隧道爆破综合控制技术在邻近既有线条件下的创新应用  

Innovative Application of Tunnel Blasting Comprehensive Control Technology in Adjacent Existing Tunnel Lines

作　　者：邓超[1] DENG Chao(The Fourth Engineering Co.,Ltd.of China Railway 18th Bureau Group,Tianjin 300350,China)

机构地区：[1]中铁十八局集团第四工程有限公司,天津300350

出　　处：《建筑施工》2021年第9期1872-1874,1881,共4页Building Construction

摘　　要：以国道209线武川至呼和浩特段公路大青山Ⅰ号隧道项目为研究对象,对邻近既有线条件下的隧道爆破综合控制技术进行了创新。通过采取微振控制爆破技术以及针对不同围岩条件下的掘进工艺流程,最终在未加固既有隧道的情况下实现了安全掘进,有效地保证了工期进度,为对工程进度有要求的新建隧道建设项目提供了一种新的开挖思路。Taking the Daqingshan I tunnel project of Wuchuan Hohhot section of national highway 209 as the research object,the comprehensive control technology of tunnel blasting adjacent to the existing tunnel line is innovated.By adopting the micro vibration blasting technology and the excavation process under different surrounding rock conditions,the safe excavation is finally realized without strengthening the existing tunnel,which effectively ensures the construction schedule,and provides a new excavation idea for the new tunnel construction project with requirements for the project schedule.

关 键 词：新建隧道 既有隧道不加固 微振爆破 掘进施工 

分 类 号：TU99[建筑科学—市政工程]