济二矿首例孤岛综放面冲击矿压监测治理

孤岛综放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，很容易引发冲击矿压．孤岛工作面冲击矿压危险检测预报及控制的技术可事先分析冲击危险程度，并提出早期预报．本采用电磁辐射和钻屑法进行及时预报；应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．

Monitoring and Control of Rock Burst in Island Coving Coal Face

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 factors, the more the mining depth is, the more the hazard degree of rock burst is. Therefore, the rock burst can be rendered easily. For island coal face, the monitoring, forecasting and controlling technology for hazard is feasible. In this paper, the hazard extent of rock burst is analyzed to determine the index of the hazard of rock burst, and to present the incipient forecast. Then, the rock burst is 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 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.