Graphical geological logging method and device for geological section

Abstract

The invention relates to the technical field of geological logging, discloses a graphical geological logging method and device for a geological section, and aims at solving the problem that an existing geological section logging method is poor in accuracy and efficiency. Defining a control point on the section line; respectively generating a vertical section corresponding to a line segment between adjacent control points, and generating a two-dimensional expansion graph of the geological section; drawing a coordinate grid of a two-dimensional expansion graph according to the two-dimensional local coordinate system, and projecting the drilled hole into the two-dimensional expansion graph in a histogram form; delineating a geological outcrop line and a geological boundary line of a geological body based on the two-dimensional expansion map; setting the geological features and the defined geological boundary as an engineering dictionary, and inputting geological attribute information of the geological section; and establishing a mapping relation between the two-dimensional local coordinate system and the engineering overall coordinate system. The method improves the accuracy and efficiency of mass profile logging, and is especially suitable for geological exploration.

Description

Technical Field

[0001] The present application relates to the technical field of geological logging, and in particular to a method and device for graphically logging a geological profile. Background Art

[0002] Geological exploration is a common means of understanding geological conditions before engineering construction. In addition to common drilling, geological profiles are often drawn during the construction of large-scale infrastructure to reflect structural morphology. During the construction of underground projects, geological profiles can be used to intuitively understand the distribution, thickness, lithology and other information of the strata, and then infer geological conditions such as geological structure and sedimentary environment. In mineral exploration, geological profiles are also one of the important tools for finding mineral resources. For this reason, some industries require the geological cataloging of geological profiles to record and describe in detail the geological conditions (outcrops) revealed by geological profiles. As a supplement and auxiliary material for geological records, they are widely used in engineering construction and geological disaster prevention and control.

[0003] With the popularity of mobile electronic devices such as tablet computers, the prior art has studied the cataloging method of using electronic coordinate paper to replace paper coordinate paper. For example, application publication number CN106777155A discloses a geological cataloging method based on electronic centimeter paper. This method draws electronic display maps for different geological objects, establishes a two-dimensional coordinate system according to a fixed size, performs electronic sketching, and then extracts spatial information in the two-dimensional local coordinates through vector graphics. This method realizes the integration of indoor and outdoor work through electronic cataloging, omits the manual input process of indoor work, and can improve work efficiency. However, this method does not involve the electronic cataloging method of geological profiles, and there are still three defects. First, the geological exploration data are independent of each other, and the previous results lack uniformity in the overall engineering coordinates, that is, the independent profiles cannot restore the three-dimensional spatial information of the site as a whole, and it is difficult to establish the spatial relationship with other exploration methods (such as drilling), which directly affects the utilization rate of the cataloged data and cannot be directly used for three-dimensional geological modeling and spatial analysis. Secondly, the spatial topological relationship of geological boundaries is ignored. This method does not define the characteristics of the undulating changes in terrain lines, so the topological relationship of the strata cannot be correctly expressed in the form of segment bodies. The geological attribute information is mainly based on the description of phenomena and lacks attention to the internal relationship. This method does not have the ability to catalog as a whole. The cataloging maps of each part are independent of each other, and the integrity and continuity of the geological outcrop cataloging results after restoring the three-dimensional data cannot be guaranteed. Third, the standardization of the description of geological attribute information is insufficient. The description of geological characteristics is greatly affected by the cognitive ability and experience of on-site geologists, which affects the quality of basic data. Summary of the invention

[0004] The present application aims to solve the problems of poor accuracy and efficiency in existing geological profile recording methods, and proposes a graphical geological recording method and device for geological profiles.

[0005] The technical solution adopted by this application to solve the above technical problems is:

[0006] In a first aspect, the present application provides a method for graphically recording geological profiles, the method comprising:

[0007] The spatial position of the section line of the geological section is described by using the engineering overall coordinate system, and control points are defined on the section line, wherein the control points include the starting point, the inflection point and the end point of the section line, and the three-dimensional model of the geological section is present in the engineering overall coordinate system;

[0008] Based on the basic parameters of the geological section, the vertical sections corresponding to the line segments between the adjacent control points are generated respectively. Taking the starting point as the base point, the section line is stretched into a flat straight line segment and the vertical sections are connected in series. The section line and the corresponding vertical sections are placed in a two-dimensional local coordinate system to generate a two-dimensional unfolded view of the geological section.

[0009] Draw a coordinate grid of the two-dimensional development diagram according to the two-dimensional local coordinate system, and project the drill holes within the preset distance range of the section line into the two-dimensional development diagram in the form of a bar chart;

[0010] Based on the two-dimensional development map, a geological outcrop line is drawn. For a geological body in a geological section, a geological boundary of the geological body is drawn according to the relationship between the geological outcrop line and the control points of the section line and the geological characteristics, so as to reflect the topological relationship between the geological bodies.

[0011] Setting the geological features and defined geological boundaries as an engineering dictionary, and entering geological attribute information of the geological section according to the engineering dictionary;

[0012] A mapping relationship between the two-dimensional local coordinate system and the overall engineering coordinate system is established. When outlining is performed in the two-dimensional unfolded view corresponding to the two-dimensional local coordinate system, the corresponding position of the outline is mapped to the three-dimensional model in the overall engineering coordinate system according to the mapping relationship, and the corresponding geological attribute information is associated.

[0013] Furthermore, the basic parameters of the geological profile include the coordinates of the control points, the length of the profile line, and the top elevation and bottom elevation of the geological profile.

[0014] Furthermore, the section line of the geological section is a geological observation route, a site exploration layout line or a surface tangent along a preset direction.

[0015] Furthermore, the geological boundaries of the geological body are delineated according to the relationship between the geological outcrop line and the control points of the profile line and the geological characteristics, including:

[0016] For continuously arranged geological bodies, the lower boundary of the previous geological body is the upper boundary of the next geological body; for discontinuously arranged geological bodies, if the geological body is a joint, the upper boundary and the lower boundary are merged into an independent geological boundary; if the geological body is a fracture, the upper boundary is offset downward according to the thickness of the fracture to generate the lower boundary.

[0017] Furthermore, the geological boundaries of the geological bodies are delineated according to the relationship between the geological outcrop line and the control points of the profile line and the geological characteristics, which specifically includes:

[0018] For a single geological body, if the geological body is an intrusive body, the geological boundary is a closed line; if the geological body is a groundwater linear seepage, the geological boundary is a single line; if the geological body is a groundwater pore seepage, the geological boundary is a pore-shaped closed line.

[0019] Furthermore, the continuously arranged geological objects at least include stratum lithology, rock mass structural segmentation, weathering zone, unloading zone, groundwater segmentation and karst, and the discontinuously arranged geological objects at least include structural surfaces, unfavorable geological bodies and sliding surfaces.

[0020] Furthermore, the descriptive indicators of geological characteristics recorded in the engineering dictionary include: stratum information, fault information, joint information, weathering information and unloading information.

[0021] Furthermore, the method further comprises:

[0022] The azimuth of each control point of the profile line is determined in the overall coordinate system of the project, and the azimuth is marked at the corresponding position in the two-dimensional unfolded view.

[0023] In a second aspect, the present application provides a graphical geological logging device for a geological section, wherein the device is used to implement the steps of the graphical geological logging method for a geological section as described in the first aspect.

[0024] The beneficial effects of the present application are as follows: the graphical geological cataloging method and device for geological profiles provided by the present application avoid the problem of low efficiency of traditional paper-based cataloging methods, accurately describe the spatial topological relationship between geological bodies through defined geological boundaries, and use engineering dictionaries to achieve standardized description of geological attribute information. The geological profile cataloging results are spatially unified and can be associated with other geological data for review and analysis, which reduces the subjectivity and uncertainty in the drawing process, improves the accuracy of geological cataloging, and eliminates the need for manual coordinate conversion of cataloged data. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the flow structure of a graphical geological logging method for a geological section provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the spatial position structure of a geological section in the overall engineering coordinate system provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of a structure for outlining a geological outcrop line in a two-dimensional development diagram provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of a structure for outlining geological boundaries in a two-dimensional unfolded diagram provided in an embodiment of the present application;

[0029] Figure 5 A structural schematic diagram of restoring geological cataloging results to an overall engineering coordinate system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0031] The technical solution of the embodiment of the present application is applicable to application scenarios where geological cataloging of geological sections is required. The existing geological section cataloging methods have the following problems: the cataloging results lack spatial uniformity, cannot be associated with other geological data for review and analysis, the spatial topological relationship of geological bodies is incorrectly described in the existing geological section cataloging process, the description of geological attribute information is not standardized enough, there is a large degree of subjectivity and uncertainty in the drawing process, the map accuracy is relatively low, the coordinate conversion of the cataloging data is cumbersome, and the traditional paper-based cataloging method is inefficient.

[0032] Based on this, the technical solution of the present application is proposed. In the embodiment of the present application, the engineering overall coordinate system is used to describe the spatial position of the section line of the geological section, and control points are defined on the section line, and the control points include the starting point, inflection point and end point of the section line. The engineering overall coordinate system has a three-dimensional model of the geological section; based on the basic parameters of the geological section, vertical sections corresponding to the line segments between adjacent control points are generated respectively, and with the starting point as the base point, the section line is stretched into a straight line segment and the vertical sections are connected in series, and then the section line and the corresponding vertical sections are placed in a two-dimensional local coordinate system to generate a two-dimensional unfolded view of the geological section; the coordinate grid of the two-dimensional unfolded view is drawn according to the two-dimensional local coordinate system, and the drill bits within a preset distance range of the section line are placed in the coordinate grid of the two-dimensional unfolded view. The holes are projected onto a two-dimensional development map in the form of a bar graph; geological outcrop lines are outlined based on the two-dimensional development map, and for geological bodies in geological sections, geological boundaries of geological bodies are defined according to the relationship between the geological outcrop lines and the control points of the section lines and geological features, so as to reflect the topological relationship between geological bodies; the geological features and the defined geological boundaries are set as an engineering dictionary, and geological attribute information of the geological section is entered according to the engineering dictionary; a mapping relationship between the two-dimensional local coordinate system and the engineering overall coordinate system is established, and when outlining is performed in the two-dimensional development map corresponding to the two-dimensional local coordinate system, the corresponding position of the outline is mapped to the three-dimensional model in the engineering overall coordinate system according to the mapping relationship, and the corresponding geological attribute information is associated.

[0033] Specifically, the embodiment of the present application first generates the spatial form of the geological section in the overall coordinate system of the project, that is, the spatial position of the geological section in the overall coordinate system of the project is described according to the section line of the geological section and its corresponding vertical section, and then the geological section in the overall coordinate system of the project is unfolded to obtain a two-dimensional unfolded diagram in the two-dimensional local coordinate system, and the boreholes near the geological section are projected into the two-dimensional unfolded diagram in the form of a bar chart, and then two-dimensional cataloging is performed by drawing a two-dimensional unfolded diagram of the coordinate grid. The two-dimensional cataloging mainly includes the cataloging personnel drawing geological outcrop lines and geological boundaries of various geological bodies in the two-dimensional unfolded diagram to reflect the topological relationship between the geological bodies, and then using the engineering dictionary to enter the geological attribute information of the geological section, and finally automatically establishes a mapping relationship between the two-dimensional local coordinate system and the overall coordinate system of the project. When the cataloging personnel perform geological cataloging in the two-dimensional unfolded diagram, the corresponding position of the cataloging is automatically mapped to the overall coordinate system of the project, and the three-dimensional coordinate information can be obtained without the help of coordinate conversion, thereby achieving the effect of restoring the two-dimensional graphical geological cataloging to three-dimensional space. This avoids the low efficiency of traditional paper-based cataloging methods. The spatial topological relationship between geological bodies is accurately described through the defined geological boundaries, and the standardized description of geological attribute information is achieved using engineering dictionaries. The geological profile cataloging results are spatially unified and can be linked to other geological data for review and analysis, reducing the subjectivity and uncertainty in the drawing process, improving the accuracy of geological cataloging, and eliminating the need for manual coordinate conversion of cataloged data.

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0035] See also Figure 1 The graphical geological logging method of the geological section provided in the embodiment of the present application comprises the following steps:

[0036] S1. Use the overall engineering coordinate system to describe the spatial position of the section line of the geological section, and define control points on the section line, wherein the control points include the starting point, inflection point and end point of the section line, and the overall engineering coordinate system has a three-dimensional model of the geological section.

[0037] It can be understood that the overall coordinate system of the project is a coordinate system established on the overall structure, also known as a unified coordinate system. In the field of engineering, in order to measure and plan the overall structure, it is necessary to establish a unified coordinate system, i.e., the overall coordinate. This coordinate system is unique within the entire project and is used to ensure that the position and size of each part remain consistent and accurate throughout the project. The establishment of an overall coordinate system helps to achieve the accuracy of engineering design and the convenience of construction because it provides a standardized reference framework so that measurements and calculations of different parts can be performed on the same basis. In an embodiment of the present application, the overall coordinate system of the project has a three-dimensional model of a geological profile.

[0038] In the embodiment of the present application, the spatial position of the section line (characteristic line) of the geological section is first described using the overall engineering coordinates and the control points of the section line are defined. The section line is connected by the control points, which are the segmentation points on the section line. The control points include the starting point, end point and inflection point of the section line. In actual application, the three-dimensional spatial coordinates of the starting point, end point and inflection point are input, and the depth stake number (section line length) of the section line is automatically calculated according to the three-dimensional spatial coordinates of the control points.

[0039] S2. Based on the basic parameters of the geological section, the vertical sections corresponding to the line segments between each adjacent control point are generated respectively. Taking the starting point as the base point, the section line is stretched into a straight line segment and the vertical sections are connected in series. Then, the section line and the corresponding vertical sections are placed in a two-dimensional local coordinate system to generate a two-dimensional unfolded view of the geological section.

[0040] In the embodiment of the present application, the basic parameters of the geological section include the coordinates of the control points, the length of the section line, and the top elevation and bottom elevation of the geological section.

[0041] In practical applications, after the basic parameters of the geological profile are input, the profile line is segmented, each segment is a line segment between two control points, and then the vertical profile corresponding to each segment is generated. Figure 2 The section line is composed of a starting point, multiple inflection points and an end point connected in sequence. According to the top and bottom elevations of the geological section, the spatial form of the geological section in the overall engineering coordinate system is established along the vertical direction of the section line, that is, a vertical folded surface is formed in the three-dimensional space. Then, the section line is stretched into a straight section along the mileage pile number in the two-dimensional local coordinate system. Finally, the electronic display diagrams of the vertical folded surfaces corresponding to each segment are connected in series along the section line pile number to form a complete two-dimensional unfolded diagram of the geological section, such as Figure 3 and Figure 4 In order to facilitate geological cataloging by catalogers, the length and width of the two-dimensional development diagram of the geological section at the boundary position can be enlarged by 1 cm respectively.

[0042] In practical applications, if the profile line is a straight section, it is only necessary to define the starting point and the end point to generate a straight profile line. Based on the spatial information carried by the profile line and combined with the basic parameters of the geological profile, the spatial form and position of the geological profile in the three-dimensional overall coordinate system can be determined. If the profile line is a non-straight section, involving a bend or a slope drop, the turning point in the control point is the turning point of the profile line, which is also the turning point of the geological profile. The geological profile generated in the three-dimensional overall coordinate system according to the basic parameters of the geological profile is in the form of a folded surface.

[0043] In practical applications, if the profile line is a field geological observation line, a two-dimensional development map can be generated according to the determined scale and observed geological information and the elevation range of each section of the profile line. If the profile line is a site exploration layout line or a surface tangent along a certain direction, showing the actual (or inferred) section of the geological structure on the surface or within a certain depth, exploration data can be obtained through field measurement, sampling, experimental analysis and other means, directly linked to the drilling layer data, and the geometric information, attribute information and other exploration data of all geological outcrops can be uniformly converted into the same overall engineering coordinate system for mutual comparison, verification and correction, and finally a two-dimensional development map can be generated according to a certain scale.

[0044] In the embodiment of the present application, the azimuth of each control point of the profile line is also determined in the overall engineering coordinate system, and the azimuth is marked at the corresponding position in the two-dimensional unfolded diagram. The azimuth is used to represent the direction of the profile line and the geological profile, which can be automatically calculated by the relative orientation of two adjacent control points on the profile line on the vertical plane. If the profile line is a non-straight section, the azimuth at the inflection point will be inconsistent with the previous section, such as Figure 3 and Figure 4 As shown, the azimuth after the turning point changes from ES~51° to EN~41°. If the profile line is a straight section, the azimuth after the turning point remains consistent with the previous section.

[0045] S3. Draw a coordinate grid of the two-dimensional unfolded view according to the two-dimensional local coordinate system, and project the drill holes within the preset distance range of the profile line into the two-dimensional unfolded view in the form of a bar chart.

[0046] It can be understood that the electronic two-dimensional display diagram of the geological section follows the local two-dimensional coordinate system and maintains the correct spatial relationship with other exploration objects (such as boreholes); the position of the two-dimensional local coordinate system in the three-dimensional overall coordinate system is found with the starting point of the section line as the base point, and the two-dimensional display diagram of the geological section follows the local two-dimensional coordinate system. The local two-dimensional coordinate system uses electronic rice grid paper to generate a coordinate grid, and the size of the coordinate grid is determined according to the length of the section line and the top and bottom elevations of the geological section. In the embodiment of the present application, the electronic rice grid paper is 1cm×cm square paper, and its minimum scale is 1mm×1mm. The on-site cataloging personnel draw the two-dimensional coordinate grid of the two-dimensional expansion diagram according to the ratio of 1:100.

[0047] In the embodiment of the present application, the previous achievements maintain the unity in terms of the overall engineering coordinates. Based on the drilling data explored in advance, the drilling holes near the section line can be projected onto the geological section in the form of a bar graph through computer graphics technology, such as Figure 3 and Figure 4 As shown, the borehole column chart does not need to be drawn manually. The system projects the exploration data near the profile line or on the exploration line onto the geological profile and converts it into true thickness, then automatically expresses it on the geological profile in the form of a column chart in the order of the upper and lower strata (the borehole data within 20m of the profile line is projected onto the two-dimensional expansion diagram).

[0048] S4. Outline geological outcrop lines based on the two-dimensional development map. For geological bodies in geological sections, outline geological boundaries of geological bodies according to the relationship between the geological outcrop lines and the control points of the section lines and geological features to reflect the topological relationship between geological bodies.

[0049] See also Figure 3 , geological cataloging personnel can directly electronically and graphically catalog the geological outcrops on the two-dimensional development map based on the bar chart, thereby reflecting the stratigraphic connection relationship. Specifically, they can draw the specific position of the geological outcrop line in the two-dimensional local coordinate system based on the outcrop line elevation and mileage pile number measured on site.

[0050] Then, for thick geological bodies, it is necessary to outline their geological boundaries according to the relationship between the outcrop line and the starting point of the profile line and the characteristics of the geological body to reflect the topological relationship between the geological bodies. The topological relationship includes the up-down relationship and the new-old relationship. The upper and lower boundaries of the geological body include the stratigraphic boundary, the top and bottom plate interface of the fault, the start and end boundaries of weathering unloading, etc.

[0051] See also Figure 4 In practical applications, for continuously arranged geological bodies, the lower boundary of the previous geological body is the upper boundary of the next geological body; for discontinuously arranged geological bodies, if the geological body is a joint, the upper boundary and the lower boundary are merged into an independent geological boundary; if the geological body is a fissure, the upper boundary is offset downward according to the thickness of the fissure to generate the lower boundary; for a single geological body, if the geological body is an intrusive body, the geological boundary is a closed line; if the geological body is a linear seepage of groundwater, the geological boundary is a single line; if the geological body is a porous seepage of groundwater, the geological boundary is a porous closed line.

[0052] In practical applications, when the upper and lower boundary thicknesses of a non-continuously arranged geological body are less than 0.3m, the geological body is defined as a joint; when the upper and lower boundary thicknesses are ≥0.3m, the geological body is defined as a fracture. The system will offset the upper boundary downward according to the input fracture thickness and automatically generate the lower boundary. The portion enclosed by the upper and lower boundaries is the range segment of the geological body.

[0053] Among them, the continuously arranged geological objects at least include stratum lithology, rock structure segmentation, weathering zone, unloading zone, groundwater segmentation and karst, and the discontinuously arranged geological objects at least include structural surfaces, unfavorable geological bodies and sliding surfaces.

[0054] S5. The geological features and defined geological boundaries are set as an engineering dictionary, and geological attribute information of the geological section is input according to the engineering dictionary.

[0055] Specifically, geological features and topological relationships are set into an engineering dictionary, and the engineering dictionary is used to record the geological topological relationships and geological feature descriptions of given engineering geological body outcrops, to achieve graphical and standardized geological cataloging. By establishing a standardized engineering dictionary and electronic operating methods, the professional rationality of the cataloging results can be improved.

[0056] In practical applications, the description of geological characteristics recorded in the engineering dictionary includes: stratigraphic information, fault information, joint information, weathering information, unloading information and other characteristic indicators carried in the geological description. Taking the stratigraphic information of the site as an example, the engineering dictionary value needs to define the stratigraphic code of the proven strata of the site, specify whether it is a large layer and set the stratigraphic sequence, and define the rock and soil name, rock and soil class name, geological origin, stratigraphic age, age code, boundary, system, system, geological description and other public information corresponding to the stratum. The defined geological characteristic dictionary value can be directly called when a thick geological body is outlined in the electronic display map of the geological section. As geological attribute information, the engineering dictionary of geological characteristics is defined according to standards and specifications (such as fault type, filling type, etc.), which is not affected by the cognitive ability and experience of on-site geologists, and greatly improves the standardization of geological description.

[0057] The topological relationship of geological outcrops is recorded with an engineering dictionary, that is, the connection within the geological boundary is established according to the defined topological relationship, and the corresponding geological boundary data is directly called when conducting geological three-dimensional modeling and statistical analysis; it is convenient for the subsequent analysis of the overall geological object, and can be directly linked to the corresponding geological boundary that has been determined on site, reducing the subsequent large-scale data processing, such as three-dimensional geological stratification, layer thickness statistics, structural surface thickness statistics, etc., which require manual re-matching due to the lack of on-site related data reference and result in a large number of errors.

[0058] S6. Establish a mapping relationship between the two-dimensional local coordinate system and the overall coordinate system of the project. When outlining in the two-dimensional unfolded view corresponding to the two-dimensional local coordinate system, map the outlined corresponding position to the three-dimensional model in the overall coordinate system of the project according to the mapping relationship, and associate the corresponding geological attribute information.

[0059] In practical applications, the above method can be compiled into software that can be run on electronic devices such as tablet computers using computer graphics technology to realize the electronic and graphical cataloging of geological sections, ensuring that the cataloging results follow the unified overall engineering coordinates; the geological section cataloging area is input into mobile devices such as tablet computers, and the flower pole elevation, section line control point stake number, borehole columnar projection, two-dimensional local coordinate system and two-dimensional development diagram are matched. When outlining the geological body outcrop line, the computer matrix array conversion technology is used to automatically establish the mapping relationship between the coordinate system of the on-site two-dimensional development diagram and the overall engineering coordinate system, such as Figure 5 As shown, when any point is picked up in the two-dimensional display according to the local two-dimensional coordinates, the point is automatically mapped to the three-dimensional model of the geological section. The sketching process continuously captures the three-dimensional coordinates of the outcrop line and catalogs the corresponding geological attribute information. The geological attribute information is associated with the three-dimensional space through the two-dimensional cataloging method. The three-dimensional coordinate information can be obtained during the two-dimensional cataloging process without the help of coordinate conversion, thereby achieving the effect of restoring the two-dimensional graphical geological cataloging to the three-dimensional space.

[0060] In summary, the graphical geological cataloging method of geological profiles provided in the embodiments of the present application avoids the problem of low efficiency of traditional paper-based cataloging methods, accurately describes the spatial topological relationship between geological bodies through defined geological boundaries, and uses engineering dictionaries to achieve standardized description of geological attribute information. The geological profile cataloging results are spatially unified and can be associated with other geological data for review and analysis, which reduces the subjectivity and uncertainty in the drawing process, improves the accuracy of geological cataloging, and eliminates the need for manual coordinate conversion of cataloged data.

[0061] Based on the above technical solution, this embodiment also proposes a graphical geological logging device for a geological profile, which is used to implement the steps of the graphical geological logging method for a geological profile as described in the embodiment of the present application.

[0062] It can be understood that since the graphical geological cataloging device for geological profiles described in the embodiment of the present application is a device for implementing the graphical geological cataloging method for geological profiles described in the embodiment, for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method, which will not be repeated here.

Claims

1. A graphical geological logging method for a geological section, characterized in that: The method comprises: The spatial position of the section line of the geological section is described by using the engineering overall coordinate system, and control points are defined on the section line, wherein the control points include the starting point, the inflection point and the end point of the section line, and the three-dimensional model of the geological section is present in the engineering overall coordinate system; Based on the basic parameters of the geological section, the vertical sections corresponding to the line segments between the adjacent control points are generated respectively. Taking the starting point as the base point, the section line is stretched into a flat straight line segment and the vertical sections are connected in series. The section line and the corresponding vertical sections are placed in a two-dimensional local coordinate system to generate a two-dimensional unfolded view of the geological section. Draw a coordinate grid of the two-dimensional development diagram according to the two-dimensional local coordinate system, and project the drill holes within the preset distance range of the section line into the two-dimensional development diagram in the form of a bar chart; Based on the two-dimensional development map, a geological outcrop line is drawn. For a geological body in a geological section, a geological boundary of the geological body is drawn according to the relationship between the geological outcrop line and the control points of the section line and the geological characteristics, so as to reflect the topological relationship between the geological bodies. Setting the geological features and defined geological boundaries as an engineering dictionary, and entering geological attribute information of the geological section according to the engineering dictionary; A mapping relationship between the two-dimensional local coordinate system and the overall engineering coordinate system is established. When outlining is performed in the two-dimensional unfolded view corresponding to the two-dimensional local coordinate system, the corresponding position of the outline is mapped to the three-dimensional model in the overall engineering coordinate system according to the mapping relationship, and the corresponding geological attribute information is associated.

2. The method for graphically recording geological profiles according to claim 1, characterized in that: The basic parameters of the geological section include the coordinates of the control points, the length of the section line, and the top elevation and bottom elevation of the geological section.

3. The method for graphically recording geological profiles according to claim 1, characterized in that: The section line of the geological section is a geological observation route, a site exploration layout line or a surface tangent line along a preset direction.

4. The method for graphically recording geological profiles according to claim 1, characterized in that: The geological boundaries of the geological body are delineated according to the relationship between the geological outcrop line and the control points of the profile line and the geological characteristics, including: For continuously arranged geological bodies, the lower boundary of the previous geological body is the upper boundary of the next geological body; for discontinuously arranged geological bodies, if the geological body is a joint, the upper boundary and the lower boundary are merged into an independent geological boundary; if the geological body is a fracture, the upper boundary is offset downward according to the thickness of the fracture to generate the lower boundary.

5. The method for graphically recording geological profiles according to claim 4, characterized in that: The geological boundaries of the geological body are delineated based on the relationship between the geological outcrop line and the control points of the profile line and the geological characteristics, including: For a single geological body, if the geological body is an intrusive body, the geological boundary is a closed line; if the geological body is a groundwater linear seepage, the geological boundary is a single line; if the geological body is a groundwater pore seepage, the geological boundary is a pore-shaped closed line.

6. The graphical geological logging method of the dam base plate according to claim 4, characterized in that: The continuously arranged geological objects at least include stratum lithology, rock mass structural segmentation, weathering zone, unloading zone, groundwater segmentation and karst, and the discontinuously arranged geological objects at least include structural surfaces, unfavorable geological bodies and sliding surfaces.

7. The method for graphically recording geological profiles according to claim 1, characterized in that: The descriptive indicators of geological characteristics recorded in the engineering dictionary include: stratum information, fault information, joint information, weathering information and unloading information.

8. The method for graphically recording geological profiles according to claim 1, characterized in that: The method further comprises: The azimuth of each control point of the profile line is determined in the overall coordinate system of the project, and the azimuth is marked at the corresponding position in the two-dimensional unfolded view.

9. A graphical geological recording device for geological sections, characterized in that: The device is used to implement the steps of the graphical geological logging method of a geological section as described in any one of claims 1 to 8.

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