隧道近距下穿老旧建筑物爆破振动监测及减振技术研究

发布时间：2018-04-30 07:21

  本文选题：隧道工程 + 爆破　； 参考：《施工技术》2017年11期

【摘要】：以成渝客运专线新红岩隧道为工程背景,对隧道近距离下穿老旧建筑物的爆破振动监测方法及减振技术进行了研究。通过对老旧建筑物的爆破振速进行实时监测和数据回归分析,拟合出萨道夫斯基公式中的K,α值,优化后续隧道爆破施工。相对于非电雷管,在装药量不变的情况下,采用电子雷管掏槽,振速降低50%以上,在振速、爆心距、单段药量相同的情况下,采用电子雷管掏槽,施工进尺增大70%。从布置减振孔、装药结构、微差延迟爆破3个方面提出了爆破振动控制技术,实现控制爆破振动速度在老旧建筑物的安全振速范围以内,确保了老旧建筑物的安全。
[Abstract]:Taking the new Hongyan tunnel of the Chengdu Chongqing passenger dedicated line as the engineering background, the blasting vibration monitoring method and vibration damping technology of the old buildings near the tunnel are studied. Through the real-time monitoring and data regression analysis of the blasting vibration speed of the old buildings, the K, the alpha value of the sardowski formula is fitted out, and the follow-up tunnel blasting is optimized. Compared with the non electric detonator, the electronic detonator is used to cut the slotting with an electronic detonator to reduce the vibration speed by more than 50%. Under the condition of the speed of vibration, the detonating distance and the single dose, the electronic detonator is used to cut the slot, and the construction footage increases 70%. from the 3 aspects of the arrangement of the damping hole, the structure of the charge and the delay delay blasting, and the blasting vibration control technology is put forward. The blasting vibration speed is controlled within the safe vibration range of the old buildings to ensure the safety of the old buildings.

【作者单位】： 青岛理工大学土木工程学院;青建集团股份公司;
【分类号】：U455.6
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本文编号：1823618