开切眼附近发生冲击地压的力学机理分析

The analysis of the mechanical mechanism about rock burst near by the open- off cut

在开切眼附近,存在多种应力,比较复杂,开挖或推采时,破坏了原有的应力场平衡,形成二次应力,即又有一次应力的转移与集中,这是切眼附近发生多应力综合作用下诱发冲击地压的力学机理。通过分析这一机理,能够有效地减少冲击地压发生的概率,指导安全生产。

There is a variety of stress, which is complex near by the open - off cut. Excavation or push mining, the original stress balance was destroyed, and the secondary stress was forming. And the stress was transfer and concentration once again. This is the mechanics mechanism of＇ rock bursts near by the open -off cut, which was synthesize induced by much stress. Through analysing the mechanics mechanism, it can reduce the rock burst probability and guide safety production.