隧道拓宽暗洞开挖支护施工关键技术研究  

Research on Key Technology of Tunnel Widening,Excavation and Support Construction

作　　者：魏鑫 

机构地区：[1]福州市建设工程质量监督站,福建福州350026

出　　处：《福建建设科技》2024年第5期92-94,108,共4页Fujian Construction Science & Technology

摘　　要：随着经济的快速发展,“老”“旧”隧道越来越难以满足现代交通运输的要求,隧道的拓宽改造迫在眉睫。以福州市象山隧道为例,结合隧道地质及周边环境情况,提出四连拱隧道拓宽新建成双洞双层隧道的拓宽改造方案,研究分析该隧道拓宽方案实施的重难点工作,并进行隧道拓宽关键施工技术研究。为“老”“旧”隧道拓宽改造更新工程提供经验与指导。With the rapid development of the economy,“old”tunnels are increasingly unable to meet the requirements of modern transportation,and the widening and reconstruction of tunnels is becoming urgent.Taking the Xiangshan Tunnel in Fuzhou as an example,combined with the tunnel geology and surrounding environment,the tunnel widening and reconstruction scheme of four-arch tunnel widening by newly built double-hole and double-layer tunnel is proposed.The key and difficult work of the tunnel widening scheme is studied and analyzed,and the key construction technology of tunnel widening is studied.It provides experience and guidance for the updating of“old”tunnel widening and reconstruction projects.

关 键 词：“老”“旧”隧道 双洞双层隧道 拓宽改造 施工技术 

分 类 号：U455.7[建筑科学—桥梁与隧道工程]