Rockbursts In Coal Mines & Their Prevent

The article discusses the prevention of rockbursts in coal mines, which have been proven to be highly effective. The methods include laying out the workings in a way that minimizes dangerous ground stresses and using techniques such as blasting, drilling, or water infusion. The article also provides examples of these methods being used in German coal mines, which are the deepest in the world. It covers topics such as the occurrence of rockbursts, the influence of rock stress, and long-term and direct prevention methods. It also includes case histories of successful prevention techniques.

The preventive methods described have proved highly effective. They comprise laying out the workings in such a way as to minimize dangerous concentrations of ground stresses, and early elimination by means of blasting, drilling, or water infusion. An account of these methods as applied in German coal mines, the deepest in the world. Contents: Rockbursts similar phenomena; Conditions of occurrence; Influence of rock stress; Bursting nonbursting coal; Long-term prevention; Direct prevention; Borehole patterns for direct prevention; Destressing methods; Case histories.