Method prediction outburst coal seams. This invention relates to the safety of mining operations on brosoopasnym You are a coal seams. With the aim of reducing labor costs and improving the reliability of the method is provided continuously determine the dynamics of variation of the fortress coal during the drilling at a portion equal to the depth of the hole, and the area where the fortress coal decreases to 50% or more compared with nevybrosoopasnym portion.
展开▼
