CN109657310B - Real-time dynamic virtual reality simulation method for gas explosion in coal mine - Google Patents
Real-time dynamic virtual reality simulation method for gas explosion in coal mine Download PDFInfo
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- CN109657310B CN109657310B CN201811490856.6A CN201811490856A CN109657310B CN 109657310 B CN109657310 B CN 109657310B CN 201811490856 A CN201811490856 A CN 201811490856A CN 109657310 B CN109657310 B CN 109657310B
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- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The invention discloses a real-time dynamic virtual reality simulation method for gas explosion in a coal mine, and belongs to the field of disaster prevention. The implementation method of the invention comprises the following steps: researching the actual condition of the mine, and collecting mine development and ventilation data; according to the collected mine development and ventilation data, 2 basic modules of a mine three-dimensional explosion autonomous simulation module and a mine three-dimensional entity module are established, a real-time dynamic three-dimensional explosion virtual scene which accords with a gas explosion propagation rule is formed by utilizing the 2 basic modules, and the real-time dynamic display simulation of the three-dimensional explosion virtual scene is carried out; the three-dimensional explosion virtual scene is used for dynamically displaying the simulation result in real time, so that an observer can experience the whole process of gas explosion in a coal mine in an immersive manner, dynamic sensing, evaluation and prevention of gas explosion accidents are facilitated, and the dynamic sensing capability and the disaster prevention effect of the gas explosion accidents are improved.
Description
Technical Field
The invention relates to a real-time dynamic virtual reality simulation method for gas explosion in a coal mine, and belongs to the field of disaster prevention.
Background
In recent years, along with the gradual deepening of the coal mine safety production work in China, the overall safety production level of a coal mine is greatly improved, and the coal mine safety production is in a development situation of overall stability and tendency to improvement. Nevertheless, the situation of safe production is still severe, the total accident amount is still large, the serious accident is frequent, and the coal mine accident accounts for 72.8% -89.6% of the serious accident of more than 10 deaths of industrial and mining enterprises at one time. According to mine accident analysis and authoritative data statistics, gas explosion, coal and gas outburst and secondary accidents caused by the gas explosion and the coal and gas outburst are the first killers which cause serious casualties of coal mines and threaten the lives of miners. The research on the characteristics of gas explosion accidents is always a popular research field.
At present, coal mine explosion simulation software can simulate the propagation process of explosion shock waves and explosion temperature, but special post-processing software is needed to display the change image of a single physical field, the macroscopic change process of explosion propagation cannot be reflected visually, and the research result cannot be understood and served for coal mine base level safety technical workers. Therefore, a virtual reality technology is utilized, a computer graphics technology is utilized, a virtual gas explosion scene is constructed based on real mine roadway arrangement, and a user obtains experience close to real gas explosion accidents through senses such as vision, hearing, touch and the like by utilizing output equipment. However, the scene is completely made artificially, does not conform to the basic rule of gas explosion propagation, and cannot reflect the actual explosion propagation characteristics of the mine.
Disclosure of Invention
The invention discloses a real-time dynamic virtual reality simulation method for coal mine underground gas explosion, which aims to solve the technical problems that: the real explosion propagation parameters obtained by the explosion simulation software are combined with elements such as impact, flame, sound and the like for displaying an explosion scene, a virtual gas explosion scene which accords with a gas explosion propagation rule is constructed and used for dynamically sensing, evaluating and preventing gas explosion accidents, and further the dynamic sensing capability and the disaster prevention effect on the gas explosion accidents are improved.
The purpose of the invention is realized by the following technical scheme.
The invention discloses a real-time dynamic virtual reality simulation method for coal mine underground gas explosion, which comprises the following steps:
the method comprises the following steps: and (5) researching the actual condition of the mine, and collecting mine development and ventilation data. The mine development and ventilation data comprise main ventilation routes and topological relations of the mine, roadway sections, support forms, wind resistance coefficients and ventilation structure information.
The specific implementation method of the step one is as follows:
step 1.1: collecting a plan view and a three-dimensional view of a ventilation system of a mine to obtain a mine ventilation route and a ventilation network topological relation, wherein the mine ventilation route and the ventilation network topological relation comprise the length of each roadway, the coordinate value of each roadway node and the connection relation of each roadway node;
step 1.2: collecting mine development mining plane drawings, and obtaining the support type and the cross-sectional shape of each roadway of the mine.
Step 1.3: key equipment and layout drawings in each roadway are investigated on site, and the key equipment and the layout drawings comprise a coal mining machine, a coal mining support, a heading machine, a track, a belt, an air duct, a pipeline and an air door.
Step two: and (3) establishing 2 basic modules of a mine three-dimensional explosion autonomous simulation module and a mine three-dimensional entity module according to mine development and ventilation data collected in the step one, forming a real-time dynamic three-dimensional explosion virtual scene which accords with a gas explosion propagation rule by utilizing the 2 basic modules, and carrying out real-time dynamic display simulation on the three-dimensional explosion virtual scene.
The concrete implementation method of the second step is that,
step 2.1: the method comprises the steps of establishing a mine three-dimensional explosion autonomous simulation module, wherein the mine three-dimensional explosion autonomous simulation module comprises the steps of establishing a mine three-dimensional roadway geometric model, establishing a gas explosion mathematical model, initializing mine gas, rapidly and autonomously simulating mine gas explosion, reading and storing data of explosion overpressure and explosion temperature.
The step 2.1 is realized by the following specific method:
step 2.1.1: and constructing a three-dimensional mine roadway geometric model by utilizing modeling software according to the length of each roadway, the coordinate value of each roadway node, the connection relation of each roadway node and the cross section shape of each roadway.
Step 2.1.2: and meshing the geometric model by utilizing meshing software.
Step 2.1.3: and establishing an unstable Navier-Stokes equation, a standard k-turbulent combustion model and a mixed model of finite rate and vortex dissipation which meet the requirements of mass conservation, momentum conservation, energy conservation and chemical component balance, solving a control equation, and realizing the numerical simulation of gas explosion.
Step 2.1.4: and (4) initializing mine gas, namely initializing a gas out-of-limit range, a gas concentration and an ignition source position.
Step 2.1.5: and performing rapid and autonomous simulation on mine gas explosion, and reading and storing data of explosion overpressure and explosion temperature according to a simulation result. Setting a data monitoring point every other preset interval distance in a numerical simulation model, setting a time step length of numerical simulation, reading explosion pressure and flame data of each data monitoring point every preset time, and storing the data of explosion overpressure and explosion temperature in a database in real time according to a simulation result, wherein each group of data in the database comprises a three-dimensional coordinate position, time, explosion pressure and explosion flame, and the three-dimensional coordinate position comprises a transverse x direction, a longitudinal y direction and a vertical z direction.
Step 2.2: the mine three-dimensional entity module is used for constructing a mine three-dimensional virtual scene model, establishing a virtual simulation element database of explosion flame color, explosion sound intensity, article damage and the like, and constructing a corresponding relation between each element and explosion temperature and explosion overpressure.
The step 2.2 is realized by the following specific method:
step 2.2.1: constructing a mine three-dimensional entity module virtual scene by using three-dimensional drawing software according to the 2.1 medium mine three-dimensional roadway geometric model and the 1.2 medium mine roadway support types and cross-sectional shapes;
the support types of the roadway comprise anchor rod support, anchor rod and anchor net support, anchor rod and anchor beam support, anchor rod and anchor net guniting support, plain guniting support, arch stone arching support, cast-in-place reinforced concrete support, U-shaped steel support, I-shaped steel three-section shed support and naked body support.
The cross section shape comprises rectangle, trapezoid, polygon, arch, circle, horseshoe and ellipse.
Step 2.2.2: drawing three-dimensional images of coal mining machines, coal mining supports, heading machines, tracks, belts, air cylinders, pipelines and air door equipment in a normal working state, determining specific coordinate positions of the equipment in a virtual scene of a mine three-dimensional entity module according to the actual arrangement condition of the equipment in a roadway, and forming a normal state image database and a coordinate position database of the equipment.
Step 2.2.3: in a full-size gas explosion experiment tunnel, a coal mining machine, a coal mining support, a tunneling machine, a track, a belt, an air duct, a pipeline and air door equipment are reasonably arranged, and an explosion pressure, explosion flame brightness, an explosion temperature and an explosion sound intensity test sensor is arranged for carrying out a gas explosion experiment.
Step 2.2.4: recording three-dimensional images of each device after being damaged by impact under different explosion pressures, and drawing a damage state model of each device under different damage pressures by using three-dimensional drawing software. And establishing an equipment destruction state database corresponding to the explosion pressure and each equipment destruction state model by using the database.
Step 2.2.5: and respectively recording data of explosion temperature and explosion flame color by using the explosion temperature and explosion flame brightness sensors, and establishing a database corresponding to the explosion flame temperature range and the explosion flame color.
Step 2.2.6: and measuring the relation between the explosion pressure and the explosion sound intensity by using the explosion pressure and explosion sound intensity sensors, and establishing a database corresponding to the explosion pressure and the explosion sound intensity.
Step 2.3: and reading simulation elements in the virtual simulation element database in real time according to explosion pressure and explosion temperature real-time data obtained by the mine three-dimensional explosion autonomous simulation module, and mapping the corresponding simulation elements into a mine three-dimensional virtual scene in real time, so as to form a real-time dynamic three-dimensional explosion virtual scene which accords with a gas explosion propagation rule, and performing real-time dynamic display simulation on the three-dimensional explosion virtual scene.
The step 2.3 is realized by the following specific method:
step 2.3.1: and the mine three-dimensional entity module senses the generation of data output by the explosion autonomous simulation module by using a named pipeline and a shared memory interprocess communication mechanism, and then reads real-time data output by the explosion autonomous simulation module in a database.
Step 2.3.2: and adding a camera object in the virtual scene, and setting a camera control mode to enable the camera to move and rotate in the virtual scene through the movement of a keyboard and a mouse so as to observe the explosion condition in the virtual scene.
Step 2.3.3: and generating flames in the virtual scene according to the explosion temperature of each space position in the real-time data and an explosion temperature-explosion flame color mapping table in the database, and adding particle special effects, wherein the particle special effects comprise Mars, smoke and air refraction.
Step 2.3.4: and adding a special effect destruction trigger for each device in the virtual scene, and playing corresponding destruction state animation in the database when the destruction pressure of the device at the position reaches the pressure value set by the trigger.
Step 2.3.5: adding a sound effect trigger for each object in the virtual scene, playing the corresponding sound effect in the database when the pressure of the position of the object reaches the pressure value set by the trigger or triggers other conditions set by the trigger, and dynamically adjusting the sound size of the sound effect according to the distance between the object and the camera object.
Step 2.3.6: and forming a real-time dynamic three-dimensional explosion virtual scene according to the step 2.3.1 to the step 2.3.5, and carrying out real-time dynamic display simulation on the three-dimensional explosion virtual scene.
Step three: and (3) dynamically displaying and simulating the three-dimensional explosion virtual scene in real time by utilizing the step 2.3, and dynamically sensing, evaluating and preventing the explosion accident, thereby improving the dynamic sensing capability and the disaster prevention effect on the gas explosion accident.
Has the advantages that:
1. the invention discloses a real-time dynamic virtual reality simulation method for gas explosion in a coal mine, which comprises the steps of establishing a mine three-dimensional explosion simulation module, simulating explosion generation, development and propagation processes according to defined factors such as the concentration, the volume, the ignition energy and the like of an explosion source gas, and obtaining the corresponding relation between explosion overpressure and explosion temperature and coordinates and time; obtaining the corresponding relation between the explosion flame temperature and the flame color, the explosion overpressure and the equipment damage, and the explosion overpressure and the sound intensity through a full-size gas explosion experiment, and establishing a virtual simulation element database of the explosion flame color, the sound intensity, the equipment damage and the like; and extracting real-time change data of explosion overpressure and explosion flame temperature along with time and space in the mine three-dimensional explosion simulation result, calling corresponding elements in the virtual simulation element database in real time, and performing real-time dynamic display simulation.
2. The real-time dynamic virtual reality simulation method for the coal mine underground gas explosion performs real-time dynamic display simulation on the three-dimensional explosion virtual scene, can display the dynamic spreading process of the coal mine underground gas explosion in real time by a virtual reality method, an observer can personally experience the whole process of the coal mine underground gas explosion, and the simulation result is favorable for dynamic perception, evaluation and prevention of gas explosion accidents.
Drawings
FIG. 1 is a flow chart of a real-time dynamic virtual reality simulation method for gas explosion in a coal mine;
FIG. 2 is a flow chart of a three-dimensional explosion autonomous simulation module of a mine;
FIG. 3 is a diagram of a three-dimensional mine solid module;
fig. 4 is a flow chart of a three-dimensional explosion virtual scene.
Detailed Description
For a better understanding of the objects and advantages of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1:
as shown in fig. 1, the method for real-time dynamic virtual reality simulation of gas explosion in an underground coal mine disclosed in this embodiment includes the following steps:
the method comprises the following steps: and (5) researching the actual condition of the mine, and collecting mine development and ventilation data. The mine development and ventilation data comprise main ventilation routes and topological relations of the mine, roadway sections, support forms, wind resistance coefficients and ventilation structure information.
The specific implementation method of the step one is as follows:
step 1.1: collecting a plan view and a three-dimensional view of a ventilation system of a mine to obtain a mine ventilation route and a ventilation network topological relation, wherein the mine ventilation route and the ventilation network topological relation comprise the length of each roadway, the coordinate value of each roadway node and the connection relation of each roadway node;
step 1.2: collecting mine development mining plane drawings, and obtaining the support type and the cross-sectional shape of each roadway of the mine.
Step 1.3: key equipment and layout drawings in each roadway are investigated on site, and the key equipment and the layout drawings comprise a coal mining machine, a coal mining support, a heading machine, a track, a belt, an air duct, a pipeline and an air door.
Step two: and (3) establishing 2 basic modules of a mine three-dimensional explosion autonomous simulation module and a mine three-dimensional entity module according to the mine development and ventilation data collected in the step one.
The concrete implementation method of the second step is that,
step 2.1: the method comprises the steps of establishing a mine three-dimensional explosion autonomous simulation module, wherein the mine three-dimensional explosion autonomous simulation module comprises the steps of establishing a mine three-dimensional roadway geometric model, establishing a gas explosion mathematical model, initializing mine gas, rapidly and autonomously simulating mine gas explosion, reading and storing data of explosion overpressure and explosion temperature.
The step 2.1 is realized by the following specific method:
step 2.1.1: and constructing a three-dimensional mine roadway geometric model by utilizing modeling software according to the length of each roadway, the coordinate value of each roadway node, the connection relation of each roadway node and the cross section shape of each roadway.
Step 2.1.2: and meshing the geometric model by utilizing meshing software.
Step 2.1.3: the method comprises the steps of establishing an unstable Navier-Stokes equation, a standard k-turbulence combustion model and a mixed model of finite rate and vortex dissipation which meet the requirements of mass conservation, momentum conservation, energy conservation and chemical component balance, solving a control equation by utilizing a SIMPLE algorithm, and realizing the numerical simulation of gas explosion.
Step 2.1.4: and (4) initializing mine gas, namely initializing a gas out-of-limit range, a gas concentration and an ignition source position.
Step 2.1.5: and performing rapid and autonomous simulation on mine gas explosion, and reading and storing data of explosion overpressure and explosion temperature according to a simulation result. Setting a data monitoring point every 1m in a numerical simulation model, setting the time step length of numerical simulation to be 1ms, reading explosion pressure and flame data of each data monitoring point every 40ms, and storing the data of explosion overpressure and explosion temperature in a database in real time according to the simulation result, wherein each group of data in the database comprises a three-dimensional coordinate position, time, explosion pressure and explosion flame, and the three-dimensional coordinate position comprises a transverse x, a longitudinal y and a vertical z)
Step 2.2: the mine three-dimensional entity module is used for constructing a mine three-dimensional virtual scene model, establishing a virtual simulation element database of explosion flame color, explosion sound intensity, article damage and the like, and constructing a corresponding relation between each element and explosion temperature and explosion overpressure.
The step 2.2 is realized by the following specific method:
step 2.2.1: constructing a mine three-dimensional entity module virtual scene by using 3Dmax according to a 2.1 middle mine three-dimensional roadway geometric model and the support type and the cross-sectional shape of each roadway of the mine in 1.2;
the support types of the roadway comprise anchor rod support, anchor rod and anchor net support, anchor rod and anchor beam support, anchor rod and anchor net guniting support, plain guniting support, arch stone arching support, cast-in-place reinforced concrete support, U-shaped steel support, I-shaped steel three-section shed support and naked body support.
The cross section shape comprises rectangle, trapezoid, polygon, arch, circle, horseshoe and ellipse.
Step 2.2.2: drawing three-dimensional images of coal mining machines, coal mining supports, heading machines, tracks, belts, air cylinders, pipelines and air door equipment in a normal working state, determining specific coordinate positions of the equipment in a virtual scene of a mine three-dimensional entity module according to the actual arrangement condition of the equipment in a roadway, and forming a normal state image database and a coordinate position database of the equipment.
Step 2.2.3: in a full-size gas explosion experiment tunnel, a coal mining machine, a coal mining support, a tunneling machine, a track, a belt, an air duct, a pipeline and air door equipment are reasonably arranged, and an explosion pressure, explosion flame brightness, an explosion temperature and an explosion sound intensity test sensor is arranged for carrying out a gas explosion experiment.
Step 2.2.4: recording three-dimensional images of each device after being damaged by impact under different explosion pressures, and drawing STL-format damage state models of each device under different damage pressures (0, 0.2MPa, 0.4MPa, 0.6MPa, 0.8MPa, 1MPa and above) by utilizing 3 Dmax. And establishing a device destruction state database with explosion pressure corresponding to the binary files of the STL models by using the SQL Server database.
Step 2.2.5: and respectively recording data of explosion temperature and explosion flame color (red-orange-yellow-white) by using explosion temperature and explosion flame brightness sensors, and establishing a database corresponding to the explosion flame temperature range and the explosion flame color.
Step 2.2.6: and measuring the relation between the explosion pressure and the explosion sound intensity by using the explosion pressure and explosion sound intensity sensors, and establishing a database corresponding to the explosion pressure and the explosion sound intensity.
Step 2.3: and reading simulation elements in the virtual simulation element database in real time according to explosion pressure and explosion temperature real-time data obtained by the mine three-dimensional explosion autonomous simulation module, and mapping the corresponding simulation elements into a mine three-dimensional virtual scene in real time, so as to form a real-time dynamic three-dimensional explosion virtual scene which accords with a gas explosion propagation rule, and performing real-time dynamic display simulation on the three-dimensional explosion virtual scene.
The step 2.3 is realized by the following specific method:
step 2.3.1: and the mine three-dimensional entity module senses the generation of data output by the explosion autonomous simulation module by using a named pipeline and a shared memory interprocess communication mechanism, and then reads real-time data output by the explosion autonomous simulation module in a database.
Step 2.3.2: and adding a camera object in the virtual scene, and setting a camera control mode to enable the camera to move and rotate in the virtual scene through the movement of a keyboard and a mouse so as to observe the explosion condition in the virtual scene.
Step 2.3.3: and generating flames in the virtual scene according to the explosion temperature of each space position in the real-time data and an explosion temperature-explosion flame color mapping table in the database, and adding particle special effects, wherein the particle special effects comprise Mars, smoke and air refraction.
Step 2.3.4: and adding a special effect destruction trigger for each device in the virtual scene, and playing corresponding destruction state animation in the database when the destruction pressure of the device at the position reaches the pressure value set by the trigger.
Step 2.3.5: adding a sound effect trigger for each object in the virtual scene, playing the corresponding sound effect in the database when the pressure of the position of the object reaches the pressure value set by the trigger or triggers other conditions set by the trigger, and dynamically adjusting the sound size of the sound effect according to the distance between the object and the camera object.
Step 2.3.6: and forming a real-time dynamic three-dimensional explosion virtual scene according to the step 2.3.1 to the step 2.3.5, and carrying out real-time dynamic display simulation on the three-dimensional explosion virtual scene.
Step three: and (3) dynamically displaying and simulating the three-dimensional explosion virtual scene in real time by utilizing the step 2.3, and dynamically sensing, evaluating and preventing the explosion accident, thereby improving the dynamic sensing capability and the disaster prevention effect on the gas explosion accident.
The above detailed description is intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above detailed description is only exemplary of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A real-time dynamic virtual reality simulation method for coal mine underground gas explosion is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
the method comprises the following steps: researching the actual condition of the mine, and collecting mine development and ventilation data; the mine development and ventilation data comprise main ventilation routes and topological relations of the mine, roadway sections, support forms, wind resistance coefficients and ventilation structure information;
step two: establishing 2 basic modules of a mine three-dimensional explosion autonomous simulation module and a mine three-dimensional entity module according to mine development and ventilation data collected in the step one, forming a real-time dynamic three-dimensional explosion virtual scene which accords with a gas explosion propagation rule by utilizing the 2 basic modules, and performing real-time dynamic display simulation on the three-dimensional explosion virtual scene;
the concrete implementation method of the second step is that,
step 2.1: establishing a mine three-dimensional explosion autonomous simulation module, wherein the mine three-dimensional explosion autonomous simulation module comprises a mine three-dimensional roadway geometric model, a gas explosion mathematical model, mine gas initialization, mine gas explosion rapid autonomous simulation, explosion overpressure and explosion temperature data reading and storing model;
the specific implementation method of the step 2.1 is that,
step 2.1.1: building a three-dimensional mine roadway geometric model by utilizing modeling software according to the length of each roadway, the coordinate value of each roadway node, the connection relation of each roadway node and the cross section shape of each roadway;
step 2.1.2: meshing the geometric model by using meshing software;
step 2.1.3: establishing an unstable Navier-Stokes equation, a standard k-turbulent combustion model and a mixed model of finite rate and vortex dissipation which meet the requirements of mass conservation, momentum conservation, energy conservation and chemical component balance, solving a control equation and realizing the numerical simulation of gas explosion;
step 2.1.4: initializing mine gas, namely initializing a gas out-of-limit range, a gas concentration and an ignition source position;
step 2.1.5: performing rapid and autonomous simulation on mine gas explosion, and reading and storing data of explosion overpressure and explosion temperature according to simulation results; setting a data monitoring point every other preset interval distance in a numerical simulation model, setting a time step length of numerical simulation, reading explosion pressure and flame data of each data monitoring point every preset time, and storing the data of explosion overpressure and explosion temperature in a database in real time according to a simulation result, wherein each group of data in the database comprises a three-dimensional coordinate position, time, explosion pressure and explosion flame, and the three-dimensional coordinate position comprises a transverse x direction, a longitudinal y direction and a vertical z direction;
step 2.2: the mine three-dimensional entity module is used for constructing a mine three-dimensional virtual scene model, establishing a virtual simulation element database of explosion flame color, explosion sound intensity, article damage and the like, and constructing a corresponding relation between each element and explosion temperature and explosion overpressure;
step 2.2 the specific implementation method is that,
step 2.2.1: constructing a mine three-dimensional entity module virtual scene by using three-dimensional drawing software according to the 2.1 medium mine three-dimensional roadway geometric model and the 1.2 medium mine roadway support types and cross-sectional shapes;
the support types of the roadway comprise anchor rod support, anchor rod and anchor net support, anchor rod and anchor beam support, anchor rod and anchor net guniting support, plain guniting support, arch stone arching support, cast-in-place reinforced concrete support, U-shaped steel support, I-shaped steel three-section shed support and naked body support;
the cross section shape comprises rectangle, trapezoid, polygon, arch, circle, horseshoe and ellipse;
step 2.2.2: drawing three-dimensional images of coal mining machines, coal mining supports, heading machines, tracks, belts, air cylinders, pipelines and air door equipment in a normal working state, determining specific coordinate positions of the equipment in a virtual scene of a mine three-dimensional entity module according to the actual arrangement condition of the equipment in a roadway, and forming a normal-state image database and a coordinate position database of the equipment;
step 2.2.3: in a full-size gas explosion experiment tunnel, reasonably arranging a coal mining machine, a coal mining bracket, a tunneling machine, a track, a belt, an air duct, a pipeline and air door equipment, and installing an explosion pressure, explosion flame brightness, an explosion temperature and an explosion sound intensity test sensor to perform a gas explosion experiment;
step 2.2.4: recording three-dimensional images of each device after being damaged by impact under different explosion pressures, and drawing a damage state model of each device under different damage pressures by using three-dimensional drawing software; establishing an equipment destruction state database corresponding to the explosion pressure and each equipment destruction state model by using the database;
step 2.2.5: respectively recording data of explosion temperature and explosion flame color by using explosion temperature and explosion flame brightness sensors, and establishing a database corresponding to the explosion flame temperature range and the explosion flame color;
step 2.2.6: measuring the relation between the explosion pressure and the explosion sound intensity by using an explosion pressure and explosion sound intensity sensor, and establishing a database corresponding to the explosion pressure and the explosion sound intensity;
step 2.3: and reading simulation elements in the virtual simulation element database in real time according to explosion pressure and explosion temperature real-time data obtained by the mine three-dimensional explosion autonomous simulation module, and mapping the corresponding simulation elements into a mine three-dimensional virtual scene in real time, so as to form a real-time dynamic three-dimensional explosion virtual scene which accords with a gas explosion propagation rule, and performing real-time dynamic display simulation on the three-dimensional explosion virtual scene.
2. The real-time dynamic virtual reality simulation method for gas explosion in a coal mine well according to claim 1, characterized in that: and step three, dynamically displaying and simulating the three-dimensional explosion virtual scene in real time by using the step 2.3, and dynamically sensing, evaluating and preventing explosion accidents, so that the dynamic sensing capability and the disaster prevention effect on the gas explosion accidents are improved.
3. The real-time dynamic virtual reality simulation method for gas explosion in a coal mine well as defined in claim 1 or 2, which is characterized in that: the specific implementation method of the step one is that,
step 1.1: collecting a plan view and a three-dimensional view of a ventilation system of a mine to obtain a mine ventilation route and a ventilation network topological relation, wherein the mine ventilation route and the ventilation network topological relation comprise the length of each roadway, the coordinate value of each roadway node and the connection relation of each roadway node;
step 1.2: collecting a mine development mining plan to obtain the support type and the cross-sectional shape of each roadway of the mine;
step 1.3: key equipment and layout drawings in each roadway are investigated on site, and the key equipment and the layout drawings comprise a coal mining machine, a coal mining support, a heading machine, a track, a belt, an air duct, a pipeline and an air door.
4. The real-time dynamic virtual reality simulation method for gas explosion in a coal mine well according to claim 3, characterized in that: the specific implementation method of the step 2.3 is that,
step 2.3.1: the mine three-dimensional entity module senses the generation of data output by the explosion autonomous simulation module by using a named pipeline and a shared memory inter-process communication mechanism, and then reads real-time data output by the explosion autonomous simulation module in a database;
step 2.3.2: adding a camera object in the virtual scene, and setting a camera control mode to enable the camera to move and rotate in the virtual scene through the movement of a keyboard and a mouse so as to observe the explosion condition in the virtual scene;
step 2.3.3: generating flames in a virtual scene according to the explosion temperature of each space position in the real-time data and an explosion temperature-explosion flame color mapping table in a database, and adding particle special effects, wherein the particle special effects comprise Mars, smoke and air refraction;
step 2.3.4: adding a special effect destruction trigger for each device in the virtual scene, and playing corresponding destruction state animation in the database when the destruction pressure of the device at the position reaches the pressure value set by the trigger;
step 2.3.5: adding a sound effect trigger to each object in the virtual scene, playing a corresponding sound effect in the database when the pressure of the position of the object reaches a pressure value set by the trigger or triggers other conditions set by the trigger, and dynamically adjusting the sound size of the sound effect according to the distance between the object and the camera object;
step 2.3.6: and forming a real-time dynamic three-dimensional explosion virtual scene according to the step 2.3.1 to the step 2.3.5, and carrying out real-time dynamic display simulation on the three-dimensional explosion virtual scene.
5. The real-time dynamic virtual reality simulation method for gas explosion in a coal mine well according to claim 4, characterized in that: in step 2.1.3, the control equation is solved by using the SIMPLE algorithm.
6. The real-time dynamic virtual reality simulation method for gas explosion in a coal mine well according to claim 5, characterized in that: the three-dimensional drawing software selects 3Dmax, and the database selects SQL Server database.
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| CN110378599A (en) * | 2019-07-22 | 2019-10-25 | 精英数智科技股份有限公司 | Ranking method, system, equipment and the computer storage medium of accident prevention quality |
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