Impact precursor information identification method based on microseismic event time fractal

The invention relates to a microseismic event time fractal-based impact precursor information identification method for an underground coal mine working face. According to the method, the event fractal dimension of a micro-seismic event is utilized, the relation among the micro-seismic event, time and impact display is established, the core of the method comprises the steps that according to the micro-seismic measuring point arrangement principle and method, the depth of a complete coal and rock mass is determined through theoretical analysis or borehole peeping or loose circle sound velocity testing or other methods, and then the arrangement depth of a micro-seismic probe is determined; the calculation method of the fractal dimension of the microseismic event comprises a statistical method of the microseismic event, a time fractal dimension method of the microseismic event, a time fractal structure judgment method of the microseismic event and a fractal dimension calculation method of a time sequence of the