基于能量的爆破地震波衰减公式

探讨了爆破地震波能量的计算方法,建立了爆破地震波能量的衰减公式,分别采用η和β表示炸药能量转换为地震波能量的百分比和传播介质的衰减系数,通过能量转换百分比的对比,能够分析各个爆源因素对地震波能量的影响。并结合工程实例进行了验证分析。结果表明:采用爆破地震波能量的衰减公式进行拟合分析的线性相关性比萨道夫斯基公式高,说明了采用爆破地震波能量的衰减公式对地震波强度进行预报是可行的;通过遵义市新浦新区洪水台场平工程北、南两区爆破地震波能量衰减公式中η值的对比分析表明总药量和炮孔数不仅对爆破后地震波的初始总能量有影响,还对地震波初始总能量的转换率有影响。

ATTENUATION FORMULA OF BLASTING SEISMIC WAVE BASED ON ENERGY THEORY

The calculation method of blasting seismic wave energy was investigated,and the attenuation formula of blasting seismic wave energy was established.The percentage of blasting seismic wave energy which was transformed from explosive energy and the attenuation coefficient of propagation medium were expressed withηandβrespectively.The influence of each blasting source on blasting seismic wave energy was analyzed by the comparison between the percentages of energy conversion.The verification and analysis were obtained from engineering examples,and the results showed that the linear correlation of fitting analysis which achieved by the attenuation formula of blasting seismic wave energy was better than the formula of Sadov's.It truned out that it was feasible to predict the intensity of earthquake wave by the attenuation formula of blasting seismic wave energy.Comparative analysis ofηbetween north and south blasting areas of Zunyi Xinpuxinqu Hongshuitai field-leveling project showed that the total charge and the amounts of blasting holes had influenced with blasting seismic wave initial total energy, and had influenced with the transformation rate of blasting seismic wave initial total energy.