高边坡爆破振动监测及其传播规律研究

Monitoring of blasting vibration in high rocky slope and researching on its law of propagation

为了分析、预测及控制某高边坡爆破振动对周边建筑的影响,采用爆破振动测试仪对爆破荷载下建筑物的质点峰值振动速度进行监测。对比了通过线性及非线性回归方法所求解出的高边坡爆破振动速度预测模型,根据监测数据,得出了该高边坡爆破振动的传播规律。研究结果表明:采用传统的爆破振动预测模型的精度较低,考虑高程差的预测模型精度较高;采用非线性回归得到的预测模型能较好地反应该段高边坡爆破振动的传播规律;采用逐孔起爆技术具有较好的降振效果。

In order to analyze,predict and control the influence of blasting vibration on the surrounding buildings of a high rocky slope,we used a blasting vibration tester to monitor the peak particle vibration velocity of surrounding buildings under the blasting load.We compared the prediction model of high rocky slope's blasting vibration velocity obtained by using linear and nonlinear regression methods.On the basis of the monitoring data,the propagation law of blasting vibration of the high slope is obtained.The results show that the accuracy of the traditional blasting vibration prediction model is low,but the prediction model's accuracy considering elevation difference is higher than before.The prediction model obtained by nonlinear regression can better reflect the propagation law of blasting vibration of the high slope.