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结合某隧道爆破震动的大量监测,分析了爆破震动高程放大系数K′与爆心距R和爆心距的水平投影S之比值(R/S)的相关性,现场的监测结果表明爆破震动放大效应系数K′与R/S成正相关,当R/S变化范围在1～5时,K′值增长较快;当R/S大于5时,K′值增长渐缓,最后趋于水平;爆破震动放大效应系数K′并不会随R/S值增大而无限制的增大,同时通过现场的实测对其进行了检验,研究结果对于城市复杂环境下爆破震动效应的预测以及爆破震动放大效应的理论研究有一定的现实意义。
Combined with a large amount of monitoring of blasting vibration in a tunnel, the correlation between the blasting vibration amplification factor K 'and the ratio (R / S) of the horizontal projection S between the burst center distance R and the burst center distance was analyzed. The field monitoring results show that the blasting vibration amplification effect coefficient K 'is positively correlated with R / S. When R / S varies from 1 to 5, K' value increases rapidly; when R / S is greater than 5, K 'value increases gradually and finally tends to the level; The amplification effect coefficient K 'does not increase with the increase of R / S but increases unrestrictedly. At the same time, it is verified by field measurements. The results of the study predict the blasting vibration effect in urban complex environment and the amplification effect of blasting vibration The theoretical research has some practical significance.