深孔台阶爆破近区利用Anderson模型预测振动效应的修正方法研究

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (7) : 110-115.

论文

韩亮1，梁书锋1，刘殿书1，辛崇伟2

作者信息 +

Study on correction method of forecasting the effects of vibration using Anderson model in near field of deep hole bench blasting

HAN Liang1,LIANG Shufeng2,LIU Dianshu2,XIN Chongwei3

Author information +

文章历史 +

摘要

在深孔台阶爆破近区利用Anderson模型进行波形叠加过程中，为了消除群孔脉冲序列及冲激响应存在的偏差，提出了预测振动效应的修正方法。按照不同间隔时间构建多种群孔脉冲序列，与冲激响应遍历进行卷积运算后，找出与实测波形最吻合的一组作为最优置信水平下的群孔脉冲序列；同时，基于主频衰减规律，以各炮孔至测点距离与基孔距离的接近程度作为确定冲激响应的方法。将其植入Matlab编制的预测程序对某次爆破振动效应进行预测，结果表明，修正后预测波形与实测波形的相似度提升显著，振速预测偏差由83%~130%下降到0~39%，预测精度得到明显改善。

Abstract

In the process of using Anderson model to superimpose waveform in near field of deep hole bench blasting,in order to eliminate the deviation of the multi-hole pulse sequence and the impulse response,a correcting method of forecasting the effects of vibration was proposed.After constructing the multi-hole pulse sequence in accordance with different intervals,then traversing doing convolution with impulse response,the best fit of the measured waveform was found as the multi-hole pulse sequence under the optimal confidence level.Meanwhile,based on the frequency attenuation law,taking the proximity of the distance from each hole to the measure point and the base hole distance as the parameter for determining the impulse response.With the Matlab forecasting program implanted into the above methods to forecast one blasting vibration,the results show that after correction,the forecast waveform is significantly closer to the measured one and the velocity forecasting deviation drop from 83%-130% to 0%-39%,forecasting accuracy is significantly improved.

导出引用

韩亮1，梁书锋1，刘殿书1，辛崇伟2. 深孔台阶爆破近区利用Anderson模型预测振动效应的修正方法研究[J]. 振动与冲击, 2017, 36(7): 110-115

HAN Liang1,LIANG Shufeng2,LIU Dianshu2,XIN Chongwei3. Study on correction method of forecasting the effects of vibration using Anderson model in near field of deep hole bench blasting[J]. Journal of Vibration and Shock, 2017, 36(7): 110-115

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