摘要
为保证既有隧道的安全运营,开展了新建隧道上跨既有隧道爆破振动的影响分析研究。在距离掌子面100m处的交叉段区域内对新建隧道进行爆破振动监测。根据实测数据,运用萨道夫斯基公式回归分析新鼓山隧道质点峰值振动速度,并根据公式推算出单段最大药量。通过数值模拟软件ANSYS/LYS-DYNA分析爆破振动对既有隧道产生的影响,并且对既有隧道进行振动监测,将模拟结果与实测结果进行比较。结果表明,模拟结果接近实测结果,可为类似工程提供参考。
In order to ensure the safe operation of existing tunnel,the influence analysis of a new tunnel blasting vibration on the existing tunnel was carried out.It＇s in the cross section area at 100 mfrom the tunnel face.Based on the measured data,the Sadov＇s formula was used to analyze the peak vibration velocity of the New Gushan Tunnel.According to the formula,maximum charge quantity in one delay time was calculated.The influence of blasting vibration on existing tunnels was also analyzed by numerical simulation software ANSYS/LYS-DYNA.Vibration monitoring of the existing tunnels was carried out and the simulation results and the measured results were compared.The results showed that the simulation results were close to the measured one.It could provide a reference for similar projects.
出处
《工程爆破》
2017年第3期52-55,59,共5页
Engineering Blasting
关键词
隧道
爆破振动
萨道夫斯基公式
回归分析
振动速度
数值模拟
振动监测
tunnel
blasting vibration
Sadov＇s formula
regression analysis
vibration velocity
numerical simulation
vibration monitoring
