隧道下穿村庄对地面建筑爆破震动影响的研究

STUDIES ON INFLUENCE LAW OF TUNNEL BLASTING VIBRATION ON GROUND BUILDING

以某公路隧道工程掘进开挖爆破的震动安全监测项目为依托,运用数值三维模型实体建模研究隧道下穿村庄时当地民用建筑基础、圈梁、楼板、柱等不同的速度响应时程,分析得出响应规律。在施工现场运用该速度峰值震动数据,优化了爆破起爆药量,使爆破震动控制在设防标准范围内。

In this paper, based on a safety monitoring project of highway tunnels in Qingdao, three-dimensional modeling was used to study the response laws of different building blocks to blasting vibration, so that providing with base data to solve the harm vibration problem. Good effects is achieved in site for getting optimal maximal blasting explosive charge based on the peak vibration velocity of the modeling, so that the blasting vibration is controlled with in the fortification standards.