A multi-parameter aggregative indicator forecasting method of a
coal petrography dynamic disaster is suitable for forecasting
coal petrography dynamic disasters such as outburst of
coal and gas and rock bust of coal and gas in a coal mine excavating process. When various index
prediction methods are coupled in the same
monitoring system, problems such as how to select importance degrees of various indicators and how to determine a critical value of the various indicators are produced. According to amplitude values of four indicators including
electromagnetic radiation, slight shock,
acoustic emission and gas density, an average value of the amplitude values in a
normal level and the maximum value of the amplitude values of the four indicators when the
coal petrography dynamic disasters happen at any moment, the multi-parameter aggregative indicator forecasting method of the
coal petrography dynamic disaster determines a
single indicator hazard index of the four indicators at the moment. The value of single index
hazard index determines single index weights of the four indicators, and therefore an aggregative indicator
hazard index of the four indicators is calculated, and finally a danger class of the
coal petrography dynamic disaster which happens in an excavating roadway is determined according to the value of the aggregative indicator
hazard index. The multi-parameter aggregative indicator forecasting method of the coal petrography dynamic disaster provides a critical value determination method and an early warning standard for the research and development of a multi-parameter
monitoring system of the coal petrography dynamic disaster.