基于环境振动标准的爆破振动安全性研究

基于《城市区域环境振动标准》(GB 10070—88)和《城市区域环境振动测量方法》(GB 10071—88),进行了露天深孔爆破工程振动测试。通过对测试数据的处理与分析,计算了振动加速度振级,探讨了露天深孔台阶爆破引起的环境振动特性及传播规律。结果表明:在段药量相同时,随着测点与爆心距离的增加,加速度振级将逐渐降低;对于同一测点,随着段药量的增加,加速度振级将逐渐增大;高频振动分量的振级衰减较快,低频振动分量的振级衰减较慢。

STUDY ON THE SAFETY OF BLASTING VIBRATION BASED ON THE ENVIRONMENTAL VIBRATION STANDARD

Based on the Standard of Environmental Vibration in Urban Areas(GB 10070 — 88) and Measurement of Environmental Vibration of Urban Area(GB 10071 — 88),the vibration tests in the openpit deep-hole bench blasting projects were carried out.The performance and the propagation law of vibration caused by deep-hole bench blasting in open pit were investigated through the processing and analysis of data measured and the calculation of vibration level of vibration acceleration.The results showed that:in the same dosage,the vibration level of acceleration would reduce gradually as the distance from the monitoring points to the explosion center increased;for the same monitoring point,the vibration level would increase gradually with the increase of dosage;and the vibration level of high frequency vibration attenuated faster than the vibration level of low frequency vibration.