Because of overlying igneous rocks, especially the very thick igneous rocks (the thicknessh≥100m), the coal rock shock, coal and gas outburst disasters and mine earthquake produced by very igneous rocks rupture are increasingly more when mining under the very thick igneous rocks. With the continuously downward extension of mining depth, the safety threat and effect to seam mining from igneous rocks buried deeply increases gradually. By researching the outburst disasters condition of the mine which is typica...