Analysis of Rock Burst Precursory Information with Microseismic Monitoring at Coal Pillar Width Variation Area

We take 2102 working face return airway in a mine as the research object, and carry out statistical analysis of the tunneling process changes in coal pillar width by the microseismic monitoring data, study mine earthquake parameter change law, analyze strong mining-induced earthquake precursor information, and propose the coal pillar width changes area rock-burst prevention measures, and achieve good control effect, which ensures the safety production of heading face to pass through the coal pillar variation areas.