地铁隧道掘进下穿BRT车站爆破振动效应研究  

Study on Blasting Vibration Effect in Subway Tunnel Tunneling with Down-traversing BRT Station

作　　者：张发财 王林台[2] 刘春旭 高文学[2] 赵浩[2] 

机构地区：[1]北京市政路桥股份有限公司,北京100068 [2]北京工业大学建筑工程学院,北京100124

出　　处：《施工技术》2017年第17期110-113,135,共5页Construction Technology

基　　金：北京市政路桥股份有限公司科技开发项目;国家自然科学基金重点项目(12004014201501)

摘　　要：以乌鲁木齐地铁1号线中营工—铁路局区间隧道施工为背景,研究了隧道爆破开挖对其上方BRT车站的振动影响。基于现场监测,分析了爆破振动对爆源上方的影响范围,比较分析了CRD法施工时各部分爆破开挖对车站基础振动峰值大小和频谱特征,基于监测结果优化了爆破施工方案。通过以上研究,得出如下结论:爆破振动对爆源上方地表前后10m范围影响最为显著;CRD法施工时,第1步工序开挖爆破振动影响显著;隧道掘进,掏槽爆破引起的振动显著增强,选择合理的掏槽结构形式、爆破参数等,是浅埋隧道开挖中控制爆破振动的关键。Taking Urumqi Subway line 1, tunnel construction as the background, the authors study the tunnel blasting vibration effect on the top of the BRT station. Based on the on-site monitoring and analysis of blasting vibration impact on the explosion source above, the peak value and frequency spectrum of blasting vibration of each part of the building under the CRD method are analyzed and compared. Based on the monitoring results, the blasting construction scheme is optimized. Through the above research, this paper draws the following conclusion： Blasting vibration in blasting source before and after the surface above the 10m range has the most significant impact. In CRD construction method, the first step excavation blasting vibration has significant influence. In tunnel excavation blasting, the vibration caused by cutting blasting is the most remarkable, reasonable cut structure form and blasting parameter is the key to control blasting vibration in shallow tunnel excavation.

关 键 词：地铁车站 隧道工程 爆破 开挖 振动监测 减振 

分 类 号：U455.4[建筑科学—桥梁与隧道工程] U215.3[交通运输工程—道路与铁道工程]