Comparative study on blasting simulation vibration reduction and field vibration reduction experiment of adjacent oil pipeline

Introduction Yongxing Tunnel No.1’s complex geology near a buried oil pipeline on the Guizhou-Nanning high-speed route poses blasting risks. Prioritizing pipeline safety, efforts focus on minimizing vibration impacts. Methods Research uses numerical simulations and field tests to analyze three delay times and three spacing charge materials for vibration reduction. Results Optimal delay is 30 ms, yielding a 0.52 cm/s vibration velocity, 20%-29% lower than 28 ms and 32 ms. Soil is the most effective spacer, achieving 0.46 cm/s, 30.30%-22.03% lower than water and air. Field tests align with simulations. Discussion Findings provide a reference for optimal vibration reduction and safe construction under similar conditions.