考虑衬砌背后空洞的隧道振速公式优化研究

Optimization of Tunnel Vibration Velocity Formula Considering Cavities Behind Lining

隧道空洞是工程建设常见病害,为保证已有隧道在爆破作用下的结构安全稳定性,对衬砌背后存在空洞的隧道进行研究,将隧道爆破振速监控数据与知识理论相结合,将存在背后空洞的已有隧道在爆破作用下地震波传播与哀减规律公式进行调整优化,利用最小二乘法优化得出的衰减指数α、K值,其对今后的工程建设爆破施工有着一定指导作用。

Cavity is a common disease in engineering.For ensure the structural safety and stability of existing tunnels under the action of blasting,the tunnels with cavities behind the lining are studied.The monitoring data of tunnel blasting vibration speed and theory will be combined.The empirical formula of the law of seismic wave propagation and reduction under the existing tunnel under blasting is adjusted and optimized,the attenuation indexαand K values obtained by the least square method are optimized,which has a certain guiding role for future engineering construction blasting construction.