【摘要】 全面总结、分析了岩石爆破过程S波的产生机制,表明短柱状药包、炮孔周围岩体的开裂与破碎以及装药偏离球形或柱形空腔中心,均可诱发S波,并且诱发S波的幅值可超过P波;P波传播过程与岩体界面的相互作用,可产生次生的S波(透、反射SV波)。在此基础上,就爆破振动场模拟方法与计算模型选择中如何体现S波的产生机制方面提出了建议。更多还原

【Abstract】 Mechanisms of S wave induced during rock fragmentation by blasting are concluded and analyzed as follows.The short column charge,cracking and breakage of rock mass around blast hole and deviation of charge away from the centre of spherical or cylindrical cavities can induce S wave.The interaction of P wave with rock interfaces during propagation can produce secondary S waves(transmitted and reflected S waves).On the basis of this,some proposals on how to choose the numerical method and calculation model during blasting vibration simulation are put forward so as to reflect the mechanisms of induced S waves.更多还原