延安路站侧穿危楼的微振动爆破控制优化

Optimization of Micro-vibration Blasting Control for Yanan Road Station Side-crossing Dangerous Building

钻爆法施工是当前乃至将来一定时期内隧道掘进的主要手段。为降低爆破振动对危楼的影响,以青岛地铁延安路站1号风道侧穿危楼为工程背景,试验并分析了复式楔形掏槽降振失败的原因。通过采用大直径中空孔掏槽方式和逐孔起爆网路,将爆破振动有害效应有效降低约50%,保证了隧道顺利侧穿危楼。为同类工程提供了宝贵经验,对其他类似工程有借鉴意义。

In order to reduce the influence of blasting vibration on dangerous building, taking the No.1 air duct of Yanan Road Station in the metro of Tingdao side-crossing the dangerous building as the engineering background, the article analyzes the cause of vibration reduction failure of compound-term wedge cutting.The use of large-diameter empty hole cutting and the hole-by-hole initiation network approach will effectively reduce the harmful effect of blasting vibration by about 50% and guarantee the tunnel smoothly side-crossing the dangerous buildings.