工程爆破

2002, (03) 1-4

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质点峰值振动速度衰减公式的改进
AN IMPROVEMENT TO THE EQUATION FOR THE ATTENUATION OF THE PEAK PARTICLE VELOCITY

卢文波,Hustrulid W
LU Wen bo 1,Hustrulid W 2 (1 Wuhan University,Wuhan 430072,China; 2 University of Utah,UT84112,U S A.)

摘要(Abstract):

基于柱面波理论、长柱状装药中的子波理论以及短柱状药包激发的应力波场Heelan解的分析 ,推导了岩石爆破中质点峰值振动速度衰减公式 ,并用室内外试验资料和数值模拟结果初步验证了该公式的有效性。与传统的质点峰值振动速度衰减公式相比 ,本文推导的公式更具理论基础 ,并可反映诸如炸药种类、炸药特性、钻孔孔径、装药结构及岩性参数等因素对质点峰值振动速度的综合影响
On the basis of the analysis of the theory of the cylindrically elastic wave,the theory of the seed wave induced by a long cylindrical charge and the Heelan Solution for stress wave field induced by a short cylindrical charge,a new equation for the attenuation of the Peak Particle Velocity (PPV) during rock blasting is derived The equation is verified by both experiment data and the result of simulation with FLAC Compared with the traditional equation,the proposed equation is on a more reasonably theoretical basis,and such factors as the types of the explosive used,the characteristics for explosive and rock,the diameter of blasting hole and coupling or decoupling condition of the charge,etc,could all be included in the new equation

关键词(KeyWords): 质点峰值振动速度;衰减公式;柱面波;子波;Heelan解
Peak Particle Velocity; Attenuation equation; Cylindrically elastic wave; Seed wave; Heelan Solution

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基金项目(Foundation): 留学回国人员科研启动基金 (教外司留 [2 0 0 2 ] 2 47号 ] ;; 武汉大学邵逸周先生研究基金

作者(Author): 卢文波,Hustrulid W
LU Wen bo 1,Hustrulid W 2 (1 Wuhan University,Wuhan 430072,China; 2 University of Utah,UT84112,U S A.)

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