Computer Animation of Hot Spot Development in Bulk Coal asan Aid for Training Coal Miners

摘要

The processes that take place during the development of a heating arerndifficult to visualise. Bulk coal self-heating tests at The University ofrnQueensland (UQ) using a two-metre column are providing graphicrnevidence of the stages that occur during a heating. Data obtained fromrnthese tests, both temperature and corresponding off-gas evolution can berntransformed into what is effectively a video-replay of the heating event.rnThis is achieved by loading both sets of data into a newly developedrnanimation package called Hotspot. The resulting animation is ideal forrnspontaneous combustion training purposes as the viewer can readilyrnidentify the different hot spot stages and corresponding off-gasrnsignatures. Colour coding of the coal temperature, as the hot spot forms,rnhighlights its location in the coal pile and shows its ability to migraternupwind. An added benefit of the package is that once a mine has beenrntested in the UQ two-metre column, there is a permanent record of thatrnparticular coals performance for mine personnel to view.