CN115345043A - Three-dimensional simulation method for gold underground mine mining process - Google Patents
Three-dimensional simulation method for gold underground mine mining process Download PDFInfo
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Abstract
The invention discloses a three-dimensional simulation method of a gold underground mine mining process, which comprises the following steps: collecting information of various production equipment related to a gold underground mine mining process, generating a simulation model of each production equipment through three-dimensional modeling software, and establishing an equipment model library; combing and forming a mining operation standard flow, and building a gold underground mine three-dimensional simulation environment by using three-dimensional modeling software; importing a production equipment model by using three-dimensional action software and programming software, simulating and reproducing a mining production process, and synchronously loading the three-dimensional simulation scene of the gold underground mine; and the UI interface and the interaction function of the gold underground mine three-dimensional simulation are perfected. The method solves the problems that the model is too large and cannot be loaded, the model penetrates through the model or the mapping disappears and the like in the three-dimensional simulation of the gold underground mine mining process.
Description
Technical Field
The invention relates to the technical field of mine production, in particular to a three-dimensional simulation method of a gold underground mine mining process.
Background
As a new mode of fusing virtual reality, artificial intelligence, internet of things and three-dimensional GIS technology, the three-dimensional simulation reproduction method is successively researched and applied in domestic and overseas enterprises and colleges in recent years, gradually enters mine enterprises, and obtains good reverberation. The real reduction of mining production operation process and scene is realized through the three-dimensional simulation modeling technology, the complete mining production process of the virtual gold underground mine with high reduction and high authenticity is presented, and the method is very important for comprehensively improving the technical level and the working efficiency of post operation training, safety education training and mine production cognitive training of a mining group.
The three-dimensional simulation of the mine mining process in the prior art has the following problems: when the model is too large, the loading fails, when the role is just added into the model, the model can be successfully loaded, and after exiting, the model is restarted, so that the model which is originally successfully loaded can not be loaded; in the three-dimensional simulation process, because the coordinates are not zeroed, the situation that the model penetrates through the mold or the map disappears can occur when the model is enlarged or reduced; the play of the script is stopped by the time point pause button, and then the play is started from the beginning, namely the script operation does not support 'play at any time point' and the like.
Disclosure of Invention
The invention provides a three-dimensional simulation method of a gold underground mine mining process, which aims to: the defects of the prior art are overcome, and the three-dimensional simulation level of the mining process of the gold underground mine is improved.
The technical scheme of the invention is as follows:
a three-dimensional simulation method for a gold underground mine mining process comprises the following steps:
the method comprises the following steps: collecting information of various production equipment related in the mining process of the gold underground mine, generating a simulation model of each production equipment through three-dimensional modeling software, and establishing an equipment model library;
step two: combing and forming a mining operation standard flow, and building a three-dimensional simulation environment of the gold underground mine by using three-dimensional modeling software;
step three: importing a production equipment model, simulating and reproducing a mining production process by using three-dimensional action software and programming software, and synchronously loading the three-dimensional simulation scene of the gold underground mine;
step four: and the UI interface and the interaction function of the gold underground mine three-dimensional simulation are perfected.
Further, the third step comprises the steps of carrying out global organization on the gold underground mine three-dimensional simulation model by using an LOD loading mode, wherein a simulation object comprises an image layer class, a data source class, an object model class and a rendering class, and each image layer class, data source class and object model class respectively correspond to the rendering class in one rendering module; and during loading, constructing octree grids for all model data source classes and adding spatial indexes, and loading corresponding data according to spatial division and delivering the data to a rendering module for dynamic rendering during user operation.
Further, the dynamic rendering in the third step specifically includes setting a shader program for the layer attributes to complete rendering, and performing action editing and action rendering for the motion attributes; and determining the resource allocation of object loading according to the position and the importance of the node of the object model in the display environment, reducing the number of faces and the detail of the non-important object, and obtaining high-efficiency rendering calculation.
Further, the third step further includes loading the model information in a relative coordinate manner: the method comprises the steps of defining the position of a certain object as a relative coordinate origin in a specific scene, converting absolute coordinate values of other objects into relative coordinate values, and performing dynamic rendering based on the relative coordinate values.
Further, the third step further includes defining different relative coordinate origins in different scenes, and converting the relative coordinate values of the model information in different scenes when the model information is streamed between the scenes.
And further, for the dynamic equipment, firstly, an inertial motion capture system is used for capturing the motion of the character, the captured motion is subjected to smoothing and frame thinning adjustment by using three-dimensional motion software to form a motion library, then, the three-dimensional motion software is used for carrying out node axis correction and parent-child node setting and then outputting the motion library to a virtual engine, IK and physical simulation functions are used in the virtual engine to configure the equipment into dynamic equipment with controllable motion state, and finally, the dynamic model is loaded to the three-dimensional simulation scene of the gold underground mine.
Further, the step two of forming the mining operation specification flow includes adding viewpoints among different procedures of the mining operation specification flow, and linking among the different viewpoints for fast switching and roaming among the different procedures.
Further, the step two of building the three-dimensional simulation environment of the gold underground mine by using the three-dimensional modeling software comprises the step of modeling by using three-dimensional digital mining software to generate an ore body model through geological modeling or by using point cloud data generated through on-site measurement of the mine;
the point cloud data generated by the mine field measurement is used for modeling, and the method specifically comprises the following steps: the method comprises the steps of firstly converting the original format of point cloud data into rcs or rcp files which can be utilized by Autodesk software through recap software, then loading point cloud through 3DMAX software and modeling, and after the three-dimensional simulation scene model is built, performing real material simulation through material drawing software.
Further, the fourth step includes the step of making the script according to a specific process flow, and the specific method is as follows:
editing a script making task script by adopting IDE programming, and creating action types, wherein the action types comprise playing, pausing, advancing, backing and double-speed playing;
carrying out content-based encoding on the output audio and video, serializing the encoded audio and video, and storing the serialized audio and video content to a file of a magnetic disk in a byte form;
adding a plurality of threads to a video player, wherein the corresponding playing threads are in a thread ready queue before playing, and waiting for a system to distribute a CPU (central processing unit), and the plurality of threads are a plurality of continuous control flows;
and after the system selects the thread to be played according to the script time sequence, the selected thread enters an execution state from a ready state, and the corresponding thread is released after the playing is finished.
And further, the third step further comprises the step of taking the actual roadway center line as a reserved center line and deleting the designed roadway center line when personnel positioning network calculation is carried out, wherein the actual roadway center line is corrected in real time according to the existing roadway and geological change conditions in the mining process.
Compared with the prior art, the invention has the following beneficial effects:
(1) When the model is too large, the gold underground mine three-dimensional simulation model is globally organized by using an LOD loading mode, the stability of model loading is ensured by adopting a dynamic rendering mode, and a gold underground mine mining scene is split into LOD three-dimensional simulation scenes which are built by layers, data sources, object models and corresponding renderings, so that the consumption of computing resources is greatly reduced, higher rendering and loading efficiency is obtained, and the situation that the loading fails when the model is too large is effectively avoided;
(2) The model information is loaded by adopting a relative coordinate and dynamic rendering mode, a new mode of an object is expanded by using the relative coordinate, and an absolute assignment relationship is replaced by using an incidence relationship of the object, so that the method is more flexible, and a certain object can be independently modified without influencing other individuals, thereby effectively avoiding the condition that the model is penetrated or a map is lost when the model is enlarged or reduced due to the fact that the coordinate is not reset to zero in the three-dimensional simulation process;
(3) When the script is made, the 'random-point random-release' of the script is realized through the cooperation of the serialization of the files and the threading of the player.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings:
referring to fig. 1, a three-dimensional simulation method for a gold underground mine mining process comprises the following steps:
the method comprises the following steps: collecting information of various production equipment related to the mining process of the gold underground mine, generating a simulation model of each production equipment through three-dimensional modeling software, and establishing an equipment model library.
Specifically, the method comprises the steps of carrying out on-site research and acquisition on information of various production equipment related to a mining process of the gold underground mine, carrying out appearance data acquisition on the mining production equipment, an operation environment, auxiliary facilities and the like by adopting various modes such as measurement, scanning, photo shooting, video shooting and the like, carrying out refined modeling on main equipment in a mining process of 'tunneling, rock drilling, charging, ripping, shoveling, supporting, slipping, transporting, crushing, transferring, lifting and filling' of the gold underground mine in three-dimensional modeling software, providing a refined equipment model for the mining process flow and the production process simulation, and further establishing an equipment model library.
Step two: collecting audio and video in the actual production process of the gold underground mine, combing and forming a mining operation standard flow by combining a mining process manual, and roughly dividing the mining operation standard flow into: the method mainly comprises the steps of drilling and blasting, shovel loading and transporting, electric locomotive loading and transporting, main draw shaft ore drawing, underground crushing, lifting and transporting and the like.
Preferably, the forming of the mining operation specification process includes making a process angle document which can be used for displaying according to the mining operation specification process, adding viewpoints among different processes of the mining operation specification process, and linking among the different viewpoints, so that rapid switching and roaming among different processes (i.e., different scenes) can be realized.
And (3) building a three-dimensional simulation environment of the gold underground mine by using three-dimensional modeling software, and taking the three-dimensional simulation environment as a main scene of a simulation equipment model and a simulation production process. When the method is used for constructing the three-dimensional model of the gold underground mine environment, the method not only supports the ore body model generated by directly adopting three-dimensional digital mining software geological modeling, but also can adopt point cloud data generated by the on-site measurement of a three-dimensional laser scanner for modeling.
When point cloud data generated by field measurement of a mine is adopted for modeling, the original format of the point cloud data is converted into rcs or rcp files which can be utilized by Autodesk software through recap software, then 3DMAX software is used for loading the point cloud and modeling, and after a three-dimensional simulation scene model is built, real material simulation is carried out through material drawing software, so that the three-dimensional scene reality degree is increased, and the experience immersion is improved.
Step three: and importing a production equipment model by using three-dimensional action software and programming software, simulating and reproducing a mining production process, and synchronously loading the three-dimensional simulation scene to the gold underground mine.
For dynamic equipment, firstly, an inertial motion capture system is used for capturing motions of characters (comprising motions of walking, standing, running, jumping, production operation and the like), the captured motions are adjusted by three-dimensional motion software for smoothing, frame thinning and the like to form a motion library, node axis correction, father and son node setting and outputting are carried out on the mechanical equipment by using the three-dimensional motion software, the mechanical equipment is configured into dynamic equipment with controllable motion states by using functions of IK, physical simulation and the like in a virtual engine, and finally all dynamic models are loaded to a gold underground mine three-dimensional simulation scene.
When the model is too large, a LOD loading mode is utilized to carry out global organization on a gold underground mine three-dimensional simulation model, a simulation object comprises a layer class, a data source class, an object model class and a rendering class, the data source class comprises geological survey data, drilling data, spatial position data and index data, the layer class comprises related attributes such as a layer ID, a layer visible proportion range, a layer color and a layer transparency, the object model class comprises an object ID, an object material, an object size and an object motion module, each layer class, data source class and object model class respectively correspond to the rendering class in one rendering module, and the rendering class adopts a dynamic rendering mode to ensure the loading stability of the model.
And when the model data is loaded, octree grids are constructed for all model data sources, spatial indexes are added, and corresponding data are loaded according to mine area division (spatial division) and sent to a rendering module for dynamic rendering when a user operates the model data.
The dynamic rendering specifically comprises the steps of setting a shader program for the layer attributes to complete rendering, and performing action editing and action rendering for the motion attributes; and determining the resource allocation of object loading according to the position and the importance of the node of the object model in the display environment, reducing the number of faces and the detail of the non-important object, and obtaining high-efficiency rendering calculation.
For example, when three-dimensional simulation is performed, because the occurrence of ore body resources is complex and the mining process is complicated, if complete detail simulation of all scenes is used, the resources occupied by a computer are overlarge, and a CPU is excessively occupied and crashed. The method comprises the steps of constructing octree grids for all model data sources and adding spatial indexes, loading corresponding data according to region division (such as XX middle section and XX chamber) during user operation, delivering the data to a rendering module for dynamic rendering, and finishing operations such as organization and transmission of vertex data, updating of EBO data in a video memory, model symbolic rendering and the like in a rendering execution module.
And determining the resource allocation of object loading according to the position and the importance of the node of the object model in the display environment, if in a rock drilling link, the resource allocation is mainly performed on the model of the rock drilling trolley and the action thereof, so that the face number and the detail degree of the roadway environment where the trolley is located and the ore body model are reduced, and the high-efficiency loading calculation is obtained.
According to the method, a gold underground mine mining scene is split into the LOD three-dimensional simulation scene which is built by the image layer, the data source, the object model and the corresponding rendering together in a dynamic rendering mode when the model is loaded, so that the consumption of computing resources is greatly reduced, higher rendering and loading efficiency is obtained, and the scene operation module can be supported to perform visual angle operations such as translation, rotation, scaling, pitching and the like without generating obvious unsmooth and unsmooth feelings.
Further, the method adopts a relative coordinate mode to load model information: the method comprises the steps of defining the position of a certain object as a relative coordinate origin in a specific scene, converting absolute coordinate values of other objects into relative coordinate values, and performing dynamic rendering based on the relative coordinate values.
Different relative coordinate origins are defined in different scenes, and when the model information is subjected to flow conversion among a plurality of scenes, only the relative coordinate values of the model information under different scenes need to be converted, so that the rendering calculation with higher efficiency is obtained.
For example, the inlet of the stope is defined as a first relative coordinate origin in the charging link, the charging trolley, the ore body and the personnel in the stope adopt corresponding relative coordinate values, the positions of the charging trolley, the ore body and the personnel are changed along with the deepening of the mining process, and the relative coordinate values under different scenes are only required to be changed; and in the transportation link, the sliding well mouth is defined as the origin of the second relative coordinate, and the motion of the transportation equipment is presented by the change of the second relative coordinate value. The mode can expand a new mode of the object by using relative coordinates, the incidence relation of the object is used for replacing an absolute assignment relation, the mode is more flexible, a certain object can be independently modified without influencing other individuals, the condition that the model is penetrated or the chartlet is disappeared when the model is enlarged or reduced due to the fact that the coordinates are not reset to zero in the three-dimensional simulation process can be effectively avoided, and the actual condition that a gold underground mine changes constantly along with the mining work is well met.
The position of the underground main roadway is determined according to the overall design of a mine, but necessary modification is needed in the construction process according to the actual situation, and the roadway of a mining area needs to be gradually corrected according to the existing roadway and the geological change situation, so that the center line usually comprises the center line of the roadway during design and the center line of the roadway during the actual mining process.
In the three-dimensional simulation process, when the personnel positioning center lines are complex, all the roadway center lines are used as the personnel positioning center lines, and network calculation fails. When the method is used for personnel positioning network calculation, a roadway center line (a line formed by connecting roadway section center points) in the actual mining process is used as a reserved center line, the roadway center line in the design is deleted, the roadway center line in the actual mining process is corrected in real time according to the existing roadway and geological change conditions in the mining process, the generated roadway is ensured to be unique and accurate, and the personnel positioning center line determined on the basis of the roadway center line is also uniquely determined (because the underground mine personnel scattering position is necessarily dependent on the roadway position), so that the personnel positioning network calculation of the gold underground mine is successful.
Step four: the UI interface and the interaction function of the gold underground mine three-dimensional simulation are perfected, and a user can feel the mining process more intuitively and freely.
The human-computer interaction is supported, and the operator can realize the simulated human-computer interaction through UI interface interaction and gesture interaction; the method supports customized operation, can edit parameters as required, completes personalized simulation construction, has higher flexibility, and can cooperate with the operation sequence and action of image-text, voice explanation introduction equipment and process flow through three-dimensional interaction.
Further, the method also comprises the step of making the script according to a specific process flow, and the specific method comprises the following steps:
editing a script making task script by adopting IDE programming (mainly Microsoft visual studio), and creating action types, wherein the action types comprise playing, pausing, advancing, backing and double-speed playing;
the method comprises the steps of carrying out content-based coding on output audio and video (parameters are the shape, texture and movement of a model), serializing the coded audio and video, storing the serialized audio and video content to a file of a magnetic disk in a byte mode, and actually playing a decoded serial byte stream during playing;
adding a plurality of threads (namely a plurality of continuous control flows) to a video player, wherein the corresponding playing threads are in a thread ready queue before playing, and waiting for a system to distribute a CPU (Central processing Unit);
after the system selects the thread to be played according to the script time sequence, the selected thread enters an execution state from a ready state, the action is called 'CPU scheduling', and the corresponding thread is released after the playing is finished.
The mode of Editor and SimulatorCEGUI cannot be selected in the traditional script making, when the script is played, a pause button is clicked, the script stops playing, the script is clicked again, and the script starts playing from the beginning, namely the script 'along with the point and along with the play' is not supported. The method realizes the play at any point through the cooperation of the serialization of the files and the threading of the player.
The method carries out three-dimensional digital modeling on the ground and underground scenes of the mine, the geologic bodies of the mine bed, the well and drift engineering, the mining, the mineral separation, the tailing treatment and production processes and the related phenomena caused by the processes by using the technical means such as the three-dimensional GIS, the virtual reality VR and the like, and realizes the real-time high-simulation display of the production environment, the production condition, the safety monitoring and the states of personnel and equipment of the mine.
Claims (10)
1. A three-dimensional simulation method for a gold underground mine mining process is characterized by comprising the following steps:
the method comprises the following steps: collecting information of various production equipment related to a gold underground mine mining process, generating a simulation model of each production equipment through three-dimensional modeling software, and establishing an equipment model library;
step two: combing and forming a mining operation standard flow, and building a gold underground mine three-dimensional simulation environment by using three-dimensional modeling software;
step three: importing a production equipment model by using three-dimensional action software and programming software, simulating and reproducing a mining production process, and synchronously loading the three-dimensional simulation scene of the gold underground mine;
step four: and the UI interface and the interaction function of the gold underground mine three-dimensional simulation are perfected.
2. The three-dimensional simulation method of the gold underground mine mining process of claim 1, characterized by: performing global organization on the gold underground mine three-dimensional simulation model by using an LOD loading mode, wherein a simulation object comprises an image layer class, a data source class, an object model class and a rendering class, and each image layer class, data source class and object model class respectively correspond to the rendering class in one rendering module; and during loading, constructing octree grids for all model data source classes and adding spatial indexes, and loading corresponding data according to spatial division and delivering the data to a rendering module for dynamic rendering during user operation.
3. The three-dimensional simulation method of the gold underground mine mining process of claim 2, characterized by: step three, the dynamic rendering specifically comprises the steps of setting a shader program for the layer attributes to complete rendering, and performing action editing and action rendering for the motion attributes; and determining the resource allocation of object loading according to the position and the importance of the node of the object model in the display environment, reducing the number of faces and the detail of the non-important object, and obtaining high-efficiency rendering calculation.
4. The three-dimensional simulation method of the gold underground mine mining process of claim 2, characterized by: the third step further comprises loading model information in a relative coordinate mode: defining the position of a certain object as a relative coordinate origin in a specific scene, converting absolute coordinate values of other objects into relative coordinate values, and performing dynamic rendering based on the relative coordinate values.
5. The three-dimensional simulation method of the gold underground mine mining process of claim 4, characterized by comprising the following steps: and step three, defining different relative coordinate origins in different scenes, and converting the relative coordinate values of the model information in different scenes when the model information is converted among the scenes.
6. The three-dimensional simulation method of the gold underground mine mining process of claim 1, characterized by: and step three, for the dynamic equipment, firstly, an inertial motion capture system is used for capturing the motion of the role, the captured motion is smoothed and adjusted by using three-dimensional motion software to form a motion library, then, the three-dimensional motion software is used for carrying out node axis correction and parent-child node setting and then outputting the motion library to a virtual engine, IK and physical simulation functions are used in the virtual engine to configure the equipment into the dynamic equipment with controllable motion state, and finally, the dynamic model is loaded to the three-dimensional simulation scene of the gold underground mine.
7. The three-dimensional simulation method of the gold underground mine mining process of claim 1, characterized by: and step two, the mining operation specification flow is formed, wherein viewpoints are added among different procedures of the mining operation specification flow, and the different viewpoints are linked for quick switching and roaming among different procedures.
8. The three-dimensional simulation method of the gold underground mine mining process of claim 1, characterized by: establishing a gold underground mine three-dimensional simulation environment by using three-dimensional modeling software, wherein the three-dimensional simulation environment comprises the step of adopting three-dimensional digital mining software to carry out geological modeling to generate an ore body model or adopting point cloud data generated by on-site measurement of a mine to carry out modeling;
the point cloud data generated by the mine field measurement is used for modeling, and the method specifically comprises the following steps: the method comprises the steps of firstly converting the original format of point cloud data into rcs or rcp files which can be utilized by Autodesk software through recap software, then loading point cloud through 3DMAX software and modeling, and after the three-dimensional simulation scene model is built, performing real material simulation through material drawing software.
9. The three-dimensional simulation method of the gold underground mine mining process of claim 1, characterized by: the fourth step comprises the step of making the script according to a specific process flow, and the specific method comprises the following steps:
editing a script making task script by adopting IDE programming, and creating action types, wherein the action types comprise playing, pausing, advancing, backing and double-speed playing;
carrying out content-based encoding on the output audio and video, serializing the encoded audio and video, and storing the serialized audio and video content to a file of a magnetic disk in a byte form;
adding a plurality of threads to a video player, wherein the corresponding playing threads are in a thread ready queue before playing, and waiting for a system to distribute a CPU (central processing unit), and the threads are a plurality of continuous control flows;
and after the system selects the thread to be played according to the script time sequence, the selected thread enters an execution state from a ready state, and the corresponding thread is released after the playing is finished.
10. The three-dimensional simulation method of the gold underground mine mining process as claimed in any one of claims 1 to 9, wherein: and step three, when personnel positioning network calculation is carried out, the actual roadway center line is used as a reserved center line, the designed roadway center line is deleted, and the actual roadway center line is corrected in real time according to the existing roadway and geological change conditions in the mining process.
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| CN116312127A (en) * | 2023-05-19 | 2023-06-23 | 南京禹步信息科技有限公司 | Mine immersion education training method, terminal and storage medium based on VR technology |
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