Abstract A semi-analytical full-field solution for the radiation of seismic waves has been developed and applied to calculate the near-field vibration from blasting. The shape of the source function applied to the blasthole wall has been obtained from numerical modelling of detonation, with a peak value determined as the shock matching pressure of the detonation products and rock. Particle velocity and acceleration signals from four blasts have been recorded and used for the purpose of determining the quality factors (Q) of the rock mass, expressed as functions of the radial distance to the blasthole. The model consistency has been validated by verifying that the resulting peak particle velocity at the blasthole wall coincides with the particle velocity obtained from the explosive-to-rock shock matching calculation. Fracture zones are identified using a failure criterion based on principal stresses of the resulting Cauchy's stress tensor and uniaxial compressive and tensile strengths. Two variants of the industry-standard Holmberg-Persson approach have been compared with the full-field solution.

中文翻译：

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使用全场解决方案进行爆破和岩石损伤预测的近场振动

摘要 开发了地震波辐射的半解析全场解，并将其应用于计算爆破的近场振动。应用于爆破孔壁的源函数的形状是从爆震数值模拟中获得的，峰值确定为爆震产物和岩石的冲击匹配压力。来自四次爆破的粒子速度和加速度信号已被记录并用于确定岩体的质量因子 (Q)，表示为到炮眼的径向距离的函数。通过验证炮孔壁处产生的峰值粒子速度与从炸药与岩石冲击匹配计算获得的粒子速度一致，验证了模型的一致性。断裂区是使用基于产生的柯西应力张量的主应力以及单轴压缩和拉伸强度的失效准则来识别的。行业标准 Holmberg-Persson 方法的两种变体已与全场解决方案进行了比较。