A cross-section geological profile boundary adjustment method based on two-dimensional and three-dimensional real-time linkage

Abstract

The application relates to a cross geological profile boundary adjustment method based on two-dimensional and three-dimensional real-time linkage, and belongs to the geological exploration field. The cross geological profile boundary adjustment method provided by the application draws a cross geological profile preliminary draft through a two-dimensional drawing compilation system, imports the cross geological profile into a three-dimensional modeling system, judges the overall coordination of the geological boundary through the three-dimensional modeling system, and performs real-time modification in the two-dimensional drawing compilation system. The application can realize three-dimensional and two-dimensional linkage adjustment of the cross geological profile boundary in real time, and provides an efficient, real-time and accurate profile drawing adjustment method for geological profile drawing personnel.

Description

Technical Field

[0001] This invention relates to a method for adjusting the boundary of cross geological profiles based on real-time linkage of two-dimensional and three-dimensional data, belonging to the field of geological exploration. Background Technology

[0002] For many years, with increasing pressure on resources and the environment, countries around the world have turned their attention to the deep Earth's crust, continuously increasing the depth of mineral resource exploration. Making the Earth's deep interior transparent has become a focus of attention for more and more countries. In particular, the development of international collaborative "one geology" activities has further propelled the construction of "Glassy Earth" into the international cooperation process, attracting high attention from the geological science community and governments of various countries. In a country or region, "Glassy Earth," also known as a glassy territory, involves the core work of constructing multi-scale, multi-element three-dimensional geological models.

[0003] Geological profiles are the primary data source for 3D geological modeling. In modeling areas with complex fault structures and significant stratigraphic variations, it is essential to employ a series of intersecting geological profiles in two different directions to effectively control the regional geological structure and ensure that the established 3D geological model truly becomes a digital twin of the area.

[0004] The compilation of cross-geological profiles is relatively complex, especially in collaborative work involving multiple people. Due to differences in geological understanding, it is necessary to ensure the consistency of geological boundaries with the same attributes while also ensuring the rationality of the spatial distribution and morphology of complex stratigraphic and fault systems. This requires repeated adjustments to the geological boundaries in the profiles within the 2D map compilation system. It is important to emphasize that this is a very tedious process. Before the 2D map compilation system and the 3D modeling system are linked, the effects of each round of modifications and adjustments cannot be seen in a timely manner, making it impossible to identify problems promptly. This is time-consuming, labor-intensive, and ineffective, hindering the rapid and efficient advancement of digital twins of regional geological structures and the construction of a "glass land." Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a method for adjusting the boundaries of intersecting geological profiles based on real-time two-dimensional and three-dimensional linkage. This invention can perform real-time three-dimensional and two-dimensional linkage adjustment of the boundaries of intersecting geological profiles, providing geological profile drafters with an efficient, real-time, and accurate method for modifying and adjusting profiles.

[0006] To achieve the above objectives, the technical solution provided by this invention is: a method for adjusting the boundary of intersecting geological profiles based on real-time linkage in two and three dimensions, comprising at least the following steps:

[0007] (1) Three-dimensional mapping of two-dimensional geological profiles: Using the preliminary draft of the cross geological profiles that have been pre-drawn in the two-dimensional map, the cross geological profile data of two different directions are mapped in three dimensions according to the control point elevation profile method.

[0008] (2) Preliminary judgment on the rationality of geological boundaries: In the three-dimensional modeling system, the overall spatial morphology and contact relationship of the geological boundaries of the intersecting geological profiles are judged to be coordinated and rational. The intersecting geological profiles with inconsistent overall spatial morphology and contact relationship are selected, and the geological boundary of one direction is returned from the three-dimensional modeling system to the two-dimensional map editing system in real time. The position of the geological boundary of all geological profiles in the other direction at the intersection with the current profile is marked on the current profile with a short horizontal line.

[0009] (3) Preliminary modification of geological boundaries: Modify the geological boundaries in step (2) in the two-dimensional map compilation system, map the modified geological boundaries to the three-dimensional modeling system for dynamic display, and repeat step (2) until the geological boundaries on all intersecting geological profiles are coordinated and reasonable as a whole.

[0010] (4) Review the consistency of the lines of the cross geological profiles: Use the three-dimensional modeling system to check the consistency of the lines of the cross geological profiles that have been initially coordinated and reasonable in steps (2) and (3). Return and calculate the elevation difference of the same attribute stratigraphic boundary and the same attribute fault boundary at the intersection of the geological profiles. If the obtained elevation difference exceeds the preset allowable error range, the corresponding geological profile is returned from the three-dimensional modeling system to the two-dimensional map compilation system for modification. After modification, it is linked back to the three-dimensional modeling system in real time to ensure that the elevation difference of the geological boundary at the intersection of all geological profiles in the two directions does not exceed the set accuracy error range.

[0011] (5) Add control points to improve accuracy: In the 3D modeling system, check the overall coordinated and reasonable cross geological profiles after the consistency check in step (4), and check whether there are control points within the specified range of the intersection of geological boundaries. If there are control points within the specified range of the intersection of geological boundaries, transfer them to the intersection of geological boundaries; if there are no control points within the specified range of the intersection of geological boundaries, add control points at the intersection of the corresponding geological boundaries.

[0012] (6) Automatic correction of geological profile: In the three-dimensional modeling system, the geological boundary after step (5) is taken as the main direction profile and the other geological profile as the secondary direction profile according to the regional geological conditions. The three-dimensional modeling system automatically captures the control points at the intersection of the secondary direction geological profile and uniformly translates them to the control points at the intersection of the main direction geological profile, so that the elevation error of the two intersection profiles at the intersection is zero.

[0013] The coordinates of the two ends of the cross geological profile in step (1) are: query the coordinates of the starting point of the top of the cross geological profile (X1, Y1) in the two-dimensional map editing system, and record the starting point map coordinates and the corresponding three-dimensional space real coordinates (X1', Y1', H1') in the configuration file. Query the coordinates of the ending point of the top of the cross geological profile (X2, Y2) in the same way, and record the ending point map coordinates and the corresponding three-dimensional space real coordinates (X2', Y2', H2') in the configuration file. Import the configuration file and the cross geological profile together into the three-dimensional modeling system so that the coordinates of the two-dimensional profile map are mapped into the three-dimensional space, resulting in a three-dimensional profile containing real coordinates.

[0014] In step (2), when returning from the 3D modeling system to the 2D map editing system, the idea of ​​using control points to cut the profile is adopted. That is, after selecting any geological boundary line on the profile in the 3D modeling system, the system will generate a 2D projection surface according to the direction of the selected geological boundary line. Other geological boundaries on the current profile will be projected onto the 2D surface, thereby achieving the purpose of returning from 3D to 2D in real time.

[0015] In step (4), the 3D modeling system judges the elevation difference of the same attribute stratigraphic boundary and the same attribute fault boundary according to the preset accuracy error range, and returns the corresponding geological profile with the elevation difference exceeding the accuracy error range to the 2D map compilation system for subsequent modification.

[0016] In step (5), the specified range error accuracy at the intersection of geological boundaries of a geological profile with a scale of 1:2000 is less than 2 meters; and the specified range error accuracy at the intersection of geological boundaries of a geological profile with a scale of 1:10000 is less than 10 meters.

[0017] In step (6), the control points at the intersection of the two geological profiles are uniformly translated based on the geological profile in one direction using the three-dimensional modeling system to eliminate elevation errors.

[0018] As can be seen from the above technical solution, the cross-geological profile boundary adjustment method based on real-time linkage of two and three dimensions provided by the present invention draws the initial draft of the cross-geological profile in the two-dimensional map editing system, imports the cross-geological profile into the three-dimensional modeling system, judges the overall coordination of the geological boundary through the three-dimensional modeling system, and makes real-time modifications in the two-dimensional map editing system. Because this method dynamically adjusts the geological profile boundary through real-time linkage of two and three dimensions, the method and software provided by the present invention greatly reduce the difficulty of modifying and adjusting the cross-geological profile, improves work efficiency, and ensures the accuracy of modeling work. Attached Figure Description

[0019] Figure 1 The overall process of this invention;

[0020] Figure 2 A schematic diagram illustrating how to create a coordinate configuration file for importing 2D cross-sections into a 3D modeling system;

[0021] Figure 3 A schematic diagram of the dialog box for importing 2D profiles and coordinate configuration files into a 3D modeling system;

[0022] Figure 4 A schematic diagram showing the effect of a single two-dimensional section being integrated into a three-dimensional modeling system using the control point method;

[0023] Figure 5 Two-dimensional cross geological profiles are imported into a spatial distribution map of a three-dimensional modeling system.

[0024] Figure 6 A schematic diagram showing the current selected cross geological profile being returned in real time from the 3D modeling system to the 2D map editing system.

[0025] Figure 7 Statistical table of elevation differences at the geological boundary of the same geological attribute at the intersection of intersecting geological profiles;

[0026] Figure 8 A schematic diagram showing the addition of control points along the geological boundary at the intersection of cross geological profiles that are generally coordinated and reasonable.

[0027] Figure 9 A statistical table showing the elevation difference when the control points at the intersection of secondary and primary cross-sections are automatically captured and translated to the control points at the intersection of the primary cross-sections. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments.

[0029] The present invention provides a method for adjusting the boundary of intersecting geological profiles based on real-time linkage in two and three dimensions, such as... Figure 1 As shown, it includes at least the following steps:

[0030] (1) Three-dimensional mapping of two-dimensional geological profiles: Using the pre-drawn draft of the cross geological profile in the two-dimensional map, the cross geological profile data of two different directions are three-dimensionally mapped according to the control point elevation profile method; this step is to convert the already drawn cross geological profile draft into a three-dimensional mapping, and this application does not involve how to draw the two-dimensional cross geological profile draft.

[0031] In this embodiment, the coordinates of the two endpoints of the intersecting geological profile in step (1) are as follows: Figure 2 and Figure 3As shown, in the 2D map editing system, query the coordinates (X1, Y1) of the starting point of the top of the intersecting geological profile on the drawing paper, and record the starting point coordinates and their corresponding 3D space coordinates (X1', Y1', H1') in the configuration file. The configuration file is stored in a TXT text file on the computer. Following the same steps, query the coordinates (X2, Y2) of the ending point of the top of the intersecting geological profile on the drawing paper, and record the ending point coordinates and their corresponding 3D space coordinates (X2', Y2', H2') in the configuration file. Import the configuration file and the intersecting geological profile together into the 3D modeling system, mapping the 2D profile drawing coordinates to 3D space to obtain a 3D profile containing the actual coordinates. Specifically, as shown... Figure 4 and 5 As shown.

[0032] (2) Preliminary assessment of the rationality of geological boundaries: The spatial morphology and contact relationships of the intersecting geological profiles and boundaries are assessed using a 3D modeling system to determine their overall consistency and rationality. Figure 6 As shown, select intersecting geological profiles with inconsistent overall spatial morphology and contact relationships. Transfer the geological boundary of one direction from the 3D modeling system to the 2D map editing system in real time. Mark the intersection of the geological boundary of all geological profiles in the other direction with the current profile with a short horizontal line on the current profile. The inconsistencies in overall spatial morphology and contact relationships of intersecting geological profiles are determined by the geologists themselves. This step is a preliminary screening to identify obvious errors in the geological boundaries of the intersecting geological profiles.

[0033] In step (2), when returning from the 3D modeling system to the 2D map editing system, the idea of ​​using control points to cut the profile is adopted. That is, after selecting any geological boundary line on the profile in the 3D modeling system, the system will generate a 2D projection surface according to the direction of the selected geological boundary line. Other geological boundaries on the current profile will be projected onto the 2D surface, thereby achieving the purpose of returning from 3D to 2D in real time.

[0034] (3) Preliminary modification of geological boundaries: Modify the geological boundaries in step (2) in the two-dimensional map compilation system, map the modified geological boundaries to the three-dimensional modeling system for dynamic display, and repeat step (2) until the geological boundaries on all intersecting geological profiles are coordinated and reasonable as a whole.

[0035] (4) Review the consistency of the lines of the intersecting geological profiles: Using the 3D modeling system, check the consistency of the lines of the intersecting geological profiles that have been initially coordinated and reasonable in steps (2) and (3), return and calculate the elevation difference of the same attribute stratigraphic boundary and the same attribute fault boundary at the intersection of the geological profiles, such as Figure 7As shown, if the obtained elevation difference exceeds the preset allowable error range, the corresponding geological profile will be returned from the 3D modeling system to the 2D map editing system for modification. After modification, it will be linked back to the 3D modeling system in real time to ensure that the elevation difference of all geological profiles in the two directions at the geological boundary at the intersection does not exceed the set accuracy error range.

[0036] In step (4), the 3D modeling system judges the elevation difference of the same attribute stratigraphic boundary and the same attribute fault boundary according to the preset accuracy error range, and returns the corresponding geological profile with the elevation difference exceeding the accuracy error range to the 2D map compilation system. The accuracy error is set according to the preset value required for actual use.

[0037] (5) Add control points to improve accuracy: In the 3D modeling system, check the overall coordinated and reasonable cross-geological profiles that have passed the consistency check in step (4), such as... Figure 8 As shown, the process involves checking if a control point exists within a specified area at the intersection of geological boundaries. If a control point exists within the specified area at the intersection, it is moved to the intersection. If no control point exists within the specified area at the intersection, a control point is added at the intersection. This step saves control point resources by checking if a control point exists at the intersection of geological boundaries and moving it there if so. If no control point exists within the specified area, a new control point is added for control purposes.

[0038] The specified range in step (5) is selected according to the actual situation in actual use. In this embodiment, the specified range error accuracy at the intersection of geological boundaries of a geological profile with a scale of 1:2000 is less than 2 meters, so the accuracy range here is 0 to 2 meters; the specified range error accuracy at the intersection of geological boundaries of a geological profile with a scale of 1:10000 is less than 10 meters, so the accuracy range here is 0 to 10 meters.

[0039] (6) Automatic correction of geological profiles: In the 3D modeling system, the geological boundaries processed in step (5), such as... Figure 9 As shown, based on the regional geological conditions, geologists designate one geological profile as the primary profile and the other as the secondary profile. They use a 3D modeling system to automatically capture the control points at the intersection of the secondary geological profile and uniformly translate them to the control points at the intersection of the primary geological profile, so that the elevation error between the primary and secondary cross profiles at the intersection is zero.

[0040] In step (6), the control points at the intersection of the geological profiles in one direction are uniformly translated using the three-dimensional modeling system based on the geological profile in one direction. After the operations in steps (1) to (5), the remaining elevation difference can be regarded as an error, and the control points are uniformly translated to eliminate the elevation error.

Claims

1. A cross-section boundary adjustment method based on two- or three-dimensional real-time linkage, characterized in that At least comprising the following steps: (1) 3D mapping of 2D geological profiles: using the preliminary draft of cross-sectional geological profiles which have been previously compiled in the 2D drawing compilation system, two cross-sectional geological profiles in different directions are mapped in 3D according to the method of control point vertical profile; (2) preliminary judgment of the rationality of geological boundaries: in the 3D modeling system, the rationality of the overall spatial form and contact relationship of the cross-sectional geological profile boundaries is judged, and the cross-sectional geological profiles with unreasonable overall spatial form and contact relationship are selected, and the geological boundaries in one direction are returned from the 3D modeling system to the 2D drawing compilation system in real time, and the positions of the geological boundaries in all geological profiles in the other direction at the intersection are marked on the current profile with short horizontal lines; (3) preliminary modification of geological boundaries: in the 2D drawing compilation system, the geological boundaries in step (2) are modified, the modified geological boundaries are mapped into the 3D modeling system for dynamic display, and step (2) is repeated until all the geological boundaries on the cross-sectional geological profiles are reasonably coordinated as a whole; (4) review of the consistency of cross-sectional profile lines: using the 3D modeling system, the cross-sectional profile line consistency of the cross-sectional geological profiles which have been preliminarily and reasonably coordinated as a whole in steps (2) and (3) is checked, the elevation difference of the same attribute stratum boundary and the elevation difference of the same attribute fault boundary at the intersection of the geological profiles are returned and calculated, and if the obtained elevation difference exceeds the preset allowable error range, the corresponding geological profiles are returned from the 3D modeling system to the 2D drawing compilation system for modification, and after modification, they are real-time linked to the 3D modeling system to ensure that the elevation difference of the geological boundaries at the intersection of all geological profiles in two directions does not exceed the preset accuracy error range; (5) adding control points for improving accuracy: in the 3D modeling system, the cross-sectional geological profiles which have been reasonably coordinated as a whole after the consistency check in step (4) are checked to find out whether there are control points within the specified range at the intersection of the geological boundaries, if there are control points at the intersection of the geological boundaries within the specified range, they are transferred to the intersection of the geological boundaries, and if there are no control points at the intersection of the geological boundaries within the specified range, control points are added at the intersection of the corresponding geological boundaries; (6) automatic correction of geological profiles: in the 3D modeling system, after the treatment in step (5), according to the regional geological conditions, one of the geological profiles is taken as the main direction profile and the other is taken as the secondary direction profile, the 3D modeling system automatically captures the intersection control points on the secondary direction profile and unifies them to the control points at the intersection of the main direction profile, so that the elevation error of the main and secondary cross-sectional profiles at the intersection is zero. 2.The cross section boundary adjustment method based on two / three-dimensional real-time linkage according to claim 1, characterized in that: The cross geological profile two end point coordinates in step (1) are, in the two-dimensional drawing system, the cross geological profile top start paper coordinates (X1, Y1) are inquired, and the start paper coordinates and the corresponding three-dimensional space real coordinates (X1', Y1', H1') are recorded in the configuration file. The cross geological profile top end paper coordinates (X2, Y2) are inquired in the same step, and the top end paper coordinates and the corresponding three-dimensional space real coordinates (X2', Y2', H2') are recorded in the configuration file. The configuration file and the cross geological profile are imported into the three-dimensional modeling system, so that the two-dimensional profile paper coordinates are mapped to the three-dimensional space, and the three-dimensional profile containing the real coordinates is obtained. 3.The method of claim 1, wherein the method further comprises: determining a boundary of a cross section of a geological profile based on the three-dimensional real-time data. In step (2), when returning to the two-dimensional drawing system by using the three-dimensional modeling system, the idea of controlling point section is adopted, that is, after selecting any geological boundary on the profile in the three-dimensional modeling system, the system will generate a two-dimensional projection plane according to the trend of the selected geological boundary, and other geological boundaries on the current profile will be projected onto the two-dimensional plane, so as to achieve the purpose of returning to two dimensions in real time.

4. The cross section boundary adjustment method based on two / three-dimensional real-time linkage according to claim 1, characterized in that: In step (4), the three-dimensional modeling system judges the elevation difference of the same attribute stratum boundary and the elevation difference of the same attribute fault boundary according to the preset precision error range, and returns the corresponding geological profile with the elevation difference exceeding the precision error range to the two-dimensional drawing system for subsequent modification.

5. The method of claim 1, wherein the method is a method of adjusting a cross section boundary of a cross section based on a two-dimensional or three-dimensional real-time linkage. In step (5), the range error precision is less than 2 meters at the intersection of the geological boundary of the geological profile with a scale of 1:2000; the range error precision is less than 10 meters at the intersection of the geological boundary of the geological profile with a scale of 1:10000.

6. The method of claim 1, wherein the method is a method of adjusting a cross section boundary of a cross section based on a two-dimensional or three-dimensional real-time linkage. In step (6), based on one direction of the geological profile, the three-dimensional modeling system uniformly translates the control points at the intersection of the other geological profile, so as to eliminate the elevation error.

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