In order to enrich working face burst risk assessment method and advance the prevention and control system of coal burst,a comprehensive coal burst risk index W that integrates four evaluation indicators was estab-lished by combining the theoretical analysis and engineering practice.Combined with seismic source positioning and wave velocity tomography technology,comprehensive early warning of coal burst risk in each mining area was achieved.The results show that the seismic source is concentrated,and the wave velocity is abnormally high in the area with complex geological conditions and irregular coal pillars.The burst risk comprehensive evaluation index W established by integrating multi-index weighting has a good coupling relationship with the number and energy level of the seismic source,which can adapt to the burst risk evaluation of working face.The coal burst risk evaluation method that integrates source location,wave velocity tomography and multi-index fusion weighting can realize the identification of high stress concentration area,the positioning of burst risk area,the judgment of burst risk level and the detection of pressure relief effect.The research can provide some reference and guidance for the prevention and control of coal mine dynamic disaster.
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