Abstract
Three working face of a mine 250203, 250205, 250206 as the research object, the establishment of a geomechanical model according to the actual situation of the project. FLAC3D using numerical simulation method to analyze section coal pillar width in 20 m, 10 m, when 0 m, Face sequential mining process key strata caving stride, the instability from the pillar damage induced rock burst dangerous. The results showed that: (1) the reasonable width of coal pillars can effectively reduce the occurrence of rock burst; (2) a composite key layer of destruction and instability is the main mine rock burst occurred.
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