Top-coal caving mining with hazard of coal and gas outburst

There are strict regulations in top-coal caving mining with hazard of coal and gas outburst.The main reason is the problem of safety.But analyzed according to frame of reference compared with other method,top-coal caving mining is not more dangerous than coal and gas outburst.In the practice there are several mines that have succeed in mining height seams with coal and gas outburst by the method of top-coal caving.Even now there are some coal mine experimenting the method of top-coal caving mining coal and gas outburst seams.Top-coal caving of the coal seam with coal and gas outburst hazards should not be prohibited by regulation.Great progress of top-coal caving ought to be made by science and technology,and the goal of safety and profit of production can be gotten.The method of top-coal caving with outburst hazard is an important item that needs serious research.