Abstract:In order to analyze the attenuation law of open-pit bench blasting vibration, the blasting vibration test scheme was designed according to the general situation of mine engineering and blasting parameters. The blasting vibration test was carried out on site, and the monitoring data were counted and analyzed. The results show that the fitting results of the measured data using the Sadaovsky formula show that R2 is between 0.73 and 0.85, and the dispersion degree is too large. This phenomenon reveals the trend that the vibration effect increases with the increase of elevation in the process of open-pit bench blasting. According to the fitting results, the Sadaovsky formula in line with the site is obtained, which is helpful to the actual production. Combined with LS-DYNA, an open-pit bench blasting model was established. The phenomenon of reflection and superposition occurred in the short term after explosive blasting. The stress wave propagated to the slope surface and the top of the slope, and the obvious reflection and stretching phenomenon occurred. After the formation of penetrating cracks, it continued to propagate, revealing the vertical and horizontal tangential vibration velocity propagation law at the top of the slope during explosive blasting. This paper provides a theoretical basis and practical method for deepening the understanding of the attenuation characteristics of blasting vibration and the dynamic propagation mechanism of stress wave in open pit bench blasting, and reducing the possible harm caused by blasting vibration in mining process.