双跨连拱隧道侧导洞扩挖动力分析  

Analysis of the Blasting Vibration Effect for Enlargement of Double-arch Tunnel

作　　者：王晓放[1] 李存德 宋玉香[3] 

机构地区：[1]石家庄铁道学院成人教育分院,石家庄050043 [2]辛集市市政工程公司,辛集052360 [3]石家庄铁道学院土木工程分院,石家庄050043

出　　处：《石家庄铁道学院学报》2002年第B08期5-7,共3页Journal of Shijiazhuang Railway Institute

摘　　要：博山 2号双跨连拱隧道采用三导洞钻爆法施工 ,中导洞超前 ,两侧导洞滞后 ,待中隔墙完成后进行侧导洞扩挖。为保证施工安全 ,采用有限元程序对扩挖过程进行分析 。Boshan No.2 tunnel is a double arch tunnel,it was excavated by drill and blast with three pilots,the middle pilot was first excavated,followed by the lateral pilots which would be enlarged after the middle wall had been built.In order to ensure the safety of middle wall,the blasting vibration effect are analyzed by means of FEM in this paper.

关 键 词：双跨连拱隧道 侧导洞 扩挖 动力分析 爆破震动效应 施工 中隔墙 三导洞钻爆法 

分 类 号：U451[建筑科学—桥梁与隧道工程] U455.4[交通运输工程—道路与铁道工程]