A method and system for adaptive generation of geological exploration lines in an open pit mine

Abstract

This application relates to the field of coal mining technology, and provides an adaptive generation method and system for open-pit geological exploration lines. By constructing a transformation matrix through angle clustering, the geographic coordinates of open-pit geological exploration holes are converted into linear coordinates. Then, the components of the current coordinates of each geological exploration hole are subtracted from and compared with the set of peak values ​​of the geological exploration hole density curve to generate an initial grid location list of geological exploration holes. Duplicate items in the initial grid location list are updated to generate open-pit geological exploration lines. This effectively solves the problems of inconsistent standards and uneven distribution of geological exploration lines formed by geological exploration holes during the merging of multiple geological exploration phases, as well as the problem of decreased accuracy in 3D geological modeling of open-pit mines caused by irregular geological exploration lines. The constructed geological exploration line grid is more reasonable than traditional methods, improving the accuracy of 3D geological models of open-pit mines.

Description

Technical Field

[0001] This application relates to the field of open-pit mining technology, and in particular to an adaptive method and system for generating geological exploration lines in open-pit mines. Background Technology

[0002] Open-pit geological exploration often consists of multiple phases, each yielding a grid of geological exploration lines composed of boreholes. However, due to site constraints, the grid standards for these lines are inconsistent and their distribution uneven, resulting in a less than ideal final grid. Furthermore, existing 3D geological models for open-pit mines are often generated through interpolation based on borehole data from existing exploration projects; the irregularity of these exploration lines can negatively impact the model's accuracy. Summary of the Invention

[0003] The purpose of this application is to provide an adaptive generation method and system for open-pit geological exploration lines to solve or alleviate the problems existing in the prior art.

[0004] To achieve the above objectives, this application provides the following technical solution: This application provides an adaptive generation method for open-pit geological exploration lines, including: A linear transformation matrix constructed by angle clustering is used to convert the geographic coordinates of open-pit geological exploration boreholes into linear coordinates. The components of the linear coordinates of each geological exploration borehole are subtracted from and compared with the set of component values ​​of the peak value of the geological exploration borehole density curve to generate an initial grid location list of geological exploration boreholes. Duplicate items in the initial grid location list are updated to generate open-pit geological exploration lines.

[0005] Preferably, the geographical coordinates of the obtained open-pit geological exploration boreholes are clustered by angle to obtain the two dominant principal orientation angles of the open-pit geological exploration boreholes; Based on the linear transformation matrix constructed from the two dominant principal orientation angles, the geographic coordinates of the open-pit geological exploration boreholes are linearly transformed to obtain the linear coordinates of the open-pit geological exploration boreholes.

[0006] Preferably, the initial geographic coordinates of the obtained open-pit geological exploration boreholes are translated to obtain the geographic coordinates of the open-pit geological exploration boreholes. By using a clustering algorithm to statistically analyze the direction angles of the neighborhood difference vectors of the geographic coordinates of open-pit geological exploration boreholes, two dominant principal direction angles of the open-pit geological exploration boreholes are obtained.

[0007] Preferably, Gaussian kernel density estimation is performed on the components of the linear coordinates of the open-pit geological exploration borehole in the two linear directions to generate two density curves for the geological exploration borehole; Construct component value sets by arranging the component values ​​corresponding to the peak values ​​of the two density curves of the geological exploration borehole in descending order. ; Connect the linear coordinate components of each geological exploration borehole with... The elements in the table are subtracted and compared to generate an initial grid list of open-pit geological exploration boreholes.

[0008] Preferred, component value set for: In the formula, For geological exploration boreholes in the linear direction The set of components and component values ​​on the surface. These are geological exploration boreholes in the linear direction. The first and second derivatives of the Gaussian kernel density estimation density curve are obtained. For geological exploration boreholes in the linear direction The first Gaussian kernel density estimation density curve on the The peaks are in the linear direction The components on; , For geological exploration boreholes in the linear direction The number of peak points on the Gaussian kernel density estimation density curve.

[0009] Preferred, component value set for: In the formula, For geological exploration boreholes in the linear direction The set of components and component values ​​on the surface. These are geological exploration boreholes in the linear direction. The first and second derivatives of the Gaussian kernel density estimation density curve are obtained. For geological exploration boreholes in the linear direction The first Gaussian kernel density estimation density curve on the The peaks are in the linear direction The components on; , For geological exploration boreholes in the linear direction The number of peak points on the Gaussian kernel density estimation density curve.

[0010] Preferably, according to the initial grid position model: Generate an initial grid location list for open-pit geological exploration boreholes. ; In the formula, Indicates the first Each geological exploration borehole is in the linear direction The set of components and component values ​​on The element with the smallest absolute value; For the first Each geological exploration borehole is in the linear direction The set of components and component values ​​on The element with the smallest absolute value; For the first The location of each geological exploration borehole in the geological exploration line grid. The number of geological exploration boreholes, , It is a positive integer.

[0011] Preferably, calculate any two duplicates in the initial grid location list. , In the set of component values The corresponding coordinate axis values ​​in , Its linear coordinates , The difference; The linear coordinate position corresponding to the maximum difference is updated by shifting the position of the component containing the maximum difference one position to the right.

[0012] Preferably, duplicate items in the initial grid location list are updated until there are no duplicate items in the initial grid list, thereby generating an updated grid location list for geological exploration boreholes; Connect the coordinates in the updated grid location list of geological exploration boreholes in ascending order to generate open-pit mine geological exploration lines.

[0013] This embodiment also provides an adaptive generation system for open-pit mine geological exploration lines, which generates open-pit mine geological exploration lines using any of the above embodiments' adaptive generation methods. The system includes: The coordinate transformation unit is configured as a linear transformation matrix constructed through angle clustering to convert the geographic coordinates of open-pit geological exploration holes into linear coordinates; The exploration line generation unit is configured to subtract and compare the components of the linear coordinates of each geological exploration borehole with the set of component values ​​of the peak value of the geological exploration borehole density curve, generate an initial grid location list of geological exploration boreholes, and update the duplicate items in the initial grid location list to generate open-pit mine geological exploration lines.

[0014] Beneficial effects: The adaptive generation method and system for open-pit geological exploration lines provided in this application converts the geographic coordinates of open-pit geological exploration holes into linear coordinates using a current transformation matrix constructed through angle clustering. Then, it subtracts and compares the components of the current coordinates of each exploration hole with the set of peak values ​​of the exploration hole density curve to generate an initial grid location list. Duplicate items in the initial grid location list are updated to generate open-pit geological exploration lines. This effectively solves the problems of inconsistent standards and uneven distribution of geological exploration lines formed by exploration holes during the merging of multiple geological exploration phases, as well as the decrease in accuracy of open-pit 3D geological modeling caused by irregular geological exploration lines. The constructed geological exploration line grid is more reasonable than traditional methods, improving the accuracy of open-pit 3D geological models. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein: Figure 1 This is a flowchart illustrating an adaptive generation method for open-pit geological exploration lines according to some embodiments of this application; Figure 2 This is a logical schematic diagram of an adaptive generation method for open-pit geological exploration lines provided according to some embodiments of this application; Figure 3 This is a schematic diagram of the original geographic coordinates (first coordinates) of an open-pit geological exploration borehole in a specific embodiment of this application; Figure 4 for Figure 3 A schematic diagram of the geographic coordinates (second coordinates) obtained after translating the original geographic coordinates of the geological exploration borehole in the embodiment shown; Figure 5 for Figure 4 A schematic diagram of the neighborhood difference vector of the geographic coordinates of the geological exploration borehole in the embodiment shown; Figure 6 for Figure 4 A schematic diagram of the two dominant main directions of the geological exploration borehole in the illustrated embodiment; Figure 7 for Figure 4 A scatter plot of the linear coordinates (third coordinates) of the geological exploration borehole after linear transformation of the geographic coordinates in the illustrated embodiment. Figure 8 for Figure 7 The density curve of Gaussian kernel density estimation of linear coordinate components of geological exploration boreholes in the embodiment shown; Figure 9 for Figure 4 The above-described embodiment generates a schematic diagram of an open-pit mine geological exploration line. Figure 10 This is a schematic diagram of the structure of an adaptive generation system for open-pit geological exploration lines provided according to some embodiments of this application. Detailed Implementation

[0016] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will understand that modifications and variations can be made to the present application without departing from the scope or spirit of the present application. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention should fall within the scope of protection of the embodiments of the present invention.

[0017] To address the issue of decreased accuracy in 3D geological modeling of open-pit mines due to inconsistent standards, uneven distribution, and irregularities in the geological exploration lines formed by geological exploration boreholes during the merging process of existing open-pit mine geological exploration work, this embodiment provides an adaptive generation method for open-pit mine geological exploration lines. This method performs a linear transformation on the geographic coordinates of the acquired open-pit mine geological exploration boreholes, and then uses Gaussian kernel density estimation on the two components of the transformed geographic coordinates to obtain density curves. A set of component values ​​for the peak values ​​of the density curves is constructed. Then, each coordinate point is subtracted from the set according to its component values ​​and compared to generate an initial grid location list for the geological exploration boreholes. Duplicate items in the initial grid location list are updated, and finally, an elastic open-pit mine geological model is generated. This method effectively solves the problem of merging multi-phase geological exploration grids, improves the accuracy of open-pit mine 3D geological models, has broad application prospects, and supplements and improves existing 3D geological modeling methods.

[0018] like Figures 1 to 9 As shown, the adaptive generation method for the geological exploration line of this open-pit mine includes: Step S101: Convert the geographic coordinates of open-pit geological exploration holes into linear coordinates using a linear transformation matrix constructed through angle clustering.

[0019] In this embodiment, the original geographic coordinates (first coordinates) of the open-pit mine geological exploration boreholes are obtained, and the set of first coordinates is defined as... ,have: In the formula, , For open-pit mine The first coordinate of each geological exploration borehole The number of geological exploration boreholes in open-pit mines. It is a positive integer. Then, the obtained open-pit mine is calculated. The center point of the original coordinates of each geological exploration borehole Specifically: Next, with the center point As the origin of a predefined coordinate system, the first coordinate of the geological exploration borehole is translated to determine... The positions of each geological exploration borehole in a predefined coordinate system. In the formula, Center point As the origin of the predefined coordinate system, the first... The geographic coordinates (second coordinates) of each geological exploration borehole are obtained by translational transformation of the first coordinates. Furthermore, there is a set of second coordinates for each geological exploration borehole. .

[0020] Then, for the set The geographic coordinates (second coordinates) of open-pit geological exploration boreholes are used to obtain two dominant orientation angles for the boreholes through angle clustering. Specifically, the orientation angles of the neighborhood difference vectors of the geographic coordinates (second coordinates) of the open-pit geological exploration boreholes are statistically analyzed using a clustering algorithm to obtain the two dominant orientation angles of the boreholes.

[0021] Then, a linear transformation matrix is ​​constructed based on the two dominant principal direction angles. : in, These are the first and second dominant orientation angles of the geological exploration borehole, respectively.

[0022] Next, a linear transformation matrix is ​​constructed based on the two dominant principal direction angles. A linear transformation is performed on the geographic coordinates (second coordinates) of the open-pit geological exploration boreholes to obtain their linear spatial coordinates (third coordinates) in linear space. Specifically, According to the formula: A linear coordinate transformation is performed on the second coordinate of the geological exploration borehole to obtain the linear coordinates (third coordinate) of the geological exploration borehole in linear space; where, For the first The second coordinate of the geological exploration borehole , The number of geological exploration boreholes in open-pit mines; For the first The linear coordinates of a geological exploration borehole in linear space, and the set of linear coordinates of a geological exploration borehole in linear space. .

[0023] Step S102: Subtract and compare the components of the linear coordinates of each geological exploration borehole with the set of component values ​​of the peak value of the geological exploration borehole density curve to generate an initial grid location list of geological exploration boreholes, and update the duplicate items in the initial grid location list to generate open-pit mine geological exploration lines.

[0024] In this embodiment, the set of linear coordinates of geological exploration boreholes in linear space Then, Gaussian kernel density estimation is performed on the two components of the current coordinates of the geological exploration borehole obtained by the linear transformation. Specifically, the linear spatial coordinates of the geological exploration borehole are projected onto the two coordinate axes of the linear space (the horizontal axis of the linear space). , coordinate vertical axis On the coordinate axis, the linear spatial coordinates of the geological exploration boreholes are plotted on the horizontal axis. , coordinate vertical axis The projection is performed on the surface, and the kernel density of the projection point is calculated using a kernel density estimation algorithm to determine the kernel density estimation curve of the geological exploration borehole in linear space.

[0025] In a specific example, the linear spatial coordinates of the geological exploration borehole are projected onto the horizontal axis of the linear spatial coordinate system. After that, the Gaussian kernel density estimation function is used to calculate the horizontal axis of the linear spatial coordinates. Take office at one point nuclear density ,have: In the formula, The linear spatial coordinates of the geological exploration borehole are on the horizontal axis of the linear space. The standard deviation of the projection onto the surface.

[0026] By performing Gaussian kernel density estimation on the two linear components of the linear coordinates (third coordinate) of the geological exploration borehole, two density curves of the borehole are generated. Then, the component values ​​corresponding to the peak values ​​of the two density curves are constructed into component value sets in descending order. Specifically, the set of component values. for: In the formula, For geological exploration boreholes in the linear direction The components and their values ​​on the x-axis are the coordinate axes. The corresponding set of component values ​​corresponding to the peak of the Gaussian kernel density estimation density curve. These are geological exploration boreholes in the linear direction. The first and second derivatives of the Gaussian kernel density estimation density curve are obtained. For geological exploration boreholes in the linear direction The first Gaussian kernel density estimation density curve on the The peaks are in the linear direction The components on; , For geological exploration boreholes in the linear direction The number of peak points on the Gaussian kernel density estimation density curve.

[0027] Component value set for: In the formula, For geological exploration boreholes in the linear direction The components and their value sets on the coordinate axis, i.e., the vertical axis. The corresponding set of component values ​​corresponding to the peak of the Gaussian kernel density estimation density curve. These are geological exploration boreholes in the linear direction. The first and second derivatives of the Gaussian kernel density estimation density curve are obtained. For geological exploration boreholes in the linear direction The first Gaussian kernel density estimation density curve on the The peaks are in the linear direction The components on; , For geological exploration boreholes in the linear direction The number of peak points on the Gaussian kernel density estimation density curve.

[0028] Next, the linear coordinates (third coordinates) of the geological exploration borehole are subtracted from the corresponding set of component values ​​according to their components. The position of the element with the smallest absolute value is taken as the position of that coordinate point in that component direction. The positions in the two component directions are combined and stored in the grid position list to generate the initial grid position list of the open-pit geological exploration borehole. Specifically, according to the initial grid position model: Generate an initial grid location list for open-pit geological exploration boreholes. In the formula, Indicates the first Each geological exploration borehole is in the linear direction The set of components and component values ​​on The element with the smallest absolute value; For the first Each geological exploration borehole is in the linear direction The set of components and component values ​​on The element with the smallest absolute value; For the first The location of each geological exploration borehole in the geological exploration line grid. The number of geological exploration boreholes, , It is a positive integer.

[0029] Finally, check the initial grid location list of the geological exploration boreholes. Check for duplicates in the initial grid position list. Duplicate items are filtered out, and any two duplicate items in the initial grid position list are calculated. , In the set of component values The corresponding coordinate axis values ​​in , Its linear coordinates (second coordinates) , The difference is calculated, and the linear coordinate position corresponding to the maximum difference is updated by shifting the position of the component containing the maximum difference one position to the right.

[0030] In a specific application scenario, starting from the initial grid position list Take any two identical elements from the duplicate items. , Find the set of component values Component value set The corresponding coordinate axis values , Calculate its linear coordinates (second coordinates) respectively. , In both component directions and , The difference is calculated, and the four differences are compared. The position of the coordinate point corresponding to the maximum difference is updated by shifting the position of the component with the maximum difference one position to the right. For example, if In component direction The difference is largest on the coordinate axis values. Corresponding grid position Updated to .

[0031] This process is repeated, updating duplicate entries in the initial grid position list until the initial grid position list is complete. If there are no duplicates, generate an updated grid location list for geological exploration boreholes; then connect the coordinates in the updated grid location list of geological exploration boreholes in ascending order to generate open-pit mine geological exploration lines.

[0032] This effectively solves the problem of decreased accuracy in 3D geological modeling of open-pit mines caused by inconsistent standards, uneven distribution, and irregularities in geological exploration lines formed by geological exploration boreholes during the merging of multiple geological exploration phases. The constructed geological exploration line grid is more reasonable than traditional methods, improving the accuracy of 3D geological models of open-pit mines. It has broad application prospects and supplements and improves existing 3D geological modeling methods.

[0033] This embodiment also provides an adaptive generation system for open-pit mine geological exploration lines, such as Figure 10 As shown, the open-pit mine geological exploration line is generated using the adaptive generation method of any of the above embodiments. The system includes: The coordinate transformation unit 1001 is configured as a linear transformation matrix constructed by angle clustering to convert the geographic coordinates of open-pit geological exploration holes into linear coordinates. The exploration line generation unit 1002 is configured to subtract and compare the components of the linear coordinates of each geological exploration hole with the set of component values ​​of the peak value of the geological exploration hole density curve, generate an initial grid location list of geological exploration holes, and update the duplicate items in the initial grid location list to generate open-pit mine geological exploration lines.

[0034] The adaptive generation system for open-pit geological exploration lines provided in this embodiment can realize the steps and processes of the adaptive generation method for open-pit geological exploration lines in any of the above embodiments, and achieve the same technical effect, which will not be described in detail here.

[0035] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An adaptive generation method for open-pit mine geological exploration lines, characterized in that, include: The geographic coordinates of open-pit geological exploration boreholes are converted into linear coordinates by a linear transformation matrix constructed through angle clustering. The components of the linear coordinates of each geological exploration borehole are subtracted from and compared with the set of component values ​​of the peak value of the geological exploration borehole density curve to generate an initial grid location list of geological exploration boreholes. Duplicate items in the initial grid location list are updated to generate open-pit mine geological exploration lines.

2. The method according to claim 1, characterized in that, The geographical coordinates of the obtained open-pit geological exploration boreholes are clustered by angle to obtain the two dominant principal orientation angles of the open-pit geological exploration boreholes; Based on the linear transformation matrix constructed from the two dominant principal orientation angles, the geographic coordinates of the open-pit geological exploration boreholes are linearly transformed to obtain the linear coordinates of the open-pit geological exploration boreholes.

3. The method according to claim 2, characterized in that, The initial geographic coordinates of the obtained open-pit geological exploration boreholes are translated to obtain the geographic coordinates of the open-pit geological exploration boreholes. By using a clustering algorithm to statistically analyze the direction angles of the neighborhood difference vectors of the geographic coordinates of open-pit geological exploration boreholes, two dominant principal direction angles of the open-pit geological exploration boreholes are obtained.

4. The method according to claim 1, characterized in that, Gaussian kernel density estimation is performed on the components of the linear coordinates of the open-pit geological exploration boreholes in two linear directions to generate two density curves for the geological exploration boreholes. Construct component value sets by arranging the component values ​​corresponding to the peak values ​​of the two density curves of the geological exploration borehole in descending order. ; Connect the linear coordinate components of each geological exploration borehole with... The elements in the table are subtracted and compared to generate an initial grid list of open-pit geological exploration boreholes.

5. The method according to claim 4, characterized in that, Component value set for: In the formula, For geological exploration boreholes in the linear direction The set of components and component values ​​on the surface. These are geological exploration boreholes in the linear direction. The first and second derivatives of the Gaussian kernel density estimation density curve are obtained. For geological exploration boreholes in the linear direction The first Gaussian kernel density estimation density curve on the The peaks are in the linear direction The components on; , For geological exploration boreholes in the linear direction The number of peak points on the Gaussian kernel density estimation density curve.

6. The method according to claim 4, characterized in that, Component value set for: In the formula, For geological exploration boreholes in the linear direction The set of components and component values ​​on the surface. These are geological exploration boreholes in the linear direction. The first and second derivatives of the Gaussian kernel density estimation density curve are obtained. For geological exploration boreholes in the linear direction The first Gaussian kernel density estimation density curve on the The peaks are in the linear direction The components on; , For geological exploration boreholes in the linear direction The number of peak points on the Gaussian kernel density estimation density curve.

7. The method according to claim 4, characterized in that, Based on the initial grid position model: Generate an initial grid location list for open-pit geological exploration boreholes. ; In the formula, Indicates the first Each geological exploration borehole is in the linear direction The set of components and component values ​​on The element with the smallest absolute value; For the first Each geological exploration borehole is in the linear direction The set of components and component values ​​on The element with the smallest absolute value; For the first The location of each geological exploration borehole in the geological exploration line grid. The number of geological exploration boreholes, , It is a positive integer.

8. The method according to claim 7, characterized in that, Calculate any two duplicates in the initial grid location list. , In the set of component values The corresponding coordinate axis values ​​in , Its linear coordinates (second coordinates) , The difference; The linear coordinate position corresponding to the maximum difference is updated by shifting the position of the component containing the maximum difference one position to the right.

9. The method according to claim 1, characterized in that, Update duplicates in the initial grid location list until there are no duplicates in the initial grid list, and generate an updated grid location list for geological exploration boreholes; Connect the coordinates in the updated grid location list of geological exploration boreholes in ascending order to generate open-pit mine geological exploration lines.

10. An adaptive generation system for open-pit mine geological exploration lines, characterized in that, The system generates open-pit geological exploration lines using the adaptive generation method for any of claims 1-9, the system comprising: The coordinate transformation unit is configured as a linear transformation matrix constructed through angle clustering to convert the geographic coordinates of open-pit geological exploration holes into linear coordinates; The exploration line generation unit is configured to subtract and compare the components of the linear coordinates of each geological exploration borehole with the set of component values ​​of the peak value of the geological exploration borehole density curve, generate an initial grid location list of geological exploration boreholes, and update the duplicate items in the initial grid location list to generate open-pit mine geological exploration lines.

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