With the new index, the intension of rockburst and the position and extent of failure zone can be predicted quantitatively during rockmass excavation under high geostress.

• 该指标可更好地定量预测高地应力下地下工程开挖过程中岩爆发生的强度、破坏位置与范围，由该指标求出的围岩释放能又可作为地下工程开挖方案的优化指标。