圆形硐室岩爆的震级预测

应用损伤力学和极值点失稳理论对圆形硐室岩爆进行了解析分析,在此基础上采用地震震级与地震波释放能量的关系,对圆形硐室岩爆震级预测方法进行了探讨。圆形硐室岩爆震级与采深、圆形硐室半径及岩性等影响因素有关,随采深、圆形硐室半径、岩石抗压强度及E/λ增加而增大,与实际观测的结果基本相符。所提出的岩爆震级的预测方法可以推广应用于煤柱和采场冲击矿压最大震级的预测。

Forecast On The Magnitude Of Rock Burst In Circle Chamber

On the base of the analysis of rock burst in circle chamber by means of damage mechanics and ultimate point instability theory, the paper probes into the method of forecasting its magnitude with the help of the relation between earthquake magnitude and energy releaseThe magnitude of rock burst increases with the increasing of mining depth, radius of circle chamber, compression strength and E/λof rock, which is identical with practical observationsThis method can be used to the forecast on the maximum magnitude of rock burst in coal pillar and mining area