紫坪铺隧道小净距段爆破振动现场测试及分析  

Testing and analysis on blasting vibration of small spacing zone in Zhipingpu tunnel

作　　者：姚勇[1,2] 何川[1] 田志宇[3] 

机构地区：[1]西南交通大学地下工程系,四川成都631001 [2]西南科技大学土木工程与建筑学院,四川绵阳621010 [3]四川省交通厅公路规划勘察设计研究院,四川成都610041

出　　处：《四川建筑科学研究》2009年第2期262-265,共4页Sichuan Building Science

基　　金：西部交通建设科技项目(2003-318-780-12)

摘　　要：结合都(江堰)至汶(川)高速公路路段紫坪铺隧道小净距段,当后行隧道爆破开挖时,在先行隧道洞壁安设测试元件,进行了爆破振动速度测试,研究了后行隧道爆破开挖对先行隧道的影响,得出了影响较大的部位为先行隧道迎爆侧以及开挖掌子面前后1B范围等重要结论,为小净距隧道的爆破开挖设计、施工和监控量测提供指导。Combining with the small spacing of Zhipingpu tunnel in the superhighway from Dujiangyan to Wenchuan,as the latter tunnel was excavatied by blasting, the testing element was installed in the antecedence tunnel, tested the speed of blasting vibration and studied the impact of antecedence tunnel by the latter tunnel blasting excavatied. Drawing some important conclutions that the positions of the greatest impact are towards burglary side and in the front and back part of excavatied tunnel face about 1 B and so on. This conclutions can provide some references to the design, construction and monitoring measure for blasting vibration of small spacing tunnel.

关 键 词：隧道工程 小净距 爆破振动 监控量测 

分 类 号：TU44[建筑科学—岩土工程]