【摘要】 孤岛工作面及其周围巷道附近应力集中程度高,顶板运动剧烈,再加上地质构造的影响,采深较大时,冲击危险程度就高,很容易引发冲击矿压。《煤矿安全规程》要求孤岛工作面按冲击矿压危险工作面来管理。孤岛工作面冲击矿压危险检测预报及控制的技术是先分析冲击危险程度,确定冲击危险指数,提出早期预报;采用电磁辐射和钻屑法进行及时预报;采用卸压爆破进行处理,并采用电磁辐射和钻屑法检验防治措施的效果。实践证明,这套技术安全、可靠、有效,能够保证工作面的安全高效生产。更多还原

【Abstract】 For the island coal face and its surrounding roadways, the stress concentration is at a very high lever. And the movement of the roof is also drastic. The influence of the geological tectonics is significant. Because of the above facts, the more the mining depth is, the more the hazard degree of rock burst is. So the rock burst can be rendered easily. For island coal face, the hazard抯 monitoring, forecasting and controlling is feasible. 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, the effect of forecasting and controlling measures can be proved with electromagnetic emission (EME) and drillings. The practices prove that the technology which can assure the safety and high effective product of the coal face is safe, secure and effective.更多还原