Abstract
Communication in underground is essential for mine safety and the importance is increasing rapidly. JCOAL and CSIRO in Australia are cooperating a research project about underground communication and risk management information system. The aim of the research is to make a revolutionary new mine safety monitoring system that involves a total risk management information system called Nexsys in the center. The new monitoring system intends to include a real time risk profile that indicates safety conditions in underground and decision support system that offer appropriate counter measures to mine operators in case of an accident. To realize these functions a knowledge base about various accidents is very important. Historical various accidents data on gas explosions and spontaneous combustions in Japan have been reviewed and a new accident knowledge base has been developed which includes newly-made three dimensional views of mine structure where the accidents occurred.Ventilation is a key factor for underground mine safety. An abnormal condition in a ventilation network such as a mine fire or roadway collapse is reflected on ventilation airflow rates rapidly. A computer program to locate the abnormal condition in the network using the airflow data from underground through the mine monitoring system was also developed and tested to add a useful tool to the new monitoring system. The details about the method for locating of abnormal condition in the network are described in the paper.
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