Prediction of Vibration Waveform and Division of Influenced Partitions under the Action of Blasting

Abstract

Abstract To study the impact of cutting blasting on the surface of the tunnel, a vibration waveform prediction function was constructed, and a method of dividing the affected area based on the vibration waveform theory was proposed. Based on the equivalent spherical charge theory, it is possible to establish a connection between the fitting coefficient and the engineering parameters in the equivalent source intensity function. Furthermore, a blasting vibration waveform function suitable for practical engineering can be constructed. Secondly, the reliability of the method introduced in this paper is verified based on the blasting vibration data monitored on site. Finally, the impact areas of blasting vibration are divided based on the peak particle velocity and vibration displacement as standards. The research results show that the vibration waveform prediction system introduced can better restore the vibration waveform corresponding to cutting blasting. In addition, the zoning method introduced in this article can reasonably divide the scope of the affected area. Moreover, the calculation process is simple and practicable. It has certain reference significance for similar blasting project.