A tunnel engineering geological longitudinal section graph and three-dimensional GIS scene linkage method

Abstract

The tunnel engineering geological longitudinal section graph and three-dimensional GIS scene linkage method comprises the following steps: integrating a tunnel center vector line with spatial information into a three-dimensional GIS scene under a CGCS2000 coordinate system; obtaining an engineering geological longitudinal section graph of a certain section of a tunnel, and ensuring that the engineering geological longitudinal section graph is presented in a grid format; determining an interval range of the tunnel center vector line according to start and end stake numbers of the tunnel section engineering geological longitudinal section grid graph; calculating a corresponding relationship between a target point pixel on the tunnel section engineering geological longitudinal section grid graph and a target point position on the tunnel center vector line; and realizing real-time linkage between the two-dimensional tunnel section engineering geological longitudinal section grid graph and the three-dimensional GIS scene through a visual platform. The present application makes up for the technical deficiency of the linkage between the tunnel engineering geological longitudinal section graph and the three-dimensional GIS scene, and provides technical support for the tunnel engineering design technical disclosure and the all-around display of design results.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spatial information, in particular to a tunnel engineering geological longitudinal section graph and three-dimensional GIS scene linkage method. BACKGROUND

[0002] Tunnel engineering is a building constructed in the underground or mountain for transportation. The design and construction of tunnel engineering need to focus on the engineering geological conditions. Geological longitudinal section graph is used to present the geological longitudinal section conditions along the long-distance engineering, which can reflect the survey information of geological body in detail. Three-dimensional GIS scene is a virtual reproduction of real scene composed of terrain, image and surface cover three-dimensional model, which has the functions of full spatial dimension browsing, roaming, zooming and other functions, and rich interactive experience, which can display the real world from three-dimensional perspective. If the linkage between tunnel engineering geological longitudinal section graph and three-dimensional GIS scene can be realized, the geological longitudinal section information and spatial trend information of long-distance tunnel engineering can be interactively displayed on a graph, which provides technical support for tunnel engineering design technical disclosure and full range display of design results.

[0003] At present, there is still a lack in the technical field of solving the linkage between tunnel engineering geological longitudinal section graph and three-dimensional GIS scene.

[0004] In the existing patents, application number CN201710326259.9, the invention name is a method for establishing tunnel engineering geological longitudinal section graph, which realizes the automatic generation of railway tunnel geological longitudinal section graph design by using computer software based on railway line, ground line, tunnel top line and other geological data, which can effectively improve the work efficiency of railway tunnel geological longitudinal section graph design, but the research does not continue to expand the application dimension of the generated engineering geological longitudinal section graph, and lacks the integration of geographic spatial information.

[0005] In terms of solving the linkage between two-dimensional data and three-dimensional scene, in the existing patents, application number CN202210368274.0, the invention name is a long-line engineering information linkage display method based on BIM, GIS and geological profile graph, the linkage object is the element information included in the geological profile graph, the geological profile graph elements include geological curve, hydraulic structure, key geological fault, label, key cross building and current display position, and a complex spatial data table needs to be established during linkage, and the corresponding point is determined by shortest distance search. The linked information is mainly two-dimensional text information data, which cannot intuitively link the continuous long-distance longitudinal section raster graph, and the algorithm for calculating the linkage corresponding point is relatively complicated, which depends on a large amount of data processing work, and cannot seek an efficient algorithm from the pixel angle of the drawing.

[0006] In summary, the currently disclosed invention still lacks an efficient linkage method specifically for the tunnel engineering geological profile and three-dimensional GIS scene, and the existing technology cannot support the smooth linkage and intuitive visualization of the long-width continuous longitudinal profile and three-dimensional GIS scene. SUMMARY

[0007] The present application provides a linkage method for tunnel engineering geological profile and three-dimensional GIS scene, which solves the technical deficiency of the linkage of tunnel engineering geological profile and three-dimensional GIS scene in the background art, and provides technical support for the full display of tunnel engineering design technology disclosure and design results.

[0008] The present application solves the above technical problems by the following technical solutions:

[0009] The present application provides a linkage method for tunnel engineering geological profile and three-dimensional GIS scene, which is characterized by comprising the following steps:

[0010] Step S100: Integrate the tunnel center vector line with spatial information into the three-dimensional GIS scene under the CGCS2000 coordinate system;

[0011] Step S200: Obtain the engineering geological profile of a certain section of the tunnel, and ensure that the engineering geological profile is presented in raster format;

[0012] Step S300: Determine the interval range of the tunnel center vector line according to the start and end stake numbers of the tunnel section engineering geological profile raster map;

[0013] Step S400: Calculate the correspondence between the target point pixels on the tunnel section engineering geological profile raster map and the target point positions on the tunnel center vector line;

[0014] Step S500: Realize the real-time linkage of the two-dimensional tunnel section engineering geological profile raster map and the three-dimensional GIS scene through a visualization platform.

[0015] Preferably, step S100 is specifically: setting the geographic coordinate system of the three-dimensional GIS scene as CGCS2000; converting the coordinate information of the tunnel center vector line into coordinate information under CGCS2000 through coordinate conversion means.

[0016] Preferably, step S200 is specifically: determining the tunnel section in the project that needs to present the linkage effect, and obtaining the tunnel engineering geological profile of the section; if the obtained engineering geological profile is not in raster format, the drawing needs to be converted into a common raster format such as jpg or png through digitization means.

[0017] Preferably, step S300 is specifically: segmenting the tunnel center vector line with the start stake number and the end stake number of the selected tunnel section as boundaries to obtain the center vector line within the tunnel section interval.

[0018] Preferably, step S400 is specifically:

[0019] Step S410: Calculate the scale of the tunnel section engineering geological profile grid map:

[0020]

[0021] wherein, M start and M end respectively represent the start mileage and the end mileage corresponding to the start and end stake numbers of the tunnel section engineering geological profile grid map, W pixel represents the pixel width of the tunnel section engineering geological profile grid map;

[0022] Step S420: Calculate the pixel ratio of the geological profile Web DOM element and the tunnel section engineering geological profile grid image:

[0023]

[0024] wherein, naturalWidth is the inherent width of the tunnel section engineering geological profile grid map in CSS pixels, and offsetWidth is the layout width of the geological profile Web DOM element;

[0025] Step S430: Calculate the mileage corresponding to the target pixel point:

[0026]

[0027] wherein, X pixel is the coordinate value of the target pixel point in the x direction in the geological profile Web DOM element;

[0028] Step S440: Calculate the corresponding tunnel center vector line interval according to the mileage of the target pixel point:

[0029]

[0030] wherein, δ represents the interval length of the tunnel center vector line segmentation.

[0031] Preferably, step S500 is specifically:

[0032] Step S510: After entering the platform, the interface adopts a split-screen rolling shutter type interactive design, that is, the upper screen uses a three-dimensional map as a base map, and superimposes a regional geological map, and the lower screen correspondingly displays a two-dimensional engineering geological longitudinal section. The regional geological details in the upper screen can be viewed from different angles through mouse zooming and dragging. The legend on the right side of the screen explains the color matching and texture in the regional geological map and the engineering geological longitudinal section, and the regional geological conditions are intuitively presented;

[0033] Step S520: By long-pressing the right mouse button, the positioning axis of the tunnel engineering geological longitudinal section in the lower screen can be dragged, and the right mouse button is released. The positioning axis is positioned on the target point position of the tunnel center vector line in the three-dimensional GIS scene, at the same time, the perspective of the three-dimensional regional geological map in the upper screen is linked and positioned to the region where the point is located, and the detailed geological information of the pile number, surrounding rock type, construction method, risk type and the like to which the point belongs is popped up on the right side of the point.

[0034] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred examples of the present application are obtained.

[0035] The positive progress effect of the present application is that:

[0036] (1) The technical deficiency of the linkage between the tunnel engineering geological longitudinal section and the three-dimensional GIS scene is made up, and technical support is provided for the tunnel engineering design technical disclosure and the all-around display of design results.

[0037] (2) The three-dimensional spatial information of the engineering geological longitudinal section is given, the information amount carried by the engineering geological longitudinal section is expanded through the linkage between the two-dimensional drawing and the three-dimensional scene, and the geological longitudinal section information and the spatial trend information of the long-distance tunnel engineering can be interactively displayed on one drawing.

[0038] (3) Through the split-screen rolling shutter type interactive design, the smooth linkage transition between the long-width continuous longitudinal section and the three-dimensional GIS scene is realized, and an intuitive visual experience is provided. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 The flowchart of the linkage method between the tunnel engineering geological longitudinal section and the three-dimensional GIS scene of the preferred embodiment of the present application is shown. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0041] As Figure 1 shown, the embodiment provides a tunnel engineering geological longitudinal section graph and three-dimensional GIS scene linkage method, comprising the following specific steps:

[0042] Step S100: In the CGCS2000 coordinate system, integrate the tunnel center vector line set with spatial information into the three-dimensional GIS scene.

[0043] In step S100, set the geographic coordinate system in which the three-dimensional GIS scene is located as CGCS2000; convert the coordinate information of the tunnel center vector line into the coordinate information under CGCS2000 through coordinate conversion means; under the same spatial reference system, table the tunnel center vector line into the three-dimensional GIS scene, and build a linkage reference for the linkage tunnel engineering geological longitudinal section graph.

[0044] Step S200: Obtain the engineering geological longitudinal section graph of a certain section of the tunnel, and ensure that the engineering geological longitudinal section graph is presented in raster format.

[0045] In step S200, determine the tunnel section in the project that needs to present the linkage effect, and obtain the tunnel engineering geological longitudinal section graph of the section; if the obtained engineering geological longitudinal section graph is not in raster format, it needs to be converted into a common raster format such as jpg or png through digitization means.

[0046] Step S300: Determine the interval range of the tunnel center vector line according to the start and end stake numbers of the tunnel section engineering geological longitudinal section raster graph.

[0047] In step S300, the start stake number and the end stake number of the selected tunnel section are used as boundaries to segment the tunnel center vector line, and the center vector line within the tunnel section interval is obtained.

[0048] Step S400: Calculate the correspondence between the target point pixels on the tunnel section engineering geological longitudinal section raster graph and the target point positions on the tunnel center vector line.

[0049] Step S400 is specifically:

[0050] Step S410: Calculate the scale of the tunnel section engineering geological longitudinal section raster graph:

[0051]

[0052] Wherein, M start and M end respectively represent the start mileage and end mileage corresponding to the start and end stake numbers of the tunnel section engineering geological longitudinal section raster graph, W pixel represents the pixel width of the tunnel section engineering geological longitudinal section raster graph.

[0053] Step S420: Calculate the pixel ratio of the geological profile Web DOM element and the tunnel section engineering geological profile raster image:

[0054]

[0055] Wherein, naturalWidth is the inherent width of the tunnel section engineering geological profile raster image in CSS pixels, and offsetWidth is the layout width of the geological profile Web DOM element;

[0056] Step S430: Calculate the mileage corresponding to the target pixel point:

[0057]

[0058] Wherein, X pixel is the coordinate value of the target pixel point in the x direction in the geological profile Web DOM element;

[0059] Step S440: Calculate the corresponding tunnel center vector line interval according to the mileage of the target pixel point:

[0060]

[0061] Wherein, δ represents the interval length of the tunnel center vector line segmentation.

[0062] Step S500: Realize the real-time linkage of the two-dimensional tunnel section engineering geological profile raster image and the three-dimensional GIS scene through the visualization platform.

[0063] Step S500 is specifically:

[0064] Step S510: After entering the platform, the interface adopts a split-screen rolling shutter type interactive design, that is, the upper screen uses a three-dimensional map as the base map, and superimposes a regional geological map, and the lower screen correspondingly displays a two-dimensional engineering geological profile. The regional geological details in the upper screen can be viewed from different angles through mouse zooming and dragging. The legend on the rightmost side of the screen explains the color matching and texture in the regional geological map and the engineering geological profile, and intuitively presents the regional geological conditions; if only the three-dimensional map and the regional geological map in the upper screen are viewed, the lower screen tunnel engineering geological profile can be hidden by clicking the bottommost retract button;

[0065] Step S520: By long-pressing the right mouse button, the positioning axis of the tunnel engineering geological profile in the lower screen can be dragged, and the right mouse button is released to position the positioning axis to the target point position on the tunnel center vector line in the three-dimensional GIS scene, at the same time, the perspective of the three-dimensional regional geological map in the upper screen is linked and positioned to the region where the point is located, and the detailed geological information such as the stake number, surrounding rock type, construction method, and risk type of the point is popped up on the right side of the point.

[0066] The method gives the engineering geological profile three-dimensional space information, expands the information amount borne by the engineering geological profile through the linkage of two-dimensional drawing and three-dimensional scene, makes the geological profile information and space trend information of long-distance tunnel engineering interactively displayed on a drawing, makes up the technical vacancy of the linkage of tunnel engineering geological profile and three-dimensional GIS scene, and provides technical support for the tunnel engineering design technical disclosure and all-around display of design results.

[0067] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A tunnel engineering geological longitudinal section graph and three-dimensional GIS scene linkage method, characterized in that, It comprises the following steps: Step S100: integrate the tunnel center vector line with spatial information into the three-dimensional GIS scene under the CGCS2000 coordinate system; Step S200: obtain the engineering geological profile of a tunnel section, and ensure that the engineering geological profile is presented in raster format; Step S300: determine the interval range of the tunnel center vector line according to the start and end stake numbers of the tunnel section engineering geological profile raster map; Step S400: calculate the correspondence between the target pixel on the tunnel section engineering geological profile raster map and the target point position on the tunnel center vector line; Step S500: realize real-time linkage between the two-dimensional tunnel section engineering geological profile raster map and the three-dimensional GIS scene through a visualization platform; The step S100 specifically sets the geographic coordinate system of the three-dimensional GIS scene as CGCS2000, and converts the coordinate information of the tunnel center vector line into CGCS2000 coordinate information through coordinate conversion means; The step S200 specifically determines the tunnel section that needs to present the linkage effect in the project, and obtains the tunnel engineering geological profile of the section; if the obtained engineering geological profile is not in raster format, it needs to be converted into a common raster format such as jpg or png through digitization means; The step S300 specifically divides the tunnel center vector line with the start and end stake numbers of the selected tunnel section as boundaries to obtain the center vector line within the tunnel section interval; The step S400 specifically comprises: Step S410: calculate the scale of the tunnel section engineering geological profile raster map: ； wherein, with respectively represent the starting mileage and the ending mileage corresponding to the starting stake and the ending stake of the tunnel section engineering geological longitudinal section grid map, represents the pixel width of the tunnel section engineering geological longitudinal section grid map; Step S420: calculate the pixel ratio of the geological profile Web DOM element and the tunnel section engineering geological profile raster image: ； wherein, is the inherent width of the tunnel segment engineering geology profile grid in CSS pixels, is the layout width of the geology profile Web DOM element; Step S430: calculate the mileage corresponding to the target pixel point: ； wherein, is a coordinate value of the target pixel point in the x direction in the geological profile Web DOM element; Step S440: calculate the corresponding tunnel center vector line interval according to the mileage of the target pixel point: ； wherein denotes the length of the section of the tunnel center vector line.

2. The method of claim 1, wherein the tunnel engineering geological profile and three-dimensional GIS scene linkage method is characterized in that, The step S500 specifically comprises: Step S510: after entering the platform, the interface adopts a split-screen rolling shutter type of interactive design, i.e., the upper screen uses a three-dimensional map as the base map, and superimposes the regional geological map, and the lower screen correspondingly displays the two-dimensional engineering geological profile; The regional geological details in the upper screen can be viewed from different angles through mouse zooming and dragging; The legend on the rightmost side of the screen explains the color matching and texture in the regional geological map and the engineering geological profile, and intuitively presents the regional geological conditions; Step S520: by long-pressing the right mouse button, the positioning axis of the tunnel engineering geological profile in the lower screen can be dragged, and the right mouse button is released to position the axis to the target point position on the tunnel center vector line in the three-dimensional GIS scene, at the same time, the perspective of the three-dimensional regional geological map in the upper screen is linked and positioned to the region where the point is located, and the detailed geological information of the point is popped up on the right side of the point.

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