnetic signal; analyzes the geological inversion priority coefficient based on the geological signal matching coefficient, and performs the first inversion on the regional geological electromagnetic signal according to the geological inversion priority coefficient to obtain the first geological distribution data; analyzes the mineral inversion priority coefficient based on the mineral signal matching coefficient, and performs the second inversion on the regional mineral electromagnetic signal according to the mineral inversion priority coefficient to obtain the second geological distribution data; finally, constructs a geological model based on the first geological distribution data and the second geological distribution data to obtain the target geological exploration model of the target exploration area, realizing the reasonable setting of the geological exploration points of the target exploration area according to the actual regional data of the target exploration area, and being able to effectively extract the electromagnetic signal of the regional electromagnetic data of the exploration area, improving the accuracy of the geological exploration results. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, some of the drawings in the embodiments of the present application will be briefly described below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope of the present application.

[0042] Figure 1 It is a schematic structural diagram of a magnetotelluric geological exploration system provided by the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The following combines the embodiments and Figure 1 makes a further detailed description of the present application, but the implementation manners of the present application are not limited thereto.

[0044] A magnetotelluric geological exploration system includes:

[0045] An exploration area setting module: obtains the regional geographical environment information of the target exploration area, analyzes the regional exploration coefficient of the target exploration area based on the regional geographical environment information; and sets the geological exploration points of the target exploration area according to the regional exploration coefficient;

[0046] The first analysis module: Obtain the regional electromagnetic data of the target exploration area based on geological exploration points, and perform noise elimination processing on the regional electromagnetic data to obtain the target area electromagnetic data;

[0047] The second analysis module: Preset geological electromagnetic signals and mineral electromagnetic signals; extract geological electromagnetic signals from the target area electromagnetic data to obtain regional geological electromagnetic signals and the corresponding geological signal matching coefficients of the regional geological electromagnetic signals; extract mineral electromagnetic signals from the target area electromagnetic data to obtain regional mineral electromagnetic signals and the corresponding mineral signal matching coefficients of the regional mineral electromagnetic signals;

[0048] The third analysis module: Analyze the geological inversion priority coefficient based on the geological signal matching coefficient, and perform the first inversion on the regional geological electromagnetic signal according to the geological inversion priority coefficient to obtain the first geological distribution data; analyze the mineral inversion priority coefficient based on the mineral signal matching coefficient, and perform the second inversion on the regional mineral electromagnetic signal according to the mineral inversion priority coefficient to obtain the second geological distribution data;

[0049] The geological exploration model module: Construct a geological model based on the first geological distribution data and the second geological distribution data to obtain the target geological exploration model of the target exploration area.

[0050] Obtain the regional geographical environment information of the target exploration area, specifically:

[0051] The regional geographical environment information includes the exploration area area, exploration area terrain characteristics, and regional geological medium data of the target exploration area.

[0052] Analyze the regional exploration coefficient of the target exploration area based on the regional geographical environment information, specifically:

[0053] Obtain the regional area coefficient of the target exploration area based on the exploration area area;

[0054] Obtain the terrain undulation area of the target exploration area and the corresponding terrain undulation amplitude based on the exploration area terrain characteristics; and obtain the regional terrain coefficient of the target exploration area based on the terrain undulation amplitude of the terrain undulation area within the target exploration area;

[0055] Obtain the regional medium conductivity, regional medium anisotropy, and soil humidity of the target exploration area based on the regional geological medium data; and obtain the regional medium coefficient of the target exploration area based on the regional medium conductivity, regional medium anisotropy, and regional soil humidity;

[0056] Obtain the regional exploration coefficient of the target exploration area based on the regional area coefficient, regional terrain coefficient, and regional medium coefficient.

[0057] In some embodiments, the area coefficient of the target exploration area is positively correlated with the exploration area. The specific value of the area coefficient can be calculated by the function: area coefficient = exploration area * area conversion factor, where the area conversion factor is preset according to historical exploration data and actual exploration requirements;

[0058] The number of regions corresponding to the undulating terrain area of the target exploration area can be taken and marked as QS, and the undulating amplitude of the undulating terrain area can be taken and marked as QF. If the number of regions corresponding to the undulating terrain area of the target exploration area is 10, then QS takes the value of 10. If the undulating amplitude of the undulating terrain area is 10 meters, then QF takes the value of 10. At this time, the specific value of the regional terrain coefficient of the target exploration area can be calculated by the function: is calculated, where i is the region number of the undulating terrain area in the target exploration area, and a is the terrain conversion factor. The terrain conversion factor a can be preset according to historical exploration data and actual exploration requirements;

[0059] The regional medium coefficient of the target exploration area can be calculated by the function: regional medium coefficient = b1 * regional medium conductivity + b2 * regional medium anisotropy + b3 * regional soil humidity, where b1, b2, and b3 are the influence weight factors of regional medium conductivity, regional medium anisotropy, and soil humidity on the regional medium coefficient respectively;

[0060] Based on the area coefficient, terrain coefficient, and medium coefficient,

[0061] The regional exploration coefficient of the target exploration area can be calculated by the function: regional exploration coefficient = regional area factor * area coefficient + regional terrain factor * terrain coefficient + regional medium factor * medium coefficient, where the regional area factor, regional terrain factor, and regional medium factor are the influence weights of the area coefficient, terrain coefficient, and medium coefficient on the regional exploration coefficient respectively.

[0062] And geological exploration points of the target exploration area are set according to the regional exploration coefficient. Specifically:

[0063] The number of exploration points of the target exploration area is obtained according to the regional exploration coefficient, and exploration points are set for the target exploration area based on the number of exploration points and the exploration area of the target exploration area.

[0064] In some embodiments, the specific value of the number of exploration points can be calculated by the function: number of exploration points = regional exploration coefficient * number conversion factor, where the number conversion factor can be preset according to historical exploration data and actual exploration requirements. For example, if the regional exploration coefficient is 100 and the number conversion factor is preset to 0.1, then the number of exploration points of the target exploration area is 10;

[0065] Setting exploration points for the target exploration area based on the number of exploration points and the exploration area of the target exploration area means evenly dividing the exploration area of the target exploration area based on the number of exploration points. For example, if the number of exploration points in the target exploration area is 10, then the exploration area of the target exploration area is divided into 10 equal-area regions.

[0066] Perform noise elimination processing on the regional electromagnetic data to obtain the target area electromagnetic data. Specifically:

[0067] Construct a noise database, match the noise signals in the noise database with the regional electromagnetic signals in the regional electromagnetic data to obtain the noise matching degree between the regional electromagnetic signals and the noise signals;

[0068] Set a matching degree threshold, mark the regional electromagnetic signals in the regional electromagnetic data with a noise matching degree less than the matching degree threshold with the noise signals as effective electromagnetic signals, and form the target area electromagnetic data of the target exploration area based on the effective electromagnetic signals.

[0069] In some embodiments, the noise database contains at least one noise signal, and the noise signals in the noise database are preset based on historical exploration data and big data, including all known noise signals in the field of geological exploration;

[0070] In the process of matching the noise signals in the noise database with the regional electromagnetic signals in the regional electromagnetic data, signal matching can be performed based on one or more of the frequency characteristics, phase characteristics, amplitude characteristics, and polarization characteristics simultaneously. The selection of specific signal matching characteristics can be determined according to the exploration equipment used in the actual geological exploration process.

[0071] Extract geological electromagnetic signals from the target area electromagnetic data to obtain regional geological electromagnetic signals and the corresponding geological signal matching coefficients of the regional geological electromagnetic signals. Specifically:

[0072] Match the target electromagnetic signals in the target area electromagnetic data with the geological electromagnetic signals to obtain the geological signal matching degree between the target electromagnetic signals and the geological electromagnetic signals, and compare the geological signal matching degree with the preset geological signal matching degree threshold;

[0073] If the geological signal matching degree between the target electromagnetic signals and the geological electromagnetic signals is greater than the preset geological signal matching degree threshold, then mark the target electromagnetic signals as regional geological electromagnetic signals, and obtain the geological signal matching coefficients of the regional geological electromagnetic signals based on the geological signal matching degree and the geological signal matching degree threshold.

[0074] In some embodiments, when matching the target electromagnetic signal in the target area electromagnetic data with the geological electromagnetic signal, signal matching can be performed based on one or more of the frequency feature, phase feature, amplitude feature, and polarization feature simultaneously. The selection of specific signal matching features can be determined according to the exploration equipment used in the actual geological exploration process. For example, the phase feature of the target electromagnetic signal can be selected to be matched with the geological electromagnetic signal. At this time, the matching degree of the phase features of the target electromagnetic signal and the geological electromagnetic signal is the geological signal matching degree between the target electromagnetic signal and the geological electromagnetic signal. For example, the phase feature and frequency feature of the target electromagnetic signal can be selected to be matched with the geological electromagnetic signal. At this time, the matching degree of the phase features and the matching degree of the frequency features of the target electromagnetic signal and the geological electromagnetic signal are the geological signal matching degree between the target electromagnetic signal and the geological electromagnetic signal.

[0075] The geological signal matching coefficient of the regional geological electromagnetic signal can be calculated through the calculation function: geological signal matching coefficient = geological signal matching degree - geological signal matching degree threshold.

[0076] Extract the mineral electromagnetic signal from the target area electromagnetic data to obtain the regional mineral electromagnetic signal and the mineral signal matching coefficient corresponding to the regional mineral electromagnetic signal. Specifically:

[0077] Match the target electromagnetic signal in the target area electromagnetic data with the mineral electromagnetic signal to obtain the mineral signal matching degree between the target electromagnetic signal and the mineral electromagnetic signal, and compare the mineral signal matching degree with the preset mineral signal matching degree threshold.

[0078] If the mineral signal matching degree between the target electromagnetic signal and the mineral electromagnetic signal is greater than the preset mineral signal matching degree threshold, then mark the target electromagnetic signal as the regional mineral electromagnetic signal, and obtain the mineral signal matching coefficient of the regional mineral electromagnetic signal based on the mineral signal matching degree and the mineral signal matching degree threshold.

[0079] In some embodiments, when matching the target electromagnetic signal in the target area electromagnetic data with the mineral electromagnetic signal, signal matching can be performed based on one or more of the frequency feature, phase feature, amplitude feature, and polarization feature simultaneously. The selection of specific signal matching features can be determined according to the exploration equipment used in the actual geological exploration process. For example, the phase feature of the target electromagnetic signal can be selected to be matched with the mineral electromagnetic signal. At this time, the matching degree of the phase features of the target electromagnetic signal and the mineral electromagnetic signal is the mineral signal matching degree between the target electromagnetic signal and the mineral electromagnetic signal. For example, the phase feature and frequency feature of the target electromagnetic signal can be selected to be matched with the mineral electromagnetic signal. At this time, the matching degree of the phase features and the matching degree of the frequency features of the target electromagnetic signal and the mineral electromagnetic signal are the mineral signal matching degree between the target electromagnetic signal and the mineral electromagnetic signal.

[0080] The mineral signal matching coefficient of the regional mineral electromagnetic signal can be calculated through the calculation function: mineral signal matching coefficient = mineral signal matching degree - mineral signal matching degree threshold.

[0081] Based on the geological signal matching coefficient, the geological inversion priority coefficient is analyzed, and based on the geological inversion priority coefficient, the first inversion of the regional geological electromagnetic signal is performed to obtain the first geological distribution data. Specifically:

[0082] Obtain the geological electromagnetic signal frequency of the regional geological electromagnetic signal, and based on the geological electromagnetic signal frequency and the geological signal matching coefficient, obtain the geological inversion priority coefficient of the regional geological electromagnetic signal;

[0083] Perform the first inversion calculation on the regional geological electromagnetic signal according to the geological inversion priority coefficient to obtain the first geological distribution data of the target exploration area;

[0084] Based on the mineral signal matching coefficient, the mineral inversion priority coefficient is analyzed, and based on the mineral inversion priority coefficient, the second inversion of the regional mineral electromagnetic signal is performed to obtain the second geological distribution data. Specifically:

[0085] Obtain the mineral electromagnetic signal frequency of the regional mineral electromagnetic signal, and based on the mineral electromagnetic signal frequency and the mineral signal matching coefficient, obtain the mineral inversion priority coefficient of the regional mineral electromagnetic signal;

[0086] Perform the second inversion calculation on the regional mineral electromagnetic signal according to the mineral inversion priority coefficient to obtain the second geological distribution data of the target exploration area.

[0087] In some embodiments, based on the geological electromagnetic signal frequency and the geological signal matching coefficient, the geological inversion priority coefficient of the regional geological electromagnetic signal is obtained. Specifically, the smaller the geological electromagnetic signal frequency of the regional geological electromagnetic signal, the larger its geological inversion priority coefficient. When the geological electromagnetic signal frequencies of the regional geological electromagnetic signals are the same, the geological inversion priority coefficient is positively correlated with the geological signal matching coefficient of the target exploration area. That is, when the geological electromagnetic signal frequencies of the regional geological electromagnetic signals are the same, the larger the geological signal matching coefficient of the target exploration area, the larger the geological inversion priority coefficient;

[0088] Similarly, based on the mineral electromagnetic signal frequency and the mineral signal matching coefficient, the mineral inversion priority coefficient of the regional mineral electromagnetic signal is obtained. Specifically, the smaller the mineral electromagnetic signal frequency of the regional mineral electromagnetic signal, the larger its geological inversion priority coefficient. When the mineral electromagnetic signal frequencies of the regional mineral electromagnetic signals are the same, the mineral inversion priority coefficient is positively correlated with the mineral signal matching coefficient of the target exploration area. That is, when the mineral electromagnetic signal frequencies of the regional mineral electromagnetic signals are the same, the larger the mineral signal matching coefficient of the target exploration area, the larger the mineral inversion priority coefficient;

[0089] In addition, the inversion calculation is implemented through a preset inversion algorithm. The inversion algorithm can be set to the damped least squares method, the conjugate gradient method, etc. According to the inversion algorithm, the collected magnetotelluric signals are converted into the resistivity and other electrical property parameter distributions of the underground medium to obtain the geological distribution data of the target exploration area. The first geological distribution data is specifically the geological structure distribution data of the target exploration area, and the second geological distribution data is specifically the geological mineral distribution data of the target exploration area.

[0090] Based on the first geological distribution data and the second distribution data, the target geological exploration model of the target exploration area is obtained, specifically:

[0091] Obtain the exploration point spatial position of the geological exploration point;

[0092] Based on the first geological distribution data of the target exploration area and the exploration point spatial position, construct the first geological model and perform geological marking on the first geological model;

[0093] Based on the second geological distribution data of the target exploration area and the exploration point spatial position, construct the second geological model and perform mineral marking on the second geological model;

[0094] Integrate the first geological model and the second geological model to obtain the target geological exploration model of the target exploration area and the regional model marking of the target geological exploration model, where the regional model marking includes geological marking and mineral marking.

[0095] In some embodiments, based on the electrical property parameter distributions such as the regional medium resistivity in the first geological distribution data, combined with the exploration point spatial position of the geological exploration point, the first geological model of the target exploration area can be constructed. The first geological model is specifically a three-dimensional geological structure model, and the first marking is specifically a geological structure marking; based on the electrical property parameter distributions such as the regional medium resistivity in the second geological distribution data, combined with the exploration point spatial position of the geological exploration point, the second geological model of the target exploration area can be constructed. The second geological model is specifically a three-dimensional geological mineral model, and the second marking is specifically a geological mineral marking;

[0096] It should be noted that the target geological exploration model of the target exploration area includes geological structure information and geological mineral information, and the geological structure information has a first mark, namely the geological mineral mark, and the geological mineral information has a second mark, namely the geological mineral mark.

[0097] The above are only the preferred embodiments of the present application. The protection scope of the present application is not limited to the above embodiments. All technical solutions falling within the idea of the present application belong to the protection scope of the present application. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present application should also be regarded as the protection scope of the present application.

Claims

1. A magnetotelluric geological exploration system, characterized in that, Including: Exploration area setting module: Obtain the regional geographical environment information of the target exploration area, and analyze the regional exploration coefficient of the target exploration area based on the regional geographical environment information; And set geological exploration points in the target exploration area according to the regional exploration coefficient; First analysis module: Obtain the regional electromagnetic data of the target exploration area based on the geological exploration points, and perform noise elimination processing on the regional electromagnetic data to obtain the target area electromagnetic data; Second analysis module: Preset geological electromagnetic signals and mineral electromagnetic signals; Extract geological electromagnetic signals from the target area electromagnetic data to obtain regional geological electromagnetic signals and the corresponding geological signal matching coefficients; Extract mineral electromagnetic signals from the target area electromagnetic data to obtain regional mineral electromagnetic signals and the corresponding mineral signal matching coefficients; Third analysis module: Analyze the geological inversion priority coefficient based on the geological signal matching coefficient, and perform the first inversion on the regional geological electromagnetic signal according to the geological inversion priority coefficient to obtain the first geological distribution data; Analyze the mineral inversion priority coefficient based on the mineral signal matching coefficient, and perform the second inversion on the regional mineral electromagnetic signal according to the mineral inversion priority coefficient to obtain the second geological distribution data; Geological exploration model module: Construct a geological model based on the first geological distribution data and the second geological distribution data to obtain the target geological exploration model of the target exploration area.

2. The magnetotelluric geological exploration system according to claim 1, characterized in that, Obtain the regional geographical environment information of the target exploration area, specifically: The regional geographical environment information includes the exploration area area, exploration area terrain characteristics, and regional geological medium data of the target exploration area.

3. The magnetotelluric geological exploration system according to claim 2, characterized in that Analyze the regional exploration coefficient of the target exploration area based on the regional geographical environment information, specifically: Obtain the regional area coefficient of the target exploration area based on the exploration area area; Obtain the terrain undulation area of the target exploration area and the corresponding terrain undulation amplitude according to the exploration area terrain characteristics; And obtain the regional terrain coefficient of the target exploration area according to the terrain undulation amplitude of the terrain undulation area in the target exploration area; Obtain the regional medium conductivity, regional medium anisotropy, and soil humidity of the target exploration area based on the regional geological medium data; And obtain the regional medium coefficient of the target exploration area according to the regional medium conductivity, regional medium anisotropy, and regional soil humidity; Obtain the regional exploration coefficient of the target exploration area based on the regional area coefficient, regional terrain coefficient, and regional medium coefficient.

4. A magnetotelluric geological exploration system according to claim 3, characterized in that, And set geological exploration points in the target exploration area according to the regional exploration coefficient, specifically: Obtain the number of exploration points in the target exploration area based on the regional exploration coefficient, and set exploration points in the target exploration area according to the number of exploration points and the exploration area area of the target exploration area.

5. The magnetotelluric geological exploration system according to claim 4, characterized in that, Perform noise elimination processing on the regional electromagnetic data to obtain the target area electromagnetic data, specifically: Construct a noise database, match the noise signals in the noise database with the regional electromagnetic signals in the regional electromagnetic data to obtain the noise matching degree between the regional electromagnetic signal and the noise signal; Set a matching degree threshold, mark the regional electromagnetic signals in the regional electromagnetic data with a noise matching degree less than the matching degree threshold with the noise signal as effective electromagnetic signals, and constitute the target regional electromagnetic data of the target exploration area based on the effective electromagnetic signals.

6. The magnetotelluric geological exploration system according to claim 5, characterized in that Extract geological electromagnetic signals from the target regional electromagnetic data to obtain regional geological electromagnetic signals and the corresponding geological signal matching coefficients of the regional geological electromagnetic signals. Specifically: Perform signal matching between the target electromagnetic signals in the target regional electromagnetic data and the geological electromagnetic signals to obtain the geological signal matching degree between the target electromagnetic signals and the geological electromagnetic signals, and compare the geological signal matching degree with a preset geological signal matching degree threshold; If the geological signal matching degree between the target electromagnetic signals and the geological electromagnetic signals is greater than the preset geological signal matching degree threshold, mark the target electromagnetic signals as regional geological electromagnetic signals, and obtain the geological signal matching coefficients of the regional geological electromagnetic signals based on the geological signal matching degree and the geological signal matching degree threshold.

7. A magnetotelluric geological exploration system according to claim 6, characterized in that, Extract mineral electromagnetic signals from the target regional electromagnetic data to obtain regional mineral electromagnetic signals and the corresponding mineral signal matching coefficients of the regional mineral electromagnetic signals. Specifically: Perform signal matching between the target electromagnetic signals in the target regional electromagnetic data and the mineral electromagnetic signals to obtain the mineral signal matching degree between the target electromagnetic signals and the mineral electromagnetic signals, and compare the mineral signal matching degree with a preset mineral signal matching degree threshold; If the mineral signal matching degree between the target electromagnetic signals and the mineral electromagnetic signals is greater than the preset mineral signal matching degree threshold, mark the target electromagnetic signals as regional mineral electromagnetic signals, and obtain the mineral signal matching coefficients of the regional mineral electromagnetic signals based on the mineral signal matching degree and the mineral signal matching degree threshold.

8. The magnetotelluric geological exploration system according to claim 7, characterized in that, Analyze and obtain the geological inversion priority coefficient based on the geological signal matching coefficient, and perform the first inversion on the regional geological electromagnetic signals based on the geological inversion priority coefficient to obtain the first geological distribution data. Specifically: Obtain the geological electromagnetic signal frequency of the regional geological electromagnetic signals, and obtain the geological inversion priority coefficient of the regional geological electromagnetic signals based on the geological electromagnetic signal frequency and the geological signal matching coefficient; Perform the first inversion calculation on the regional geological electromagnetic signals based on the geological inversion priority coefficient to obtain the first geological distribution data of the target exploration area; Analyze and obtain the mineral inversion priority coefficient based on the mineral signal matching coefficient, and perform the second inversion on the regional mineral electromagnetic signals based on the mineral inversion priority coefficient to obtain the second geological distribution data. Specifically: Obtain the mineral electromagnetic signal frequency of the regional mineral electromagnetic signals, and obtain the mineral inversion priority coefficient of the regional mineral electromagnetic signals based on the mineral electromagnetic signal frequency and the mineral signal matching coefficient; Perform the second inversion calculation on the regional mineral electromagnetic signals based on the mineral inversion priority coefficient to obtain the second geological distribution data of the target exploration area.

9. The magnetotelluric geological exploration system according to claim 8, characterized in that, Obtain the target geological exploration model of the target exploration area based on the first geological distribution data and the second distribution data. Specifically: Obtain the exploration point spatial position of the geological exploration point; Construct a first geological model based on the first geological distribution data and the spatial positions of exploration points in the target exploration area, and perform a first geological marking on the first geological model; Construct a second geological model based on the second geological distribution data and the spatial positions of exploration points in the target exploration area, and perform a second geological marking on the second geological model; Integrate the first geological model and the second geological model to obtain a target geological exploration model for the target exploration area and a regional model marking for the target geological exploration model, where the regional model marking includes the first geological marking and the second geological marking.

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