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THE DYNAMIC DISTURBANCE AS A MECHANISM TO TRIGGER THE ROCKBURST AROUND THE UNDERGROUND OPENING

机译:动态扰动是触发地下洞室岩爆的一种机制

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Rock bursts occur when a highly stressed rock mass at depth is triggered by a dynamic disturbance. The Realistic Failure Process Analysis (RFPA) numerically simulates the occurrence of rock bursts around the deep rock tunnel, which arc triggered by a dynamic disturbance. The effects of waveforms from dynamic disturbances and tunnel depth on the occurrence of rock bursts are studied. The numerical results indicate that dynamic disturbances are one of the most important mechanisms that govern the stability of underground openings. When tensile stress induced by static in-situ stress caused by dynamic disturbance arc superposed at a location to enhance the total tensile stress, the contribution of dynamic disturbance to trigger rock bursts becomes greater with the increase of tunnel depth.
机译:当动态扰动触发深处的高应力岩体时,就会发生岩爆。现实破坏过程分析(RFPA)数值模拟了深部岩石隧道周围岩石破裂的发生,该破裂是由动态扰动触发的。研究了动态扰动和隧道深度引起的波形对岩爆发生的影响。数值结果表明,动态扰动是控制地下洞室稳定性的最重要机制之一。当由动态扰动引起的静态原地应力引起的拉应力叠加在一个位置上以增强总拉应力时,随着隧道深度的增加,动态扰动对触发岩爆的贡献就变得更大。

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