基于能量原理的岩爆机理及应力状态分析

Discussion on mechanism of rockburst and stress state based on energy principles

讨论了岩石破坏与能量耗散、能量释放的内在联系.基于能量原理,指出了岩爆发生的机制与特点,证明岩爆是发生在储存有高弹性应变能的硬脆性岩体中的地质灾害.结合圆形洞室围岩应力分布,分析了发生岩爆的地下洞室围岩的应力状态及相应的灾变位置.

The intrinsic relations between energy dissipation, energy release and failure of rock are discussed. Based on energy principles, the mechanism and characteristic of rockburst are pointed out; and it is proved that the rockburst is a geological disaster which happens in hard brittle rock mass accumulating lots of energy. The stress state and failure location of rockburst in surrounding rock of underground excavation is analyzed by integrating with surrounding rock stress distribution of circular shape tunnel.