Yang Zhaowei, Hu Yingguo, Liu Meishan, Li Peng, Yao Erlei, Ma Chenyang
Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Changjiang River Scientific Research Institute, Wuhan 430010, China.
Sensors (Basel). 2024 Feb 20;24(5):1355. doi: 10.3390/s24051355.
The research on the attenuation law of blasting vibration has become the foundation and precondition of the effective control of blasting vibration damage. Aiming at the characteristics of low frequency, low velocity, and strong amplitude of the R wave, an improved wave component separation method based on R wave suppression is proposed. Combined with the measured vibration signals of a field test, the attenuation parameters of different types of waves in the propagation process of blasting seismic waves are studied. The analysis results show that, in the process of blasting seismic wave propagation, the attenuation parameters of different types of waves are significantly different. With an increase in propagation distance, the proportion of the different types of waves will also change. The study of attenuation law with only coupled particle peak vibration velocity often showed high discreteness. The fitting correlation coefficient and prediction accuracy of peak vibration velocity without distinguishing wave modes are lower than those induced by the P wave or R wave alone, which should be attributed to the conversion of dominant wave modes in blasting vibration at different distances.
爆破振动衰减规律的研究已成为有效控制爆破振动危害的基础和前提。针对瑞利波低频、低速、强振幅的特点，提出了一种基于瑞利波抑制的改进波分量分离方法。结合现场试验实测振动信号，研究了爆破地震波传播过程中不同类型波的衰减参数。分析结果表明，在爆破地震波传播过程中，不同类型波的衰减参数差异显著。随着传播距离的增加，不同类型波的比例也会发生变化。仅用耦合质点峰值振动速度研究衰减规律时，离散性往往较高。不区分波型的峰值振动速度拟合相关系数和预测精度低于单独的P波或瑞利波，这应归因于不同距离处爆破振动中主导波型的转换。
