立井井筒基岩段深孔爆破振动测试与分析

为了降低爆破施工对井筒围岩的振动作用,根据井筒断面、岩石性质以及钻爆器材等因素,对爆破参数进行了优化设计。基于地震波传播特征和爆破振动测试原理,提出了立井井筒深孔爆破振动现场监测方法,研究基岩段爆破地震波传播规律。通过对爆破振动信号的回归分析,得出了适用于该工程的爆破振动衰减规律的经验公式,可为预测掘进爆破地震强度和采取减振措施提供了依据。

Measurement and Analysis on Deep Borehole Blasting Vibration in Base Rock Section of Mine Shaft

Inorder to reduce the vibration function of the blasting construction to the surrounding rock of the mine shaft,according to the mine shaft cross section,rock property,drilling and blasting equipment and material and other factors,an optimization design was conducted on the blasting parameters.Based on the seismic transmission features and the blasting vibration measuring principle,a site monitoring and measuring method of the deep borehole blasting vibration in the mine shaft was provided and the seismic transmission law of the blasting in the base rock was studied.With the regression analysis on the blasting vibration signals,an experiences formula suitable to the blasting vibration attenuation law of the project was obtained and could provide the basis to predict the blasting seismic strength and to conduct the vibration control measures.