Study On Virtual Mine Key Technical Principles And Application Based On Polarized Light

Coal mine is a complex large-scale system, which primarily includes several sub-systems such as the coal mine geology, coal mining, development, transportation, ventilation safety, promotion, draining, communication, power supply, illumination and etc. For each sub-system there are massive data which need to be collected, transmitted and processed. The unpredictability, the complexity and the non-repeatability of the coal mine production environment could make it more difficult to work safely in the coal mine industry.Visual Reality is the cross-discipline integrated by computer graphics, the technologies of human-machine interface, computer simulation, multimedia and sensing, which is due to the rapid development of information science in recent years. Visual Reality can effectively integrate the complex geological data of different origins, formats and types and express the three dimensional data of ore body which will facilitate the specialists to analyze the inner relations of different data. The utilization of Visual Reality may simulate the disaster accidents of coal mine, improve the emergency processing and abilities of command and decision to the unexpected accidents, strengthen the safety consciousness of the staff, sharpen the danger recognition capability and standardize the operating methods, so that it could reduce the damage degree of mine disasters.The crucial technology of virtual coal mine system based on polarized light is studied and established in this paper, and mainly includes:1) Proposed the solutions for establishing the relational database on Microsoft SQL Server by ADO Technology; built the database system of coal mine production technology on AutoCAD; solved the storage and management problems of systematic massive, neterogeny and multi source data; provided abundant historical and real-time data for the virtual mine based on polarized light and enriched its contents.2) According to the characteristic of coal mine geologic body, construction of the three dimension stratum model on basis of drill hole data was given, the corresponding algorithm and programming were completed and finally the geological model of the virtual mine based on polarized light was constructed.3) In view of the requirements of three dimensional roadway modelling and basic features of mine roadway, the roadway database design and the algorithm of three dimensional modelling were completed; the solution of virtual sound of the virtual mine was achieved; the lifelike virtual mine scene was established. 4) The design and modeling of the virtual miner for the coal mine was completed, a lifelike virtual miner model was constructed so that the intelligence, friendliness and interactivity of the virtual mine could be enhanced.5) The first deomestic virtual mine system based on the stereoscopic display of the polarized light was established in Pangzhuang Coal Mine, where the lifelike virtual mine model could be observed by the user with polarized light glasses; the real-time display of the production data, equipment emulation and the simulations of the system and accidents were achieved, which brought convenience to the mine technology analysis, staff training, accident simulation and etc.Traditional coal mine industry and Visual Reality were integrated organically in this thesis, research of the virtual mine based on the stereoscopic display of the polarized light was done, the database system for the coal mine production technology and virtual coal mine based on polarized light were established, which have been applied to some coal mines.