既有引水洞上方新建高速公路隧道施工爆破振速研究

摘要

This paper takes certain new expressway tunnel above existing diversion tunnel project as example,pays real-time monitoring to blasting vibration velocity of the new tunnel.Based on the actual charge,geological conditions and construction methods,the finite element software ANSYS LS-DYNA was used to establish the model,and the vibration velocity of the diversion tunnel during tunnel blasting was analyzed.The results show that the impact of the new tunnel blasting on the diversion tunnel is within the safe range.%结合既有引水洞上方某新建高速公路隧道工程实例,实时监测新建隧道爆破振动速度,并依据爆破实际装药量、地质条件、施工方法,利用有限元软件ANSYS LS-DYNA建立模型,分析隧道爆破施工过程中引水洞的振动速度.分析结果显示新建隧道爆破施工对引水洞的影响在安全范围内.