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为了研究露天矿爆破生产中地表震动的安全性问题,采用回归分析方法对相关爆破震动速度公式进行了分析。通过现场监测试验得到了露天矿爆破现场区域的地表震动速度,基于现场测试数据对各地表震动速度经验公式中的衰减系数及衰减指数进行了反演;根据临界震动速度确定了爆破时的安全距离,反演了地表质点震动速度,并对计算结果进行了误差分析。结果表明,广义公式预测的震动速度误差小于采用萨道夫斯基公式的计算误差,印度震动速度预测公式计算结果的误差最大;考虑高程影响的震动速度公式计算结果的误差小于萨道夫斯基公式计算结果的误差,且预测值大于实际测量值。基于现场测试和回归分析方法对地表震动速度公式的分析,对于露天矿生产中的爆破安全具有实际意义。
In order to study the safety of surface vibration in the blasting production of opencast mine, the formula of vibration velocity of blasting is analyzed by regression analysis method. Through the on-the-spot monitoring and test, the surface vibration velocity in the blasting site of the opencast mine was obtained. Based on the field test data, the attenuation coefficient and attenuation index in the empirical formulas of the local surface vibration velocities were inverted. The safety distance , The surface particle velocity is inverted, and the error of the calculation results is analyzed. The results show that the error of vibration velocity predicted by the generalized formula is smaller than that of the Sadowitzki formula, and the error of the Indian shock velocity prediction formula is the largest. The error of the vibration speed formula considering the elevation effect is less than that of the Sadowssky formula The results of the error, and the predicted value is greater than the actual measurement. Analysis of surface vibration velocity formula based on field test and regression analysis method has practical significance for blasting safety in opencast mine production.