HAZARDS OF ROCK BURST IN ISLAND COAL FACE AND ITS CONTROL
孤岛工作面冲击矿压危险及其控制

At the island coal face and its surrounding roadways,the stress concentration is at a very high level,the movement of the roof is also drastic,and the influence of the geological tectonics is significant. The more the mining depth is,the more the hazard degree of rock burst is. So the rock burst can be rendered easily near the island coal face,and monitoring,forecasting and controlling of the hazard are necessary. Firstly,the hazard extent of rock burst is analyzed to determine the index of the hazard of rock burst and to present the incipient forecast. Secondly,the rock burst can be forecasted instantaneously with electromagnetic emission (EME) and drillings. Finally,the island coal face should be handled with relieving shot,and the effect of control measures can be proved with EME and drillings. The practices prove that the presented technology can assure the safety and high production efficiency of the coal face.