Head-of-path element-assisted three-dimensional underground space modeling method, equipment and medium

Abstract

The invention relates to the field of three-dimensional geological modeling, and discloses a path center element assisted three-dimensional underground space modeling method and device and a medium, and the method comprises the steps: importing path center point data of underground space modeling into a three-dimensional underground space system; setting a path center element influence radius; according to the centroid point data and the set influence radius, finishing centroid region drawing; constructing section centroid elements according to the centroid region, and completing three-dimensional display; according to the method, the accuracy of three-dimensional underground space modeling is improved, in addition, the application range is wide, the method can be applied to distribution characteristics of underground space mineral products, the optimal excavation scheme is obtained, and therefore economic benefits are directly brought. The method can also be applied to spatial distribution characteristics of trace elements, heavy metal elements and the like in soil, and has important significance on agricultural planting production and ecological environment protection.

Description

Technical Field

[0001] The present invention relates to the field of three-dimensional geological modeling, and in particular to a three-dimensional underground space modeling method, equipment and medium assisted by a CEM. Background Art

[0002] As China's urbanization process continues to develop, how to efficiently utilize urban underground space resources is an important measure to improve urban management efficiency and achieve sustainable urban development.

[0003] Since the distribution of elements in underground space is discrete, diverse and complex, and the distribution pattern and range of the same element in different geological environments are also different, setting the influence radius modeling of the element is an important prerequisite for creating a reasonable and accurate three-dimensional geological model.

[0004] In traditional 3D underground space modeling, triangulation modeling is often performed directly on the basis of exploration points, while ignoring the continuity of elements in spatial distribution. Therefore, the modeling process will produce problems such as inaccurate information expression and poor model display effect. Summary of the invention

[0005] The purpose of the present invention is to propose a three-dimensional underground space modeling method assisted by a CEM to solve the technical problems of inaccurate information expression and poor model display effect in traditional three-dimensional underground space modeling.

[0006] Specifically, the present invention provides a three-dimensional underground space modeling method assisted by a CEM, comprising the following steps:

[0007] S1. Importing the center point data of underground space modeling into the three-dimensional underground space system;

[0008] S2, set the influence radius of the center element;

[0009] S3, according to the process center point data and the set influence radius, complete the process center area drawing;

[0010] S4. Construct the cross-section Chengxin element according to the Chengxin area and complete the three-dimensional display.

[0011] A storage medium stores instructions and data for implementing a three-dimensional underground space modeling method assisted by a CEM.

[0012] A three-dimensional underground space modeling device assisted by a CEM includes: a processor and the storage medium; the processor loads and executes instructions and data in the storage medium to implement a three-dimensional underground space modeling method assisted by a CEM.

[0013] The beneficial effects provided by the present invention are:

[0014] The first is to improve the accuracy of modeling: according to the steps of importing the center point, setting the center element influence radius, drawing the center area, and constructing the cross-section center element, the distribution characteristics of certain elements in the entire underground space are finally obtained. This solves the problems of inaccurate information expression and poor model display effect in traditional three-dimensional underground space information models.

[0015] Secondly, it has a wide range of applications: compared with traditional underground space modeling, this method can not only be applied to the distribution characteristics of underground minerals to obtain the best excavation plan, thus directly bringing economic benefits, but also be applied to the spatial distribution characteristics of trace elements and heavy metal elements in the soil, which is of great significance for agricultural production and ecological environment protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic flow chart of the method of the present invention;

[0017] Figure 2 Draw a flow chart for the process core area of ​​the present invention;

[0018] Figure 3 It is a schematic diagram of the process center point connection of the present invention;

[0019] Figure 4 It is the process center area connection result diagram of the present invention;

[0020] Figure 5 It is a schematic diagram of the process center area boundary extraction of the present invention;

[0021] Figure 6 This is a modeling effect diagram of the section center element of the present invention;

[0022] Figure 7 It is a schematic diagram of the working of the hardware device of an embodiment of the present invention. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0024] Before formally describing the present invention, the scheme of the present invention is first generally described for easy understanding.

[0025] Please refer to Figure 1 The present invention provides a three-dimensional underground space modeling method assisted by a CEM, comprising the following steps:

[0026] S1. Importing the center point data of underground space modeling into the three-dimensional underground space system;

[0027] It should be noted that the three-dimensional underground space system is a gocad system.

[0028] In addition, regarding the process center data, the present invention explains as follows:

[0029] In the present invention, the spatial structure of the three-dimensional underground space is vertically divided into a number of sections, each section represents an independent spatial entity, its horizontal projection surface is called the section surface, and the engineering point on the section surface is called the engineering center point.

[0030] The relevant concepts of Chengxin element are also involved in the following text. Specifically, Chengxin element is a finite element constructed based on these Chengxin points to form a column structure, in which the element end elevation and element thickness define the end position and thickness of the column respectively.

[0031] As an embodiment, step S1 in the present invention is specifically as follows:

[0032] Organize the center point data containing spatial information, analyze the center point elevation and spatial position information, and create a point model in the three-dimensional underground space system based on the analyzed center point elevation and spatial position information.

[0033] S2, set the influence radius of the center element;

[0034] As an embodiment, step S2 of the present invention is specifically as follows:

[0035] Through the interconnected relationship of the regions, the layer of the elevation where the center point is located is decomposed into several regions, and the Thiessen polygons are calculated based on the regional boundaries and the center points in the regions. The Thiessen polygon boundary constraints are the regional boundaries, and the Thiessen polygon corresponding to each center point is its section surface.

[0036] S3, according to the process center point data and the set influence radius, complete the process center area drawing;

[0037] It should be noted that step S3 is specifically as follows:

[0038] Starting from each center point, connect the center points whose distance to the current center point is less than the preset value to form a new connection area, remove isolated edges and hanging edges, merge all connected triangles, and obtain the outer boundary.

[0039] As an example, please refer to Figure 2-Figure 5 ; Figure 2 It is a flow chart drawn in the core area of ​​the program. Figure 3 It is a schematic diagram of the connection of the center point; Figure 4 It is the process center area connection result diagram of the present invention; Figure 5 It is a schematic diagram of the process center area boundary extraction of the present invention.

[0040] First, select two center points A and B to construct two center areas with their influence radius, and judge whether the distance between the center points in A and B is less than 21. If so, connect the center points A and B. Otherwise, reselect the center point B to form the center area and continue to judge.

[0041] Repeat the above process until all the center points are traversed, connect all the center points, and the intersecting parts form triangles; merge the triangles into regions, and finally find the boundary of the regional polygon to obtain the entire center region.

[0042] S4. Construct the cross-section Chengxin element according to the Chengxin area and complete the three-dimensional display.

[0043] It should be noted that step S4 specifically includes the following:

[0044] Based on the element elevation, element thickness and center point, a path from bottom to top can be calculated, and the column can be constructed using the lofting method (three faces in total: top, bottom and side). The three-dimensional column model is displayed layer by layer according to the element elevation of the center point.

[0045] Please refer to Figure 6 , Figure 6 It is a rendering of the section core element modeling of the present invention.

[0046] See also Figure 7 , Figure 7 It is a schematic diagram of the working of the hardware device of an embodiment of the present invention, and the hardware device specifically includes: a three-dimensional underground space modeling device 401 assisted by a C-type element, a processor 402 and a storage medium 403 .

[0047] A three-dimensional underground space modeling device 401 assisted by a Chengxinyuan: The three-dimensional underground space modeling device 401 assisted by a Chengxinyuan implements the three-dimensional underground space modeling method assisted by a Chengxinyuan.

[0048] Processor 402: The processor 402 loads and executes the instructions and data in the storage medium 403 to implement the three-dimensional underground space modeling method assisted by the centroid element.

[0049] Storage medium 403: The storage medium 403 stores instructions and data; the storage medium 403 is used to implement the three-dimensional underground space modeling method assisted by the centroid element.

[0050] The beneficial effects of the present invention are:

[0051] The first is to improve the accuracy of modeling: according to the steps of importing the center point, setting the center element influence radius, drawing the center area, and constructing the cross-section center element, the distribution characteristics of certain elements in the entire underground space are finally obtained. This solves the problems of inaccurate information expression and poor model display effect in traditional three-dimensional underground space information models.

[0052] Secondly, it has a wide range of applications: compared with traditional underground space modeling, this method can not only be applied to the distribution characteristics of underground minerals to obtain the best excavation plan, thus directly bringing economic benefits, but also be applied to the spatial distribution characteristics of trace elements and heavy metal elements in the soil, which is of great significance for agricultural production and ecological environment protection.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-dimensional underground space modeling method assisted by a CEM, characterized in that: The method comprises the following steps: S1. Importing the center point data of underground space modeling into the three-dimensional underground space system; S2, set the influence radius of the center element; S3, according to the process center point data and the set influence radius, complete the process center area drawing; S4. Construct the cross-section Chengxin element according to the Chengxin area and complete the three-dimensional display.

2. A three-dimensional underground space modeling method assisted by a CEM as claimed in claim 1, characterized in that: Step S1 specifically includes: sorting out the center point data containing spatial information, analyzing the center point elevation and spatial position information, and creating a point model in the three-dimensional underground space system according to the analyzed center point elevation and spatial position information.

3. The method for three-dimensional underground space modeling assisted by a CEM as claimed in claim 1, characterized in that: Step S2 specifically includes: decomposing the layer of the element elevation where the center point is located into several regions through the interconnection relationship of the regions, and calculating the Thiessen polygons based on the region boundaries and the center points in the regions.

4. A three-dimensional underground space modeling method assisted by a CEM as claimed in claim 3, characterized in that: The Thiessen polygon boundary constraint is the regional boundary, and the Thiessen polygon corresponding to each process center point is its section surface.

5. The method for modeling three-dimensional underground space assisted by CEM as claimed in claim 1, characterized in that: Step S3 includes: starting from each center point, connecting the center points whose distance from the current center point is less than a preset value to form a new connection area, removing isolated edges and hanging edges, merging all connected triangles, obtaining the outer boundary, and obtaining the center area.

6. The method for three-dimensional underground space modeling assisted by a CEM as claimed in claim 1, characterized in that: Step S4 is specifically as follows: A path from bottom to top is calculated based on the element elevation, element thickness and center point, and the column is constructed using the lofting method; the three-dimensional column model is displayed layer by layer according to the element elevation of the center point.

7. A storage medium, characterized in that: The storage medium stores instructions and data for implementing a three-dimensional underground space modeling method assisted by a CEM as described in any one of claims 1 to 6.

8. A three-dimensional underground space modeling device assisted by a CEM, characterized in that: include: Processor and storage medium; the processor loads and executes instructions and data in the storage medium to implement a three-dimensional underground space modeling method assisted by a CEM as described in any one of claims 1 to 6.

Images