| Three-dimensional modeling and development of mining CAD is a hot spot and difficulty which mining geography information system (MGIS) study. The mining tunnel design is main study object. Because spatial topological design of mining tunnel have more to do with the area of coalfield, the inclination of coal bed, exploitation condition, and so on. The quality of tunnel design will influence directly the running mode of exploitation, ventilation, traffic, safety, etc. So, the study of three-dimensional modeling and display concerning mining tunnel has important applied value.Some discussions with practice and application are deployed in the thesis, associating with the status of mining CAD application and the architectural feature of various tunnels of mine now. With the computer-aided design as develop platform, ObjectARX software package as develop tool, Access as background database,the thesis also have got some analysis combined with measuring data and the topological design of mining tunnel about the running mode of exploitation, ventilation, traffic, in major state-owned mine today.On the base of analyzing and summing up various the architectural features of tunnels, the thesis gains mutual frame-shapes of mining tunnels. The frame-shapes are parted some independent frame picture-parts, and each of frame-part is digital analyzed. Finally, the programmers are designed and developed on the base of parameters. The main aims of the thesis are implementing three-dimensional modeling and display. The focal point of program is able to quickly and accurately graphing three-dimensional mining tunnels with the measured data and the develop platform of the computer-aided design. The programmer will be able to show the spatial topological design and interrelation among these mining tunnels with visual pattern too. So, the thesis has too much fact meaning for application of mining project design, safety in production, and make a strategic decision.
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