A method and system for geological data visualization

Abstract

The present application relates to the technical field of geological data visualization, and particularly relates to a geological data visualization method and system, which obtains a colored geological map with color by coloring CAD geological drawings according to the geology in the drawings, displays the colored geological map in a three-dimensional environment, and sequentially splices the colored geological maps in the same horizontal direction according to the actual exploration position of the colored geological map to obtain a preliminary spliced geological map. The colored geological map with a direction adjustment arc line position is fitted against the shape of a to-be-fitted surface to obtain a preliminary fitted geological map. The preliminary spliced geological map and the preliminary fitted geological map are spliced to obtain a final geological data display map. On the one hand, the geological data in the CAD geological drawings can be displayed by coloring, and on the other hand, the displayed CAD geological drawings can be bent according to actual display requirements, thereby meeting actual use requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geological data visualization, and particularly relates to a geological data visualization method and system. BACKGROUND

[0002] A geological map is a kind of map that represents the formation age of sedimentary rock layers, igneous rock bodies, geological structures and various related geological bodies and geological phenomena on a topographic map of a certain scale using certain legends. It is a general term for maps that represent the crustal surface facies, lithology, stratigraphic age, geological structure, magmatic activity and mineral distribution.

[0003] In actual engineering, although the traditional CAD geological map has high precision, the lines and labels in the map are complex, which reduces the efficiency of the staff in identifying the map, and manual identification of the map may also cause serious construction problems and cause great property losses.

[0004] If actual three-dimensional geological modeling is performed on the site, on the one hand, the cost is increased, and on the other hand, the modeling process is complex, and the information amount expressed by the model carrier is limited, and the geological data collected cannot restore and present the real geological information, so that the three-dimensional geological model established has low precision and poor practicability. SUMMARY

[0005] The present application aims to provide a geological data visualization method and system to solve the problem of low efficiency in identifying the geological profile map.

[0006] The technical problem in the present application is solved by the following solution:

[0007] A geological data visualization method, characterized in that it comprises the following steps:

[0008] S1, a plurality of CAD geological drawings are obtained, and the plurality of CAD geological drawings are colored respectively to obtain a plurality of colored geological drawings;

[0009] S2, the plurality of colored geological drawings are imported into a three-dimensional environment according to actual positions to obtain a plurality of preliminary geological drawings;

[0010] S3, the plurality of preliminary geological drawings are sequentially spliced in the three-dimensional environment according to display requirements to obtain a preliminary spliced geological drawing;

[0011] S4, the shape and position of a to-be-fitted surface in the three-dimensional environment are determined according to display requirements, and the to-be-fitted surface is divided into a plurality of to-be-fitted line segments;

[0012] S5, the preliminary geological drawing is fitted with the to-be-fitted line segment at the corresponding position to obtain a preliminary fitted geological drawing;

[0013] S6, splicing the preliminary splicing geological map and the preliminary fitting geological map to obtain a geological data display map.

[0014] Further limitation, the step S1 includes the following steps:

[0015] S11, obtaining a plurality of CAD geological drawings;

[0016] S12, respectively coloring different geological regions in each CAD geological drawing to obtain corresponding colored geological drawings;

[0017] S13, exporting each colored geological drawing to a corresponding size colored geological drawing according to a display ratio of 1 pixel = 1-10 m.

[0018] Further limitation, the step S4 includes the following steps:

[0019] S41, setting a plurality of sequentially arranged to-be-fitted positioning points according to display requirements;

[0020] S42, obtaining corresponding to-be-fitted curves according to the plurality of to-be-fitted positioning points;

[0021] S43, dividing the to-be-fitted curves into corresponding number of to-be-fitted line segments according to the number of preliminary geological maps corresponding to the to-be-fitted curves.

[0022] Further limitation, the step S5 includes the following steps:

[0023] S51, determining the stretching ratio of the to-be-fitted line segment according to the sum of the distances between the two adjacent to-be-fitted positioning points and the sum of the lengths of all to-be-fitted line segments;

[0024] S52, stretching or compressing the corresponding preliminary geological map in the horizontal direction according to the stretching ratio of the to-be-fitted line segment to obtain a stretched geological map;

[0025] S53, fitting the obtained stretched geological map with the corresponding to-be-fitted line segment to obtain a preliminary fitting geological map.

[0026] Further limitation, the step S53 includes the following steps:

[0027] S531, dividing each to-be-fitted line segment into a plurality of to-be-fitted sub-line segments according to display requirements;

[0028] S532, determining the stretching ratio of each to-be-fitted sub-line segment according to the length of each to-be-fitted line segment and the sum of the lengths of all to-be-fitted sub-line segments in the corresponding to-be-fitted line segment;

[0029] S533, dividing the stretched geological map corresponding to each to-be-fitted line segment into to-be-fitted sub-geological maps equal to the number of corresponding to-be-fitted sub-line segments;

[0030] S534, stretching or compressing the corresponding to-be-fitted sub-geological map along the horizontal direction according to the stretching ratio of the to-be-fitted sub-line segment, to obtain a stretched sub-geological map;

[0031] S535, fitting each stretched sub-geological map with the corresponding to-be-fitted sub-line segment to obtain a preliminary fitted geological map.

[0032] A geological data visualization system, characterized in that it comprises:

[0033] A colored geological map acquisition unit configured to acquire a plurality of CAD geological drawings and perform coloring processing on each of the CAD geological drawings to obtain a plurality of colored geological maps.

[0034] A preliminary geological map acquisition unit configured to import the plurality of colored geological maps into a three-dimensional environment according to actual positions to obtain a plurality of preliminary geological maps.

[0035] A preliminary spliced geological map acquisition unit configured to splice the plurality of preliminary geological maps in the three-dimensional environment according to actual positions to obtain a preliminary spliced geological map.

[0036] A to-be-fitted line segment acquisition unit configured to determine the shape and position of a to-be-fitted surface in the three-dimensional environment according to display requirements, and divide the to-be-fitted surface into a plurality of to-be-fitted line segments.

[0037] A preliminary fitted geological map acquisition unit configured to fit the preliminary geological map with the to-be-fitted line segment at the corresponding position to obtain a preliminary fitted geological map.

[0038] A geological data display map acquisition unit configured to splice the preliminary spliced geological map and the preliminary fitted geological map to obtain a geological data display map.

[0039] With further limitation, the colored geological map acquisition unit comprises:

[0040] A CAD geological drawing acquisition module configured to acquire a plurality of CAD geological drawings.

[0041] A geological coloring map acquisition module configured to perform corresponding coloring processing on different geological regions in each CAD geological drawing to obtain a corresponding geological coloring map.

[0042] A colored geological map acquisition module configured to export each geological coloring map as a colored geological map with a corresponding size according to a display ratio of 1 pixel = 1-10 m.

[0043] With further limitation, the to-be-fitted line segment acquisition unit comprises:

[0044] A to-be-fitted positioning point setting module configured to set a plurality of to-be-fitted positioning points arranged in sequence according to display requirements.

[0045] a to-be-fitted curve obtaining module configured to obtain a to-be-fitted curve corresponding to each of the to-be-fitted positioning points;

[0046] a to-be-fitted line segment obtaining module configured to divide the to-be-fitted curve into a corresponding number of to-be-fitted line segments according to the number of the preliminary geological maps corresponding to the to-be-fitted curve.

[0047] With further limitation, the preliminary fitting geological map obtaining unit comprises:

[0048] a line segment stretch ratio determining module configured to determine a stretch ratio of each to-be-fitted line segment according to a straight-line distance between two ends of the to-be-fitted curve and a sum of lengths of all to-be-fitted line segments;

[0049] a stretched geological map obtaining module configured to stretch or compress the corresponding preliminary geological map along a horizontal direction according to the stretch ratio of the to-be-fitted line segment to obtain a stretched geological map;

[0050] a preliminary fitting geological map obtaining module configured to fit the obtained stretched geological map with the corresponding to-be-fitted line segment to obtain a preliminary fitting geological map.

[0051] With further limitation, the preliminary fitting geological map obtaining module comprises:

[0052] a to-be-fitted sub-line segment obtaining submodule configured to divide each to-be-fitted line segment into a plurality of to-be-fitted sub-line segments according to display requirements;

[0053] a sub-line segment stretch ratio obtaining submodule configured to determine a stretch ratio of each to-be-fitted sub-line segment according to a length of each to-be-fitted line segment and a sum of lengths of all to-be-fitted sub-line segments in the corresponding to-be-fitted line segment;

[0054] a to-be-fitted sub-geological map obtaining submodule configured to divide the stretched geological map corresponding to each to-be-fitted line segment into a number of to-be-fitted sub-geological maps equal to the number of the corresponding to-be-fitted sub-line segments;

[0055] a stretched sub-geological map obtaining submodule configured to stretch or compress the corresponding to-be-fitted sub-geological map along a horizontal direction according to the stretch ratio of the to-be-fitted sub-line segment to obtain a stretched sub-geological map;

[0056] a preliminary fitting geological map obtaining submodule configured to fit each stretched sub-geological map with the corresponding to-be-fitted sub-line segment to obtain a preliminary fitting geological map.

[0057] The present application has the following beneficial effects:

[0058] The application obtains a colored geological map with color by coloring the CAD geological drawing according to the geology in the drawing, displays the colored geological map in a three-dimensional environment, and sequentially splices the colored geological maps in the same horizontal direction to obtain a preliminary spliced geological map according to the actual exploration position of the colored geological map. The colored geological map with the arc line position of the direction adjustment is fitted against the shape of the surface to be fitted to obtain a preliminary fitted geological map. The final geological data display map is obtained by splicing the preliminary spliced geological map and the preliminary fitted geological map. On the one hand, the geological data in the CAD geological drawing can be displayed by coloring, and on the other hand, the CAD geological drawing can be bent according to the actual display requirements, thereby meeting the actual use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1 A geological data visualization method of the application;

[0060] Figure 2 A preliminary spliced geological map of the application;

[0061] Figure 3 A preliminary fitted geological map of the application;

[0062] Figure 4 A geological data display map of the application;

[0063] Figure 5 A geological data visualization system schematic diagram of the application;

[0064] Figure 6 A preliminary fitted geological map acquisition module schematic diagram of the application. DETAILED DESCRIPTION

[0065] Embodiment 1

[0066] Reference Figure 1 The embodiment provides a geological data visualization method, which comprises the following steps:

[0067] S1, a plurality of CAD geological drawings are obtained, and the plurality of CAD geological drawings are respectively subjected to coloring processing to obtain a plurality of colored geological maps.

[0068] Further, step S1 comprises the following steps:

[0069] S11, a plurality of CAD geological drawings are obtained;

[0070] Specifically, in actual use, the geological data involved in the construction process of a tunnel project or a subway project is usually displayed, so in actual exploration, the planned route is usually explored to obtain a corresponding CAD geological drawing, which contains the geological conditions at different depths along the construction line and fills different patterns according to different geological conditions.

[0071] Because the engineering route is long, the obtained CAD geological drawing is also long, so the CAD geological drawing is divided into multiple CAD geological drawings.

[0072] S12, different geological regions in each CAD geological drawing are respectively colored to obtain corresponding geological color drawings;

[0073] Specifically, the different geological regions in the electronic CAD address drawing can be directly colored, so that the same geological conditions are colored the same, ensuring uniform coloring, thereby obtaining multiple colored geological color drawings.

[0074] S13, each geological color drawing is exported as a corresponding size colored geological drawing according to a display ratio of 1 pixel = 1-10 m;

[0075] Specifically, because the CAD address drawing in the CAD address drawing is drawn according to a scale, when converting the CAD file into a JPG format image, in order to avoid the obtained image being too large to increase the loading time and loading cost, on the other hand, in order to facilitate viewing, it is preferred to convert 1-10 m of the actual distance in the geological color drawing into 1 pixel size, preferably a display ratio of 1 m equal to 1 pixel, for example, the actual length of a geological color drawing is 1440 m and the depth is 100 m, then the converted colored geological drawing has 1440 pixels in the horizontal direction and 100 pixels in the vertical direction, i.e. the size of the colored geological drawing is 1440x100 pixels.

[0076] In the conversion, each geological color drawing is converted into a colored geological drawing according to the same display ratio.

[0077] S2, multiple colored geological drawings are imported into a three-dimensional environment according to actual positions to obtain multiple preliminary geological drawings.

[0078] Specifically, each colored geological drawing is imported into the three-dimensional environment according to its actual latitude and longitude coordinate position, thereby obtaining multiple preliminary geological drawings in the three-dimensional environment.

[0079] S3, multiple preliminary geological drawings are sequentially spliced in the three-dimensional environment according to display requirements to obtain a preliminary spliced geological drawing;

[0080] Specifically, reference is made to Figure 2Since the actual tunnel direction adjustment causes the actual tunnel to be an arc mileage or a curved mileage in the overhead view, and there is also a straight line segment mileage in the overhead view, according to the time display requirement, the preliminary geological maps located in the straight line segment mileage are sequentially spliced to obtain the preliminary spliced geological map.

[0081] S4, according to the display requirement, the shape and position of the to-be-fitted surface in the three-dimensional environment are determined, and the to-be-fitted surface is divided into a plurality of to-be-fitted line segments.

[0082] Further, step S4 includes the following steps:

[0083] S41, according to the display requirement, a plurality of to-be-fitted positioning points arranged in sequence are set;

[0084] Specifically, when the actual tunnel is an arc mileage or a curved mileage in the overhead view, according to the display requirement, the inflection points selected during the actual exploration are taken as to-be-fitted positioning points, for example, the angle between two exploration mileages is 170° during the actual exploration, and the vertexes of the two exploration mileages are taken as a to-be-fitted positioning point.

[0085] If there is only one to-be-fitted positioning point, in order to represent the two exploration mileages by a smooth arc line, the external endpoints of the left and right adjacent two preliminary spliced geological maps in the corresponding preliminary spliced geological map are selected as two to-be-fitted positioning points.

[0086] S42, according to the plurality of to-be-fitted positioning points, corresponding to-be-fitted curves are obtained;

[0087] Specifically, the obtained to-be-fitted positioning points are fitted by a curve to obtain corresponding to-be-fitted curves, and the to-be-fitted curves are located between the to-be-fitted positioning points at the beginning and the end.

[0088] S43, according to the number of preliminary geological maps corresponding to the to-be-fitted curve, the to-be-fitted curve is equally divided into a corresponding number of to-be-fitted line segments;

[0089] Specifically, in order to fit each preliminary geological map with the corresponding to-be-fitted curve, the to-be-fitted curve is equally divided into a plurality of to-be-fitted line segments, so that each preliminary geological map at the corresponding position is meaningfully fitted with the to-be-fitted line segment, thereby facilitating the setting of the preliminary geological map along the direction of the to-be-fitted curve.

[0090] S5, the preliminary geological map is fitted with the to-be-fitted line segment at the corresponding position to obtain a preliminary fitted geological map.

[0091] Further, step S5 includes the following steps:

[0092] S51, according to the straight line distance between the two ends of the to-be-fitted curve and the sum of the lengths of all to-be-fitted line segments, the to-be-fitted line segment is determined.

[0093] Specifically, since the curve path length obtained by fitting two line segments with two included angles of 170° through three points is greater than or less than the sum of the lengths of the two line segments, the stretching ratio N = L / l of the to-be-fitted line segment is determined according to the sum l of the distances between two adjacent to-be-fitted positioning points and the sum L of the lengths of all to-be-fitted line segments.

[0094] S52, stretching or compressing the corresponding preliminary geological map in the horizontal direction according to the stretching ratio of the to-be-fitted line segment to obtain a stretched geological map;

[0095] Specifically, if N > 1, it means that the preliminary geological map at the corresponding position needs to be stretched, and if N is less than 1, it means that the preliminary geological map at the corresponding position needs to be compressed. Whether stretching or compression is a horizontal adjustment, the height in the vertical direction does not change, thereby obtaining a stretched geological map.

[0096] S53, fitting the obtained stretched geological map with the corresponding to-be-fitted line segment to obtain a preliminary fitted geological map;

[0097] Specifically, referring to Figure 3 , the obtained stretched geological map is sequentially matched with the corresponding to-be-fitted line segment to obtain a preliminary fitted geological map that is displayed as an approaching curve.

[0098] Further, in order to make the preliminary fitted geological map more approach a curve, step S53 can include the following steps:

[0099] S531, according to display requirements, dividing each to-be-fitted line segment into a plurality of to-be-fitted sub-line segments;

[0100] Specifically, each to-be-fitted curve obtained is divided into a plurality of to-be-fitted sub-line segments. The more to-be-fitted sub-line segments are divided, the closer the displayed preliminary fitted geological map approaches a smooth curve. In order to reduce processing difficulty, the to-be-fitted line segment is usually divided into no more than 5 to-be-fitted sub-line segments.

[0101] S532, determining the stretching ratio of each to-be-fitted sub-line segment according to the length of each to-be-fitted line segment and the sum of the lengths of all to-be-fitted sub-line segments in the corresponding to-be-fitted line segment;

[0102] Specifically, similarly, the length s of each to-be-fitted line segment and the sum S of the lengths of all to-be-fitted sub-line segments in the corresponding to-be-fitted line segment are needed to calculate the stretching ratio n = S / s of each to-be-fitted sub-line segment.

[0103] S533, equally dividing the stretched geological map corresponding to each to-be-fitted line segment into to-be-fitted sub-geological maps equal in number to the corresponding to-be-fitted sub-line segments;

[0104] Specifically, each to-be-fitted line segment corresponds to the equal division of the scalable geological map into a number of to-be-fitted sub-geological maps corresponding to the number of to-be-fitted sub-line segments, so that each scalable geological map obtained in step S52 is divided into a plurality of to-be-fitted sub-geological maps, and the to-be-fitted sub-geological maps correspond to the to-be-fitted sub-line segments one by one.

[0105] S534, stretching or compressing the corresponding to-be-fitted sub-geological map in the horizontal direction according to the scalable ratio of the to-be-fitted sub-line segment to obtain a scalable sub-geological map;

[0106] Specifically, each to-be-fitted sub-geological map is edited in the horizontal direction according to the scalable ratio of the to-be-fitted sub-line segment to obtain a scalable sub-geological map.

[0107] S535, fitting each scalable sub-geological map with the corresponding to-be-fitted sub-line segment to obtain a preliminary fitted geological map;

[0108] Specifically, each scalable sub-geological map is fitted along the direction of the corresponding to-be-fitted sub-line segment to obtain a preliminary fitted geological map.

[0109] S6, splicing the preliminary fitted geological map with the preliminary fitted geological map to obtain a geological data display map, as shown in Figure 4 .

[0110] Embodiment 2

[0111] Reference Figure 5 , the embodiment provides a geological data visualization system, comprising:

[0112] The colored geological map acquisition unit is configured to acquire a plurality of CAD geological drawings and perform coloring processing on the plurality of CAD geological drawings respectively to obtain a plurality of colored geological maps.

[0113] The preliminary geological map acquisition unit is configured to import the plurality of colored geological maps into a three-dimensional environment according to actual positions to obtain a plurality of preliminary geological maps.

[0114] The preliminary spliced geological map acquisition unit is configured to splice the plurality of preliminary geological maps in the three-dimensional environment according to actual positions to obtain a preliminary spliced geological map.

[0115] The to-be-fitted line segment acquisition unit is configured to determine the shape and position of a to-be-fitted surface in the three-dimensional environment according to display requirements, and divide the to-be-fitted surface into a plurality of to-be-fitted line segments.

[0116] The preliminary fitted geological map acquisition unit is configured to fit the preliminary geological map with the to-be-fitted line segment at the corresponding position to obtain a preliminary fitted geological map.

[0117] The geological data display map acquisition unit is configured to splice the preliminary spliced geological map with the preliminary fitted geological map to obtain a geological data display map.

[0118] Further limitation, the colored geological map acquisition unit comprises:

[0119] The CAD geological map paper acquisition module is configured to acquire a plurality of CAD geological map papers.

[0120] The geological coloring map acquisition module is configured to perform corresponding coloring processing on different geological regions in each CAD geological map paper respectively to obtain a corresponding geological coloring map.

[0121] The colored geological map acquisition module is configured to export each geological coloring map as a corresponding size colored geological map according to a display ratio of 1 pixel = 1-10 m.

[0122] Further limitation, the to-be-fitted line segment acquisition unit comprises:

[0123] The to-be-fitted positioning point setting module is configured to set a plurality of to-be-fitted positioning points arranged in sequence according to display requirements.

[0124] The to-be-fitted curve acquisition module is configured to obtain a corresponding to-be-fitted curve according to the plurality of to-be-fitted positioning points.

[0125] The to-be-fitted line segment acquisition module is configured to divide the to-be-fitted curve into a corresponding number of to-be-fitted line segments according to the number of preliminary geological maps corresponding to the to-be-fitted curve.

[0126] Further limitation, the preliminary fitting geological map acquisition unit comprises:

[0127] The line segment stretching ratio determination module is configured to determine a stretching ratio of the to-be-fitted line segment according to a straight line distance between two ends of the to-be-fitted curve and a sum of lengths of all to-be-fitted line segments.

[0128] The stretching geological map acquisition module is configured to stretch or compress a corresponding preliminary geological map along a horizontal direction according to the stretching ratio of the to-be-fitted line segment to obtain a stretching geological map.

[0129] The preliminary fitting geological map acquisition module is configured to fit the obtained stretching geological map with the corresponding to-be-fitted line segment to obtain a preliminary fitting geological map.

[0130] Reference Figure 6 Further limitation, the preliminary fitting geological map acquisition module comprises:

[0131] The to-be-fitted sub-line segment acquisition submodule is configured to divide each to-be-fitted line segment into a plurality of to-be-fitted sub-line segments according to display requirements.

[0132] The sub-line segment stretching ratio acquisition submodule is configured to determine a stretching ratio of each to-be-fitted sub-line segment according to a length of each to-be-fitted line segment and a sum of lengths of all to-be-fitted sub-line segments in the corresponding to-be-fitted line segment.

[0133] The to-be-fitted sub-geological map obtaining submodule is configured to divide the scalable geological map corresponding to each to-be-fitted line segment into to-be-fitted sub-geological maps equal in number to the number of corresponding to-be-fitted sub-line segments;

[0134] The scalable sub-geological map obtaining submodule is configured to stretch or compress the corresponding to-be-fitted sub-geological map along the horizontal direction according to the scalable ratio of the to-be-fitted sub-line segment, to obtain a scalable sub-geological map.

[0135] The preliminary fitted geological map obtaining submodule is configured to fit each scalable sub-geological map with the corresponding to-be-fitted sub-line segment to obtain a preliminary fitted geological map.

Claims

1. A method of geological data visualization, characterized by, The method comprises the following steps: S1, obtaining a plurality of CAD geological drawings, and performing coloring processing on the plurality of CAD geological drawings respectively to obtain a plurality of colored geological maps; S2, importing the plurality of colored geological maps into a three-dimensional environment according to actual positions to obtain a plurality of preliminary geological maps; S3, sequentially splicing the plurality of preliminary geological maps in the three-dimensional environment according to display requirements to obtain a preliminary spliced geological map; S4, determining the shape and position of a to-be-fitted surface in the three-dimensional environment according to display requirements, and dividing the to-be-fitted surface into a plurality of to-be-fitted line segments; Specifically, the step S4 comprises the following steps: S41, setting a plurality of to-be-fitted positioning points arranged in sequence according to display requirements; S42, obtaining a corresponding to-be-fitted curve according to the plurality of to-be-fitted positioning points; S43, equally dividing the to-be-fitted curve into a corresponding number of to-be-fitted line segments according to the number of preliminary geological maps corresponding to the to-be-fitted curve; S5, fitting the preliminary geological map and the to-be-fitted line segment at the corresponding position to obtain a preliminary fitted geological map; The step S5 comprises the following steps: Specifically, S51, determining the stretching ratio of the to-be-fitted line segment according to the sum of the distances between adjacent two to-be-fitted positioning points and the sum of the lengths of all to-be-fitted line segments; S52, stretching or compressing the corresponding preliminary geological map in the horizontal direction according to the stretching ratio of the to-be-fitted line segment to obtain a stretched geological map; S53, fitting the obtained stretched geological map and the corresponding to-be-fitted line segment to obtain a preliminary fitted geological map; S6, splicing the preliminary spliced geological map and the preliminary fitted geological map to obtain a geological data display map.

2. The method for geological data visualization of claim 1, wherein, The step S1 comprises the following steps: S11, obtaining a plurality of CAD geological drawings; S12, performing corresponding coloring processing on different geological regions in each CAD geological drawing to obtain corresponding geological coloring maps; S13, exporting each geological coloring map as a colored geological map of a corresponding size according to a display ratio of 1 pixel = 1-10 m.

3. The method for geological data visualization of claim 1, wherein, The step S53 comprises the following steps: S531, dividing each to-be-fitted line segment into a plurality of to-be-fitted sub-line segments according to display requirements; S532, determining the stretching ratio of each to-be-fitted sub-line segment according to the length of each to-be-fitted line segment and the sum of the lengths of all to-be-fitted sub-line segments in the corresponding to-be-fitted line segment; S533, equally dividing the stretched geological map corresponding to each to-be-fitted line segment into to-be-fitted sub-geological maps equal in number to the number of corresponding to-be-fitted sub-line segments; S534, stretching or compressing the corresponding to-be-fitted sub-geological map in the horizontal direction according to the stretching ratio of the to-be-fitted sub-line segment to obtain a stretched sub-geological map; S535, fitting each stretched sub-geological map and the corresponding to-be-fitted sub-line segment to obtain a preliminary fitted geological map.

4. A geological data visualization system characterized by, The method comprises: a colored geological map acquisition unit, configured to obtain a plurality of CAD geological drawings, and perform coloring processing on the plurality of CAD geological drawings respectively to obtain a plurality of colored geological maps; a preliminary geological map acquisition unit, configured to import the plurality of colored geological maps into a three-dimensional environment according to actual positions to obtain a plurality of preliminary geological maps; The preliminary spliced geological map obtaining unit is configured to splice multiple preliminary geological maps according to their actual positions in the three-dimensional environment to obtain a preliminary spliced geological map; The to-be-fitted line segment obtaining unit is configured to determine the shape and position of the to-be-fitted surface in the three-dimensional environment according to display requirements, and divide the to-be-fitted surface into multiple to-be-fitted line segments; Specifically, the to-be-fitted line segment obtaining unit includes: The to-be-fitted positioning point setting module is configured to set multiple to-be-fitted positioning points arranged in sequence according to display requirements; The to-be-fitted curve obtaining module is configured to obtain a to-be-fitted curve corresponding to the multiple to-be-fitted positioning points; and The to-be-fitted line segment obtaining module is configured to divide the to-be-fitted curve into a corresponding number of to-be-fitted line segments according to the number of preliminary geological maps corresponding to the to-be-fitted curve; The preliminary fitted geological map obtaining unit is configured to fit the preliminary geological maps with the to-be-fitted line segments at corresponding positions to obtain a preliminary fitted geological map; Specifically, the preliminary fitted geological map obtaining unit includes: The line segment stretching ratio determining module is configured to determine the stretching ratio of the to-be-fitted line segments according to the straight-line distance between the two ends of the to-be-fitted curve and the sum of the lengths of all the to-be-fitted line segments; The stretched geological map obtaining module is configured to stretch or compress the corresponding preliminary geological map along the horizontal direction according to the stretching ratio of the to-be-fitted line segments to obtain a stretched geological map; and The preliminary fitted geological map obtaining module is configured to fit the obtained stretched geological map with the corresponding to-be-fitted line segments to obtain a preliminary fitted geological map; and The geological data display map obtaining unit is configured to splice the preliminary spliced geological map and the preliminary fitted geological map to obtain a geological data display map.

5. The geologic data visualization system of claim 4, wherein, The colored geological map obtaining unit includes: The CAD geological map paper obtaining module is configured to obtain multiple CAD geological map papers; The geological coloring map obtaining module is configured to perform corresponding coloring processing on different geological regions in each CAD geological map paper to obtain a corresponding geological coloring map; and The colored geological map obtaining module is configured to export each geological coloring map as a corresponding size colored geological map according to a display ratio of 1 pixel = 1-10 m.

6. The geologic data visualization system of claim 5, wherein, The preliminary fitted geological map obtaining module includes: The to-be-fitted sub-line segment obtaining submodule is configured to divide each to-be-fitted line segment into multiple to-be-fitted sub-line segments according to display requirements; The sub-line segment stretching ratio obtaining submodule is configured to determine the stretching ratio of each to-be-fitted sub-line segment according to the length of each to-be-fitted line segment and the sum of the lengths of all the to-be-fitted sub-line segments in the corresponding to-be-fitted line segment; The to-be-fitted sub-geological map obtaining submodule is configured to divide the stretched geological map corresponding to each to-be-fitted line segment into to-be-fitted sub-geological maps equal in number to the corresponding to-be-fitted sub-line segments; The stretched sub-geological map obtaining submodule is configured to stretch or compress the corresponding to-be-fitted sub-geological map along the horizontal direction according to the stretching ratio of the to-be-fitted sub-line segment to obtain a stretched sub-geological map; and The preliminary fitted geological map obtaining submodule is configured to fit each stretched sub-geological map with the corresponding to-be-fitted sub-line segment to obtain a preliminary fitted geological map.

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