Dynamic visualization method, system and equipment for three-dimensional geologic model of underground engineering and storage medium

Abstract

The invention relates to the technical field of geologic models, in particular to an underground engineering three-dimensional geologic model dynamic visualization method, system and device and a storage medium. According to the technical scheme, the method comprises the following steps: data acquisition and integration: acquiring geological data through multiple exploration means, and carrying out standardization and fusion processing to obtain unified three-dimensional coordinate geological data; three-dimensional geologic model initialization construction: constructing a stratigraphic framework based on the integrated data, and accurately embedding a geologic structure into the stratigraphic framework to form a complete three-dimensional geologic model framework; and model dynamic visualization rendering: setting specific illumination and material attributes for the constructed three-dimensional geologic model. According to the method, a high-precision model is constructed through multi-source data fusion, the visualization effect and interactivity are optimized, real-time monitoring and continuous optimization of the model are achieved, a precise geological basis is provided for underground engineering, decision accuracy is enhanced, safety is guaranteed, and construction quality and economic benefits are improved.

Description

Technical Field

[0001] The present invention relates to the field of geological model technology, and in particular to a method, system, equipment and storage medium for dynamic visualization of a three-dimensional geological model of an underground engineering. Background Art

[0002] With the continuous development of underground engineering construction, such as subway tunnel excavation, mining, underground parking lots and the construction of large underground buildings, accurate understanding and visualization of underground geological conditions have become increasingly critical. Traditional geological exploration and analysis methods have gradually exposed many limitations when facing complex underground engineering needs.

[0003] In the early days, geological exploration mostly relied on a single drilling method. Although drilling can directly obtain underground core samples to determine the lithology, mineral composition and other information of the strata, the drilling information is limited to the location of the boreholes. The regional geological conditions between the boreholes can only be speculated, and it is difficult to build a complete and continuous three-dimensional geological model. This leads to a large number of geological information blind spots in the planning and construction of underground projects, which greatly increases the engineering risks. For example, during tunnel excavation, unexpected faults, weak strata and other unfavorable geological bodies may suddenly be encountered, causing engineering accidents such as collapse and water gushing.

[0004] In order to make up for the limitations of drilling, geophysical exploration methods such as seismic wave exploration have gradually been applied. Seismic wave exploration transmits and receives seismic waves, and infers the stratigraphic interface and geological structure based on the propagation characteristics of seismic waves in different strata. However, the interpretation of seismic wave exploration data has certain ambiguity and multiple solutions. The geological model constructed solely based on seismic wave exploration data has limited accuracy and is difficult to effectively integrate with the fine lithology data obtained by drilling, and the advantages of both data cannot be fully utilized.

[0005] At the same time, traditional geological model visualization is mostly static display. Even if a three-dimensional geological model is constructed, it only presents fixed geological information at a specific stage and cannot be dynamically updated as the underground engineering construction progresses. In the actual construction process, the stress state and hydrological conditions of the underground geological body will change. These changes may cause stratum deformation and geological structure activation, but the existing static visualization model cannot reflect these dynamic changes in time, making it difficult for engineering personnel to adjust the construction plan according to the real-time geological conditions, which is not conducive to the safe and efficient advancement of underground engineering.

[0006] In addition, existing visualization technologies are also insufficient in terms of interactivity. When viewing geological models, engineers can only perform simple zooming and panning operations, and it is difficult to query detailed information on specific geological bodies in depth, which cannot meet the needs of comprehensive and multi-angle in-depth analysis of geological information in the decision-making process of complex underground projects. For example, when dealing with large-scale underground complex projects, the development of underground spaces for various purposes requires extremely high detailed analysis of geological conditions in different regions, and traditional visualization methods are difficult to provide effective support.

[0007] In summary, it is of great practical significance to develop a method for dynamic visualization of underground engineering three-dimensional geological models that can integrate multi-source geological data, construct a high-precision and dynamically updateable three-dimensional geological model, and have powerful interactive functions. It will provide strong technical support for the design, construction, safety monitoring and management of underground engineering, effectively improve the quality and efficiency of underground engineering construction, and reduce engineering risks and costs. Therefore, this application proposes a method, system, device and storage medium for dynamic visualization of underground engineering three-dimensional geological models. Summary of the invention

[0008] The purpose of the present invention is to address the problem in the background technology that there is no ability to integrate multi-source geological data and construct a high-precision and dynamically updateable three-dimensional geological model, and to propose a dynamic visualization method, system, equipment and storage medium for underground engineering three-dimensional geological models.

[0009] In a first aspect, the present application provides a method for dynamic visualization of a three-dimensional geological model of an underground engineering, comprising the following steps:

[0010] Data collection and integration: Geological data is obtained through various exploration methods, and standardized and integrated to obtain unified three-dimensional coordinate geological data;

[0011] Initial construction of 3D geological model: construct a stratigraphic framework based on the integrated data, and accurately embed the geological structure into it to form a complete 3D geological model framework;

[0012] Dynamic visualization rendering of the model: set specific lighting and material properties for the constructed 3D geological model, and develop visualization programs to achieve dynamic display and interactive operation of the model;

[0013] Dynamic update and optimization of the model: During the construction of underground projects, the changes in geological bodies are monitored with the help of sensor networks, and the model is updated and optimized based on the monitoring data to ensure that the model is highly consistent with the actual geological conditions.

[0014] Optionally, in the data collection and integration, the multi-source data acquisition is specifically:

[0015] Use high-precision drilling equipment to drill according to the predetermined exploration grid, with a drilling depth interval of 0.5 meters to obtain the lithology, mineral composition, porosity and depth information of the core samples;

[0016] Using seismic wave tomography exploration, different frequencies of seismic waves are emitted at a 2m x 2m measuring point spacing, and a wave velocity model of the underground geological body is constructed based on the characteristics of the reflected waves to infer the stratigraphic interface and geological structure;

[0017] Conduct ground geological surveys to record the lithology and geological structure characteristics of the surface strata, and correlate and calibrate with drilling and seismic wave data.

[0018] Optionally, in the data collection and integration, data standardization and fusion specifically include the following steps:

[0019] Convert drilling data, seismic wave data, and ground geological survey data into a three-dimensional coordinate data format based on the geodetic coordinate system, with the x and y coordinates accurate to 0.01 meters and the z coordinate accurate to 0.1 meters;

[0020] For the formation interface data, the weighted average method is used for fusion, and the depth of the formation interface determined by drilling is d d , the depth of the stratum interface inferred by seismic waves is d s , whose weights are w d =0.6 and w s =0.4, the depth of the stratum interface after fusion d f The calculation formula is d f =w d ×d d +w s ×d s .

[0021] Optionally, in the initialization construction of the three-dimensional geological model, the method of constructing the stratigraphic framework includes:

[0022] Based on the fused stratum interface data, the Delaunay triangulation algorithm is used to construct a stratum triangular patch model. The adjacent stratum interfaces are filled with triangular prism units. The mismatch error of the common surfaces of adjacent triangular prisms is checked. If it exceeds 0.05 square meters, local adjustments and optimizations are made.

[0023] Calculate the volume and centroid of the formation model, the formation volume V t The volume of the triangular prism is calculated by summing the volumes of the triangular prisms. The volume of the triangular prism is calculated by the vector cross product method. Let the vertex A(x a ,y a ,z a )、B(x b ,y b ,z b )、C(x c ,y c,z c ), with height h, then its volume:

[0024]

[0025] Where [AC, BC] represents the cross product of vectors AC and BC, and the coordinates of the formation centroid (x g ,y g ,z g ) is calculated based on the weighted average volume of each triangular prism, and the formula is:

[0026]

[0027] n is the number of triangular prisms in the formation.

[0028] Optionally, in the three-dimensional geological model initialization construction step, the geological structure is embedded in the following manner:

[0029] For fault modeling, according to the fault strike angle α, dip angle β, inclination angle γ and fault throw Δh, the fault plane is constructed using parametric equations at the corresponding stratum position. Suppose the point P(x, y, z) on the fault plane is based on the known point P0(x0, y0, z0), then x=x0+t×cosα×cosγ, y=y0+t×sinα×cosγ, z=z0+t×sinγ, t is the parameter, and the strata on both sides of the fault plane are displaced according to the fault throw;

[0030] For the fold structure, according to the fold axis equation L: ax+by+cz+d=0 and the fold amplitude A f , use the surface deformation algorithm to deform the formation model, and assume that point Q(x q ,y q ,z q ) to the fold axis is d q , the coordinate after deformation Q′(x' q ,y' q ,z' q ) is calculated by vertical axis displacement, the displacement T is the fold wavelength, which is determined based on geological surveys.

[0031] Optionally, in the dynamic visualization rendering of the model, the characteristics of the lighting and material settings are:

[0032] Set ambient light, parallel light and point light source for the 3D geological model. The ambient light intensity I a is 0.3, the direction vector of the parallel light According to the observation direction of underground engineering, the parallel light intensity I p is 0.6, the point light source is 5 meters above the center of the model, and the intensity is I sis 0.8, the point light source attenuation coefficient k a =0.05, k b =0.002, k c =0.0001;

[0033] The material properties are defined for different rock types and geological structures. The diffuse reflection color of the hard rock formation is (0.5, 0.5, 0.5), the specular reflection color is (0.2, 0.2, 0.2), and the glossiness is 30; the diffuse reflection color of the soft rock formation is (0.7, 0.7, 0.3), the specular reflection color is (0.1, 0.1, 0.1), and the glossiness is 10; the diffuse reflection color of the fault is (1, 0, 0), the specular reflection color is (0.5, 0, 0), the glossiness is 5, and the fault transparency is 0.3.

[0034] Optionally, the dynamic display and interaction are as follows:

[0035] Develop visualization programs based on the graphical programming interface, with a frame rate of 60 frames per second to achieve real-time rendering and dynamic display of the model;

[0036] Set the user interaction function. Drag the left mouse button to rotate the model around the y-axis, with a rotation angle step of 0.5 degrees; drag the right mouse button to translate the model, with a step of 0.05 meters; roll the wheel to scale the model, with a scale factor of 1.1 times / scale, and set shortcut keys. The "F1" key controls the display and disappearance of the stratum model, the "F2" key controls the display and disappearance of the geological structure model, and the "F3" key switches the lighting mode.

[0037] In a second aspect, the present application provides a system for dynamic visualization of a three-dimensional geological model of an underground engineering, which is used to implement the method for dynamic visualization of a three-dimensional geological model of an underground engineering according to the first aspect, comprising:

[0038] Data acquisition and integration module: obtain geological data through various exploration methods, and perform standardization and fusion processing to obtain unified three-dimensional coordinate geological data;

[0039] 3D geological model initialization construction module: constructs a stratigraphic framework based on the integrated data and accurately embeds the geological structure into it to form a complete 3D geological model framework;

[0040] Model dynamic visualization rendering module: set specific lighting and material properties for the constructed 3D geological model, and develop visualization programs to realize dynamic display and interactive operation of the model;

[0041] Model dynamic update and optimization module: During the construction of underground projects, the sensor network is used to monitor the changes in geological bodies, and the model is updated and optimized based on the monitoring data to ensure that the model is highly consistent with the actual geological conditions.

[0042] In a third aspect, the present application provides a dynamic visualization device for a three-dimensional geological model of an underground engineering, comprising:

[0043] processor;

[0044] a memory storing executable instructions of the processor;

[0045] The processor is configured to execute the steps of the method for dynamic visualization of a three-dimensional geological model of an underground engineering project in the first aspect by executing the executable instructions.

[0046] In a fourth aspect, the present application provides a computer-readable storage medium for storing a program, which, when executed by a processor, implements the steps of the method for dynamic visualization of a three-dimensional geological model of an underground engineering project described in the first aspect.

[0047] Compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0048] By integrating and accurately fusing multi-source geological data, a high-precision three-dimensional geological model is constructed, which can accurately depict the details of the strata and geological structures, reduce the uncertainty of geological information, and provide a reliable basis for engineering planning.

[0049] Through unique lighting and material settings, different geological bodies can be visually identified in the model, enhancing the cognition and understanding of the underground geological environment and helping to improve decision-making accuracy.

[0050] The high frame rate visualization program combined with convenient mouse and keyboard interaction and shortcut key functions makes it easy to observe the model from multiple angles and levels of detail, efficiently obtain geological information, and improve work efficiency and comprehensive analysis.

[0051] During construction, the sensor network monitors geological changes in real time, and exceeding thresholds triggers model updates, providing safety warnings to ensure the safety of construction workers and the smooth progress of the project.

[0052] Based on the monitoring data, the model parameters are inverted and optimized to keep the model highly consistent with the actual geological conditions, continuously provide reliable support for construction decisions, and improve construction quality and economic benefits.

[0053] The present invention constructs a high-precision model through multi-source data fusion, optimizes visualization and interactivity, realizes real-time monitoring and continuous model optimization, provides accurate geological basis for underground engineering, enhances decision-making accuracy, ensures safety, and improves construction quality and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A flowchart of a method for dynamic visualization of a three-dimensional geological model of underground engineering; DETAILED DESCRIPTION

[0055] The following describes the implementation of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present application. The present application can also be implemented or applied through other different specific implementations, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0056] Example 1

[0057] like Figure 1 As shown, the method for dynamic visualization of underground engineering three-dimensional geological model proposed by the present invention comprises the following steps:

[0058] 1. Data Collection and Integration

[0059] 1. Multi-source data acquisition

[0060] Using high-precision drilling equipment, drilling is carried out according to the predetermined exploration grid to obtain core samples at different depths, analyze their lithology, mineral composition, porosity parameters, and record the corresponding depth information. The drilling depth interval is set to 0.5 meters to ensure the precision of the data.

[0061] Implement seismic wave tomography exploration, transmit seismic waves of different frequencies, receive reflected wave signals, and build a wave velocity model of the underground geological body by analyzing the time delay, amplitude change and other characteristics of the reflected waves, so as to infer the position and shape of the stratum interface and geological structure. The measurement point spacing of seismic wave exploration is 2 meters x 2 meters.

[0062] Conduct ground geological surveys to record in detail the lithology and geological structural characteristics of the exposed surface. The geological structural characteristics include the location, strike, and dip of fault outcrops, and correlate and calibrate with drilling and seismic wave exploration data.

[0063] 2. Data standardization and integration

[0064] The drilling data, seismic wave data, and ground geological survey data are uniformly converted into a three-dimensional coordinate data format based on the geodetic coordinate system, where the x and y coordinates are accurate to 0.01 meters, and the z coordinate (depth) is accurate to 0.1 meters.

[0065] A data fusion algorithm is established for the same geological features of different data sources. For the stratigraphic interface data, the weighted average method is used for fusion. Assume that the stratigraphic interface depth determined by drilling is d d , the depth of the stratum interface inferred by seismic waves is d s , whose weights are w d =0.6 and w s=0.4, the depth of the stratum interface after fusion d f The calculation formula is d f =w d ×d d +w s ×d s . By integrating multi-source data such as high-precision drilling, seismic wave tomography exploration, and ground geological surveys, the strengths of each data source are fully utilized. Drilling data provides accurate lithology and depth information, seismic wave data helps to infer a large range of stratigraphic interfaces and geological structures, and ground geological surveys supplement the key information of surface outcrops. The use of data fusion algorithms such as weighted average, such as the fusion processing of stratigraphic interface data, makes the constructed three-dimensional geological model more accurate and complete in spatial distribution and geological feature description, reduces the errors and uncertainties that may be caused by a single data source, and provides a reliable geological basis for the preliminary planning of underground projects.

[0066] 2. Initialization and construction of 3D geological model

[0067] 1. Strata framework construction

[0068] Based on the fused stratum interface data, the Delaunay triangulation algorithm is used to construct a triangular patch model of the stratum. For adjacent stratum interfaces, triangular prism units are constructed to fill the space between strata. During the construction process, the connectivity of adjacent triangular prisms is checked. If the mismatch error of the common faces of adjacent triangular prisms exceeds 0.05 square meters, local adjustment and optimization are performed.

[0069] 2. Calculate the volume and center of mass of the formation model. Formation volume V t The calculation is obtained by summing the volumes of all triangular prisms. The volume of triangular prisms is calculated using the vector cross product method. Assume that the coordinates of the three vertices of the triangular prism are A(x a ,y a ,z a )、B(x b ,y b ,z b )、C(x c ,y c ,z c ), with height h, then its volume:

[0070]

[0071] Where [AC, BC] represents the cross product of vectors AC and BC, and the coordinates of the formation centroid (x g ,y g ,z g ) is calculated based on the weighted average volume of each triangular prism, and the formula is:

[0072]

[0073] n is the number of triangular prisms in the formation.

[0074] 3. Geological structure embedding

[0075] For fault modeling, according to the geometric parameters of the fault and the fault throw Δh, the geometric parameters include strike angle α, dip angle β, and dip angle γ, and the fault plane is constructed at the corresponding stratum position. The fault plane is represented by a parametric equation. Suppose a point P(x, y, z) on the fault plane is taken as the reference, and a known point P0(x0, y0, z0) on the fault is taken as the reference, then x=x0+t×cosα×cosγ, y=y0+t×sinα×cosγ, z=z0+t×sinγ, t is the parameter, and the strata on both sides of the fault plane are displaced according to the fault throw to ensure the geometric consistency of the strata and the fault plane.

[0076] For the fold structure, according to the fold axis equation: the straight line equation L: ax+by+cz+d=0 and the fold amplitude A f , the surface deformation algorithm is used to deform the formation model. Suppose a point Q(x q ,y q ,z q ) to the fold axis is d q , the deformed coordinate Q′(x' q ,y' q ,z' q ) is obtained by calculating the displacement of point Q along the direction perpendicular to the axis. T is the fold wavelength, which is determined according to geological surveys. During the initial construction of the three-dimensional geological model, advanced algorithms are used to construct the stratigraphic framework and embed geological structures based on the fused data. For example, the Delaunay triangulation algorithm constructs a stratigraphic triangular patch model and fills in triangular prism units, which can adapt well to complex stratigraphic morphology and accurately depict the geometric characteristics of the stratigraphic structure. The modeling method for geological structures such as faults and folds is constructed based on their geometric parameters and deformation characteristics, so that the model can carefully reflect the true situation of the geological structure. Whether it is the continuity of the stratigraphic structure, the spatial form of the geological structure or the relationship between them, it can be accurately presented, which helps engineers to predict in advance the geological problems that may be encountered in the construction of underground projects, such as the treatment of fault fracture zones and the stability analysis of fold areas.

[0077] 3. Dynamic Visual Rendering of Model

[0078] 1. Lighting and material settings

[0079] Set ambient light, parallel light and point light for the 3D geological model. a Set to 0.3, parallel light direction vector Determined according to the main observation direction of underground engineering, Indicates irradiation from top to bottom, parallel light intensity I p is 0.6, the point light source is located 5 meters above the center of the model, and the intensity is I s is 0.8, the attenuation coefficient k of the point light source a =0.05, k b =0.002, k c =0.0001, used to calculate the attenuation of point light source intensity with distance.

[0080] Assign material properties to different lithology strata and geological structures. The diffuse color of the hard rock strata is (0.5,0.5,0.5), the specular color is (0.2,0.2,0.2), and the glossiness is 30; the diffuse color of the soft rock strata is (0.7,0.7,0.3), the specular color is (0.1,0.1,0.1), and the glossiness is 10; the diffuse color of the fault is (1,0,0), the specular color is (0.5,0,0), the glossiness is 5, and the transparency of the fault is set to 0.3. Carefully set lighting and material properties significantly improve the visualization of the model. Different lithology strata and geological structures have unique material characteristics such as diffuse color, specular color, glossiness, and transparency. For example, hard rock strata and soft rock strata can be clearly distinguished visually, and faults are highlighted in bright red and with a specific degree of transparency. This allows engineers to intuitively identify different geological bodies when viewing the model and experience the underground geological environment as if they were there, enhancing their cognition and understanding of the geological conditions and helping to improve the accuracy and efficiency of decision-making.

[0081] 2. Dynamic display and interaction

[0082] Develop visualization programs based on graphics programming interfaces (including OpenGL or DirectX) to achieve real-time rendering and dynamic display of models. Set the frame rate to 60 frames per second to ensure smooth display of the model.

[0083] Implement user interaction functions, and control the rotation, translation, and scaling of the model through mouse and keyboard operations. Press and drag the left mouse button to rotate the model around the y-axis, with a rotation angle step of 0.5 degrees; press and drag the right mouse button to translate the model, with a translation step of 0.05 meters; scroll the mouse wheel to scale the model, with a scaling factor of 1.1 times / wheel scale. At the same time, set shortcut keys, such as the "F1" key to display or hide the stratigraphic model, the "F2" key to display or hide the geological structure model, and the "F3" key to switch different lighting modes. The developed visualization program has a high frame rate (60 frames per second) and rich interactive functions. The model can be flexibly rotated, translated and scaled by mouse and keyboard operation. The operation step is carefully designed, such as the rotation angle step is 0.5 degrees, the translation step is 0.05 meters, and the scaling factor is 1.1 times / roller scale. Convenient shortcut keys are set, such as "F1", "F2" and "F3", which respectively control the visibility of the stratigraphic model and geological structure model and the switching of the lighting mode. These interactive functions make it convenient for engineers to observe and analyze the model from any angle and any degree of detail, and can quickly focus on the area or geological body of concern, and efficiently obtain the required geological information, greatly improving work efficiency and comprehensiveness of analysis.

[0084] 4. Dynamic model update and optimization

[0085] 1. Data monitoring and update triggering

[0086] During the construction of underground projects, a sensor network is deployed, including displacement sensors, stress sensors, groundwater level sensors, etc., to monitor the deformation, stress changes and hydrogeological conditions of the geological body in real time. The measurement accuracy of the displacement sensor is 0.001 meters, and the measurement accuracy of the stress sensor is 0.1MPa.

[0087] When the change in the monitoring data exceeds the preset threshold, the model update is triggered. If the stratum displacement changes by more than 0.1 meters or the stress changes by more than 1 MPa, the model update program is started. During the construction of underground projects, the arranged sensor network can monitor the deformation, stress changes and hydrogeological conditions of the geological body in real time, with an accuracy of 0.001 meters for displacement sensors and 0.1 MPa for stress sensors. Once the change in the monitoring data exceeds the preset threshold, such as when the stratum displacement changes by more than 0.1 meters or the stress changes by more than 1 MPa, the model update program is triggered in time. This provides a real-time safety monitoring and early warning mechanism for underground engineering construction. Engineering personnel can know in advance the potential geological risks, such as the occurrence trend of dangerous situations such as stratum collapse and groundwater influx, so as to take corresponding preventive measures in time to ensure the safety of construction personnel and the smooth progress of the project.

[0088] 2. Model optimization and calibration

[0089] According to the new monitoring data, the back analysis algorithm is used to optimize the parameters of the geological model. For example, the elastic modulus and Poisson's ratio of the formation are inverted using the monitored formation displacement data. Assume that the actual displacement of the displacement monitoring point is The displacement calculated by the model is By minimizing the objective function:

[0090]

[0091] k is the number of monitoring points, and the gradient descent method is used to adjust the elastic modulus E and Poisson's ratio v of the formation. During the optimization process, the adjustment step of the elastic modulus is 0.1 GPa, and the adjustment step of the Poisson's ratio is 0.01.

[0092] Compare and calibrate the optimized model with the new monitoring data, and calculate the error index between the model and the actual data:

[0093]

[0094] Among them, d j is the jth data value calculated by the model, d mj is the jth monitoring data value, l is the number of comparison data, if the error index is greater than 0.1, the model optimization will continue until the error index meets the requirements.

[0095] Based on the new monitoring data, the inverse analysis algorithm is used to optimize the geological model parameters, such as the inverse adjustment of the formation elastic modulus and Poisson's ratio. By minimizing the objective function and using optimization algorithms such as the gradient descent method, combined with a reasonable parameter adjustment step (the elastic modulus adjustment step is 0.1GPa, and the Poisson's ratio adjustment step is 0.01), the model can continuously adapt to the actual changes in the geological body and always maintain a high degree of consistency with the underground geological conditions. The optimized model is compared and calibrated with the new monitoring data to ensure that the error indicators meet the requirements, thereby providing a continuous and reliable basis for subsequent construction decisions, such as reasonably adjusting the construction schedule, optimizing the support plan, and effectively improving the construction quality and economic benefits of underground projects.

[0096] Example 2

[0097] This embodiment provides a system for dynamic visualization of a three-dimensional geological model of an underground project, which is used to implement the method for dynamic visualization of a three-dimensional geological model of an underground project described in Embodiment 1, including:

[0098] Data acquisition and integration module: obtain geological data through various exploration methods, and perform standardization and fusion processing to obtain unified three-dimensional coordinate geological data;

[0099] 3D geological model initialization construction module: constructs a stratigraphic framework based on the integrated data and accurately embeds the geological structure into it to form a complete 3D geological model framework;

[0100] Model dynamic visualization rendering module: set specific lighting and material properties for the constructed 3D geological model, and develop visualization programs to realize dynamic display and interactive operation of the model;

[0101] Model dynamic update and optimization module: During the construction of underground projects, the sensor network is used to monitor the changes in geological bodies, and the model is updated and optimized based on the monitoring data to ensure that the model is highly consistent with the actual geological conditions.

[0102] Example 3

[0103] This embodiment provides a dynamic visualization device for a three-dimensional geological model of an underground engineering, including:

[0104] processor;

[0105] a memory storing executable instructions of the processor;

[0106] The processor is configured to execute the steps of the method for dynamic visualization of a three-dimensional geological model of an underground engineering project described in Example 1 by executing the executable instructions.

[0107] Example 4

[0108] This embodiment provides a computer-readable storage medium for storing a program, and when the program is executed by a processor, the steps of the method for dynamic visualization of a three-dimensional geological model of an underground engineering project described in Embodiment 1 are implemented.

[0109] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A method for dynamic visualization of underground engineering three-dimensional geological models, characterized in that: The following steps are involved: Data collection and integration: Geological data is obtained through various exploration methods, and standardized and integrated to obtain unified three-dimensional coordinate geological data; Initial construction of 3D geological model: construct a stratigraphic framework based on the integrated data, and accurately embed the geological structure into it to form a complete 3D geological model framework; Dynamic visualization rendering of the model: set specific lighting and material properties for the constructed 3D geological model, and develop visualization programs to achieve dynamic display and interactive operation of the model; Dynamic update and optimization of the model: During the construction of underground projects, the changes in geological bodies are monitored with the help of sensor networks, and the model is updated and optimized based on the monitoring data to ensure that the model is highly consistent with the actual geological conditions.

2. The method for dynamic visualization of underground engineering three-dimensional geological model according to claim 1, characterized in that: In the data collection and integration, multi-source data acquisition is specifically as follows: Use high-precision drilling equipment to drill according to the predetermined exploration grid, with a drilling depth interval of 0.3-0.6 meters to obtain the lithology, mineral composition, porosity and depth information of the core samples; Using seismic wave tomography exploration, different frequencies of seismic waves are emitted at a 2m x 2m measuring point spacing, and a wave velocity model of the underground geological body is constructed based on the characteristics of the reflected waves to infer the stratigraphic interface and geological structure; Conduct ground geological surveys to record the lithology and geological structure characteristics of the surface strata, and correlate and calibrate with drilling and seismic wave data.

3. The method for dynamic visualization of underground engineering three-dimensional geological model according to claim 2, characterized in that: In the data collection and integration, data standardization and fusion specifically include the following steps: Convert drilling data, seismic wave data, and ground geological survey data into a three-dimensional coordinate data format based on the geodetic coordinate system, where the x and y coordinates are 0.01 meters and the z coordinate is 0.1 meters; For the formation interface data, the weighted average method is used for fusion, and the depth of the formation interface determined by drilling is d d , the depth of the stratum interface inferred by seismic waves is d s , whose weights are w d =0.6 and w s =0.4, the depth of the fused stratum interface d f The calculation formula is d f =w d ×d d +w s ×d s .

4. The method for dynamic visualization of underground engineering three-dimensional geological model according to claim 1, characterized in that: In the initialization construction of the three-dimensional geological model, the method of constructing the stratigraphic framework includes: Based on the fused stratum interface data, the Delaunay triangulation algorithm is used to construct a stratum triangular patch model. The adjacent stratum interfaces are filled with triangular prism units. The mismatch error of the common surfaces of adjacent triangular prisms is checked. If it exceeds 0.05 square meters, local adjustments and optimizations are made. Calculate the volume and centroid of the formation model, the formation volume V t The volume of the triangular prism is calculated by summing the volumes of the triangular prisms. The volume of the triangular prism is calculated by the vector cross product method. Let the vertex A(x a ,y a ,z a )、B(x b ,y b ,z b )、C(x c ,y c ,z c ), with height h, then its volume: Where [AC, BC] represents the cross product of vectors AC and BC, and the coordinates of the formation centroid (x g ,y g ,z g ) is calculated based on the weighted average volume of each triangular prism, and the formula is: n is the number of triangular prisms in the formation.

5. The method for dynamic visualization of underground engineering three-dimensional geological model according to claim 4, characterized in that: In the initialization construction step of the three-dimensional geological model, the geological structure is embedded in the following manner: For fault modeling, according to the fault strike angle α, dip angle β, inclination angle γ and fault throw Δh, the fault plane is constructed using parametric equations at the corresponding stratum position. Suppose the point P(x, y, z) on the fault plane is based on the known point P0(x0, y0, z0), then x=x0+t×cosα×cosγ, y=y0+t×sinα×cosγ, z=z0+t×sinγ, t is the parameter, and the strata on both sides of the fault plane are displaced according to the fault throw; For the fold structure, according to the fold axis equation L: ax+by+cz+d=0 and the fold amplitude A f , use the surface deformation algorithm to deform the formation model, and assume that point Q(x q ,y q ,z q ) to the fold axis is d q , the coordinate after deformation Q′(x' q ,y' q ,z' q ) is calculated by vertical axis displacement, the displacement T is the fold wavelength, which is determined based on geological surveys.

6. The method for dynamic visualization of underground engineering three-dimensional geological model according to claim 1, characterized in that: In the dynamic visualization rendering of the model, the characteristics of lighting and material settings are: Set ambient light, parallel light and point light source for the 3D geological model. The ambient light intensity I a is 0.3, the direction vector of the parallel light According to the observation direction of underground engineering, the parallel light intensity I p is 0.6, the point light source is 5 meters above the center of the model, and the intensity is I s is 0.8, the point light source attenuation coefficient k a =0.05, k b =0.002, k c =0.0001; Determine material properties for different lithologies and geological structures.

7. The method for dynamic visualization of underground engineering three-dimensional geological model according to claim 6, characterized in that: The dynamic display and interaction are as follows: Develop visualization programs based on graphical programming interfaces; Set the user interaction function to rotate the model around the y-axis with a rotation angle step of 0.5 degrees; translate the model with a step of 0.05 meters; scale the model with a scale factor of 1.1 times / scale, and set different working modes.

8. A system for dynamic visualization of underground engineering three-dimensional geological models, used to implement the method for dynamic visualization of underground engineering three-dimensional geological models according to claim 1, characterized in that: include: Data acquisition and integration module: obtain geological data through various exploration methods, and perform standardization and fusion processing to obtain unified three-dimensional coordinate geological data; 3D geological model initialization construction module: constructs a stratigraphic framework based on the integrated data and accurately embeds the geological structure into it to form a complete 3D geological model framework; Model dynamic visualization rendering module: set specific lighting and material properties for the constructed 3D geological model, and develop visualization programs to realize dynamic display and interactive operation of the model; Model dynamic update and optimization module: During the construction of underground projects, the sensor network is used to monitor the changes in geological bodies, and the model is updated and optimized based on the monitoring data to ensure that the model is highly consistent with the actual geological conditions.

9. A dynamic visualization device for underground engineering three-dimensional geological models, characterized in that: include: processor; a memory storing executable instructions of the processor; Wherein, the processor is configured to execute the steps of the method for dynamic visualization of a three-dimensional geological model of an underground engineering project according to any one of claims 1 to 7 by executing the executable instructions.

10. A computer-readable storage medium for storing a program, characterized in that: When the program is executed by a processor, the steps of the method for dynamic visualization of a three-dimensional geological model of an underground engineering project according to any one of claims 1 to 7 are implemented.

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