防灾减灾工程学报2016，Vol.36Issue(4)：646-651,6.DOI:10.13409/j.cnki.jdpme.2016.04.020
浅埋小净距隧道掘进爆破引起的地表振动特性模拟分析
Ground Vibration Analysis of Shallow-buried and Small-interval Tunnel Resulting from Blasting by Numerical Simulation
摘要
Abstract
Based on the rock destruction process and the characteristic of stress wave,propagation,an equivalent approach used to acting blasting load was proposed,which could calculate and get the blasting vibration quickly as drill and blast method was used in tunnel excavation.Combined with the excavation of Shuangbei tunnel,the equivalent approach was taken to simulate the ground vibration induced by tunneling blast.The equivalent load acting approach is proven to be an efficient way to calculate the ground blast vibration of shallow-buried tunnel,through comparative analysis of the numerical calculation results and the measured results of the PPVs at surface mass points.Finally,We calculated the ground vibration intensity when the location relationship of the two tunnel's working face are different and obtained that there is amplification effects of the ground vibration on the un-blasting tunnel and the amplification factor of the ground vibration intensity is determined by the two tunnels working faces.关键词
浅埋小净距隧道/钻爆施工/数值模拟/地表振动Key words
shallow-buried and small interval tunnel/drill and blast method/numerical simulate/ground vibration分类
建筑与水利引用本文复制引用
邹新宽,张继春,潘强,石洪超..浅埋小净距隧道掘进爆破引起的地表振动特性模拟分析[J].防灾减灾工程学报,2016,36(4):646-651,6.基金项目
国家自然科学基金项目(41272321)资助 （41272321）
