城市浅埋隧道开挖减震控制爆破技术

摘要

Only by adopting vibration-reducing controlled blasting technology,can the buildings with poor vibration-resistance in busy urban area avoid to be damaged by blasting vibration from excavation of shallow tunnels underground.In the light of an engineering example,some key technologies such as mini-bench constructing method,vibration-reducing cutting and linear blast-hole layout were expounded in this paper.%在建筑物密集且部分建筑物抗震性能差的城市繁华地带的地下，进行 浅埋隧道爆破开挖施工，只有采用减震控制爆破技术才能使地表建筑物免受爆 破震动的危害。笔者结合工程实例对城市浅埋隧道减震控制爆破的技术要点，如微台阶施工法、减震掏槽形式、炮孔线形布置等进行了阐述。