Zhao Yan, Zhang Zhuang, Ge Lijie, Xu Lingling, Zhao Huadong, Yu Mingzan
Hebei University of Architecture, Hebei, 075000, China.
School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China.
Sci Rep. 2025 Jan 23;15(1):2975. doi: 10.1038/s41598-024-84032-9.
Relying on the Beijing-Zhangjiakou high-speed railway Cao Mao Shan tunnel project, blasting vibration monitoring and sound wave testing experiments were carried out. The monitoring results show that the blasting vibration velocity corresponding to the initial support satisfies the Sadowski formula. The results of the sonic test show that with the increase of blasting times, the cumulative damage increases gradually, but the blasting damage increment shows a downward trend. In addition, as the blasting distance decreases, the blasting cumulative damage effect is significant. Through data analysis and curve fitting, the cumulative damage range R and critical blasting vibration velocity PPV corresponding to blasting construction are obtained respectively. The numerical analysis results show that there is a good exponential function relationship between the cumulative damage range R and the corresponding critical blasting vibration velocity PPV. The purpose of quantitative control of blasting damage can be achieved by setting the corresponding vibration velocity threshold.
依托京张高铁草茅山隧道工程，开展了爆破振动监测与声波测试试验。监测结果表明，初期支护对应的爆破振动速度满足萨多夫斯基公式。声波测试结果表明，随着爆破次数的增加，累积损伤逐渐增大，但爆破损伤增量呈下降趋势。此外，随着爆破距离的减小，爆破累积损伤效应显著。通过数据分析和曲线拟合，分别得到了爆破施工对应的累积损伤范围R和临界爆破振动速度PPV。数值分析结果表明，累积损伤范围R与对应的临界爆破振动速度PPV之间存在良好的指数函数关系。通过设置相应的振动速度阈值，可实现爆破损伤的定量控制目的。
