Analysis of blasting vibration wave propagation based on finite element numerical calculation and experimental investigations

• Main Authors: Tung-Cheng Wang, Chin-Yu Lee, Iau-Teh Wang
• Format: Article
• Language: English
• Published: JVE International 2017-06-01
• Series: Journal of Vibroengineering
• Subjects: explosion; dynamic pressure; vibration; peak ground acceleration
• Online Access: https://www.jvejournals.com/article/17404

Seismic waves created during explosions are transmitted in an outward direction via the surrounding medium, creating a seismic effect that compromises the security of facilities. The energy released during explosions forms dynamic pressure, which creates gas pressure-induced blast waves that cause the ground to vibrate. The damage extent and influence of a blast are dependent on the energy released by the blast shock waves. Blast waves influence the stability of materials. Therefore, controlling vibration hazards is imperative in ensuring material security. This study investigated the effect of explosion-induced vibrations on the surface of a leveled landform. Changes in dynamic load over time were analyzed by conducting numerical simulations and actual onsite experiments. The Multi-Material Arbitrary Lagrangian-Eulerian algorithm were employed to develop a structural model for coupling fluid with solid grids, which was used to analyze the ground acceleration induced by the blasting effect. The results were used to determine the appropriate distance from which vibration reduction, disaster prevention, and safety protection can be achieved.