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Study on Blasting Vibration Effects of Shallow Tunnel Excavation

机译：浅埋隧道挖掘爆破振动效应研究

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摘要

Based on the practice of Huolang-yu tunnel of Mixing road reconstruction, this paper studies the monitoring of ground surface vibration and the technology of controlled blasting. The results show: (1) the ground surface vibration declines from constructed position to non-excavated areas along tunnel excavation direction. (2) The vibration control of wedge cutting holes blasting is the key to reduce or eliminate shallow tunnel vibrating calamity. And the replacement of the multi-stage small wedge cutting holes to the big wedge cutting holes ameliorates blasting vibration and rock fragmentation. (3) The overall monitoring of shallow tunnel blasting vibration and the effects, and optimum of the blasting design not only reduce blasting vibration but also ensure large circulation footage.
机译：基于淮朗 - 宇隧道搅拌道路重建的实践，本文研究了地面振动的监测和控制爆破技术。结果表明：（1）地面振动从构造位置沿着隧道挖掘方向从构造位置到非挖掘区域。 （2）楔形切割孔爆破的振动控制是减少或消除浅隧道振动灾害的关键。并将多级小楔形切割孔更换为大楔形切割孔改善爆破振动和岩石碎片。 （3）浅隧道爆破振动的总体监测和爆破设计的最佳选择不仅减少爆破振动，还要确保大循环镜头。

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